LMC660CMX National Semiconductor, LMC660CMX Datasheet

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LMC660CMX

Manufacturer Part Number
LMC660CMX
Description
CMOS Quad Operational Amplifier
Manufacturer
National Semiconductor
Datasheet

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© 2006 National Semiconductor Corporation
LMC660
CMOS Quad Operational Amplifier
General Description
The LMC660 CMOS Quad operational amplifier is ideal for
operation from a single supply. It operates from +5V to
+15.5V and features rail-to-rail output swing in addition to an
input common-mode range that includes ground. Perfor-
mance limitations that have plagued CMOS amplifiers in the
past are not a problem with this design. Input V
broadband noise as well as voltage gain into realistic loads
(2 kΩ and 600Ω) are all equal to or better than widely
accepted bipolar equivalents.
This chip is built with National’s advanced Double-Poly
Silicon-Gate CMOS process.
See the LMC662 datasheet for a dual CMOS operational
amplifier with these same features.
Features
n Rail-to-rail output swing
n Specified for 2 kΩ and 600Ω loads
n High voltage gain:
Connection Diagram
14-Pin SOIC/MDIP
126 dB
DS008767
OS
00876701
, drift, and
n Low input offset voltage: 3 mV
n Low offset voltage drift: 1.3 µV/˚C
n Ultra low input bias current: 2 fA
n Input common-mode range includes V
n Operating range from +5V to +15.5V supply
n I
n Low distortion: 0.01% at 10 kHz
n Slew rate: 1.1 V/µs
Applications
n High-impedance buffer or preamplifier
n Precision current-to-voltage converter
n Long-term integrator
n Sample-and-Hold circuit
n Peak detector
n Medical instrumentation
n Industrial controls
n Automotive sensors
SS
= 375 µA/amplifier; independent of V
LMC660 Circuit Topology (Each Amplifier)
+
www.national.com
00876704
June 2006

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LMC660CMX Summary of contents

Page 1

... Specified for 2 kΩ and 600Ω loads n High voltage gain: 126 dB Connection Diagram 14-Pin SOIC/MDIP © 2006 National Semiconductor Corporation n Low input offset voltage Low offset voltage drift: 1.3 µV/˚C n Ultra low input bias current Input common-mode range includes V n Operating range from +5V to +15 ...

Page 2

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Differential Input Voltage Supply Voltage + Output Short Circuit to V − Output Short Circuit to V Lead Temperature (Soldering, 10 sec.) Storage Temp. Range ...

Page 3

DC Electrical Characteristics Unless otherwise specified, all limits guaranteed for T − 0V 1.5V 2.5V and Parameter + Output Swing kΩ ...

Page 4

... 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. Temperature Range Commercial 0˚C to +70˚C LMC660CM LMC660CMX LMC660CN 4 LMC660AI LMC660C Limit Limit (Note 4) (Note 4) ± over long term may adversely affect reliability. ...

Page 5

Typical Performance Characteristics Supply Current vs. Supply Voltage Input Bias Current Output Characteristics Current Sourcing ± 7.5V 25˚C unless otherwise specified 00876724 Output Characteristics Current Sinking 00876726 Input Voltage Noise vs. Frequency 00876728 5 ...

Page 6

Typical Performance Characteristics CMRR vs. Frequency Frequency Response vs. Capacitive Load Stability vs. Capacitive Load www.national.com ± 7.5V 25˚C unless otherwise specified. (Continued Open-Loop Frequency Response 00876730 Non-Inverting Large Signal Pulse Response 00876732 Stability ...

Page 7

Application Hints AMPLIFIER TOPOLOGY The topology chosen for the LMC660, 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 ...

Page 8

Application Hints (Continued) Note that these capacitor values are usually significant smaller than those given by the older, more conservative formula: C consists of the amplifier’s input capacitance plus any stray capacitance S from the circuit board and socket. C ...

Page 9

Application Hints (Continued) cause only 0. leakage current, or perhaps a minor (2:1) degradation of the amplifier’s performance. See Figure 6a,Figure 6b, Figure 6c for typical connections of guard rings for standard op amp configurations. If both inputs ...

Page 10

Application Hints (Continued) (Input pins are lifted out of PC board and soldered directly to components. All other pins connected to PC board.) FIGURE 7. Air Wiring BIAS CURRENT TESTING The test method of Figure 7 is appropriate for bench-testing ...

Page 11

Typical Single-Supply Applications + (V = 5.0 VDC) Additional single-supply applications ideas can be found in the LM324 datasheet. The LMC660 is pin-for-pin compatible with the LM324 and offers greater bandwidth and input resistance over the LM324. These features will ...

Page 12

Typical Single-Supply Applications ( 5.0 VDC) (Continued Bandpass Filter 2.1 Gain = −8 High-Pass Filter 0.895 Gain = 1 2 ...

Page 13

Physical Dimensions inches (millimeters) unless otherwise noted 14-Pin SOIC NS Package Number M14A 14-Pin MDIP NS Package Number N14A 13 www.national.com ...

Page 14

... BANNED SUBSTANCE COMPLIANCE National Semiconductor follows the provisions of the Product Stewardship Guide for Customers (CSP-9-111C2) and Banned Substances and Materials of Interest Specification (CSP-9-111S2) for regulatory environmental compliance. Details may be found at: www.national.com/quality/green. ...

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