Zero-Drift, Single-Supply,
Rail-to-Rail Input/Output
Operational Amplifiers
a
AD8551/AD8552/AD8554
PIN CONFIGURATIONS
FEATURES
Low Offset Voltage: 1 V
8-Lead MSOP
(RM Suffix)
8-Lead SOIC
(R Suffix)
Input Offset Drift: 0.005 V/؇C
Rail-to-Rail Input and Output Swing
+5 V/+2.7 V Single-Supply Operation
High Gain, CMRR, PSRR: 130 dB
Ultralow Input Bias Current: 20 pA
Low Supply Current: 700 A/Op Amp
Overload Recovery Time: 50 s
No External Capacitors Required
NC
؊IN A
؉IN A
V؊
1
8
NC
1
2
3
4
NC
؊IN A
+IN A
V؊
8
7
6
5
NC
V+
OUT A
AD8551
V+
NC
4
5
AD8551
OUT A
NC
NC = NO CONNECT
NC = NO CONNECT
APPLICATIONS
Temperature Sensors
Pressure Sensors
Precision Current Sensing
Strain Gage Amplifiers
Medical Instrumentation
Thermocouple Amplifiers
8-Lead TSSOP
(RU Suffix)
8-Lead SOIC
(R Suffix)
1
8
5
OUT A
؊IN A
+IN A
V؊
V+
OUT B
؊IN B
+IN B
1
2
3
4
8
7
6
5
OUT A
؊IN A
+IN A
V؊
V+
AD8552
4
OUT B
؊IN B
+IN B
AD8552
GENERAL DESCRIPTION
This new family of amplifiers has ultralow offset, drift and bias
current. The AD8551, AD8552 and AD8554 are single, dual and
quad amplifiers featuring rail-to-rail input and output swings. All
are guaranteed to operate from +2.7 V to +5 V single supply.
14-Lead SOIC
(R Suffix)
14-Lead TSSOP
(RU Suffix)
The AD855x family provides the benefits previously found only
in expensive autozeroing or chopper-stabilized amplifiers. Using
Analog Devices’ new topology these new zero-drift amplifiers
combine low cost with high accuracy. No external capacitors are
required.
OUT A
؊IN A
؉IN A
V؉
؉IN B
؊IN B
OUT B
1
OUT D
؊IN D
؉IN D
V؊
؉IN C
؊IN C
OUT C
14
OUT A
OUT D
؊IN D
+IN D
V؊
1
2
3
4
5
6
7
14
13
12
11
10
9
؊IN A
+IN A
V+
AD8554
With an offset voltage of only 1 µV and drift of 0.005 µV/°C,
the AD8551 is perfectly suited for applications where error
sources cannot be tolerated. Temperature, position and pres-
sure sensors, medical equipment and strain gage amplifiers
benefit greatly from nearly zero drift over their operating
temperature range. The rail-to-rail input and output swings
provided by the AD855x family make both high-side and low-
side sensing easy.
7
8
AD8554
+IN B
؊IN B
OUT B
+IN C
؊IN C
OUT C
8
The AD855x family is specified for the extended industrial/
automotive (–40°C to +125°C) temperature range. The AD8551
single is available in 8-lead MSOP and narrow 8-lead SOIC
packages. The AD8552 dual amplifier is available in 8-lead
narrow SO and 8-lead TSSOP surface mount packages. The
AD8554 quad is available in narrow 14-lead SOIC and 14-lead
TSSOP packages.
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
World Wide Web Site: http://www.analog.com
© Analog Devices, Inc., 1999
ADI [ ADI ]
