LM432 Dual Op Amp with On-Chip Fixed 2.5V Reference
July 2001
LM432
Dual Op Amp with On-Chip Fixed 2.5V Reference
General Description
The LM432 integrates two operational amplifiers and one
2.5V reference. The reference is based on the LMV431
adjustable shunt regulator with the output voltage adjusted
to a fixed 2.5V. The Op Amps are similar to the LM358 with
a common-mode input range that includes ground. Integrat-
ing the reference and Op Amps creates a solution for low
cost charging applications.
Features
Dual Op Amp Circuitry
(Typical for V
S
= 5V)
n
Input offset voltage
n
Input offset current
n
Input bias current
n
Common-mode input voltage range
n
Power supply current
0.6mV
1nA
3nA
0V to V
S
鈭?V
150碌A
Applications
n
Low cost charging circuitry
n
Power supplies and adapters
Reference Circuitry
n
Reference voltage
2.5V
n
Reference voltage deviation (鈭?0藲C to 85藲C)
4mV
n
Sink Current Capability
0.2mA to 10mA
Connection Diagram
8-Pin SOIC
Application Circuit
10139002
Optocoupler Driver Circuit for Power Supply Isolation
10139001
Top View
Ordering Information
Package
8-Pin SOIC
Part Number
LM432MA
LM432MAX
Package Marking
LM432MA
LM432MA
Transport Media
Rails
2.5k Unit Tape and Reel
NSC
Drawing
M08A
漏 2004 National Semiconductor Corporation
DS101390
www.national.com
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