Low Cost, High Speed, Rail-to-Rail, Output Op Amps ADA4851-1/ADA4851-2/ADA4851-4 FEATURES PIN CONFIGURATIONS VOUT 1 ADA4851-1 6 +VS -VS 2 5 POWER DOWN +IN 3 4 -IN 05143-001 Qualified for automotive applications High speed 130 MHz, -3 dB bandwidth 375 V/s slew rate 55 ns settling time to 0.1% Excellent video specifications 0.1 dB flatness: 11 MHz Differential gain: 0.08% Differential phase: 0.09 Fully specified at +3 V, +5 V, and 5 V supplies Rail-to-rail output Output swings to within 60 mV of either rail Low voltage offset: 0.6 mV Wide supply range: 2.7 V to 12 V Low power: 2.5 mA per amplifier Power-down mode Available in space-saving packages 6-lead SOT-23, 8-lead MSOP, and 14-lead TSSOP TOP VIEW (Not to Scale) Figure 1. ADA4851-1, 6-Lead SOT-23 (RJ-6) ADA4851-2 8 +VS -IN1 2 7 OUT +IN1 3 6 -IN2 -VS 4 5 +IN2 05143-058 OUT1 1 TOP VIEW (Not to Scale) VOUT 1 1 14 VOUT 4 -IN 1 2 13 -IN 4 +IN 1 12 +IN 4 3 APPLICATIONS Automotive infotainment systems Automotive driver assistance systems Consumer video Professional video Video switchers Active filters Clock buffers ADA4851-4 TOP VIEW (Not to Scale) 11 -VS +IN 2 5 10 +IN 3 -IN 2 6 9 -IN 3 VOUT 2 7 8 VOUT 3 +VS 4 05143-054 Figure 2. ADA4851-2, 8-Lead MSOP (RM-8) Figure 3. ADA4851-4, 14-Lead TSSOP (RU-14) GENERAL DESCRIPTION With their combination of low price, excellent differential gain (0.08%), differential phase (0.09), and 0.1 dB flatness out to 11 MHz, these amplifiers are ideal for consumer video applications. The ADA4851-1W, ADA4851-2W, and ADA4851-4W are automotive grade versions, qualified for automotive applications. 4 G = +1 VS = 5V RL = 1k CL = 5pF 3 2 1 0 -1 -2 -3 -4 -5 -6 1 10 100 FREQUENCY (MHz) 1k 05143-004 The ADA4851 family is designed to operate at supply voltages as low as +3 V and up to 5 V. These parts provide true singlesupply capability, allowing input signals to extend 200 mV below the negative rail and to within 2.2 V of the positive rail. On the output, the amplifiers can swing within 60 mV of either supply rail. See the Automotive Products section for more details. The ADA4851 family is designed to work over the extended temperature range (-40C to +125C). CLOSED-LOOP GAIN (dB) The ADA4851-1 (single), ADA4851-2 (dual), and ADA4851-4 (quad) are low cost, high speed, voltage feedback rail-to-rail output op amps. Despite their low price, these parts provide excellent overall performance and versatility. The 130 MHz, -3 dB bandwidth and high slew rate make these amplifiers well suited for many general-purpose, high speed applications. Figure 4. Small-Signal Frequency Response Rev. J Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 (c)2004-2010 Analog Devices, Inc. All rights reserved. ADA4851-1/ADA4851-2/ADA4851-4 TABLE OF CONTENTS Features .............................................................................................. 1 ESD Caution................................................................................ 10 Applications ....................................................................................... 1 Typical Performance Characteristics ........................................... 11 Pin Configurations ........................................................................... 1 Circuit Description......................................................................... 17 General Description ......................................................................... 1 Headroom Considerations ........................................................ 17 Revision History ............................................................................... 2 Overload Behavior and Recovery ............................................ 18 Specifications..................................................................................... 4 Single-Supply Video Amplifier ................................................. 19 Specifications with +3 V Supply ................................................. 4 Video Reconstruction Filter ...................................................... 19 Specifications with +5 V Supply ................................................. 6 Outline Dimensions ....................................................................... 20 Specifications with 5 V Supply ................................................. 8 Ordering Guide .......................................................................... 21 Absolute Maximum Ratings.......................................................... 10 Automotive Products ................................................................. 21 Thermal Resistance .................................................................... 10 REVISION HISTORY 10/10--Rev. I to Rev. J Added Output Characteristics, Linear Output Current Parameter, Table 2............................................................................. 7 Added Output Characteristics, Linear Output Current Parameter, Table 3............................................................................. 9 5/10--Rev. H to Rev. I Changes to Power-Down Bias Current Parameter, Table 1 ........ 