LMC6001 NSC | Alldatasheet

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Technical content

Features

(Max limit, 25˚C unless otherwise noted) n Input current (100% tested): 25 fA n Input current over temp.: 2 pA n Low power: 750 µA n Low VOS : 350 µV n Low noise: 22 nV/√Hz @1 kHz Typ.

Applications

n A.T.E. leakage testing Connection Diagrams 8-Pin DIP DS011887-1 Top View 8-Pin Metal Can DS011887-2 Top View March 1995 LMC6001 Ultra Ultra-Low Input Current Amplifier © 1999 National Semiconductor Corporation DS011887 www.national.com

Ordering Information

Package Industrial Temperature Range NSC Package −40˚C to +85˚C Drawing 8-Pin LMC6001AIN, LMC6001BIN, N08E Molded DIP LMC6001CIN 8-Pin LMC6001AIH, LMC6001BIH H08C Metal Can www.national.com 2

Absolute Maximum Ratings(Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Differential Input Voltage ±Supply Voltage Voltage at Input/Output Pin (V +) + 0.3V, (V−) − 0.3V Supply Voltage (V+ −V −) −0.3V to +16V Output Short Circuit to V+ (Notes 2, 10) Output Short Circuit to V− (Note 2) Lead Temperature (Soldering, 10 Sec.) 260˚C Storage Temperature −65˚C to +150˚C Junction Temperature 150˚C Current at Input Pin ±10 mA Current at Output Pin ±30 mA Current at Power Supply Pin 40 mA Power Dissipation (Note 9) ESD Tolerance (Note 9) 2 kV Operating Ratings(Note 1) Temperature Range LMC6001AI, LMC6001BI, LMC6001CI −40˚C ≤ T J ≤ +85˚C Supply Voltage 4.5V ≤ V+ ≤ 15.5V Thermal Resistance (Note 11) θJA, N Package 100˚C/W θJA, H Package 145˚C/W θJC, H Package 45˚C/W Power Dissipation (Note 8) Limits in standard typeface guaranteed for TJ = 25˚C and limits inboldface typeapply at the temperature extremes. Unless otherwise specified, V+ = 5V, V− = 0V, VCM = 1.5V, and RL > 1M. Symbol Parameter Conditions Typical (Note 4) Limits(Note 5) Units LMC6001AI LMC6001BI LMC6001CI IB Input Current Either Input, V CM = 0V, 10 25 100 1000 fAVS = ±5V 2000 4000 4000 IOS Input Offset Current 5 1000 2000 2000 VOS Input Offset Voltage 0.35 1.0 1.0 mV1.0 1.7 2.0 VS = ±5V, VCM = 0V 0.7 1.35 1.35 1.35 2.0 TCV OS Input Offset 2.5 10 10 µV/˚C Voltage Drift R IN Input Resistance >1 Tera Ω CMRR Common Mode 0V ≤ VCM ≤ 7.5V 83 75 72 66 dB min Rejection Ratio V + = 10V 72 68 63 +PSRR Positive Power Supply 5V ≤ V+ ≤ 15V 83 73 66 66 Rejection Ratio 70 63 63 −PSRR Negative Power 0V ≥ V− ≥ −10V 94 80 74 74 Supply Rejection Ratio 77 71 71 AV Large Signal Sourcing, R L = 2k Ω 1400 400 300 300 V/mV min Voltage Gain (Note 6) 300 200 200 Sinking, RL = 2k Ω 350 180 90 90 (Note 6) 100 60 60 VCM Input Common-Mode V + = 5V and 15V −0.4 −0.1 −0.1 −0.1 V Voltage For CMRR ≥ 60 dB 000 max VO Output Swing V + = 5V 4.87 4.80 4.75 4.75 V R L = 2k Ω to 2.5V 4.73 4.67 4.67 min 0.10 0.14 0.20 0.20 V 0.17 0.24 0.24 max V+ = 15V 14.63 14.50 14.37 14.37 V R L = 2k Ω to 7.5V 14.34 14.25 14.25 min 0.26 0.35 0.44 0.44 V 0.45 0.56 0.56 max www.national.com3

Limits in standard typeface guaranteed for TJ = 25˚C and limits inboldface typeapply at the temperature extremes. Unless otherwise specified, V+ = 5V, V− = 0V, VCM = 1.5V, and RL > 1M. Symbol Parameter Conditions Typical (Note 4) Limits(Note 5) Units LMC6001AI LMC6001BI LMC6001CI IO Output Current Sourcing, V + = 5V, 22 16 13 13 mA min VO = 0V 10 8 8 Sinking, V+ = 5V, 21 16 13 13 VO = 5V 13 10 10 Sourcing, V+ = 15V, 30 28 23 23 VO = 0V 22 18 18 Sinking, V+ = 15V, VO = 13V (Note 10) 34 28 23 23 22 18 18 IS Supply Current V + = 5V, VO = 1.5V 450 750 750 750 µA max 900 900 900 V+ = 15V, VO = 7.5V 550 850 850 850 950 950 950 www.national.com 4

