TP2401/TP2402 /TP2404 20MHz Bandwidth, Low Noise CMOS Opamps Features Gain-bandwidth Product: 20MHz Low Noise: 7.3nV/Hz(f= 1kHz) Slew Rate: 25 V/s Offset Voltage: 1 mV (max) Low THD+N: 0.0005% Supply Range: 2.2V to 5.5V Supply Current: 3.5 mA/ch Low Input Bias Current: 0.3pA Typical Rail-to-Rail I/O High Output Current: 70mA (1.0V Drop) -40C to 125C Operation Range Robust 8kV - HBM and 2kV - CDM ESD Rating Applications Sensor Signal Conditioning Consumer Audio Multi-Pole Active Filters Control-Loop Amplifiers Communications Security Scanners Description The TP240x series consists of single, dual, and quad-channel CMOS operational amplifiers featuring low noise and rail-to-rail inputs/outputs optimized for low-power, single-supply applications. Specified over a wide supply range of 2.2 V to 5.5 V, the low quiescent current of only 3.5 mA per channel makes these devices well-suited for power-sensitive applications. The combination of very low noise (7.3 nV/Hz at 1 kHz), high gain-bandwidth (20 MHz), and fast slew rate (25 V/s) make the TP240x family ideal for a wide range of applications, including signal conditioning and sensor amplification requiring high gains. Featuring low THD+N, the TP240x series is also excellent for consumer audio applications, particularly for single-supply systems. The TP2401 is single channel version available in 8-pin SOIC and 5-pin SOT23 packages. The TP2402 is dual channel version available in 8-pin SOIC and MSOP packages. The TP2404 is quad channel version available in 14-pin SOIC and TSSOP packages. 3PEAK and the 3PEAK logo are registered trademarks of 3PEAK INCORPORATED. All other trademarks are the property of their respective owners. Pin Configuration (Top View) Input Voltage Noise Spectral Density Noise(nV/Hz) 1000 100 10 1 1 10 100 1k 10k 100k 1M Frequency(Hz) www.3peakic.com Rev. A 1 TP2401 / TP2402 / TP2404 20MHz Bandwidth, Low Noise CMOS Opamps Order Information Model Name TP2401 TP2402 TP2404 Order Number Package Marking Information Transport Media, Quantity TP2401-SR 8-Pin SOIC Tape and Reel, 4,000 TP2401 TP2401-TR 5-Pin SOT23 Tape and Reel, 3,000 401 TP2402-SR 8-Pin SOIC Tape and Reel, 4,000 TP2402 TP2402-VR 8-Pin MSOP Tape and Reel, 3,000 TP2402 TP2404-SR 14-Pin SOIC Tape and Reel, 2,500 TP2404 TP2404-TR 14-Pin TSSOP Tape and Reel, 3,000 TP2404 Absolute Maximum Ratings Note 1 Supply Voltage: V+ - V- Note 2................................7.0V - Current at Supply Pins.............................. 60mA + Input Voltage................................ V - 0.3 to V + 0.3 Operating Temperature Range........-40C to 125C 20mA Maximum Junction Temperature................... 150C Output Current: OUT..................................... 160mA Storage Temperature Range.......... -65C to 150C Output Short-Circuit Duration Note 4................... Infinite Lead Temperature (Soldering, 10 sec) ......... 260C Input Current: +IN, -IN Note 3............................. Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The op amp supplies must be established simultaneously, with, or before, the application of any input signals. Note 3: The inputs are protected by ESD protection diodes to each power supply. If the input extends more than 500mV beyond the power supply, the input current should be limited to less than 10mA. Note 4: A heat sink may be required to keep the junction temperature below the absolute maximum. This depends on the power supply voltage and how many amplifiers are shorted. Thermal resistance varies with the amount of PC board metal connected to the package. The specified values are for short traces connected to the leads. ESD, Electrostatic Discharge Protection Symbol Parameter Condition Minimum Level Unit HBM Human Body Model ESD MIL-STD-883H Method 3015.8 8 kV CDM Charged Device Model ESD JEDEC-EIA/JESD22-C101E 2 kV Thermal Resistance 2 Package Type JA JC Unit 5-Pin SOT23 250 81 C/W 8-Pin SOIC 158 43 C/W 8-Pin MSOP 210 45 C/W 14-Pin SOIC 120 36 C/W 14-Pin TSSOP 180 35 C/W Rev. A www.3peakic.com TP2401/TP2402 / TP2404 20MHz Bandwidth, Low Noise CMOS Opamps Electrical Characteristics The specifications are at TA = 27C. VS = +2.2 V to +5.5 V, or 1.1 V to 2.75 V, RL = 2k, CL =100pF.Unless otherwise noted. SYMBOL VOS PARAMETER CONDITIONS MIN TYP MAX UNITS -1 +1 2 mV Input Offset Voltage VCM = VDD/2 Input Offset Voltage Drift -40C to 125C 0.3 1 TA = 27 C 0.3 pA TA = 85 C 150 pA TA = 125 C 300 pA Input Offset Current 0.001 pA Vn Input Voltage Noise f = 0.1Hz to 10Hz 2.0 VPP en in Input Voltage Noise Density Input Current Noise 7.3 nV/Hz fA/Hz CIN Input Capacitance f = 1kHz f = 1kHz Differential Common Mode VCM = 2V to 3V VOS TC IB IOS CMRR Input Bias Current PSRR Common Mode Rejection Ratio Common-mode Input Voltage Range Power Supply Rejection Ratio AVOL VCM 80 2 7.76 6.87 100 V- -0.3 V/C pF dB V+-0.3 V VCM = 2.5V, VS = 4V to 5V 80 100 dB Open-Loop Large Signal Gain RLOAD = 2k 100 130 dB VOL, VOH Output Swing from Supply Rail RLOAD = 2k ROUT Closed-Loop Output Impedance G = 1, f =1MHz, IOUT = 0 RO Open-Loop Output Impedance f = 1kHz, IOUT = 0 ISC Output Short-Circuit Current Sink or source current VDD Supply Voltage 13 110 20 mV 0.043 125 130 2.2 200 mA 5.5 V 5 mA IQ Quiescent Current per Amplifier VDD = 5V 3.5 PM Phase Margin RLOAD = 1k, CLOAD = 60pF 60 GM Gain Margin RLOAD = 1k, CLOAD = 60pF 11 dB Gain-Bandwidth Product f = 1kHz AV = 1, VOUT = 1.5V to 3.5V, CLOAD = 60pF, RLOAD = 1k 20 MHz 25 V/s 5.21 0.29 0.45 MHz f = 1kHz, AV =1, RL = 2k, VOUT = 1Vp-p 123 dB f = 1kHz, RL = 2k 110 dB GBWP SR FPBW tS THD+N Xtalk Slew Rate Full Power Bandwidth Note 1 Settling Time, 0.1% Settling Time, 0.01% Total Harmonic Distortion and Noise Channel Separation AV = -1, 1V Step 18 s Note 1: Full power bandwidth is calculated from the slew rate FPBW = SR/ * VP-P www.3peakic.com Rev. A 3 TP2401 / TP2402 / TP2404 20MHz Bandwidth, Low Noise CMOS Opamps Typical Performance Characteristics VS = 2.5V, VCM = 0V, RL = Open, unless otherwise specified. Offset Voltage Production Distribution CMRR vs. Temperature 600 160 Number = 26300 pcs 140 500 CMRR(dB) Population 120 400 300 200 100 80 60 40 100 20 0 990 880 770 660 550 440 330 220 110 0 110 220 330 440 550 660 770 880 990 0 40 20 0 20 40 60 80 100 120 Temperature Offset Voltage(uV) Open-Loop Gain and Phase Input Voltage Noise Spectral Density 150 250 1000 200 150 100 0 50 100 0 150 Phase () Gain(dB) 50 50 Noise(nV/Hz) 100 100 10 200 50 250 300 100 0.1 10 1k 100k 10M 350 1000M 1 1 10 Frequency (Hz) 10k 100k 1M Input Bias Current vs. Input Common Mode Voltage 0.1 0.09 0.08 0.08 0.07 Input Bias Current(fA) Input Bias Current(pA) 1k Frequency(Hz) Input Bias Current vs. Temperature 0.06 0.05 0.04 0.03 0.02 0.01 0.06 0.04 0.02 0 0.02 0.04 0 0.01 0.06 40 20 0 20 40 60 Temperature() 4 100 Rev. A 80 100 2 2.5 3 