3 Moved Automotive Products Section .......................................... 20 4/10--Rev. G. to Rev. H Added Automotive Product Information ................... Throughout Changes to Table 1 Through Table 3 .............................................. 3 Updated Outline Dimensions ....................................................... 19 Changes to Ordering Guide .......................................................... 20 9/09--Rev. F. to Rev. G Moved Automotive Products Section .......................................... 18 Updated Outline Dimensions ....................................................... 19 5/09--Rev. E. to Rev. F Changes to Features, Applications, and General Description Sections .............................................................................................. 1 Changes to Table 1 ............................................................................ 3 Changes to Table 2 ............................................................................ 5 Changes to Table 3 ............................................................................ 7 Changes to Figure 27 and Figure 28 ............................................. 13 Changes to Figure 47, Added Automotive Products Section ... 18 Updated Outline Dimensions ....................................................... 19 Changes to Ordering Guide .......................................................... 20 8/07--Rev. D to Rev. E Changes to Applications ...................................................................1 Changes to Common-Mode Rejection Ratio, Conditions...........5 Changes to Headroom Considerations Section ......................... 13 4/06--Rev. C to Rev. D Added Video Reconstruction Filter Section ............................... 15 5/05--Rev. B to Rev. C Changes to General Description .....................................................1 Changes to Input Section .............................................................. 14 4/05--Rev. A to Rev. B Added ADA4851-2, Added 8-Lead MSOP ..................... Universal Changes to Features ..........................................................................1 Changes to General Description .....................................................1 Changes to Table 1.............................................................................3 Changes to Table 2.............................................................................4 Changes to Table 3.............................................................................5 Changes to Table 4 and Figure 5 ......................................................6 Changes to Figure 12, Figure 15, and Figure 17 ............................8 Changes to Figure 18.........................................................................9 Changes to Figure 28 Caption ...................................................... 10 Changes to Figure 33...................................................................... 11 Changes to Figure 36 and Figure 38, Added Figure 39 ............. 12 Changes to Circuit Description Section ...................................... 13 Changes to Headroom Considerations Section ......................... 13 Changes to Overload Behavior and Recovery Section .............. 14 Added Single-Supply Video Amplifier Section .......................... 15 Updated Outline Dimensions ....................................................... 16 Changes to Ordering Guide .......................................................... 17 Rev. J | Page 2 of 24 ADA4851-1/ADA4851-2/ADA4851-4 1/05--Rev. 0 to Rev. A Added ADA4851-4 ............................................................ Universal Added 14-Lead TSSOP...................................................... Universal Changes to Features ..........................................................................1 Changes to General Description .....................................................1 Changes to Figure 3...........................................................................1 Changes to Specifications.................................................................3 Changes to Figure 4...........................................................................6 Changes to Figure 8...........................................................................7 Changes to Figure 11 ........................................................................8 Changes to Figure 22 ........................................................................9 Changes to Figure 23, Figure 24, and Figure 25..........................10 Changes to Figure 27 and Figure 28 .............................................10 Changes to Figure 29, Figure 30, and Figure 31..........................11 Changes to Figure 34 ......................................................................11 Added Figure 37 ..............................................................................12 Changes to Ordering Guide...........................................................15 Updated Outline