a
FEATURES
Single Supply Operation: +2.7 V to +5.5 V
Low Supply Current: 45 A/Amplifier
Wide Bandwidth: 1 MHz
No Phase Reversal
Low Input Currents: 4 pA
Unity Gain Stable
Rail-to-Rail Input and Output
APPLICATIONS
ASIC Input or Output Amplifier
Sensor Interface
Piezo Electric Transducer Amplifier
Medical Instrumentation
Mobile Communication
Audio Output
Portable Systems
GENERAL DESCRIPTION
NC 1
IN A 2
+IN A 3
V
4
General Purpose CMOS
Rail-to-Rail Amplifiers
AD8541/AD8542/AD8544
PIN CONFIGURATIONS
SO-8 (R)
AD8541
8 NC
7 V+
6 OUT A
5 NC
SOT-23-5 (RT)
AD8541
OUT A 1
V
2
4
IN A
5 V+
+IN A 3
NC = NO CONNECT
SO-8 (R), RM-8, and RU-8
OUT A 1
IN A 2
+IN A 3
V
4
8 V+
SO-14 (R) and RU-14
OUT A 1
IN A 2
+IN A 3
V+ 4
+IN B 5
IN B 6
OUT B 7
14 OUT D
13
IN D
12 +IN D
11 V
10 +IN C
9
IN C
8 OUT C
AD8542
7 OUT B
6
IN B
5 +IN B
AD8544
The AD8541/AD8542/AD8544 are single, dual and quad rail-
to-rail input and output single supply amplifiers featuring very
low supply current and 1 MHz bandwidth. All are guaranteed to
operate from a +2.7 V single supply as well as a +5 V supply.
These parts provide 1 MHz bandwidth at low current consump-
tion of 45
µA
per amplifier.
Very low input bias currents enable the AD8541/AD8542/AD8544
to be used for integrators, photodiode amplifiers, piezo electric
sensors and other applications with high source impedance. Supply
current is only 45
µA
per amplifier, ideal for battery operation.
Rail-to-rail inputs and outputs are useful to designers buffering
ASICs in single supply systems. The AD8541/AD8542/AD8544
are optimized to maintain high gains at lower supply voltages,
making them useful for active filters and gain stages.
The AD8541/AD8542/AD8544 are specified over the extended
industrial (–40°C to +125°C) temperature range. The AD8541
is available in 8-lead SO and 5-lead SOT-23 packages. The
AD8542 is available in 8-lead SO, 8-lead MSOP, and 8-lead
TSSOP surface mount packages. The AD8544 is available in
14-lead narrow SO-14 and 14-lead TSSOP surface mount pack-
ages. All TSSOP, MSOP, and SOT versions are available in tape
and reel only.
REV. A
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
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2000
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