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-Purpose CMOS
Rail-to-Rail Amplifiers
AD8541/AD8542/AD8544
PIN CONFIGURATIONS
5-Lead SC70 and SOT-23
(KS and RT Suffixes)
OUT A 1
V
2
4
IN A
AD8541
5 V+
+IN A 3
8-Lead SOIC
(R Suffix)
NC 1
–IN A
+IN A
2
3
4
AD8541
8
7
6
5
NC
V+
OUT A
NC
GENERAL DESCRIPTION
V–
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 a low current consumption
of 45
mA
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. Sup-
ply current is only 45
mA
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 temperature range (–40∞C to +125∞C). The AD8541
is available in 8-lead SOIC, 5-lead SC70, and 5-lead SOT-23
packages. The AD8542 is available in 8-lead SOIC, 8-lead
MSOP, and 8-lead TSSOP surface-mount packages. The AD8544
is available in 14-lead narrow SOIC and 14-lead TSSOP surface-
mount packages. All MSOP, SC70, and SOT versions are available
in tape and reel only.
NC = NO CONNECT
8-Lead SOIC, MSOP, and TSSOP
(R, RM, and RU Suffixes)
OUT A
–IN A
+IN A
V–
1
2
3
4
AD8542
8
7
6
5
V+
OUT B
–IN B
+IN B
14-Lead SOIC and TSSOP
(R and RU Suffixes)
OUT A
–IN A
+IN A
V+
+IN B
–IN B
OUT B
1
2
3
4
5
6
7
14 OUT D
13 –IN D
12 +IN D
AD8544
11 V–
10 +IN C
9
8
–IN C
OUT C
REV. D
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reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
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Tel: 781/329-4700
Fax: 781/326-8703
© 2004 Analog Devices, Inc. All rights reserved.
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