Dimensions........................................................15 10/04--Revision 0: Initial Version Rev. J | Page 3 of 24 ADA4851-1/ADA4851-2/ADA4851-4 SPECIFICATIONS SPECIFICATIONS WITH +3 V SUPPLY TA = 25C, RF = 0 for G = +1, RF = 1 k for G > +1, RL = 1 k, unless otherwise noted. Table 1. Parameter DYNAMIC PERFORMANCE -3 dB Bandwidth Bandwidth for 0.1 dB Flatness Slew Rate Settling Time to 0.1% NOISE/DISTORTION PERFORMANCE Harmonic Distortion, HD2/HD3 Input Voltage Noise Input Current Noise Differential Gain Differential Phase Crosstalk (RTI)--ADA4851-2/ADA4851-4 DC PERFORMANCE Input Offset Voltage Conditions/Comments Min Typ G = +1, VOUT = 0.1 V p-p ADA4851-1W/2W/4W only: TMIN to TMAX G = +1, VOUT = 0.5 V p-p ADA4851-1W/2W/4W only: TMIN to TMAX G = +2, VOUT = 1 V p-p, RL = 150 G = +2, VOUT = 1 V p-p, RL = 150 G = +2, VOUT = 1 V step G = +2, VOUT = 1 V step, RL = 150 104 95 80 72 130 fC = 1 MHz, VOUT = 1 V p-p, G = -1 f = 100 kHz f = 100 kHz G = +3, NTSC, RL = 150 , VOUT = 2 V p-p G = +3, NTSC, RL = 150 , VOUT = 2 V p-p f = 5 MHz, G = +2, VOUT = 1.0 V p-p 40 15 100 50 -73/-79 10 2.5 0.44 0.41 -70/-60 dBc nV/Hz pA/Hz % Degrees dB 105 0.6 4 2.3 ADA4851-1W/2W/4W only: TMIN to TMAX Input Bias Current Drift Input Bias Offset Current Open-Loop Gain INPUT CHARACTERISTICS Input Resistance Input Capacitance Input Common-Mode Voltage Range Input Overdrive Recovery Time (Rise/Fall) Common-Mode Rejection Ratio POWER-DOWN--ADA4851-1 ONLY Power-Down Input Voltage Turn-Off Time Turn-On Time Power-Down Bias Current Enabled Power-Down VOUT = 0.25 V to 0.75 V ADA4851-1W/2W/4W only: TMIN to TMAX ADA4851-1W only: TMIN to TMAX 80 78 75 Differential/common-mode Unit MHz MHz MHz MHz MHz MHz V/s ns ADA4851-1W/2W/4W only: TMIN to TMAX Input Offset Voltage Drift Input Bias Current Max 3.3 7.3 4.0 5.0 6 20 105 mV mV V/C A A nA/C nA dB dB 0.5/5.0 1.2 -0.2 to +0.8 60/60 -103 M pF V ns dB dB Power-down Power-up <1.1 >1.6 0.7 60 V V s ns POWER DOWN = 3 V ADA4851-1W only: TMIN to TMAX POWER DOWN = 0 V ADA4851-1W only: TMIN to TMAX 4 VIN = +3.5 V, -0.5 V, G = +1 VCM = 0 V to 0.5 V ADA4851-1W/2W/4W only: TMIN to TMAX Rev. J | Page 4 of 24 -81 -65 -14 10 10 -20 -20 A A A A ADA4851-1/ADA4851-2/ADA4851-4 Parameter OUTPUT CHARACTERISTICS Output Overdrive Recovery Time (Rise/Fall) Output Voltage Swing Short-Circuit Current POWER SUPPLY Operating Range Quiescent Current per Amplifier Quiescent Current (Power-Down) Positive Power Supply Rejection Negative Power Supply Rejection Conditions/Comments Min VIN = +0.7 V, -0.1 V, G = +5 ADA4851-1W/2W/4W only: TMIN to TMAX Sinking/sourcing 0.05 to 2.91 0.06 to 2.89 Typ 70/100 0.03 to 2.94 2.4 Rev. J | Page 5 of 24 0.2 -81 -81 -80 -80 -100 -100 Unit ns V V mA 90/70 2.7 ADA4851-1W/2W/4W only: TMIN to TMAX POWER DOWN = low ADA4851-1W only: TMIN to TMAX +VS = +2.5 V to +3.5 V, -VS = -0.5 V ADA4851-1W/2W/4W only: TMIN to TMAX +VS = +2.5 V, -VS = -0.5 V to -1.5 V ADA4851-1W/2W/4W only: TMIN to TMAX Max 12 2.7 2.7 0.3 0.3 V mA mA mA mA dB dB dB dB ADA4851-1/ADA4851-2/ADA4851-4 SPECIFICATIONS WITH +5 V SUPPLY TA = 25C, RF = 0 for G = +1, RF = 1 k for G > +1, RL = 1 k, unless otherwise noted. Table 2. Parameter DYNAMIC PERFORMANCE -3 dB Bandwidth Bandwidth for 0.1 dB Flatness Slew Rate Settling Time to 0.1% NOISE/DISTORTION PERFORMANCE Harmonic Distortion, HD2/HD3 Input Voltage Noise Input Current Noise Differential Gain Differential Phase Crosstalk (RTI)--ADA4851-2/ADA4851-4 DC PERFORMANCE Input Offset Voltage Conditions Min Typ G = +1, VOUT = 0.1 V p-p ADA4851-1W/2W/4W only: TMIN to TMAX G = +1, VOUT = 0.5 V p-p ADA4851-1W/2W/4W only: TMIN to TMAX G = +2, VOUT = 1.4 V p-p, RL = 150 G = +2, VOUT = 1.4 V p-p, RL = 150 G = +2, VOUT = 2 V step G = +2, VOUT = 2 V step, RL = 150 96 90 72 64 125 fC = 1 MHz, VOUT = 2 V p-p, G = +1 f = 100 kHz f = 100 kHz G = +2, NTSC, RL = 150 , VOUT = 2 V p-p G = +2, NTSC, RL = 150 , VOUT = 2 V p-p f = 5 MHz, G = +2, VOUT = 2.0 V p-p 35 11 200 55 -80/-100 10 2.5 0.08 0.11 -70/-60 dBc nV/Hz pA/Hz % Degrees dB 96 0.6 4 2.2 ADA4851-1W/2W/4W only: TMIN to TMAX Input Bias Current Drift Input Bias Offset Current Open-Loop Gain INPUT CHARACTERISTICS Input Resistance Input Capacitance Input Common-Mode Voltage Range Input Overdrive Recovery Time (Rise/Fall) Common-Mode Rejection Ratio POWER-DOWN--ADA4851-1 ONLY Power-Down Input Voltage Turn-Off Time Turn-On Time Power-Down Bias Current Enabled Power-Down VOUT = 1 V to 4 V ADA4851-1W/2W/4W only: TMIN to TMAX 97 90 Differential/common-mode Unit MHz MHz MHz MHz MHz MHz V/s ns ADA4851-1W/2W/4W only: TMIN to TMAX Input Offset Voltage Drift Input Bias Current Max 3.4 7.4 3.9 4.9 6 20 107 mV mV V/C A A nA/C nA dB dB 0.5/5.0 1.2 -0.2 to +2.8 50/45 -105 M pF V ns dB dB Power-down Power-up <1.1 >1.6 0.7 50 V V s ns POWER DOWN = 5 V ADA4851-1W only: TMIN to TMAX POWER DOWN = 0 V ADA4851-1W only: TMIN to TMAX 33 VIN = +5.5 V, -0.5 V, G = +1 VCM = 0 V to 2 V ADA4851-1W/2W/4W only: TMIN to TMAX Rev. J | Page 6 of 24 -86 -80 -22 40 40 -30 -30 A A A A ADA4851-1/ADA4851-2/ADA4851-4 Parameter OUTPUT CHARACTERISTICS Output Overdrive Recovery