3.5 4 4.5 5 Common Mode Voltage(V) www.3peakic.com TP2401/TP2402 / TP2404 20MHz Bandwidth, Low Noise CMOS Opamps Typical Performance Characteristics VS = 2.5V, VCM = 0V, RL = Open, unless otherwise specified. (Continued) CMRR vs. Frequency 140 140 120 120 100 100 CMRR(dB) CMRR(dB) Common Mode Rejection Ratio 80 60 80 60 40 40 20 20 0 0 0 1 2 3 4 5 1 100 Common-mode voltage(V) 10k Quiescent Current vs. Temperature Short Circuit Current vs. Temperature 5 120 ISINK 4.5 100 4 3.5 Ishort(mA) Supply Current(mA) 1M Frequency(Hz) 3 2.5 2 ISOURCE 80 60 40 1.5 1 20 0.5 0 0 40 20 0 20 40 60 80 100 120 40 0 20 40 60 80 100 120 Temperature() Power-Supply Rejection Ratio Quiescent Current vs. Supply Voltage 5 140 4.5 120 Supply Current(mA) PSRR+ 100 PSRR(dB) 20 Temperature() 80 60 PSRR- 40 20 0 4 3.5 3 2.5 2 1.5 1 0.5 0 20 1 100 10k Frequency(Hz) www.3peakic.com 1M 2 2.5 3 3.5 4 4.5 5 Supply Voltage(V) Rev. A 5 TP2401 / TP2402 / TP2404 20MHz Bandwidth, Low Noise CMOS Opamps Typical Performance Characteristics VS = 2.5V, VCM = 0V, RL = Open, unless otherwise specified. (Continued) CMRR vs. Temperature 160 160 140 140 120 120 100 100 CMRR(dB) PSRR(dB) Power-Supply Rejection Ratio vs. Temperature 80 60 80 60 40 40 20 20 0 0 40 20 0 20 40 60 80 100 120 40 20 0 Temperature 20 40 60 80 100 120 Temperature EMIRR IN+ vs. Frequency Large-Scale Step Response IN 2V/div 140 100 80 Gain= +1 RL= 10k 60 OUT 2V/div EMIRR IN+(dB) 120 40 20 0 1 10 100 1000 Frequency(MHz) Time (20s/div) 1V/div Gain= +10 V= 2.5V 2V/div Time (1s/div) 6 Positive Over-Voltage Recovery Gain= +10 V= 2.5V 2V/div 1V/div Negative Over-Voltage Recovery Rev. A Time (500ns/div) www.3peakic.com TP2401/TP2402 / TP2404 20MHz Bandwidth, Low Noise CMOS Opamps Typical Performance Characteristics VS = 2.5V, VCM = 0V, RL = Open, unless otherwise specified. (Continued) Negative Output Swing vs. Load Current Offset Voltage vs Common-Mode Voltage 6 1 T=-40 5 Offset Voltage(V) T=130 4 Vdrop(V) 0.5 T=25 3 2 0 0.5 1 1.5 2 1 2.5 0 3 0 0.05 0.1 0.15 0.2 I sink (A) 0 1 2 3 4 5 Common-mode Voltage(V) Positive Output Swing vs. Load Current 6 T=-40 5 T=25 T=130 Vdrop(V) 4 3 2 1 0 0 0.05 0.1 0.15 0.2 I source(A) www.3peakic.com Rev. A 7 TP2401 / TP2402 / TP2404 20MHz Bandwidth, Low Noise CMOS Opamps Pin Functions -IN: Inverting Input of the Amplifier. possible should be used between power supply pins or +IN: Non-Inverting Input of Amplifier. between supply pins and ground. OUT: Amplifier Output. The voltage range extends to V- or -Vs: Negative Power Supply. It is normally tied to within mV of each supply rail. ground. It can also be tied to a voltage other than V+ or +Vs: Positive Power Supply. Typically the voltage ground as long as the voltage between V+ and V- is from is from 2.2V to 5.5V. Split supplies are possible as long 2.2V to 5.5V. If it is not connected to ground, bypass it as the voltage between V+ and V- is between 2.2V and with a capacitor of 0.1F as close to the part as possible. 