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a
AD8631/AD8632
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703 © Analog Devices, Inc., 2000
1.8 V, 5 MHz Rail-to-Rail
Low Power Operational Amplifiers
PIN CONFIGURATIONS
5-Lead SOT-23
(RT Suffix)
1
2
3
5
4 –IN A+IN A
V+OUT A
AD8631
V–
8-Lead SOIC
(R Suffix)
OUT A
–IN A
+IN A
V–
V+
OUT B
–IN B
+IN B
AD8632
18
27
36
45
8-Lead H9262SOIC
(RM Suffix)

–IN A
+IN A
V–
OUT B
–IN B
+IN B
V+1
4 5
8
AD8632
OUT A
FEATURES
Single Supply Operation: 1.8 V to 6 V
Space-Saving SOT-23, H9262SOIC Packaging
Wide Bandwidth: 5 MHz @ 5 V, 4 MHz @ 1.8 V
Low Offset Voltage: 4 mV Max, 0.8 mV typ
Rail-to-Rail Input and Output Swing
2 V/H9262s Slew Rate @ 1.8 V
Only 225 H9262A Supply Current @ 1.8 V
APPLICATIONS
Portable Communications
Portable Phones
Sensor Interface
Active Filters
PCMCIA Cards
ASIC Input Drivers
Wearable Computers
Battery-Powered Devices
New Generation Phones
Personal Digital Assistants
GENERAL DESCRIPTION
The AD8631 brings precision and bandwidth to the SOT-23-5
package at single supply voltages as low as 1.8 V and low supply
current. The small package makes it possible to place the AD8631
next to sensors, reducing external noise pickup.
The AD8631 and AD8632 are rail-to-rail input and output bipolar
amplifiers with a gain bandwidth of 4 MHz and typical voltage
offset of 0.8 mV from a 1.8 V supply. The low supply current and
the low supply voltage makes these parts ideal for battery-powered
applications. The 3 V/µs slew rate makes the AD8631/AD8632 a
good match for driving ASIC inputs, such as voice codecs.
The AD8631/AD8632 is specified over the extended industrial
(–40H11543C to +125H11543C) temperature range. The AD8631 single is
available in 5-lead SOT-23 surface-mount packages. The dual
AD8632 is available in 8-lead SOIC and µSOIC packages.