Time (Rise/Fall) Output Voltage Swing Linear Output Current Short-Circuit Current POWER SUPPLY Operating Range Quiescent Current per Amplifier Quiescent Current (Power-Down) Positive Power Supply Rejection Negative Power Supply Rejection Conditions Min VIN = +1.1 V, -0.1 V, G = +5 ADA4851-1W/2W/4W only: TMIN to TMAX 1% THD with 1 MHz, VOUT = 2 V p-p Sinking/sourcing 0.09 to 4.91 0.11 to 4.89 Typ 60/70 0.06 to 4.94 2.5 Rev. J | Page 7 of 24 0.2 -82 -82 -81 -81 -101 -101 Unit ns V V mA mA 66 110/90 2.7 ADA4851-1W/2W/4W only: TMIN to TMAX POWER DOWN = low ADA4851-1W only: TMIN to TMAX +VS = +5 V to +6 V, -VS = 0 V ADA4851-1W/2W/4W only: TMIN to TMAX +VS = +5 V, -VS = -0 V to -1 V ADA4851-1W/2W/4W only: TMIN to TMAX Max 12 2.8 2.8 0.3 0.3 V mA mA mA mA dB dB dB dB ADA4851-1/ADA4851-2/ADA4851-4 SPECIFICATIONS WITH 5 V SUPPLY TA = 25C, RF = 0 for G = +1, RF = 1 k for G > +1, RL = 1 k, unless otherwise noted. Table 3. Parameter DYNAMIC PERFORMANCE -3 dB Bandwidth Bandwidth for 0.1 dB Flatness Slew Rate Settling Time to 0.1% NOISE/DISTORTION PERFORMANCE Harmonic Distortion, HD2/HD3 Input Voltage Noise Input Current Noise Differential Gain Differential Phase Crosstalk (RTI)--ADA4851-2/ADA4851-4 DC PERFORMANCE Input Offset Voltage Conditions Min Typ G = +1, VOUT = 0.1 V p-p ADA4851-1W/2W/4W only: TMIN to TMAX G = +1, VOUT = 1 V p-p ADA4851-1W/2W/4W only: TMIN to TMAX G = +2, VOUT = 2 V p-p, RL = 150 G = +2, VOUT = 2 V p-p, RL = 150 G = +2, VOUT = 7 V step G = +2, VOUT = 2 V step G = +2, VOUT = 2 V step, RL = 150 83 75 52 42 105 fC = 1 MHz, VOUT = 2 V p-p, G = +1 f = 100 kHz f = 100 kHz G = +2, NTSC, RL = 150 , VOUT = 2 V p-p G = +2, NTSC, RL = 150 , VOUT = 2 V p-p f = 5 MHz, G = +2, VOUT = 2.0 V p-p 40 11 375 190 55 -83/-107 10 2.5 0.08 0.09 -70/-60 dBc nV/Hz pA/Hz % Degrees dB 74 0.6 4 2.2 ADA4851-1W/2W/4W only: TMIN to TMAX Input Bias Current Drift Input Bias Offset Current Open-Loop Gain INPUT CHARACTERISTICS Input Resistance Input Capacitance Input Common-Mode Voltage Range Input Overdrive Recovery Time (Rise/Fall) Common-Mode Rejection Ratio POWER-DOWN--ADA4851-1 ONLY Power-Down Input Voltage Turn-Off Time Turn-On Time Power-Down Bias Current Enabled Power-Down VOUT = 2.5 V ADA4851-1W/2W/4W only: TMIN to TMAX 99 90 Differential/common-mode Unit MHz MHz MHz MHz MHz MHz V/s V/s ns ADA4851-1W/2W/4W only: TMIN to TMAX Input Offset Voltage Drift Input Bias Current Max 3.5 7.5 4.0 4.5 6 20 106 mV mV V/C A A nA/C nA dB dB 0.5/5.0 1.2 -5.2 to +2.8 50/25 -105 M pF V ns dB dB Power-down Power-up < -3.9 > -3.4 0.7 30 V V s ns POWER DOWN = +5 V ADA4851-1W only: TMIN to TMAX POWER DOWN = -5 V ADA4851-1W only: TMIN to TMAX 100 VIN = 6 V, G = +1 VCM = 0 V to -4 V ADA4851-1W/2W/4W only: TMIN to TMAX Rev. J | Page 8 of 24 -90 -86 -50 130 130 -60 -60 A A A A ADA4851-1/ADA4851-2/ADA4851-4 Parameter OUTPUT CHARACTERISTICS Output Overdrive Recovery Time (Rise/Fall) Output Voltage Swing Linear Output Current Short-Circuit Current POWER SUPPLY Operating Range Quiescent Current per Amplifier Quiescent Current (Power-Down) Positive Power Supply Rejection Negative Power Supply Rejection Conditions Min VIN = 1.2 V, G = +5 ADA4851-1W/2W/4W only: TMIN to TMAX 1% THD with 1 MHz, VOUT = 2 V p-p Sinking/sourcing -4.87 to +4.88 -4.85 to +4.85 Typ 80/50 -4.92 to +4.92 2.9 Rev. J | Page 9 of 24 0.2 -82 -82 -81 -81 -101 -102 Unit ns V V mA mA 83 125/110 2.7 ADA4851-1W/2W/4W only: TMIN to TMAX POWER DOWN = low ADA4851-1W only: TMIN to TMAX +VS = +5 V to +6 V, -VS = -5 V ADA4851-1W/2W/4W only: TMIN to TMAX +VS = +5 V, -VS = -5 V to -6 V ADA4851-1W/2W/4W only: TMIN to TMAX Max 12 3.2 3.2 0.325 0.325 V mA mA mA mA dB dB dB dB ADA4851-1/ADA4851-2/ADA4851-4 ABSOLUTE MAXIMUM RATINGS PD = Quiescent Power + (Total Drive Power - Load Power) Table 4. Rating 12.6 V See Figure 5 -VS - 0.5 V to +VS + 0.5 V +VS to -VS -65C to +125C -40C to +125C JEDEC J-STD-20 150C Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. THERMAL RESISTANCE JA is specified for the worst-case conditions; that is, JA is specified for device soldered in circuit board for surface-mount packages. V V V 2 PD = (VS x I S ) + S x OUT - OUT RL RL 2 RMS output voltages should be considered. If RL is referenced to -VS, as in single-supply operation, the total drive power is VS x IOUT. If the rms signal levels are indeterminate, consider the worst case, when VOUT = VS/4 for RL to midsupply. PD = (VS x I S ) + RL In single-supply operation with RL referenced to -VS, the worst case is VOUT = VS/2. Airflow increases heat dissipation, effectively reducing JA. In addition, more metal directly in contact with the package leads and through holes under the device reduces JA. Figure 5 shows the maximum safe power dissipation in the package vs. the ambient temperature for the 6-lead SOT-23 (170C/W), the 8-lead MSOP (150C/W), and the 14-lead TSSOP (120C/W) on a JEDEC standard 4-layer board. JA values are approximations. 