19-4788; Rev 0; 10/98 General Description The MAX7401/MAX7405 8th-order, lowpass, Bessel, switched-capacitor filters (SCFs) operate from a single +5V (MAX7401) or +3V (MAX7405) supply. These devices draw only 2mA of supply current and allow cor- ner frequencies from 1Hz to 5kHz, making them ideal for low-power post-DAC filtering and anti-aliasing appli- cations. They feature a shutdown mode, which reduces the supply current to 0.2uA. Two clocking options are available on these devices: self-clocking (through the use of an external capacitor) or external clocking for tighter corner-frequency control. An offset adjust pin allows for adjustment of the DC out- put level. The MAX7401/MAX7405 Bessel filters provide low over- shoot and fast settling. Their fixed response simplifies the design task to selecting a clock frequency. MIAAILM 8th-Order, Lowpass, Bessel, Switched-Capacitor Filters Features +t hU HmhCU OH 8th-Order, Lowpass Bessel Filters Low Noise and Distortion: -82dB THD + Noise Clock-Tunable Corner Frequency (1Hz to 5kHz) 100:1 Clock-to- Corner Ratio Single-Supply Operation +5V (MAX7401) +3V (MAX7405) Low Power 2mA (Operating Mode) 0.2uA (Shutdown Mode) Available in 8-Pin SO/DIP Packages Low Output Offset: +5mV Applications Ordering Information ADC Anti-Aliasing CT2 Base Stations PART TEMP. RANGE PIN-PACKAGE Post-DAC Filtering Speech Processing MAX7401CSA OPC to +70C 8 SO : . MAX7401CPA 0C to +70C 8 Plastic DIP Air-Bag Electronics MAX7401ESA -40C to +85C 8 SO MAX7401EPA -40C to +85C 8 Plastic DIP . . . MAX7405CSA* 0C to +70C 8 SO Pin Configuration Co gu atlo MAX7405CPA* 0C to +70C 8 Plastic DIP TCPVIAV MAX7405ESA -40C to +85C 8 SO MAX7405EPA* -40C to +85C 8 Plastic DIP WwW * Future productcontact factory for availability. e com | 1 8| CLK IN[2| AA AXLAA 7] SN Typical Operating Circuit MAX/401 ao[s] Mx [elo Von [4] 5| cur Veurye SO/DIP aia = io SHIN NUT N maxima re MAX7401 MAX7405 aon { ck OOM TL aD oS 7 O.1LF 1 = MAXLV Maxim Integrated Products 1 For free samples & the latest literature: http://)www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. SOVLXVW/LOVZLXVINMAX7401/MAX7405 8th-Order, Lowpass, Bessel, Switched-Capacitor Filters ABSOLUTE MAXIMUM RATINGS Vpp to GND MAX7401 o.oo. cece ee cccceceeeceecseessssnesaeeaeceeceeseueeeesesseesess -0.3V to +6V MAX74OD 0... ccccccceceecceecseessssessaceaeceeseeseuseeeseeseesess -0.3V to +4V IN, OUT, COM, OS, CLK occ nee -0.3V to (Vpp + 0.3V) we -0.3V to +6V Continuous Power Dissipation (Ta = +70C) 8-Pin SO (derate 5.88mMW/C above +70C)..... eee 471mW 8-Pin DIP (derate 9.09mMW/C above +70C)...... ee 727mW Operating Temperature Ranges MAX740 _C_A woolen eneeeenseneeanes 0C to +70C MAX740 EA ose e ence eennee ener neeeeee -40C to +85C Storage Temperature Range ....... sees eeee -65C to +160C Lead Temperature (soldering, 10SC) ...... cece +300C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICSMAX7401 (VoD = +5V, filter output measured at OUT, 10kQ || 50pF load to GND at OUT, OS = COM, 0.1pF from COM to GND, SHDN = Vpp, folk = 100kHz, Ta = TMIN to TMAX, unless otherwise noted. Typical values are at Ta = +25C.) PARAMETER | SYMBOL | CONDITIONS | MIN TYP MAX | UNITS FILTER CHARACTERISTICS Corner Frequency fc (Note 1) 0.001 to 5 kHz Clock-to-Corner Ratio foLk /fc 10071 Clock-to-Corner Tempco 10 ppm/C Output Voltage Range 0.25 Vop - 0.25 Vv Output Offset Voltage VoFFSET | VIN= Vcom= Vpp/2 +5 +25 mV Output Otfect Femove , Voom = Vpp/2 (Note 2) O1 0145 03 | dB PUS NOSE | THO*N | rpoacurement bandwith = 2kbHz #2 a8 OS Voltage Gain to OUT Aos 1 V/V Input Voltage Range at OS Vos Vcom +0.1 Vv Input COM externally driven vooie Yop /2 voor? COM Voltage Range VCOM Vv Output COM internally biased von! Vop/2 voo le Input Resistance at COM Rcom 75 125 kQ Clock Feedthrough 10 mVp-p Resistive Output Load Drive RL 10 1 kQ saan Capacitive Load at CL 50 500 pF Input Leakage Current at COM SHDN = GND, Vcom = 0 to Vpp A pA Input Leakage Current at OS Vos = 0 to Vpp - 1V (Note 3) +0.1 + pA CLOCK Internal Oscillator Frequency fosc Cosc = 1000pF (Note 4) 29 38 48 kHz Clock Input Current IcLK VcLk = Oor 5V #15 +30 HA Clock Input High VIH Vpp - 0.5 Vv Clock Input Low VIL 0.5 Vv 2 MAXUM8th-Order, Lowpass, Bessel, Switched-Capacitor Filters ELECTRICAL CHARACTERISTICSMAX7401 (continued) (VoD = +5V, filter output measured at OUT, 10kQ || 50pF load to GND at OUT, OS = COM, 0.1pF from COM to GND, SHDN = Vpp, folk = 100kHz, Ta = TMIN to TMAX, unless otherwise noted. Typical values are at Ta = +25C.) PARAMETER | SYMBOL | CONDITIONS | MIN TYP MAX | UNITS POWER REQUIREMENTS Supply Voltage Vpb 45 5.5 Vv Supply Current IDD Operating mode, no load, IN= OS = COM 2 3.5 mA Shutdown Current lsapn | SHDN = GND, CLK driven from 0 to Vpp 0.2 1 pA Power-Supply Rejection Ratio PSRR Measured at DC 60 dB SHUTDOWN SHDN Input High VsDH Vop - 0.5 V SHDN Input Low VSDL 0.5 V SHDN Input Leakage Current VSHDN = 0 to Vop +0.4 +10 pA ELECTRICAL CHARACTERISTICSMAX7405* (VoD = +8V, filter output measured at OUT, 10kQ || 50pF load to GND at OUT, OS = COM, 0.1pF from COM to GND, SHDN = Vop, foLk = 100kHz, Ta = TMIN to TMAX, unless otherwise noted. Typical values are at Ta = +25C.) PARAMETER | SYMBOL | CONDITIONS | MIN TYP MAX | UNITS FILTER CHARACTERISTICS Corner Frequency fc (Note 1) 0.001 to 5 kHz Clock-to-Corner Ratio foLkifc 100:1 Clock-to-Corner Tempco 10 ppm/C Output Voltage Range 0.25 Vop - 0.25 Vv Output Offset Voltage VoFFsET | VIN= Voom = Vop/2 +5 +25 mV DC Insertion Gain with Output Offset Removed Vcom = Vpp/ 2 (Note 2) -0.1 0.15 0.3 dB Total Harmonic Distortion fin = 200HZ, VIN = 2.5Vp-p, 7 plus Noise THD+N measurement bandwidth = 22kHz 83 dB OS Voltage Gain to OUT Aos 1 V/V Input Voltage Range at OS Vos Vcom +0.1 Vv COM Voltage Range Vcom COM internally biased or externally driven Yoo 2 Yop /2 Yoo ie Vv Input Resistance at COM RcomM 75 125 kQ Clock Feedthrough 10 mVp-p Resistance Output Load Drive RL 10 1 kQ Maximum Capacitive Load at OUT CL 50 500 pF Input Leakage Current at COM SHDN = GND, Vcom = 0 to Vpp +0.1 +10 pA Input Leakage Current at OS Vos = 0 to (Vpp - 1V) (Note 3) +0.1 +10 HA Future product. Specifications are preliminary. MAXIM 3 SOVLXVW/LOVZLXVINMAX7401/MAX7405 8th-Order, Lowpass, Bessel, Switched-Capacitor Filters ELECTRICAL CHARACTERISTICSMAX7405* (continued) (Vop = +5V, filter output measured at OUT, 10kQ || 50pF load to GND at OUT, OS = COM, 0.1pF from COM to GND, SHDN = Vpp, fcLk = 100kHz, Ta = TMIN to TMAX, unless otherwise noted. Typical values are at Ta = +25C.) PARAMETER | SYMBOL | CONDITIONS | MIN TYP MAX | UNITS CLOCK Internal Oscillator Frequency fosc Cosc = 1000pF (Note 4) 29 38 48 kHz Clock Input Current IcLK VcLk = O or 3V #15 +30 HA Clock Input High VIH Vpp - 0.5 Vv Clock Input Low VIL 0.5 Vv POWER