5.5V. A bypass capacitor of 0.1F as close to the part as Operation The TP2401 series op amps can operate on a single-supply voltage (2.2 V to 5.5 V), or a split-supply voltage (1.1 V to 2.75 V), making them highly versatile and easy to use. The power-supply pins should have local bypass ceramic capacitors (typically 0.001 F to 0.1 F). These amplifiers are fully specified from +2.2 V to +5.5 V and over the extended temperature range of -40C to +125C. Parameters that can exhibit variance with regard to operating voltage or temperature are presented in the Typical Characteristics Applications Information Input ESD Diode Protection The TP2401 incorporates internal electrostatic discharge (ESD) protection circuits on all pins. In the case of input and output pins, this protection primarily consists of current-steering diodes connected between the input and power-supply pins. These ESD protection diodes also provide in-circuit input overdrive protection, as long as the current is limited to 10 mA as stated in the Absolute Maximum Ratings table. Many input signals are inherently current-limited to less than 10 mA; therefore, a limiting resistor is not required. Figure 1 shows how a series input resistor (RS) may be added to the driven input to limit the input current. The added resistor contributes thermal noise at the amplifier input and the value should be kept to the minimum in noise-sensitive applications. Figure1. Input ESD Diode 8 Rev. A www.3peakic.com TP2401/TP2402 / TP2404 20MHz Bandwidth, Low Noise CMOS Opamps PHASE REVERSAL The TP2401 op amps are designed to be immune to phase reversal when the input pins exceed the supply voltages, therefore providing further in-system stability and predictability. Figure 2 shows the input voltage exceeding the supply voltage without any phase reversal. Figure 2. No Phase Reversal EMI SUSCEPTIBILITY AND INPUT FILTERING Operational amplifiers vary in susceptibility to electromagnetic interference (EMI). If conducted EMI enters the device, the dc offset observed at the amplifier output may shift from the nominal value while EMI is present. This shift is a result of signal rectification associated with the internal semiconductor junctions. While all operational amplifier pin functions can be affected by EMI, the input pins are likely to be the most susceptible. The TP2401 operational amplifier family incorporates an internal input low-pass filter that reduces the amplifier response to EMI. Both common-mode and differential mode filtering are provided by the input filter. The filter is designed for a cutoff frequency of approximately 400 MHz (-3 dB), with a roll-off of 20 dB per decade. 140 EMIRR IN+(dB) 120 100 80 60 40 20 0 1 10 100 1000 Frequency(MHz) Figure 3. TP2401 EMIRR IN+ vs Frequency www.3peakic.com Rev. A 9 TP2401 / TP2402 / TP2404 20MHz Bandwidth, Low Noise CMOS Opamps ACTIVE FILTER The TP2401 is well-suited for active filter applications that require a wide bandwidth, fast slew rate, low-noise, single-supply operational amplifier. Figure 4 shows a 20-kHz, second-order, low-pass filter using the multiplefeedback (MFB) topology. The components have been selected to provide a maximally-flat Butterworth response. Beyond the cutoff frequency, roll-off is -40 dB/dec. The Butterworth response is ideal for applications that require predictable gain characteristics, such as the anti-aliasing filter used in front of an ADC. One point to observe when considering the MFB filter is that the output is inverted, relative to the input. If this inversion is not required, or not desired, a noninverting output can be achieved through one of these options: 1. adding an inverting amplifier; 2. adding an additional second-order MFB stage R4 22k R1 R2 R3 2.7k 22k 10k C3 100pF VIN C1 3000pF 1/2 TP2402 VO C2 2000pF fp 20kHz Figure 4. TP2402 