2.0 JA 170 150 120 Unit C/W C/W C/W Maximum Power Dissipation The maximum safe power dissipation for the ADA4851-1/ ADA4851-2/ADA4851-4 is limited by the associated rise in junction temperature (TJ) on the die. At approximately 150C, which is the glass transition temperature, the plastic changes its properties. Even temporarily exceeding this temperature limit may change the stresses that the package exerts on the die, permanently shifting the parametric performance of the amplifiers. Exceeding a junction temperature of 150C for an extended period can result in changes in silicon devices, potentially causing degradation or loss of functionality. MAXIMUM POWER DISSIPATION (W) Table 5. Thermal Resistance Package Type 6-lead SOT-23 8-lead MSOP 14-lead TSSOP (VS / 4 )2 TSSOP 1.5 MSOP 1.0 SOT-23-6 0.5 0 -55 -45 -35 -25 -15 -5 5 15 25 35 45 55 65 75 85 95 105 115 125 AMBIENT TEMPERATURE (C) 05143-057 Parameter Supply Voltage Power Dissipation Common-Mode Input Voltage Differential Input Voltage Storage Temperature Range Operating Temperature Range Lead Temperature Junction Temperature Figure 5. Maximum Power Dissipation vs. Temperature for a 4-Layer Board ESD CAUTION The power dissipated in the package (PD) is the sum of the quiescent power dissipation and the power dissipated in the die due to the drive of the amplifier at the output. The quiescent power is the voltage between the supply pins (VS) times the quiescent current (IS). Rev. J | Page 10 of 24 ADA4851-1/ADA4851-2/ADA4851-4 TYPICAL PERFORMANCE CHARACTERISTICS TA = 25C, RF = 0 for G = +1, RF = 1 k for G > +1, RL = 1 k, unless otherwise noted. 1 0 2 G = -1 -1 -2 -3 G = +10 -4 G = +2 -5 10pF G = +1 VS = 5V RL = 1k VOUT = 0.1V p-p 3 CLOSED-LOOP GAIN (dB) CLOSED-LOOP GAIN (dB) 4 VS = 5V RL = 150 VOUT = 0.1V p-p 1 0 5pF -1 0pF -2 -3 -4 -6 10 100 FREQUENCY (MHz) -6 05143-006 1 Figure 6. Small-Signal Frequency Response for Various Gains 1 10 100 Figure 9. Small-Signal Frequency Response for Various Capacitive Loads 1 1 +125C RL = 150 0 VS = 5V G = +1 VOUT = 0.1V p-p -1 CLOSED-LOOP GAIN (dB) RL = 1k -2 -3 -4 -40C +25C -2 -3 -4 10 100 300 -6 05143-009 1 Figure 7. Small-Signal Frequency Response for Various Loads 1 10 100 Figure 10. Small-Signal Frequency Response for Various Temperatures 1 2 G = +1 RL = 150 VOUT = 0.1V p-p 1 VS = +5V VS = 5V RL = 150 VOUT = 1V p-p 0 CLOSED-LOOP GAIN (dB) 0 -1 300 FREQUENCY (MHz) 05143-008 -5 FREQUENCY (MHz) VS = 5V -2 -3 -4 -5 -1 -2 -3 -4 G = +2 G = +10 -5 G = -1 -6 1 10 100 300 FREQUENCY (MHz) 05143-007 CLOSED-LOOP GAIN (dB) VS = 5V G = +1 VOUT = 0.1V p-p -1 -5 -6 +85C Figure 8. Small-Signal Frequency Response for Various Supplies -7 1 10 100 FREQUENCY (MHz) Figure 11. Large-Signal Frequency Response for Various Gains Rev. J | Page 11 of 24 05143-012 CLOSED-LOOP GAIN (dB) 0 -6 300 FREQUENCY (MHz) 05143-010 -5 -7 ADA4851-1/ADA4851-2/ADA4851-4 6.2 6.0 5.9 VOUT = 100mV p-p 5.8 VOUT = 1V p-p VOUT = 2V p-p 5.7 G = -1 VS = 3V RL = 150 VOUT = 2V -50 HARMONIC DISTORTION (dBc) 6.1 5.6 HD2 -60 -70 -80 HD3 -90 10 100 FREQUENCY (MHz) -110 0.1 -50 VS = 5V G = +1 VOUT = 1V p-p -1 RL = 1k -2 G = +2 VS = 5V RL = 1k f = 2MHz -60 HARMONIC DISTORTION (dBc) 0 CLOSED-LOOP GAIN (dB) 10 Figure 15. Harmonic Distortion vs. Frequency 1 RL = 150 -3 -4 HD2 -70 -80 HD3 -90 -100 -110 -5 10 100 300 -120 05143-015 1 FREQUENCY (MHz) 0 0 -40 -30 -50 -90 -120 60 -150 40 GAIN 20 -180 0 -210 -20 10 100 1k 10k 100k 1M 10M 100M FREQUENCY (Hz) -240 1G HARMONIC DISTORTION (dBc) 80 3 4 5 6 7 8 9 G = +1 VOUT = 2V p-p VS = 5V -60 RL = 1k HD2 -70 -80 RL = 150 HD2 RL = 150 HD3 -90 RL = 1k HD3 -100 05143-029 -60 PHASE OPEN-LOOP PHASE (Degrees) VS = 5V 100 2 Figure 16. Harmonic Distortion vs. Output Amplitude 140 120 1 OUTPUT AMPLITUDE (V p-p) Figure 13. Large Frequency Response for Various Loads OPEN-LOOP GAIN (dB) 10 FREQUENCY (MHz) Figure 12. 0.1 dB Flatness Response for Various Output Amplitudes -6 1 05143-014 1 05143-021 5.4 0.1 05143-017 -100 5.5 -110 0.1 1 10 FREQUENCY (MHz) Figure 17. Harmonic Distortion vs. Frequency for Various Loads Figure 14. Open-Loop Gain and Phase vs. Frequency Rev. J | Page 12 of 24 05143-016 CLOSED-LOOP GAIN (dB) -40 VS = 5V G = +2 RL = 150 RF = 1k ADA4851-1/ADA4851-2/ADA4851-4 OUTPUT VOLTAGE FOR 5V SUPPLY (V) -60 RL = 1k HD2 -70 -80 RL = 150 HD2 RL = 150 HD3 -90 -100 RL = 1k HD3 -110 0.1 10 1 FREQUENCY (MHz) 0.050 2.550 0.025 2.525 0 2.500 -0.025 5 x INPUT 3 50 100 2.425 200 150 TIME (ns) 2.575 2 1 0 -1 -2 10pF G = +1 VS = 5V RL = 150 2.550 OUTPUT VOLTAGE (V) INPUT AND OUTPUT VOLTAGE (V) 4 0 Figure 21. Small-Signal Transient Response for Various Supplies G = +5 VS = 5V RL = 150 f = 1MHz OUTPUT 5 2.475 2.450 -0.050 Figure 18. Harmonic Distortion vs. Frequency for Various Loads 6 VS = 5V VS = +5V -0.075 05143-013 HARMONIC DISTORTION (dBc) -50 2.575 G = +1 OR +2 RL = 1k OUTPUT VOLTAGE FOR 5V SUPPLY (V) 0.075 G = +1 VOUT = 2V p-p VS = 5V 05143-024 -40 0pF 2.525 2.500 2.475 -3 2.450 -4 200 300 400 500 600 700 800 900 1k TIME (ns) Figure 19. Output Overdrive Recovery 6 3 OUTPUT 2 1 0 -1 -2 -3 -4 -5 -6 0 100 200 300 400 500 600 700 800 TIME (ns) 40 60 80 100 120 140 160 1.5 OUTPUT VOLTAGE FOR 5V SUPPLY (V) 4 20 180 200 Figure 22. Small-Signal Transient Response for Various