REQUIREMENTS Supply Voltage Vpb 2.7 3.6 Vv Supply Current IDD Operating mode, no load, IN = OS = COM 2 3.5 mA Shutdown Current ISHDN | SHDN = GND, CLK driven from 0 to Vpp 0.2 1 pA Power-Supply Rejection Ratio PSRR Measured at DC 60 dB SHUTDOWN SHDN Input High VspH Vop - 0.5 V SHDN Input Low VspL 0.5 V SHDN Input Leakage Current VSHDN= 0 to Vpp +0.1 +10 pA Future product. Specifications are preliminary. FILTER CHARACTERISTICSMAX7401 (VoD = +5V, filter output measured at OUT, 10kQ || 50pF load to GND at OUT, SHDN = Vopp, Vcom = Vos = Vpp/2, feLk = 100kHz, Ta = TMIN to TMAX, unless otherwise noted. Typical values are at Ta = +25C.) PARAMETER CONDITIONS MIN TYP MAX UNITS fin = 0.5f -1.0 -0.8 -0.6 Insertion Gain Relative to fIN = fc 3.3 -3.0 -2.7 : dB DC Gain fin = 3fc -33 -29 fin = 6fc -79 -74 Note 1: The maximum fc is defined as the clock frequency fc_k = 100 fc at which the peak SINAD drops to 68dB with a sinusoidal input at 0.2fc. Note 2: DC insertion gain is defined as AVoUT/ AVIN. Note 3: OS voltages above Vpp - 1V saturate the input and result in a 75p/A typical input leakage current. Note 4: fosc (KHz) = 38: 103/ Cosc (pF). MAXIMA8th-Order, Lowpass, Bessel, Switched-Capacitor Filters Typical Operating Characteristics (Vop = +5V for MAX7401, Vop = +3V for MAX7405; foLk = 100kHz; SHDN = Vpn; Vcom = Vos = Vop / 2; Ta = +25C; unless otherwise noted.) (Data for MAX7405 is preliminary.) FIRECUENCY RESPONSE PASSBAND FREGUENCY RESPONSE PHASE RESPONSE fo= kHz fo= 1kHz i fo= 1kHz i g S Zz Zz. Xt - & a 0 05 10 15 20 25 30 35 40 45 50 0 202 404 608 808 4010 0 400 x00 14200 1800 2000 INPUT FREQUENCY (kH4 SUPPLY CURRENT vs. SUPPLY VOLTAGE SUPPLY CURRENT (mA) INPUT FREQUENCY (Ha SUPPLY CURRENT vs, TEMPERATURE NOLOAD MAX7401 too05: SUPPLY CURFENT (mA) INPUT FREQUENCY (He) CFPSET VOLTAGE vs, SUPPLY VOLTAGE Vin=Voom= 2 MAX7401 toc OFFRET VOLTAGE(n) nO 25 30 35 40 45 50 55 40 2 0 0 4 10 25 30 85 40 45 50 55 SUPPLY VCLTAGE(V) TEMPERATURE (C) SUPPLY VOLTAGE() INTERNAL OSC] LLATOR FREGUENCY NORMALIZED OSCILLATOR FREQUENCY CFPSET VOLTAGE vs. TEVIPERATURE vs. Cogc CAPACITANCE 1.0 I 7 | N= Voow=Vpp/ 2 MAX7401 tocd7- MAX?401 toot 4 4 20 0 0) 0 wo TEMPERATURE?) MAXIMA 100 , 0.01 0.1 1 10 100 1000 Cogc CAPACITANCE (nF) vs, SUPPLY VOLTAGE =200pF 115 Cosc=380p MAX7401 toot 1.10 & 8 NORMALIZED OSCILLATOR FREQUENCY BR aR 25 30 35 40 45 50 55 SUPPLY VCLTAGE(V) SOVLXVW/LOVZLXVINMAX7401/MAX7405 8th-Order, Lowpass, Bessel, Switched-Capacitor Filters Typical Operating Characteristics (continued) (Vop = +5V for MAX7401, Vop = +3V for MAX7405; foLk = 100kHz; SHDN = Vpn; Vcom = Vos = Vop / 2; Ta = +25C; unless otherwise noted.) (Data for MAX7405 is preliminary.) MAX7401 NORMALIZED O80 LLATOR FREQUENCY THD+ NOSE vs. vs. TEMPERATURE INPUT SIGNAL AMPLITUDE 1.04 0 ~ 3 1.03 Cage = 390pF 0 noLanp _|? q . (SEETABLEA) 5 E 4.02 20 6 1.01 G -0 3 4.00 g 40 + -5O agg a K Ew 098 -70 0.97 0 0.96 20 oa 0 0 BO 8 100 0 05 1.0 15 20 25 30 35 40 45 50 TEMPERATUFECG) AVPLITUDE(o-p MAX7401 : THD + NOSE vs. INPUTSGAL Table A. THD+N vs. Input Signal ANIPLITUDE vs. RESISTIVE LOAD Amplitude Test Conditions 0 a FIN= 20H 3 fin fo | fork | MEASUREMENT -10 fo= kHz g TRACE oe | MEASFEMENT EW co. : (Hz) | (kHz) | (kHz) | BANDWIDTH (kHz) A 1000 5 500 80 e B 200 1 100 22 -40 g + 8 F -60 70 -8 -% 0 O05 1.0 15 20 25 30 35 40 45 50 AMPLITUDE (Vp-p) 6 MAXIMA8th-Order, Lowpass, Bessel, Switched-Capacitor Filters Pin Description PIN NAME FUNCTION { COM Common Input Pin. Biased internally at mid-supply. Bypass externally to GND with a 0.1pF capacitor. To override internal biasing, drive with an external supply. 