LT1464/LT1465 Dual/Quad Micropower, 1MHz C-Load Picoampere Bias Current JFET Input Op Amps U FEATURES ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ DESCRIPTION The LT ®1464 (dual) and LT1465 (quad) are the first micropower op amps (200µA max per amp) to offer picoampere input bias currents (500fA typ) and unity-gain stability for capacitive loads up to 10nF. The output can swing a 10k load to within 1.5V of either supply, just like op amps that require an order of magnitude more supply current. This unique combination of performance makes the LT1464/LT1465 ideal over a wide range of input and output impedances. Input Bias Current: 2pA Max (LT1464A) 20pA Max (LT1464, LT1465) Supply Current per Amplifier: 200µA Max Gain Bandwidth Product: 1MHz Typ Slew Rate: 0.9V/µs Typ Input Common Mode Range Includes Positive Rail Unity-Gain Stable for C-LoadTM Up to 10nF Open-Loop Gain: 1 Million Typ Guaranteed Specs with ±5V, ±15V Supplies Guaranteed Matching Specifications Standard Pinout: SO-8, SO-14 Package In the design and testing of the LT1464/LT1465, particular emphasis has been placed on optimizing performance in the low cost SO-8 (dual) and 14-lead SO (quad) package for ±15V and ±5V supplies. The input common mode range includes the positive rail. Slew rate (0.5V/µs min) and gain bandwidth product (650kHz min) are 100% tested. A full set of matching specifications is also provided. U APPLICATIONS ■ ■ ■ ■ Battery-Powered Systems Photocurrent Amplifiers Low Frequency, Micropower Active Filters Low Droop Track-and-Hold Circuits , LTC and LT are registered trademarks of Linear Technology Corporation. C-Load is a trademark of Linear Technology Corporation. U TYPICAL APPLICATION Micropower Low Droop Track-and-Hold/Peak Detector V+ A 1/4 LTC201 13 15 4 14 1 MCT2 5 V+ V– 5 2 + 1/2 LT1464 6 IN 1/4 LTC201 B 7 6 4 – 8 1/2 LT1464 – 1 MCT2 5 3 + 2 6 4 3 MODE Track Reset Reset IN A IN B 0 0 0 0 0 0 1 VOUT 4 V– 2 FUNCTION Track-and-Hold Positive Peak Detector Negative Peak Detector 2 R1* 1 5 Small-Signal Response, CLOAD = 10nF C1 10nF POLYSTYRENE 16 LT1464 • TA01 0.5pA = 0.05mV/s 10nF TOTAL SUPPLY CURRENT = 460 µA MAX * R1 = 600 Ω FOR ±15V SUPPLIES R1 = 0 Ω FOR ±5V SUPPLIES TYPICAL DROOP = AV = 1 VS = ±5V, ±15V CL = 10nF 1464 • TA02 MODE IN A IN B Hold 1 1 Store 0 1 Store 1 0 LTC201 switch is open for logic "1". 1 LT1464/LT1465 W W U W ABSOLUTE MAXIMUM RATINGS Supply Voltage ..................................................... ±20V Differential Input Voltage ...................................... ±40V Input Current ....................................................... 