Capacitive Loads G = +1 VS = 5V RL = 150 f = 1MHz INPUT 0 TIME (ns) 900 1k 05143-022 INPUT AND OUTPUT VOLTAGE (V) 5 2.425 Figure 20. Input Overdrive Recovery 3.0 G = +2 RL = 150 1.0 2.5 VS = 5V VS = +5V 0.5 2.0 0 1.5 -0.5 1.0 -1.0 0.5 -1.5 0 50 100 150 0 200 TIME (ns) Figure 23. Large-Signal Transient Response for Various Supplies Rev. J | Page 13 of 24 OUTPUT VOLTAGE FOR 5V SUPPLY (V) 100 05143-028 0 05143-019 -6 05143-026 -5 ADA4851-1/ADA4851-2/ADA4851-4 VS = +5V 2.0 0 1.5 -0.5 1.0 -1.0 0.5 0 50 100 0 200 150 TIME (ns) 4 3 2 1 0 VOUT -1 0 3.5 3.0 +VS - VOUT VS = 5V SUPPLY CURRENT (mA) 0.4 VS = 5V VS = +3V 0.3 -VS - VOUT 0.2 2.5 VS = +5V 2.0 VS = +3V 1.5 1.0 0.1 0 5 10 15 20 25 30 35 LOAD CURRENT (mA) 0 -5 0 1 2 3 4 5 INPUT OFFSET VOLTAGE (V) 200 300 POSITIVE SLEW RATE 200 100 VS = +3V 100 VS = 5V 0 VS = +5V -100 -200 0 1 2 3 4 5 6 7 8 OUTPUT VOLTAGE STEP (V p-p) 9 10 -400 -40 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE (C) Figure 29. Input Offset Voltage vs. Temperature for Various Supplies Figure 26. Slew Rate vs. Output Voltage Step Rev. J | Page 14 of 24 05143-035 -300 05143-032 0 -1 300 NEGATIVE SLEW RATE 400 -2 Figure 28. ADA4851-1, Supply Current vs. POWER DOWN Pin Voltage G = +2 VS = 5V RL = 1k 25% TO 75% OF VOUT 500 -3 POWER DOWN VOLTAGE (V) Figure 25. Output Saturation Voltage vs. Load Current 600 -4 05143-034 0.5 05143-049 DC VOLTAGE DIFFERENTIAL FROM VS (V) 45 Figure 27. ADA4851-1, Power-Up/Power-Down Time 0.5 SLEW RATE (V/s) 30 TIME (s) Figure 24. Large-Signal Transient Response for Various Supplies 0 15 05143-033 VS = 5V 0.5 5 VOLTAGE (V) 2.5 G = +2 VS = 5V fIN = 400kHz VPOWER DOWN OUTPUT VOLTAGE FOR 5V SUPPLY (V) 1.0 -1.5 6 3.0 G = +1 RL = 150 05143-027 OUTPUT VOLTAGE FOR 5V SUPPLY (V) 1.5 ADA4851-1/ADA4851-2/ADA4851-4 2.2 1000 G = +1 IB+, VS = 5V 1.8 IB-, VS = 5V IB+, VS = +5V 1.6 IB-, VS = +5V 1.2 -40 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE (C) 10 1 10 05143-036 1.4 100 100 100k 1M 10M 100M Figure 33. Voltage Noise vs. Frequency 0.09 100 G = +2 VS = 5V CURRENT NOISE (pA/ Hz) 0.08 +VS - VOUT VS = +5V 0.07 +VS - VOUT -VS - VOUT 0.06 10 0.05 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE (C) 1 10 100 10k 100k 1M 10M 100M 4 FREQUENCY (Hz) Figure 31. Output Saturation vs. Temperature for Various Supplies Figure 34. Current Noise vs. Frequency 80 3.2 VS = 5V VS = 5V N = 420 x = -260V = 780V 70 3.0 60 2.8 COUNT 50 VS = +5V 2.6 40 30 2.4 VS = +3V 20 2.2 10 0 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE (C) 05143-038 2.0 -40 1k 05143-045 0.04 -40 05143-047 -VS - VOUT 05143-037 DC VOLTAGE DIFFERENTIAL FROM VS (V) 10k FREQUENCY (Hz) Figure 30. Input Bias Current vs. Temperature for Various Supplies SUPPLY CURRENT (mA) 1k 05143-044 VOLTAGE NOISE (nV/ Hz) INPUT BIAS CURRENT (A) 2.0 -4 -3 -2 -1 0 1 2 3 VOS (mV) Figure 35. Input Offset Voltage Distribution Figure 32. Supply Current vs. Temperature for Various Supplies Rev. J | Page 15 of 24 ADA4851-1/ADA4851-2/ADA4851-4 0 -30 VS = 5V -20 -50 DRIVE AMPS 1, 2, AND 4 LISTEN AMP 3 -30 -60 -70 -80 -90 -40 -50 -60 DRIVE AMP 1 LISTEN AMP 2 -70 -100 -80 -110 1k 10k 100k 1M 10M 100M 1G FREQUENCY (Hz) 1 100 Figure 38. ADA4851-4, RTI Crosstalk vs. Frequency Figure 36. Common-Mode Rejection Ratio (CMRR) vs. Frequency 0 0 VS = 5V -10 -20 -20 -30 +PSR -50 -60 -30 CROSSTALK (dB) -40 -PSR -70 -40 -50 -60 -70 -90 -80 -100 -90 1k 10k 100k 1M 10M 100M FREQUENCY (Hz) 1G 05143-023 -80 -110 100 G = +2 VS = 5V RL = 1k VIN = 1V p-p -100 0.1 DRIVE AMP 1 LISTEN AMP 2 DRIVE AMP 2 LISTEN AMP 1 1 10 100 FREQUENCY (MHz) Figure 39. ADA4851-2, RTI Crosstalk vs. Frequency Figure 37. Power Supply Rejection (PSR) vs. Frequency Rev. J | Page 16 of 24 05143-060 -10 POWER SUPPLY REJECTION (dB) 10 FREQUENCY (MHz) 05143-055 -90 -100 0.1 05143-020 -120 G = +2 VS = 5V RL = 1k VIN = 1V p-p -10 CROSSTALK (dB) COMMON-MODE REJECTION (dB) -40 ADA4851-1/ADA4851-2/ADA4851-4 CIRCUIT DESCRIPTION 460 480 500 540 These amplifiers are designed for use in low voltage systems. To obtain optimum performance, it is useful to understand the behavior of the amplifiers as input and output signals approach the headroom limits of the amplifiers. The input common-mode voltage range of the amplifiers extends from the negative supply voltage (actually 200 mV below the negative supply), or from ground for single-supply operation, to within 2.2 V of the positive supply voltage. Therefore, at a gain of 3, the amplifiers can provide full rail-to-rail output swing for supply voltages as low as 3.3 V and down to 3 V for a gain of 4. 580 600 -6 -5 -4 -3 -2 -1 0 1 2 4 05143-046 The input stage is the headroom limit for signals approaching the positive rail. Figure 40 shows a typical offset voltage vs. the input common-mode voltage for the ADA4851-1/ADA4851-2/ ADA4851-4 amplifiers on a 5 V supply. Accurate dc performance is maintained from approximately 200 mV below the negative supply to within 2.2 V of the positive supply. For high speed signals, however, there are other considerations. Figure 41 shows -3 dB bandwidth vs. input common-mode voltage for a unity-gain follower. As the common-mode voltage approaches 2 V of positive supply, the amplifier responds well but the bandwidth begins to drop as the common-mode voltage approaches the positive supply. This can manifest itself in increased distortion or settling time. Higher frequency signals require more headroom than the lower frequencies to maintain distortion performance. 