2 IN Filter Input 3 GND Ground 4 Vpb Positive Supply Input: +5V for MAX7401, +3V for MAX7405 5 OUT Filter Output 6 Os Offset Adjust Input. To adjust output offset, bias OS externally. Connect OS to COM if no offset adjustment is needed. Refer to Offset and Common-Mode Input Adjustment section. 7 SHDN Shutdown Input. Drive low to enable shutdown mode; drive high or connect to Vpp for normal operation. 8 CLK Clock Input. To override the internal oscillator, connect to an external clock; otherwise, connect an external capacitor (Cosc) from CLK to GND to set the internal oscillator frequency. Detailed Description The MAX7401/MAX7405 Bessel filters provide low over- shoot and fast settling responses. Both parts operate with a 100:1 clock-to-corner frequency ratio and a 5kHz maximum corner frequency. Lowpass Bessel filters such as the MAX7401/MAX7405 delay all frequency components equally, preserving the shape of step inputs (subject to the attenuation of the higher frequencies). Bessel filters settle quicklyan important characteristic in applications that use a multi- plexer (mux) to select an input signal for an analog-to- digital converter (ADC). An anti-aliasing filter placed between the mux and the ADC must settle quickly after a new channel is selected. Figure 1 shows the difference between Bessel and Butterworth filters when a 1kHz square wave is applied to the filter input. With the filter cutoff frequencies set at 5kHz, trace B shows the Bessel filter response and trace C shows the Butterworth filter response. Background Information Most switched-capacitor filters (SCFs) are designed with biquadratic sections. Each section implements two filter- ing poles, and the sections are cascaded to produce higher order filters. The advantage to this approach is ease of design. However, this type of design is highly sensitive to component variations if any section's Q is high. An alternative approach is to emulate a passive net- work using switched-capacitor integrators with summing and scaling. Figure 2 shows a basic 8th-order ladder filter structure. MAXUM | Aidiv c / 2 Midiv 200us/div A 1kH2ZINPUT SIGNAL Bi BESSEL ALTER RESPONSE fo = 5krz C, BUTTERACRTH ALTER FESPCNSE fc = 5KHZ, Figure 1. Bessel vs. Butterworth Filter Response Figure 2. 8th-Order Ladder Filter Network SOVLXVW/LOVZLXVINMAX7401/MAX7405 8th-Order, Lowpass, Bessel, Switched-Capacitor Filters A switched-capacitor filter such as the MAX7401/ MAX7405 emulates a passive ladder filter. The filter's component sensitivity is low when compared to a cas- caded biquad design, because each component affects the entire filter shape, not just one pole-zero pair. In other words, a mismatched component in a biquad design will have a concentrated error on its respective poles, while the same mismatch in a ladder filter design results in an error distributed over all poles. Clock Signal External Clock The MAX7401/MAX7405 family of SCFs is designed for use with external clocks that have a 40% to 60% duty cycle. When using an external clock with these devices, drive CLK with a CMOS gate powered from 0 to Vpp. Varying the rate of the external clock adjusts the corner frequency