Configured as a Three-Pole, 20-kHz, Sallen-Key Filter PCB Surface Leakage In applications where low input bias current is critical, Printed Circuit Board (PCB) surface leakage effects need to be considered. Surface leakage is caused by humidity, dust or other contamination on the board. Under low humidity conditions, a typical resistance between nearby traces is 1012. A 5V difference would cause 5pA of current to flow, which is greater than the TP2401/2402/2404 OPA's input bias current at +27C (3pA, typical). It is recommended to use multi-layer PCB layout and route the OPA's -IN and +IN signal under the PCB surface. The effective way to reduce surface leakage is to use a guard ring around sensitive pins (or traces). The guard ring is biased at the same voltage as the sensitive pin. An example of this type of layout is shown in Figure 1 for Inverting Gain application. 1. For Non-Inverting Gain and Unity-Gain Buffer: a) Connect the non-inverting pin (VIN+) to the input with a wire that does not touch the PCB surface. b) Connect the guard ring to the inverting input pin (VIN-). This biases the guard ring to the Common Mode input voltage. 2. For Inverting Gain and Trans-impedance Gain Amplifiers (convert current to voltage, such as photo detectors): a) Connect the guard ring to the non-inverting input pin (VIN+). This biases the guard ring to the same reference voltage as the op-amp (e.g., VDD/2 or ground). b) Connect the inverting pin (VIN-) to the input with a wire that does not touch the PCB surface. Guard Ring VIN+ VIN- +VS Figure 5 The Layout of Guard Ring 10 Rev. A www.3peakic.com TP2401/TP2402 / TP2404 20MHz Bandwidth, Low Noise CMOS Opamps Power Supply Layout and Bypass The TP2401/2402/2402 OPA's power supply pin (VDD for single-supply) should have a local bypass capacitor (i.e., 0.01F to 0.1F) within 2mm for good high frequency performance. It can also use a bulk capacitor (i.e., 1F or larger) within 100mm to provide large, slow currents. This bulk capacitor can be shared with other analog parts. Ground layout improves performance by decreasing the amount of stray capacitance and noise at the OPA's inputs and outputs. To decrease stray capacitance, minimize PC board lengths and resistor leads, and place external components as close to the op amps' pins as possible. Proper Board Layout To ensure optimum performance at the PCB level, care must be taken in the design of the board layout. To avoid leakage currents, the surface of the board should be kept clean and free of moisture. Coating the surface creates a barrier to moisture accumulation and helps reduce parasitic resistance on the board. Keeping supply traces short and properly bypassing the power supplies minimizes power supply disturbances due to output current variation, such as when driving an ac signal into a heavy load. Bypass capacitors should be connected as closely as possible to the device supply pins. Stray capacitances are a concern at the outputs and the inputs of the amplifier. It is recommended that signal traces be kept at least 5mm from supply lines to minimize coupling. A variation in temperature across the PCB can cause a mismatch in the Seebeck voltages at solder joints and other points where dissimilar metals are in contact, resulting in thermal voltage errors. To minimize these thermocouple effects, orient resistors so heat sources warm both ends equally. Input