20mA Output Short-Circuit Duration ......................... Indefinite Operating Temperature Range ............... – 40°C to 85°C Specified Temperature Range ................ – 40°C to 85°C Maximum Junction Temperature ......................... 150°C Storage Temperature Range ................ – 65°C to 150°C Lead Temperature (Soldering, 10 sec)................. 300°C W U U PACKAGE/ORDER INFORMATION ORDER PART NUMBER TOP VIEW OUT A 1 –IN A 2 8 7 A +IN B 3 V– B 4 N8 PACKAGE 8-LEAD PDIP 6 5 V+ OUT B –IN B +IN B S8 PACKAGE 8-LEAD PLASTIC SO LT1464ACN8 LT1464ACS8 LT1464CN8 LT1464CS8 S8 PART MARKING TJMAX = 150°C, θJA = 130°C/ W (N) TJMAX = 150°C, θJA = 190°C/ W (S) 14 OUT D OUT A 1 –IN A 2 +IN A 3 V+ A D 4 +IN B 5 13 –IN D LT1465CN LT1465CS 12 +IN D 11 V – B C 10 +IN C –IN B 6 9 –IN C OUT B 7 8 OUT C N PACKAGE 14-LEAD PDIP 1464A 1464 ORDER PART NUMBER TOP VIEW S PACKAGE 14-LEAD PLASTIC SO TJMAX = 150°C, θJA = 110°C/ W (N) TJMAX = 150°C, θJA = 150°C/ W (S) Consult factory for Industrial and Military grade parts. ELECTRICAL CHARACTERISTICS VS = ±15V, VCM = 0V, TA = 25°C, unless otherwise noted. MIN LT1464AC TYP MAX LT1464C/LT1465C MIN TYP MAX SYMBOL PARAMETER CONDITIONS (Note 1) VOS Input Offset Voltage VS = ±5V VS = ±15V 0.4 0.6 0.8 2.0 0.4 0.6 0.8 2.0 UNITS mV mV IOS Input Offset Current VS = ±5V VS = ±15V 0.2 0.5 1.2 2.0 0.5 15 pA pA VS = ±5V VS = ±15V ±0.4 ±0.5 ±2.0 ±3.0 ± 0.5 ±20 pA pA IB Input Bias Current en Input Noise Voltage 0.1Hz to 10Hz 2 2 µVP-P Input Noise Voltage Density fO = 10Hz fO = 1000Hz 33 24 33 24 nV/√Hz nV/√Hz Input Noise Current Density fO = 10Hz, 1kHz (Note 3) 0.4 0.4 fA/√Hz CMRR Common Mode Rejection Ratio VCM = – 12.5V to 15V 76 85 74 85 dB PSRR Power Supply Rejection Ratio VS = ±2.5V to ±20V 81 90 78 90 dB 1012 1012 1012 011 1012 1011 Ω Ω Ω 3 3 pF RIN Input Resistance—Differential Common Mode Common Mode CIN Input Capacitance AVOL Large-Signal Voltage Gain 2 VCM = – 12.5V to 8V VCM = 8V to 15V VO = ±10V, RL = 10k VO = ±10V, RL = 2k 350 150 1000 450 300 150 900 450 V/mV V/mV VS = ±5V, VO = ±2V, RL = 10k VS = ±5V, VO = ±1V, RL = 2k 100 50 250 170 100 50 250 170 V/mV V/mV LT1464/LT1465 ELECTRICAL CHARACTERISTICS VS = ±15V, VCM = 0V, TA = 25°C, unless otherwise noted. MIN LT1464AC TYP MAX LT1464C/LT1465C MIN TYP MAX SYMBOL PARAMETER CONDITIONS (Note 1) VOUT Output Voltage Swing RL = 10k RL = 2k VS = ±5V, RL = 2k ±13.5 ±13.3 ±3.5 ±13.7 ±13.5 ±3.7 ±13.5 ±13.3 ±3.5 ±13.7 ±13.5 ±3.7 SR Slew Rate RL = 10k (Note 4) 0.5 0.9 0.5 0.9 V/µs GBW Gain Bandwidth Product f = 10kHz 650 1000 650 1000 kHz IS Supply Current per Amplifier 200 200 145 135 UNITS V V V 200 200 µA µA VS = ±5V 145 135 Channel Separation f = 10Hz, VO = ±10V, RL = 10k 132 VOS Offset Voltage Match (Note 7) VS = ±5V VS = ±15V 0.5 0.8 1.3 3.3 0.5 0.8 1.3 3.3 mV mV ∆IB+ Noninverting Bias Current Match (Note 7) VS = ±5V VS = ±15V 0.4 0.5 3.0 4.0 0.5 30 pA pA ∆CMRR Common Mode Rejection Match (Notes 5, 7) 74 85 71 85 dB ∆PSRR Power Supply Rejection Match (Notes 5, 7) 78 88 74 88 dB 132 dB VS = ±15V, VCM = 0V, 0°C ≤ TA ≤ 70°C, unless otherwise noted. SYMBOL PARAMETER CONDITIONS (Note 1) MIN LT1464AC TYP MAX LT1464C/LT1465C MIN TYP MAX UNITS VOS Input Offset Voltage VS = ±5V VS = ±15V ● ● 0.5 0.9 1.4 2.8 0.5 0.9 1.4 2.8 mV mV ∆VOS ∆Temp Average Input Offset Voltage Drift (Note 6) ● 7 20 7 20 µV/°C IOS Input Offset Current ● 10 50 25 450 pA IB Input Bias Current ● 60 150 150 750 pA CMRR Common Mode Rejection Ratio VCM = – 12V to 15V ● 75 85 73 85 dB PSRR Power Supply Rejection Ratio VS = ±3V to ±20V ● 80 89 77 89 dB AVOL Large-Signal Voltage Gain VO = ±10V, RL = 10k VO = ±10V, RL = 2k ● ● 200 100 600 350 200 100 600 350 V/mV V/mV VS = ±5V, VO = ±2V, RL = 10k VS = ±5V, VO = ±1V, RL = 2k ● ● 80 45 200 150 80 45 200 150 V/mV V/mV VOUT Output Voltage Swing RL = 10k RL = 2k VS = ±5V, RL = 2k ● ● ● ±13.4 ±13.2 ±3.4 ±13.6 ±13.4 ±3.6 ±13.4 ±13.2 ±3.4 ±13.6 ±13.4 ±3.6 SR Slew Rate RL = 10k (Note 4) ● 0.4 0.8 0.4 0.8 V/µs GBW Gain Bandwidth Product f = 10kHz ● 540 870 540 870 kHz IS Supply Current per Amplifier VS = ±5V ● ● 160 150 220 220 160 150 220 220 µA µA VOS Offset Voltage Match (Note 7) VS = ±5V VS = ±15V ● ● 0.7 0.9 2.0 3.5 0.7 0.9 2.0 3.5 mV mV ∆IB+ Noninverting Bias Current Match (Note 7) ● 5 40 35 500 pA V V V 3 LT1464/LT1465 ELECTRICAL CHARACTERISTICS VS = ±15V, VCM = 0V, 0°C ≤ TA ≤ 70°C, unless otherwise noted. MIN LT1464AC TYP MAX LT1464C/LT1465C MIN TYP MAX SYMBOL PARAMETER CONDITIONS (Note 1) UNITS ∆CMRR Common Mode Rejection Match (Notes 5, 7) ● 73 84 70 84 dB ∆PSRR Power Supply Rejection Match (Notes 5, 7) ● 77 85 73 85 dB VS = ±15V, VCM = 0V, – 40°C ≤ TA ≤ 85°C (Note 2), unless otherwise noted. SYMBOL PARAMETER CONDITIONS (Note 1) MIN LT1464AC TYP MAX LT1464C/LT1465C MIN TYP MAX UNITS VOS Input Offset Voltage VS = ±5V VS = ±15V ● ● 0.6 1.0 1.5 3.0 0.6 1.0 1.5 3.0 mV mV ∆VOS ∆Temp Average Input Offset Voltage Drift (Note 6) ● 7 20 7 20 µV/°C IOS Input Offset Current ● 40 150 60 700 pA IB Input Bias Current ● 200 500 300 2500 pA CMRR Common Mode Rejection Ratio VCM = –12V to 15V ● 74 84 72 84 dB PSRR Power Supply Rejection Ratio VS = ±3V to ±20V ● 79 88 76 88 dB AVOL Large-Signal Voltage Gain VO = ±10V, RL = 10k VO = ±10V, RL = 2k ● ● 175 80 400 250 175 80 400 250 V/mV V/mV