of the filter as follows: fc = feLk/ 100 Internal Clock When using the internal oscillator, connect a capacitor (Cosc) between CLK and ground. The value of the capacitor determines the oscillator frequency as follows: 38-102 Cosc ; Coge in pF Minimize the stray capacitance at CLK so that it does not affect the internal oscillator frequency. Vary the rate of the internal oscillator to adjust the filter's corner frequen- cy by a 100:1 clock-to-corner frequency ratio. For exam- ple, an internal oscillator frequency of 100kHz produces a nominal corner frequency of 1kKHz. Input Impedance vs. Clock Frequencies The MAX7401/MAX7405s input impedance is effectively that of a switched-capacitor resistor, and is inversely proportional to frequency. The input impedance values determined below represent the average input imped- ance, since the input current is not continuous. As a rule, use a driver with an output impedance less than 10% of the filters input impedance. Estimate the input imped- ance of the filter using the following formula: 1 (fou , Cin) where fcLk = clock frequency and CIN = 3.37pF. Zn Low-Power Shutdown Mode These devices feature a shutdown mode that is activat- ed by driving SHDN low. In shutdown mode, the filters supply current reduces to 0.2uA (typ) and its output becomes high impedance. For normal operation, drive SHDN high or connect to Vpp. Applications Information Offset and Common-Mode Input Adjustment The voltage at COM sets the common-mode input volt- age and is biased at mid-supply with an internal resistor- divider. Bypass COM with a 0.1pF capacitor and connect OS to COM. For applications requiring offset adjustment or DC level shifting, apply an external bias voltage through a resistor-divider network to OS, as shown in Figure 3. (Note: Do not leave OS unconnect- ed.) The output voltage is represented by this equation: VouT = (VIN - Vcom) + Vos with Vcom = Vpp / 2 (typical), and where (Vin - Vcom) is lowpass filtered by the SCF, and Vos is added at the output stage. See the Electrical Characteristics for the voltage range of COM and OS. Changing the voltage on COM or OS significantly from mid-supply reduces the fil- ter's dynamic range. Power Supplies The MAX7401 operates from a single +5V supply and the MAX7405 operates from a single +3V supply. Bypass Vpp to GND with a 0.1uF capacitor. If dual sup- plies are required (+2.5V for MAX7401, +1.5V for MAX7405), connect COM to system ground and connect GND to the negative supply. Figure 4 shows an example of dual-supply operation. Single- and dual-supply perfor- mance are equivalent. For either single- or dual-supply VSUPPLY t O.AWF L oo SAN - OUT - CuTPUT INPUT T IN CCM MAXIMA Fosrl_ 50k MAX7401 MAX7405 + clack } ak Cs 50k O.1F GND Sok Figure 3. Offset Adjustment Circuit MAXIMA8th-Order, Lowpass, Bessel, Switched-Capacitor Filters Table 1. Typical Harmonic Distortion Figure 4. Dual-Supply Operation operation, drive CLK and SHDN from GND (V- in dual- supply operation) to Vpp. For +5V dual-supply applica- tions, use the MAX291-MAX297. Input Signal Amplitude Range The optimal input signal range is determined by observ- ing the voltage level at which the total harmonic distor- tion plus noise (THD+N) is minimized for a given corner frequency. The Typical Operating Characteristics show graphs of the devices THD+N response as the input signal's peak-to-peak