lmc6022imx National Semiconductor Corporation, lmc6022imx Datasheet

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lmc6022imx

Manufacturer Part Number
lmc6022imx
Description
Low Power Cmos Dual Operational Amplifier
Manufacturer
National Semiconductor Corporation
Datasheet

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© 2004 National Semiconductor Corporation
LMC6022
Low Power CMOS Dual Operational Amplifier
General Description
The LMC6022 is a CMOS dual operational amplifier which
can operate from either a single supply or dual supplies. Its
performance features include an input common-mode range
that reaches V
100k and 5 kΩ loads) that is equal to or better than widely
accepted bipolar equivalents, while the power supply re-
quirement is less than 0.5 mW.
This chip is built with National’s advanced Double-Poly
Silicon-Gate CMOS process.
See the LMC6024 datasheet for a CMOS quad operational
amplifier with these same features.
Features
n Specified for 100 kΩ and 5 kΩ loads
n High voltage gain:
n Low offset voltage drift: 2.5 µV/˚C
Connection Diagram
, low input bias current, and voltage gain (into
120 dB
LMC6022 Circuit Topology (Each Amplifier)
DS011236
8-Pin DIP/SO
Top View
n Ultra low input bias current: 40 fA
n Input common-mode range includes V
n Operating range from +5V to +15V supply
n Low distortion: 0.01% at 1 kHz
n Slew rate: 0.11 V/µs
n Micropower operation: 0.5 mW
Applications
n High-impedance buffer or preamplifier
n Current-to-voltage converter
n Long-term integrator
n Sample-and-hold circuit
n Peak detector
n Medical instrumentation
n Industrial controls
01123606
01123601
October 2004
www.national.com

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lmc6022imx Summary of contents

Page 1

... Specified for 100 kΩ and 5 kΩ loads n High voltage gain: 120 dB n Low offset voltage drift: 2.5 µV/˚C Connection Diagram © 2004 National Semiconductor Corporation n Ultra low input bias current Input common-mode range includes V n Operating range from +5V to +15V supply n Low distortion: 0.01 kHz n Slew rate: 0.11 V/µ ...

Page 2

Absolute Maximum Ratings Differential Input Voltage + − Supply Voltage (V − Lead Temperature (Soldering, 10 sec.) Storage Temperature Range Junction Temperature ESD Tolerance (Note 4) Voltage at Output/Input Pin Current at Output Pin Current at Power Supply ...

Page 3

DC Electrical Characteristics The following specifications apply for V face limits apply at the temperature extremes; all other limits T Symbol Parameter V Output Voltage Swing O I Output Current O I Supply Current S (Continued) + − = 5V, ...

Page 4

AC Electrical Characteristics The following specifications apply for V Boldface limits apply at the temperature extremes; all other limits T Symbol Parameter SR Slew Rate GBW Gain-Bandwidth Product φ Phase Margin M G Gain Margin M Amp-to-Amp Isolation e Input-Referred ...

Page 5

Typical Performance Characteristics Supply Current vs. Supply Voltage Input Common-ModeVoltage Range vs.Temperature Output Characteristics Current Sourcing ± 7.5V 25˚C unless otherwise specified S A Input Bias Current vs. Temperature 01123627 Output Characteristics Current Sinking 01123629 Input ...

Page 6

Typical Performance Characteristics Crosstalk Rejection vs. Frequency CMRR vs. Temperature Open-Loop Voltage Gain vs. Temperature www.national.com ± 7.5V 25˚C unless otherwise specified (Continued CMRR vs. Frequency 01123633 Power Supply Rejection Ratio vs. Frequency 01123635 ...

Page 7

Typical Performance Characteristics Gain and Phase Responses vs. Load Capacitance Gain Error (V vs Inverting Slew Rate vs. Temperature ± 7.5V 25˚C unless otherwise specified (Continued Gain and Phase Responses vs. Temperature ...

Page 8

Typical Performance Characteristics Non-Inverting Small Signal Pulse Response (A = +1) V Inverting Small-Signal Pulse Response Stability vs. Capacitive Load www.national.com ± 7.5V 25˚C unless otherwise specified (Continued Inverting Large-Signal Pulse Response 01123645 Stability ...

Page 9

... Electrical Characteristics. The op amp can drive load resistance as low as 500Ω without instability. COMPENSATING INPUT CAPACITANCE Refer to the LMC660 or LMC662 datasheets to determine whether or not a feedback capacitor will be necessary for compensation and what the value of that capacitor would be. CAPACITIVE LOAD TOLERANCE Like many other op amps, the LMC6022 may oscillate when its applied load appears capacitive ...

Page 10

Application Hints (Continued the inputs, then even a resistance of 10 cause only 0. leakage current, or perhaps a minor (2:1) degradation of the amplifier’s performance. See Figure FIGURE 4. Example of Guard Ring in ...

Page 11

Application Hints (Continued) The designer should be aware that when it is inappropriate to lay out a PC board for the sake of just a few circuits, there is another technique which is even better than a guard ring on ...

Page 12

Typical Single-Supply Applications ( (Continued) DC Micropower Current Source (Upper limit of output range dictated by input common-mode range; lower limit dictated by minimum current requirement of LM385 R5 R6, and ...

Page 13

Typical Single-Supply Applications ( (Continued) DC Sine-Wave Oscillator Oscillator frequency is determined by R1, R2, C1, and C2 1/2πRC OSC where and C2. This circuit, ...

Page 14

... Output offset voltage reduced to the level of the input offset voltage of the bottom amplifier (typically 1 mV), referred to V Ordering Information Temperature Range Industrial −40˚C ≤ T ≤ +85˚C J LMC6022IM LMC6022IMX www.national.com ( (Continued) DC High Gain Amplifier with Offset Voltage Reduction Package 8-Pin ...

Page 15

Physical Dimensions inches (millimeters) unless otherwise noted 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 ...

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