Quad Micropower CMOS Operational Amplifier
Description
LMC6462, LMC6464
www.
ti.
com
SNOS725D – MAY 1999 – REVISED MARCH 2013
LMC6462 Dual/LMC6464 Quad Micropower, Rail-to-Rail Input and Output CMOS Operational Amplifier
Check for Samples: LMC6462, LMC6464
FEATURES
1
•2 (Typical Unless Otherwise Noted) • Ultra Low Supply Current 20 μA/Amplifier • Ensured Characteristics at 3V and 5V • Rail-to-Rail Input Common-Mode Voltage
Range • Rail-to-Rail Output Swing
– (within 10 mV of rail, VS = 5V and RL = 25 kΩ)
• Low Input Current 150 fA • Low Input Offset Voltage 0.
25 mV
APPLICATIONS
• Battery Operated Circuits • Transducer Interface Circuits • Portable Communication Devices • Medical Applications • Battery Monitoring
DESCRIPTION
The LMC6462/4 is a micropower version of the popular LMC6482/4, combining Rail-to-Rail Input and Output Range with very low power consumption.
The LMC6462/4 provides an input common-mode voltage range that exceeds both rails.
The rail-to-rail output swing of the amplifier, ensured for loads down to 25 kΩ, assures maximum dynamic signal range.
This rail-to-rail performance of the amplifier, combined with its high voltage gain makes it unique among rail-to-rail amplifiers.
The LMC6462/4 is an excellent upgrade for circuits using limited commonmode range amplifiers.
The LMC6462/4, with ensured specifications at 3V and 5V, is especially well-suited for low voltage applications.
A quiescent power consumption of 60 μW per amplifier (at VS = 3V) can extend the useful life of battery operated systems.
The amplifier's 150 fA input current, low offset voltage of 0.
25 mV, and 85 dB CMRR maintain accuracy in battery-powered systems.
Figure 1.
8-Pin PDIP/SOIC – Top View (See Package Number P or D)
Figure 2.
14-Pin PDIP/SOIC – Top View (See Package Number NFF0014A or D)
191:
10: Gain Trim
9.
95k
10k, 0.
1%
10k, 0.
1%
50:
CMRR Trim
A1
VCM + 1/2VD +
10k, 0.
1%
VCM - 1/2VD
A2
+
VOUT = 100VD
Figure 3.
Low-Power Two-Op-Amp Instrumentation Amplifier
1
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