signal paths should contain matching numbers and types of components, where possible to match the number and type of thermocouple junctions. For example, dummy components such as zero value resistors can be used to match real resistors in the opposite input path. Matching components should be located in close proximity and should be oriented in the same manner. Ensure leads are of equal length so that thermal conduction is in equilibrium. Keep heat sources on the PCB as far away from amplifier input circuitry as is practical. The use of a ground plane is highly recommended. A ground plane reduces EMI noise and also helps to maintain a constant temperature across the circuit board. R4 22k R1 R2 R3 2.7k 22k 10k VIN C1 3000pF C3 100pF 1/2 TP2401 VO C2 2000pF fp 20kHz Three-Pole Low-Pass Filter www.3peakic.com Rev. A 11 TP2401 / TP2402 / TP2404 20MHz Bandwidth, Low Noise CMOS Opamps Package Outline Dimensions SOT23-5 Symbol Dimensions Dimensions In Millimeters In Inches Min Max Min Max A1 0.000 0.100 0.000 0.004 A2 1.050 1.150 0.041 0.045 b 0.300 0.400 0.012 0.016 D 2.820 3.020 0.111 0.119 E 1.500 1.700 0.059 0.067 E1 2.650 2.950 0.104 0.116 e 12 Rev. A 0.950TYP 0.037TYP e1 1.800 2.000 0.071 0.079 L1 0.300 0.460 0.012 0.024 0 8 0 8 www.3peakic.com TP2401/TP2402 / TP2404 Package Outline Dimensions 20MHz Bandwidth, Low Noise CMOS Opamps SOT-23-8 Symbol www.3peakic.com Dimensions Dimensions In In Millimeters Inches Min Max Min Max A 1.050 1.250 0.041 0.049 A1 0.000 0.100 0.000 0.004 A2 1.050 1.150 0.041 0.045 b 0.300 0.500 0.012 0.020 c 0.100 0.200 0.004 0.008 D 2.820 3.020 0.111 0.119 E 1.500 1.700 0.059 0.067 e 0.65BSC 0.026(BSC) e1 0.975BSC 0.038(BSC) L 0.300 0.600 0.012 0.024 0 8 0 8 Rev. A 13 TP2401 / TP2402 / TP2404 20MHz Bandwidth, Low Noise CMOS Opamps Package Outline Dimensions SO-8 (SOIC-8) A2 C L1 A1 e E D Symbol E1 b 14 Rev. A Dimensions Dimensions In In Millimeters Inches Min Max Min Max A1 0.100 0.250 0.004 0.010 A2 1.350 1.550 0.053 0.061 b 0.330 0.510 0.013 0.020 C 0.190 0.250 0.007 0.010 D 4.780 5.000 0.188 0.197 E 3.800 4.000 0.150 0.157 E1 5.800 6.300 0.228 0.248 e 1.270 TYP 0.050 TYP L1 0.400 1.270 0.016 0.050 0 8 0 8 www.3peakic.com TP2401/TP2402 / TP2404 Package Outline Dimensions 20MHz Bandwidth, Low Noise CMOS Opamps MSOP-8 Dimensions Dimensions In In Millimeters Inches Min Max Min Max A 0.800 1.200 0.031 0.047 A1 0.000 0.200 0.000 0.008 A2 0.760 0.970 0.030 0.038 b 0.30 TYP 0.012 TYP C 0.15 TYP 0.006 TYP D 2.900 e 0.65 TYP E 2.900 3.100 0.114 0.122 E1 4.700 5.100 0.185 0.201 L1 0.410 0.650 0.016 0.026 0 6 0 6 Symbol E E1 e b D 3.100 0.114 0.122 0.026 A1 R1 R L1 www.3peakic.com L L2 Rev. A 15 TP2401 / TP2402 / TP2404 20MHz Bandwidth, Low Noise CMOS Opamps Package Outline Dimensions TSSOP-14 Dimensions E1 E A A2 e c D Symbol In Millimeters MIN TYP MAX A - - 1.20 A1 0.05 - 0.15 A2 0.90 1.00 1.05 b 0.20 - 0.28 c 0.10 - 0.19 D 4.86 4.96 5.06 E 6.20 6.40 6.60 E1 4.30 4.40 4.50 e L A1 R1 R 0.65 BSC 0.45 0.60 L1 1.00 REF L2 0.25 BSC 0.75 R 0.09 - - 0 - 8 L1 16 Rev. A L L2 www.3peakic.com TP2401/TP2402 / TP2404 Package Outline Dimensions 20MHz Bandwidth, Low Noise CMOS Opamps SO-14 (SOIC-14) Dimensions In Millimeters Symbol MIN TYP MAX A 1.35 1.60 1.75 A1 0.10 0.15 0.25 A2 1.25 1.45 1.65 b 0.36 D 8.53 8.63 8.73 E 5.80 6.00 6.20 E1 3.80 3.90 4.00 e L 1.27 BSC 0.45 0.60 0.80 L1 1.04 REF L2 0.25 BSC www.3peakic.com 0.49 0 8 Rev. A 17