Limits in standard typeface guaranteed for TJ = 25˚C and limits inboldface typeapply at the temperature extremes. Unless otherwise specified, V+ = 5V, V− = 0V, VCM = 1.5V and RL > 1M. Symbol Parameter Conditions Typical Limits (Note 5) Units (Note 4) LM6001AI LM6001BI LM6001CI SR Slew Rate (Note 7) 1.5 0.8 0.8 0.8 V/µs 0.6 0.6 0.6 min GBW Gain-Bandwidth Product 1.3 MHz φf m Phase Margin 50 Deg G M Gain Margin 17 dB en Input-Referred Voltage Noise F= 1 kHz 22 nV/ √Hz in Input-Referred Current Noise F= 1 kHz 0.13 fA/ √Hz THD Total Harmonic Distortion F = 10 kHz, AV = −10, R L = 100 kΩ , VO = 8V PP 0.01 Note 1:Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is in- tended to be functional but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Note 2:Applies to both single supply and split supply operation. Continuous short circuit operation at elevated ambient temperature can result in exceeding the maxi- mum allowed junction temperature of 150˚C. Output currents in excess of±30 mA over long term may adversely affect reliability. Note 3:The maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any ambient temperature is PD = (TJ(max)−T A)/θJA. Note 4:Typical values represent the most likely parametric norm. Note 5:All limits are guaranteed by testing or statistical analysis. Note 7:V+ = 15V. Connected as Voltage Follower with 10V step input. Limit specified is the lower of the positive and negative slew rates. Note 8:For operating at elevated temperatures the device must be derated based on the thermal resistanceθJA with PD = (TJ −T A)/θJA. Note 9:Human body model, 1.5 kΩ in series with 100 pF. Note 10:Do not connect the output to V+, when V+ is greater than 13V or reliability will be adversely affected. Note 11:All numbers apply for packages soldered directly into a printed circuit board. www.national.com5

Typical Performance CharacteristicsVS = ±7.5V, TA = 25˚C, unless otherwise specified Input Current vs Temperature DS011887-16 Input Current vs V CM VS = ±5V DS011887-17 Supply Current vs Supply Voltage DS011887-18 Input Voltage vs Output Voltage DS011887-19 Common Mode Rejection Ratio vs Frequency DS011887-20 Power Supply Rejection Ratio vs Frequency DS011887-21 Input Voltage Noise vs Frequency DS011887-22 Noise Figure vs Source Resistance DS011887-23 Output Characteristics Sourcing Current DS011887-24 www.national.com 6

Typical Performance CharacteristicsVS = ±7.5V, TA = 25˚C, unless otherwise specified (Continued) Applications Hints AMPLIFIER TOPOLOGY The LMC6001 incorporates a novel op-amp design topology that enables it to maintain rail-to-rail output swing even when driving a large load. Instead of relying on a push-pull unity gain output buffer stage, the output stage is taken directly from the internal integrator, which provides both low output impedance and large gain. Special feed-forward compensa- tion design techniques are incorporated to maintain stability over a wider range of operating conditions than traditional op-amps. These features make the LMC6001 both easier to design with, and provide higher speed than products typi- cally found in this low power class. COMPENSATING FOR INPUT CAPACITANCE It is quite common to use large values of feedback resis- tance for amplifiers with ultra-low input current, like the LMC6001. Output Characteristics Sinking Current DS011887-25 Gain and Phase Response vs Temperature (−55˚C to +125˚C) DS011887-26 Gain and Phase Response vs Capacitive Load with R L = 500 kΩ DS011887-27 Open Loop Frequency Response DS011887-28 Inverting Small Signal Pulse Response DS011887-29 Inverting Large Signal Pulse Response DS011887-30 Non-Inverting Small Signal Pulse Response DS011887-31 Non-Inverting Large Signal Pulse Response DS011887-32 Stability vs Capacitive Load DS011887-33 www.national.com7

∴ AV ≈ 100 for circuit shown (R2 = 9.85k). FIGURE 8. Instrumentation Amplifier

Physical Dimensionsinches (millimeters) unless otherwise noted 8-Pin Metal Can Package (H) Order Number LMC6001AIH or LMC6001BIH 8-Pin Molded Dual-In-Line Package Order Number LMC6001AIN, LMC6001BIN or LMC6001CIN www.national.com13

Physical Dimensionsinches (millimeters) unless otherwise noted (Continued) LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DE- VICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMI- CONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or sys- tems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose fail- ure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. A critical component is any component of a life support device or system whose failure to perform can be rea- sonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. National Semiconductor Corporation Americas Tel: 1-800-272-9959 Fax: 1-800-737-7018 Email: support@nsc.com www.national.com National Semiconductor Europe Fax: +49 (0) 1 80-530 85 86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 1 80-530 85 85 English Tel: +49 (0) 1 80-532 78 32 Français Tel: +49 (0) 1 80-532 93 58 Italiano Tel: +49 (0) 1 80-534 16 80 National Semiconductor Asia Pacific Customer Response Group Tel: 65-2544466 Fax: 65-2504466 Email: sea.support@nsc.com National Semiconductor Japan Ltd. Tel: 81-3-5639-7560 Fax: 81-3-5639-7507 LMC6001 Ultra Ultra-Low Input Current Amplifier National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.