VS = ±5V, VO = ±2V, RL = 10k VS = ±5V, VO = ±1V, RL = 2k ● ● 70 45 180 140 70 45 180 140 V/mV V/mV VOUT Output Voltage Swing RL = 10k RL = 2k VS = ±5V, RL = 2k ● ● ● ±13.2 ±13.0 ±3.2 ±13.4 ±13.2 ±3.4 ±13.2 ±13.0 ±3.2 ±13.4 ±13.2 ±3.4 SR Slew Rate RL = 10k (Note 4) ● 0.35 0.7 0.35 0.7 V/µs GBW Gain Bandwidth Product f = 10kHz ● 510 850 510 850 kHz IS Supply Current per Amplifier VS = ±5V ● ● 165 160 230 230 165 160 230 230 µA µA VOS Offset Voltage Match (Note 7) VS = ±5V VS = ±15V ● ● 0.8 1.0 2.5 4.0 0.8 1.0 2.5 4.0 mV mV ∆IB+ Noninverting Bias Current Match (Note 7) ● 20 100 70 800 pA ∆CMRR Common Mode Rejection Match (Notes 5, 7) ● 72 83 69 83 dB ∆PSRR Power Supply Rejection Match (Notes 5, 7) ● 76 81 73 81 dB The ● denotes specifications which apply over the full operating temperature range. Note 1: Typical parameters are defined as 60% yield of parameter distributions of individual amplifiers, i.e., out of 100 LT1465s (or 100 LT1464s) typically 240 op amps (or 120) will be better than the indicated specification. Note 2: The LT1464 and LT1465 are designed, characterized and expected to meet these extended temperature limits, but are not tested at – 40°C and 85°C. Guaranteed I grade parts are available, consult factory. Note 3: Current noise is calculated from the formula: in = (2qib)1/2 where q = (1.6)(10)–19 coulomb. The noise of source resistors up to 1GΩ swamps the contribution of current noise. 4 V V V Note 4: Slew rate is measured in AV = –1; input signal is ±7.5V, output is measured at ±2.5V. Note 5: ∆CMRR and ∆PSRR are defined as follows: 1. CMRR and PSRR are measured in µV/V on the individual amplifiers. 2. The difference is calculated between the matching sides in µV/V. 3. The result is converted to dB. Note 6: This parameter is not 100% tested. Note 7: Matching parameters are the difference between amplifiers A and D and between B and C on the LT1465; between the two amplifiers on the LT1464. LT1464/LT1465 U W TYPICAL PERFORMANCE CHARACTERISTICS Input Bias and Offset Current vs Temperature Input Bias Current Over the Common Mode Range 16 80 LT1464/LT1465 LT1464A VS = ±15V TA = 25°C 1000 100 BIAS CURRENT 10 15 COMMON MODE RANGE (V) 70 60 INPUT BIAS CURRENT (pA) 50 40 30 20 10 OFFSET CURRENT 1 0 25 75 100 50 AMBIENT TEMPERATURE (°C) 125 –5 0 –10 5 10 COMMON MODE INPUT VOLTAGE (V) VS = ±5V 100 75 30 1/f CORNER = 9Hz 20 10 30 100 300 1k FREQUENCY (Hz) RL = 2k, VS = ±15V 400 0 25 50 75 100 125 150 TEMPERATURE (°C) LT1464 • TPC07 2 6 4 TIME (SEC) 8 1.75 Channel Separation vs Frequency SLEW FALL 1.50 1.25 1.5 160 1.3 140 1.1 GAIN BANDWIDTH 1.00 0.9 SLEW RISE VS = ±15V 0.50 –75 –50 –25 10 LT1464 • TPC06 Slew Rate, Gain Bandwidth Product vs Temperature 0.75 RL = 2k, VS = ±5V RL = 10k, VS = ±5V 0 10k LT1464 • TPC05 SLEW RATE (V/µs) RL = 10k, VS = ±15V 800 3k 0.7 0.5 0 25 50 75 100 125 150 TEMPERATURE (°C) LT1464 • TPC08 GAIN BANDWIDTH (MHz) VOLTAGE GAIN (V/mV) 0.1Hz to 10Hz Noise 50 3 VO = ±10V, VS = ±15V VO = ±2V, RL = 10k, VS = ±5V VO = ±1V, RL = 2k, VS = ±5V 100 125 LT1464 • TPC03 10 100 125 Voltage Gain vs Temperature 0 –75 –50 –25 –75 –50 –25 0 25 50 75 TEMPERATURE (°C) 15 VS = ±15V TA = 25°C 70 LT1464 • TPC04 200 VS = ±15V NOISE VOLTAGE (2µV/DIV) RMS VOLTAGE NOISE DENSITY (nV/√Hz) SUPPLY CURRENT PER AMPLIFIER (µA) VS = ±15V 150 600 –13 Voltage Noise vs Frequency 175 1k –12 LT1464 • TPC02 200 1.2k –11 –15 100 1.4k 12 –14 Supply Current vs Temperature 50 25 50 75 –75 –50 –25 0 TEMPERATURE (°C) 13 –10 –15 LT1464 • TPC01 125 14 0 CHANNEL SEPARATION (dB) INPUT BIAS AND OFFSET CURRENT (pA) 10000 Common Mode Range vs Temperature VS = ±15V TA = 25°C VIN = 10VP-P RL = 10k 120 100 80 60 10 100 10k 1k FREQUENCY (Hz) 100k 1M LT1464 • TPC09 5 LT1464/LT1465 U W TYPICAL PERFORMANCE CHARACTERISTICS 120 VS = ±15V TA = 25°C 60 PHASE 60 30 40 20 20 GAIN 10 0 60 40 –40 0.1 1 FREQUENCY (MHz) NEGATIVE SUPPLY 20 –20 –10 0.01 60 40 20 0 POSITIVE SUPPLY 80 CMRR (dB) VOLTAGE GAIN (dB) PHASE MARGIN = 66°, CL = 10pF 100 80 PHASE MARGIN (DEG) 80 TA = 25°C VS = ±15V TA = 25°C 100 50 40 120 100 PSRR (dB) 70 Power Supply Rejection Ratio vs Frequency Common Mode Rejection Ratio vs Frequency Gain and Phase vs Frequency 0 0 10 10 100 10k 1k FREQUENCY (Hz) 10k 10 1M 100 1k 10k FREQUENCY (Hz) LT1464 • TPC10 LT1464 • TPC12 LT1464 • TPC11 Common Mode and Power Supply Rejections vs Temperature Phase Margin vs CLOAD 100 95 PSRR 70 CMRR, PSRR (dB) PHASE MARGIN (DEG) 80 60 50 40 30 20 90 CMRR 85 80 CL = 0pF VS = ±15V TA = 25°C AV = 1 VS = ±2.5V TO ±20V FOR PSRR VS = ±15V, VCM = –12V TO 15V FOR CMRR OUTPUT IMPEDANCE (Ω) VS = ±15V TA = 25°C 90 Closed-Loop Output Impedance 1000 100 1M 100k 100 CL = 1000pF 10 CL = 10nF 1 75 10 70 25 50 75 –75 –50 –25 0 TEMPERATURE (°C) 0 1 100 1000 10 CAPACITIVE LOAD (pF) 10000 20µs/DIV 0V AV = 1 CL = 10pF LT1464 • TPC16 1k 10k 100k FREQUENCY (Hz) 1M 10M Small-Signal Response, VS = ±5V, ±15V, CLOAD = 1000pF 50mV/DIV 0V 100 LT1464 • TPC15 Small-Signal Response, VS = ±5V, ±15V 20mV/DIV 5V/DIV Large-Signal Response, VS = ±15V 6 10 LT1464 • TPC14 LT1464 • TPC13 AV = 1 CL = 10pF 0.1 100 125 0.5µs/DIV 0V AV = 1 CL = 1000pF LT1464 • TPC17 5µs/DIV LT1464 • TPC18 LT1464/LT1465 U W U U APPLICATIONS INFORMATION Phase Reversal Protection Most industry