LMC6034 NSC | Alldatasheet

Document overview

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Technical content

Features

n Specified for 2 kΩ and 600Ω loads n High voltage gain: 126 dB n Low offset voltage drift: 2.3 µV/˚C n Ultra low input bias current: 40 fA n Input common-mode range includes V− n Operating Range from +5V to +15V supply n ISS = 400 µA/amplifier; independent of V+ n Low distortion: 0.01% at 10 kHz n Slew rate: 1.1 V/µs n Improved performance over TLC274

Applications

n High-impedance buffer or preamplifier n Current-to-voltage converter n Long-term integrator n Sample-and-hold circuit n Medical instrumentation Connection Diagram

Ordering Information

Temperature Range Package NSC Drawing Transport MediaIndustrial LMC6034IN 14-Pin N14A Rail Molded DIP LMC6034IM 14-Pin M14A Rail Small Outline Tape and Reel 14-Pin DIP/SO DS011134-1 Top View May 1998 LMC6034 CMOS Quad Operational Amplifier © 1999 National Semiconductor Corporation DS011134 www.national.com

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 Supply Voltage (V+ −V −) 16V Output Short Circuit to V+ (Note 10) Output Short Circuit to V− (Note 2) Lead Temperature (Soldering, 10 sec.) 260˚C Storage Temperature Range −65˚C to +150˚C Power Dissipation (Note 3) Voltage at Output/Input Pin (V Current at Output Pin ±18 mA Current at Input Pin ±5m A Current at Power Supply Pin 35 mA Junction Temperature (Note 3) 150˚C ESD Tolerance (Note 4) 1000V Operating Ratings(Note 1) Temperature Range −40˚C ≤ TJ ≤ +85˚C Supply Voltage Range 4.75V to 15.5V Power Dissipation (Note 11) Thermal Resistance (θ JA), (Note 12) 14-Pin DIP 85˚C/W 14-Pin SO 115˚C/W Unless otherwise specified, all limits guaranteed for TJ = 25˚C.Boldfacelimits apply at the temperature extremes. V+ = 5V, V− = GND = 0V, VCM = 1.5V, VOUT = 2.5V, and RL > 1M unless otherwise specified. Symbol Parameter Conditions Typical (Note 5) LMC6034I Units Limit (Note 6) VOS Input Offset Voltage 1 9 mV 11 max ΔVOS /ΔT Input Offset Voltage 2.3 µV/˚C Average Drift IB Input Bias Current 0.04 pA 200 max IOS Input Offset Current 0.01 pA 100 max R IN Input Resistance >1 Tera Ω CMRR Common Mode 0V ≤ VCM ≤ 12V 83 63 dB Rejection Ratio V + = 15V 60 min +PSRR Positive Power Supply 5V ≤ V+ ≤ 15V 83 63 dB Rejection Ratio V O = 2.5V 60 min −PSRR Negative Power Supply 0V ≤ V− ≤ −10V 94 74 dB Rejection Ratio 70 min VCM Input Common-Mode V + = 5V & 15V −0.4 −0.1 V Voltage Range For CMRR ≥ 50 dB 0 max V+ − 2.6 min AV Large Signal Voltage Gain R L = 2k Ω (Note 7) 2000 200 V/mV Sourcing 100 min Sinking 500 90 V/mV 40 min R L = 600Ω (Note 7) 1000 100 V/mV Sourcing 75 min Sinking 250 50 V/mV 20 min www.national.com 2

Unless otherwise specified, all limits guaranteed for TJ = 25˚C.Boldfacelimits apply at the temperature extremes. V+ = 5V, V− = GND = 0V, VCM = 1.5V, VOUT = 2.5V, and RL > 1M unless otherwise specified. Symbol Parameter Conditions Typical (Note 5) LMC6034I Units Limit (Note 6) VO Output Voltage Swing V + = 5V 4.87 4.20 V R L = 2k Ω to 2.5V 4.00 min 0.10 0.25 V 0.35 max V+ = 5V 4.61 4.00 V R L = 600Ω to 2.5V 3.80 min 0.30 0.63 V 0.75 max V+ = 15V 14.63 13.50 V R L = 2k Ω to 7.5V 13.00 min 0.26 0.45 V 0.55 max V+ = 15V 13.90 12.50 V R L = 600Ω to 7.5V 12.00 min 0.79 1.45 V 1.75 max IO Output Current V + = 5V 22 13 mA Sourcing, VO = 0V 9 min Sinking, VO = 5V 21 13 mA 9 min V+ = 15V 40 23 mA Sourcing, VO = 0V 15 min Sinking, VO = 13V 39 23 mA (Note 10) 15 min IS Supply Current All Four Amplifiers 1.5 2.7 mA VO = 1.5V 3.0 max www.national.com3