560 1000 3 VCM (V) Figure 40. VOS vs. Common-Mode Voltage, VS = 5 V 2 1 G = +1 RL = 1k VS = 5V VCM = 3.0V 0 VCM = 3.1V -1 GAIN (dB) Exceeding the headroom limit is not a concern for any inverting gain on any supply voltage as long as the reference voltage at the positive input of the amplifier lies within the input common- mode range of the amplifier. 520 05143-050 HEADROOM CONSIDERATIONS 440 VOS (V) The ADA4851-1/ADA4851-2/ADA4851-4 feature a high slew rate input stage that is a true single-supply topology, capable of sensing signals at or below the negative supply rail. The rail-torail output stage can pull within 60 mV of either supply rail when driving light loads and within 0.17 V when driving 150 . High speed performance is maintained at supply voltages as low as 2.7 V. Rev. J | Page 17 of 24 -2 VCM = 3.2V -3 VCM = 3.3V -4 -5 -6 0.1 1 10 100 FREQUENCY (MHz) Figure 41. Unity-Gain Follower Bandwidth vs. Input Common-Mode ADA4851-1/ADA4851-2/ADA4851-4 The amplifiers do not exhibit phase reversal, even for input voltages beyond the voltage supply rails. Going more than 0.6 V beyond the power supplies turns on protection diodes at the input stage, which greatly increases the current draw of the devices. For signals approaching the negative supply and inverting gain and high positive gain configurations, the headroom limit is the output stage. The ADA4851-1/ADA4851-2/ADA4851-4 amplifiers use a common emitter output stage. This output stage maximizes the available output range, limited by the saturation voltage of the output transistors. The saturation voltage increases with the drive current that the output transistor is required to supply due to the collector resistance of the output transistor. 3.6 3.50 VSTEP = 2.25V TO 3.25V 3.00 VSTEP = 2.25V TO 3.5V, 4V, AND 5V 2.75 2.50 G = +1 RL = 1k VS = 5V 3.4 G = +1 RL = 1k VS = 5V 3.25 OUTPUT VOLTAGE (V) Figure 42 illustrates how the rising edge settling time for the amplifier is configured as a unity-gain follower, stretching out as the top of a 1 V step input that approaches and exceeds the specified input common-mode voltage limit. 2.25 0 100 200 300 400 VSTEP = 2V TO 3V 2.8 VSTEP = 2.2V TO 3.2V 2.4 2.2 900 1k Output Output overload recovery is typically within 35 ns after the input of the amplifier is brought to a nonoverloading value. Figure 44 shows output recovery transients for the amplifier configured in an inverting gain of 1 recovering from a saturated output from the top and bottom supplies to a point at midsupply. 30 40 50 60 70 80 90 05143-052 20 800 VSTEP = 2.4V TO 3.4V 1.8 10 700 VSTEP = 2.3V TO 3.3V 2.0 0 600 Figure 43. Pulse Response of G = +1 Follower, Input Step Overloading the Input Stage VSTEP = 2.1V TO 3.1V 2.6 500 TIME (ns) 05143-051 2.00 3.0 100 TIME (ns) Figure 42. Output Rising Edge for 1 V Step at Input Headroom Limits 7 OVERLOAD BEHAVIOR AND RECOVERY Input The specified input common-mode voltage of the ADA4851-1/ ADA4851-2/ADA4851-4 is 200 mV below the negative supply to within 2.2 V of the positive supply. Exceeding the top limit results in lower bandwidth and increased rise time, as shown in Figure 41 and Figure 42. Pushing the input voltage of a unitygain follower to less than 2 V from the positive supply leads to the behavior shown in Figure 43--an increasing amount of output error as well as a much increased settling time. The recovery time from input voltages of 2.2 V or closer to the positive supply is approximately 55 ns, which is limited by the settling artifacts caused by transistors in the input stage coming out of saturation. 6 INPUT AND OUTPUT VOLTAGE (V) As the saturation point of the output stage is approached, the output signal shows increasing amounts of compression and clipping. As in the input headroom case, higher frequency signals require slightly more headroom than the lower frequency signals. Figure 16 illustrates this point by plotting the typical harmonic distortion vs. the output amplitude. Rev. J | Page 18 of 24 G = -1 RL = 1k VS = 5V VOUT = 5V TO 2.5V 5 VOUT = 0V TO 2.5V 4 3 INPUT VOLTAGE EDGES 2 1 0 -1 -2 0 10 20 30 40 50 60 70 TIME (ns) Figure 44. Overload Recovery 80 90 100 05143-053 OUTPUT VOLTAGE (V) 3.2 ADA4851-1/ADA4851-2/ADA4851-4 SINGLE-SUPPLY VIDEO AMPLIFIER The ADA4851 family of amplifiers is well suited for portable video applications. When operating in low voltage single-supply applications, the input signal is limited by the input stage headroom. For additional information, see the Headroom Considerations section. Table 6 shows the recommended values for voltage, input signal, various gains, and output signal swing for the typical video amplifier shown in Figure 45. RF +VS An example of an 8 