standard JFET input single, dual and quad op amps exhibit phase reversal at the output when the negative common mode limit at the input is exceeded. Common mode range is at a premium at ±5V supplies. The Figures show a ±5.2V sine wave input (Figure 1a), the response of a competing JFET input op amp in the unity- (1a) ±5.2V Sine Wave gain follower mode (Figure 1b) and the response of the LT1464/LT1465 (Figure 1c). The phase reversal of Figure 1b can cause lock-up in servo systems. The LT1464/LT1465 does not phase-reverse when the common mode input is anywhere within the supplies. LT1464 • F01b LT1464 • F01a (1b) Typical JFET Input Op Amp with ±5V Supplies LT1464 • F01c (1c) LT1464/LT1465 Output with ±5V Supplies Figure 1. Voltage Follower with Input Exceeding the Common Mode Range (VS = ±5V) 7 LT1464/LT1465 U TYPICAL APPLICATIONS Low Voltage 0.016% Voltage to Frequency Converter LT1009 VREF = –2.5V R3 1k –5V C4 1µF 17 1/2 LTC®1043 5V 8 7 fOUT: 0kHz to 30kHz 11 14 RIN VIN 0V TO 5V 6.19k 13 12 4 GAIN 2.5k 5 )( ) VIN 1 (RIN)(CIN) VREF 16 8 – 7 1/2 LT1464 C1 0.1µF ( CIN 0.01µF 5V 6 fOUT = + 4 –5V C2 30pF R1 20k R3 330k Q1 2N2907A C3 1µF –5V LT1464 • TA03 10Hz 4th Order Chebyshev Lowpass Filter (0.01dB Ripple) R2 237k R5 154k C1 33nF R1 237k R3 249k VIN C2 100nF C3 10nF 15V 2 – 4 1/4 LT1465 3 1 R4 154k R6 249k 13 – 12 + + 11 C4 330nF 1/4 LT1465 –15V TYPICAL OFFSET ≈ 0.6mV 1% TOLERANCES FOR VIN = 10VP-P,V OUT = –110dB AT f > 300Hz V OUT = –6dB AT f = 16Hz THE LOW INPUT BIAS CURRENTS ALLOW THE USE OF HIGH RESISTOR VALUES 8 14 VOUT LT1464 • TA05 LT1464/LT1465 W W SI PLIFIED SCHE ATIC VCC R20 R6 R3 R4 Q3 ×4 Q4 R7 Q5 J4 J3 R5 Q17 Q7 R17 – IN Q18 Q20 J5 R22 C2 R10 Q16 +IN Q22 R18 OUT J1 J2 VCC VCC Q21 C1 Q15 Q28 VEE Q25 Q13 Q14 Q1 Q8 R5 Q23 R16 Q11 10µA R1 R19 R1O Q29 Q2 Q9 R2 R5 Q19 Q24 VEE Q10 Q26 Q27 R10 1464 SS VEE 9 LT1464/LT1465 U PACKAGE DESCRIPTION Dimensions in inches (millimeters) unless otherwise noted. N8 Package 8-Lead PDIP (Narrow 0.300) (LTC DWG # 05-08-1510) 0.400* (10.160) MAX 8 7 6 5 1 2 3 4 0.255 ± 0.015* (6.477 ± 0.381) 0.300 – 0.325 (7.620 – 8.255) 0.065 (1.651) TYP 0.009 – 0.015 (0.229 – 0.381) ( +0.635 –0.381 0.125 (3.175) MIN 0.005 (0.127) MIN +0.025 0.325 –0.015 8.255 0.130 ± 0.005 (3.302 ± 0.127) 0.045 – 0.065 (1.143 – 1.651) ) 0.018 ± 0.003 (0.457 ± 0.076) 0.100 ± 0.010 (2.540 ± 0.254) 0.015 (0.380) MIN N8 0695 *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm) S8 Package 8-Lead Plastic Small Outline (Narrow 0.150) (LTC DWG # 05-08-1610) 0.189 – 0.197* (4.801 – 5.004) 8 7 6 5 0.150 – 0.157** (3.810 – 3.988) 0.228 – 0.244 (5.791 – 6.197) 1 0.010 – 