amplitude is varied. These mea- surements are made with OS and COM biased at mid- supply. Anti-Aliasing and Post-DAC Filtering When using the MAX7401/MAX7405 for anti-aliasing or post-DAC filtering, synchronize the DAC and the filter clocks. If the clocks are not synchronized, beat frequen- cies may alias into the passband. FILTER foLK fc fiN VIN TYPICAL HARMONIC DISTORTION (dB) (kHz) (KHz) (Hz) (Vp-p) 2nd 3rd 4th 5th 100 1 200 -91 -83 -90 -93 MAX7401 4 500 5 1000 -89 -79 -92 -92 The high clock-to-corner frequency ratio (100:1) also eases the requirements of pre- and post-SCF filtering. At V+ the input, a lowpass filter prevents the aliasing of fre- e quencies around the clock frequency into the passband. | At the output, a lowpass filter attenuates the clock Vo gant feedthrough. our anpur A high clock-to-corner frequency ratio allows a simple INPUT f IN oml-e_e RC lowpass filter, with the cutoff frequency set above the L SCF corner frequency, to provide input anti-aliasing and MAXIM = reasonable output clock attenuation. MAX7401 7 D1 sax We, Harmonic Distortion vrs Our Our Harmonic distortion arises from nonlinearities within the __ filter. These nonlinearities generate harmonics when a GND | pure sine wave is applied to the filter inout. Table 1 lists the MAX7401s typical harmonic-distortion values with a 10kQ load at Ta = +25C. Ve *DAVESHON TOV- FCRLOW POWERSHUTDOAN MODE Chip Information TRANSISTOR COUNT: 1116 MAXUM SOVLXVW/LOVZLXVINMAX7401/MAX7405 8th-Order, Lowpass, Bessel, Switched-Capacitor Filters Package Information = 7 Ha HE i | ies | 9-g See +X 0.010 |0.020 | 0.e5/0.50 . LEADS TO BE COPLANAR WITHIN 0.016 [0.050 | 0.40}1.27 INCHES [MILLIMETERS INCHES [MILLIMETERS MIN [MAX [MIN [ MAX MIN [MAX [MIN | MAX [N |MSOlel 4[0.053/0.069| 135/175 D[0.189 [0.197 | 4.805.008 | A Ai[0.004 [0.010 [0.10 [025] [D/0.337/0.344/ 8.5518.75|14| B Bl0.014 [0.019 | 0.35/0.49| [Dl0.386[0.394] 9.80/10.00/16[ C C [0.007 [0.010 | 0.19 [0.25 e 0.050 127 NOTES: E 0.150 0.157 3.80 4,00 1. D&E DO NOT INCLUDE MOLD FLASH H[0.228/0.244] 5.80|6.20 eT EXCEED Sm cous SN A L 102mm .004*> 3 4. CONTROLLING DIMENSION: MILLIMETER 5. MEETS JEDEC MS012-xx AS SHOWN 6 IN ABOVE TABLE N = NUMBER OF PINS SMAI ZVI [PACKAGE FANILY OUTLINE: SOIC 150") \y[ei-004i A 10 MAXIMA8th-Order, Lowpass, Bessel, Switched-Capacitor Filters Package Information (continued) PDIP EPS E D { h= El 4 LJ ~wiiL- or-15 ff Lat eA eB~ INCHES [MILLIMETERS MAX | MI MAX MIN | MAX | MIN | MAX [N [Msoo! 0.200 | --- [5.08 0.348 |0.390 | 8.84] 9.91 |8 [AB === -=-- 0.735 10,765 |18.67 [19.43 |14 |AC 0.745 10.765 {18.92 [19.43 |16 [AA 0.885 |0.915 |22.48|23.24|18 |AD 1015 [1.045 [25,78/26.54|20 |AE 114 (1.265 |28,96/32.13 |24|AF 1.360 11.380 |34,.54/35.05 |28]*5 210.125 |0175 (318 [4.45 310.055 |0.080 [1.40 [2.03 1/0,045 |0.065 |1.14 OWOSSO |y|o C 0.008 [0.012 |0.20 NOTES: 1, D&E DO NOT INCLUDE MOLD FLASH 2. MOLD FLASH OR PROTRUSIONS NOT TO EXCEED 15mm .0067> 3. CONTROLLING DIMENSION: MILLIMETER 4. MEETS JEDEC MS001-xx AS SHOWN IN ABOVE TABLE 5. SIMILIAR TO JEDEC MO-058AB 6. N = NUMBER OF PINS MAXI [PACKAGE FAMILY OUTLINE: PDIP a0 (14) 21-0043 A MAXUM " SOVLXVW/LOVZLXVINMAX7401/MAX7405 8th-Order, Lowpass, Bessel, Switched-Capacitor Filters NOTES Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 1998 Maxim Integrated Products Printed USA MAXIM is a registered trademark of Maxim Integrated Products.