MHz, three-pole, Sallen-Key, low-pass, video reconstruction filter is shown in Figure 46. This circuit features a gain of 3, has a 0.1 dB bandwidth of 8.2 MHz, and over 17 dB attenuation at 27 MHz (see Figure 47). The filter has three poles; two are active with a third passive pole (R6 and C4) placed at the output. C3 improves the filter roll-off. R6, R7, and R8 comprise the video load of 150 . Components R6, C4, R7, R8, and the input termination of the network analyzer form a 12.8 dB attenuator; therefore, the reference level is roughly -3.3 dB, as shown in Figure 47. C1 2.2F C2 51pF + R2 R3 47 125 IOUT U1 75 CABLE 75 V VIN VIDEO DAC VOUT 75 R1 37.4 +3V C1 51pF R5 1k R7 68.1 R8 75 C4 1nF R4 2k Figure 45. Video Amplifier R6 6.8 C3 6.8pF Table 6. Recommended Values Supply Voltage (V) 3 3 5 Input Range (V) 0 to 0.8 0 to 0.8 0 to 2.8 Figure 46. 8 MHz Video Reconstruction Filter Schematic RG (k) 1 0.499 1 RF (k) 1 1 1 Gain (V/V) 2 3 2 V' (V) 1.6 2.4 4.9 VOUT (V) 0.8 1.2 2.45 5dB/REF -15dB 1: -3.3931dB 8.239626MHz 1 VIDEO RECONSTRUCTION FILTER Rev. J | Page 19 of 24 0.03 0.1 1 FREQUENCY (MHz) 10 100 05143-062 At higher frequencies, active filters require wider bandwidths to work properly. Excessive phase shift introduced by lower frequency op amps can significantly affect the filter performance. A common application for active filters is at the output of video DACs/encoders. The filter, or more appropriately, the video reconstruction filter, is used at the output of a video DAC/ encoder to eliminate the multiple images that are created during the sampling process within the DAC. For portable video applications, the ADA4851 family of amplifiers is an ideal choice due to its lower power requirements and high performance. VOUT 05143-061 C2 0.01F 05143-059 PD RG Figure 47. Video Reconstruction Filter Frequency Performance ADA4851-1/ADA4851-2/ADA4851-4 OUTLINE DIMENSIONS 3.00 2.90 2.80 1.70 1.60 1.50 6 5 4 1 2 3 PIN 1 INDICATOR 3.00 2.80 2.60 0.95 BSC 1.90 BSC 0.20 MAX 0.08 MIN 1.45 MAX 0.95 MIN 0.15 MAX 0.05 MIN 10 4 0 SEATING PLANE 0.50 MAX 0.30 MIN 0.60 BSC 0.55 0.45 0.35 121608-A 1.30 1.15 0.90 COMPLIANT TO JEDEC STANDARDS MO-178-AB Figure 48. 6-Lead Small Outline Transistor Package [SOT-23] (RJ-6) Dimensions shown in millimeters 3.20 3.00 2.80 3.20 3.00 2.80 8 1 5.15 4.90 4.65 5 4 PIN 1 IDENTIFIER 0.65 BSC 0.95 0.85 0.75 15 MAX 1.10 MAX 0.40 0.25 6 0 0.23 0.09 COMPLIANT TO JEDEC STANDARDS MO-187-AA Figure 49. 8-Lead Mini Small Outline Package [MSOP] (RM-8) Dimensions shown in millimeters Rev. J | Page 20 of 24 0.80 0.55 0.40 10-07-2009-B 0.15 0.05 COPLANARITY 0.10 ADA4851-1/ADA4851-2/ADA4851-4 5.10 5.00 4.90 14 8 4.50 4.40 4.30 6.40 BSC 1 7 PIN 1 0.65 BSC 1.20 MAX 0.15 0.05 COPLANARITY 0.10 0.30 0.19 0.20 0.09 SEATING PLANE 8 0 0.75 0.60 0.45 COMPLIANT TO JEDEC STANDARDS MO-153-AB-1 061908-A 1.05 1.00 0.80 Figure 50. 14-Lead Thin Shrink Small Outline Package [TSSOP] (RU-14) Dimensions shown in millimeters ORDERING GUIDE Model 1, 2 ADA4851-1YRJZ-R2 ADA4851-1YRJZ-RL ADA4851-1YRJZ-RL7 ADA4851-1WYRJZ-R7 ADA4851-2YRMZ ADA4851-2YRMZ-RL ADA4851-2YRMZ-RL7 ADA4851-2WYRMZ-R7 ADA4851-4YRUZ ADA4851-4YRUZ-RL ADA4851-4YRUZ-RL7 ADA4851-4WYRUZ-R7 ADA4851-1YRJ-EBZ ADA4851-2YRM-EBZ ADA4851-4YRU-EBZ 1 2 Temperature Range -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C Package Description 6-Lead Small Outline Transistor Package (SOT-23) 6-Lead Small Outline Transistor Package (SOT-23) 6-Lead Small Outline Transistor Package (SOT-23) 6-Lead Small Outline Transistor Package (SOT-23) 8-Lead Mini Small Outline Package (MSOP) 8-Lead Mini Small Outline Package (MSOP) 8-Lead Mini Small Outline Package (MSOP) 8-Lead Mini Small Outline Package (MSOP) 14-Lead Thin Shrink Small Outline Package (TSSOP) 14-Lead Thin Shrink Small Outline Package (TSSOP) 14-Lead Thin Shrink Small Outline Package (TSSOP) 14-Lead Thin Shrink Small Outline Package (TSSOP) 6-Lead SOT-23 Evaluation Board 8-Lead MSOP Evaluation Board 14-Lead TSSOP Evaluation Board Package Option RJ-6 RJ-6 RJ-6 RJ-6 RM-8 RM-8 RM-8 RM-8 RU-14 RU-14 RU-14 RU-14 Branding HHB HHB HHB H1Z HSB HSB HSB H1Y Z = RoHS Compliant Part. W = qualified for automotive applications. AUTOMOTIVE PRODUCTS The ADA4851-1W/ADA4851-2W/ADA4851-4W models are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. Note that these automotive models may have specifications that differ from the commercial models; therefore, designers should review the Specifications section of this data sheet carefully. Only the automotive grade products shown are available for use in automotive applications. Contact your local Analog Devices, Inc., account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for these models. Rev. J | Page 21 of 24 ADA4851-1/ADA4851-2/ADA4851-4 NOTES Rev. J | Page 22 of 24 ADA4851-1/ADA4851-2/ADA4851-4 NOTES Rev. J | Page 23 of 24 ADA4851-1/ADA4851-2/ADA4851-4 NOTES (c)2004-2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D05143-0-10/10(J) Rev. J | Page 24 of 24 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Analog Devices Inc.: ADA4851-1YRJ-EBZ ADA4851-2YRM-EBZ