0.020 × 45° (0.254 – 0.508) 0.008 – 0.010 (0.203 – 0.254) 0.053 – 0.069 (1.346 – 1.752) 0°– 8° TYP 0.016 – 0.050 0.406 – 1.270 *DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE 10 0.014 – 0.019 (0.355 – 0.483) 2 3 4 0.004 – 0.010 (0.101 – 0.254) 0.050 (1.270) BSC SO8 0695 LT1464/LT1465 U PACKAGE DESCRIPTION Dimensions in inches (millimeters) unless otherwise noted. N Package 14-Lead PDIP (Narrow 0.300) (LTC DWG # 05-08-1510) 0.770* (19.558) MAX 14 13 12 11 10 9 8 1 2 3 4 5 6 7 0.255 ± 0.015* (6.477 ± 0.381) 0.130 ± 0.005 (3.302 ± 0.127) 0.300 – 0.325 (7.620 – 8.255) 0.045 – 0.065 (1.143 – 1.651) 0.015 (0.380) MIN 0.065 (1.651) TYP 0.009 – 0.015 (0.229 – 0.381) +0.025 0.325 –0.015 0.005 (0.125) MIN 0.100 ± 0.010 (2.540 ± 0.254) *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm) ( +0.635 8.255 –0.381 ) 0.018 ± 0.003 (0.457 ± 0.076) 0.125 (3.175) MIN N14 0695 S Package 14-Lead Plastic Small Outline (Narrow 0.150) (LTC DWG # 05-08-1610) 0.337 – 0.344* (8.560 – 8.738) 14 13 12 11 10 9 8 0.228 – 0.244 (5.791 – 6.197) 0.150 – 0.157** (3.810 – 3.988) 1 0.010 – 0.020 × 45° (0.254 – 0.508) 0.008 – 0.010 (0.203 – 0.254) 2 3 4 5 6 0.053 – 0.069 (1.346 – 1.752) 0.004 – 0.010 (0.101 – 0.254) 0° – 8° TYP 0.016 – 0.050 0.406 – 1.270 0.014 – 0.019 (0.355 – 0.483) 7 0.050 (1.270) TYP *DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. S14 0695 11 LT1464/LT1465 U TYPICAL APPLICATION Low Voltage 0.027% Frequency to Voltage Converter R2 75k* 10k GAIN TRIM C2 1µF R1 1k 13 LT1004-1.2C 2 14 C1 1µF – 8 1/2 LT1464 3 12 fIN = FREQUENCY IN 0kHz to 30kHz 5V 1/4 LTC1043 VREF = –1.235V –5V 16 CS 1000pF 4 5V 17 –5V + 1 0V TO 3V OUTPUT 4 –5V V OUT = (R2)(CS)(VREF)fIN *TRW#MTR-5/120ppm LT1464 • TA04 RELATED PARTS PART NUMBER DESCRIPTION COMMENTS LT1057 Dual JFET Input Precision, High Speed Op Amp Fast Settling Time, 14V/µs Slew Rate, 5Mhz GBW, 450µV VOS (Max), 50pA IOS (Max) LT1113 Dual Low Noise, Precision, JFET Input Op Amp 6nV/√Hz Input Noise Voltage Density, 480pA IB, 6.3MHz GBW LT1169 Dual Low Noise, Picoampere Bias Current, JFET Input Op Amp 20pA IB, 8nV/√Hz en, 5.3MHz GBW, 1.5pF Input Capacitance LT1457 Dual Precision JFET Input Op Amp C-Load Drives 10,000pF Capacitive Load, 450µV VOS (Max), 4µV/°C Drift LT1462/LT1463 Dual/Quad Micropower, C-Load Picoampere Bias Current JFET Input Op Amps 28µA Supply Current Per Amplifiers Drives 10µF Capacitive Load, 175kHz GBW 12 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417● (408)432-1900 FAX: (408) 434-0507● TELEX: 499-3977 ● www.linear-tech.com 14645fa LT/GP 0197 5K REV A • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1996