lmc6032-mda National Semiconductor Corporation, lmc6032-mda Datasheet

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lmc6032-mda

Manufacturer Part Number
lmc6032-mda
Description
Cmos Dual Operational Amplifier
Manufacturer
National Semiconductor Corporation
Datasheet
© 2004 National Semiconductor Corporation
LMC6032
CMOS Dual Operational Amplifier
General Description
The LMC6032 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 ground, low input bias current, and high voltage
gain into realistic loads, such as 2 kΩ and 600Ω.
This chip is built with National’s advanced Double-Poly
Silicon-Gate CMOS process.
See the LMC6034 datasheet for a CMOS quad operational
amplifier with these same features. For higher performance
characteristics refer to the LMC662.
Features
n Specified for 2 kΩ and 600Ω loads
n High voltage gain:
Connection Diagram
126 dB
DS011135
10 Hz High-Pass Filter
8-Pin DIP/SO
Top View
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 I
n Low distortion: 0.01% at 10 kHz
n Slew rate: 1.1 V/µs
n Improved performance over TLC272
Applications
n High-impedance buffer or preamplifier
n Current-to-voltage converter
n Long-term integrator
n Sample-and-hold circuit
n Medical instrumentation
SS
= 400 µA/amplifier; independent of V
01113520
01113501
+
www.national.com
August 2000

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lmc6032-mda Summary of contents

Page 1

... LMC6032 CMOS Dual Operational Amplifier General Description The LMC6032 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 ground, low input bias current, and high voltage gain into realistic loads, such as 2 kΩ and 600Ω. ...

Page 2

... Sinking 2 − − 0.3V ± ± (Note 1) −40˚C ≤ T +85˚C 4.75V to 15.5V (Note 11) ), (Note 12) JA 101˚C/W 165˚C 5V, V Typical LMC6032I Units (Note 5) Limit (Note max 2.3 µV/˚C 0.04 pA 200 max 0.01 pA 100 max > 1 TeraΩ ...

Page 3

... V = 15V 14. kΩ to 7. 15V 13. 600Ω to 7. Sourcing Sinking 15V Sourcing Sinking 13V O (Note 10) Both Amplifiers 0. 1. 5V, V LMC6032I Units Limit (Note 6) 4.20 V 4.00 min 0.25 V 0.35 max 4.00 V 3.80 min 0.63 V 0.75 max 13.50 V 13.00 min 0.45 V 0.55 max 12.50 V 12.00 min 1.45 V 1.75 max min 21 13 ...

Page 4

... The maximum allowable power dissipation at any ambient temperature is P J(max ≤ 11.5V. For Sinking tests, 2.5V ≤ /2. Each amp excited in turn with 1 kHz to produce greater than 13V or reliability may be adversely affected 5V, V Typical LMC6032I Units (Note 5) Limit (Note 6) 1.1 0.8 V/µs 0.4 min 1.4 MHz 50 Deg ...

Page 5

Typical Performance Characteristics ± 7.5V 25˚C unless otherwise specified S A Supply Current vs Supply Voltage Output Characteristics Current Sinking Input Voltage Noise vs Frequency 01113523 Output Characteristics 01113525 01113527 5 Input Bias Current 01113524 Current ...

Page 6

Typical Performance Characteristics Open-Loop Frequency Response Non-Inverting Large Signal Pulse Response Stability vs Capacitive Load www.national.com ± 7.5V 25˚C unless otherwise specified (Continued Frequency Response 01113529 01113531 01113533 6 vs Capacitive Load 01113530 Stability ...

Page 7

... Note 13: Avoid resistive loads of less than 500Ω, as they may cause insta- bility. Application Hints AMPLIFIER TOPOLOGY The topology chosen for the LMC6032, shown in Figure 1, is 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 integrator, to allow a larger output swing ...

Page 8

... F computed value. CAPACITIVE LOAD TOLERANCE Like many other op amps, the LMC6032 may oscillate when its applied load appears capacitive. The threshold of oscilla- tion varies both with load and circuit gain. The configuration most sensitive to oscillation is a unity-gain follower. See the Typical Performance Characteristics. The load capacitance interacts with the op amp’ ...

Page 9

... It is generally recognized that any circuit which must operate with less than 1000 pA of leakage current requires special layout of the PC board. When one wishes to take advantage of the ultra-low bias current of the LMC6032, typically less than 0.04 pA essential to have an excellent layout. Fortunately, the techniques for obtaining low leakages are quite simple ...

Page 10

Application Hints (Continued) (a) Inverting Amplifier (b) Non-Inverting Amplifier (c) Follower (d) Howland Current Pump FIGURE 6. Guard Ring Connections The designer should be aware that when it is inappropriate to lay out a PC board for the sake of ...

Page 11

... LM358 and offers greater bandwidth and input resistance over the LM358. These features will improve the performance of many existing single-supply applications. Note, however, that the supply voltage range of the LMC6032 is smaller than that of the LM358. Instrumentation Amplifier R5 R6, and ...

Page 12

... Gain = passband ripple Ordering Information Temperature Range Industrial −40˚C ≤ LMC6032IN LMC6032IM LMC6032IMX www.national.com 01113519 Gain = −46.8 Output offset voltage reduced to the level of the input offset voltage of the bottom amplifier (typically 1 mV). 01113520 Package NSC Drawing ≤ +85˚C ...

Page 13

... Physical Dimensions inches (millimeters) unless otherwise noted Small Outline Dual-In-Line Package (M) Order Number LMC6032IM, LMC6032IMX NS Package Number M08A Molded Dual-In-Line Package (N) Order Number LMC6032IN NS Package Number N08E 13 www.national.com ...

Page 14

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. For the most current product information ...

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