Unless otherwise specified, all limits guaranteed for TJ = 25˚C.Boldfacelimits apply at the temperature extremes. V+ = 5V, V− = GND = 0V, VCM = 1.5V, VOUT = 2.5V, and RL > 1M unless otherwise specified. Symbol Parameter Conditions Typical (Note 5) LMC6034I Units Limit (Note 6) SR Slew Rate (Note 8) 1.1 0.8 V/µs 0.4 min GBW Gain-Bandwidth Product 1.4 MHz φ M Phase Margin 50 Deg G M Gain Margin 17 dB Amp-to-Amp Isolation (Note 9) 130 dB e n Input-Referred Voltage Noise F = 1 kHz 22 in Input-Referred Current Noise F = 1 kHz 0.0002 THD Total Harmonic Distortion F = 10 kHz, AV = −10 R L = 2k Ω ,V O = 8V PP 0.01 % ±5V Supply Note 1:Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Operating Ratings indicate conditions for which the device is intended 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 and/or multiple Op Amp shorts can result in exceeding the maximum 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,T A. The maximum allowable power dissipation at any ambient temperature is PD = (TJ(max)–TA)/θJA. Note 4:Human body model, 100 pF discharged through a 1.5 kΩ resistor. Note 5:Typical values represent the most likely parametric norm. Note 6:All limits are guaranteed at room temperature (standard type face) or at operating temperature extremes (bold type face). Note 8:V+ = 15V. Connected as Voltage Follower with 10V step input. Number specified is the slower of the positive and negative slew rates. Note 9:Input referred. V+ = 15V and RL = 10 kΩ connected to V+/2. Each amp excited in turn with 1 kHz to produce VO = 13 VPP . Note 10:Do not connect output to V+, when V+ is greater than 13V or reliability may be adversely affected. Note 11:For operating at elevated temperatures the device must be derated based on the thermal resistanceθJA with PD = (TJ −T A)/θJA. Note 12:All numbers apply for packages soldered directly into a PC board. Typical Performance CharacteristicsVS = ±7.5V, TA = 25˚C unless otherwise specified Supply Current vs Supply Voltage DS011134-23 Input Bias Current DS011134-24 Output Characteristics Current Sinking DS011134-25 www.national.com 4

Typical Performance CharacteristicsVS = ±7.5V, TA = 25˚C unless otherwise specified (Continued) Applications Hint Amplifier Topolgy The topology chosen for the LMC6034, shown inFigure 1,i s unconventional (compared to general-purpose op amps) in that the traditional unity-gain buffer output stage is not used; instead, the output is taken directly from the output of the in- tegrator, to allow a larger output swing. Since the buffer tra- ditionally delivers the power to the load, while maintaining high op amp gain and stability, and must withstand shorts to either rail, these tasks now fall to the integrator. As a result of these demands, the integrator is a compound affair with an embedded gain stage that is doubly fed forward (via C f and Cff) by a dedicated unity-gain compensation driver. In addition, the output portion of the integrator is a push-pull configuration for delivering heavy loads. While sinking current the whole amplifier path consists of three gain stages with one stage fed forward, whereas while sourcing the path contains four gain stages with two fed forward. Output Characteristics Current Sourcing DS011134-27 Input Voltage Noise vs Frequency DS011134-28 CMRR vs Frequency DS011134-29 Open-Loop Frequency Response DS011134-30 Frequency Response vs Capacitive Load DS011134-31 Non-Inverting Large Signal Pulse Response DS011134-32 Stability vs Capacitive Load DS011134-33 Stability vs Capacitive Load DS011134-34 Note:Avoid resistive loads of less than 500Ω , as they may cause instability. www.national.com5

Typical Single-Supply Applications(V+ = 5.0 VDC) Additional single-supply applications ideas can be found in the LM324 datasheet. The LMC6034 is pin-for-pin compat- ible with the LM324 and offers greater bandwidth and input resistance over the LM324. These features will improve the performance of many existing single-supply applications. Note, however, that the supply voltage range of the LMC6034 is smaller than that of the LM324. For good CMRR over temperature, low drift resistors should be used. Matching of R3 to R6 and R4 to R7 affect CMRR. Gain may be adjusted through R2. CMRR may be adjusted through R7. Oscillator frequency is determined by R1, R2, C1, and C2: fosc= 1/2πRC, where R= R1 = R2 and C = C1 = C2. This circuit, as shown, oscillates at 2.0 kHz with a peak-to-peak output swing of 4.0V. Low-Leakage Sample-and-Hold DS011134-13 Instrumentation Amplifier DS011134-14 Sine-Wave Oscillator DS011134-15

1 Hz Square-Wave Oscillator

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Typical Single-Supply Applications (V+ = 5.0 VDC) (Continued)

10 Hz Bandpass Filter

fO = 10 Hz Q = 2.1 Gain = −8.8

10 Hz High-Pass Filter

fc = 10 Hz d = 0.895 Gain = 1 2 dB passband ripple

1 Hz Low-Pass Filter

(Maximally Flat, Dual Supply Only) DS011134-19 fc = 1H z d = 1.414 Gain = 1.57 High Gain Amplifier with Offset Voltage Reduction DS011134-21 Gain = −46.8 Output offset voltage reduced to the level of the input offset voltage of the bottom amplifier (typically 1 mV). www.national.com 10

Physical Dimensionsinches (millimeters) unless otherwise noted Small Outline Dual-In-Line Pkg. (M) Order Number LMC6034IM Molded Dual-In-Line Pkg. (N) Order Number LMC6034IN www.national.com11

NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure 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 reasonably 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 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 www.national.com LMC6034 CMOS Quad Operational 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.