General-Purpose CMOS
Rail-to-Rail Amplifiers
a
AD8541/AD8542/AD8544
FEATURES
PIN CONFIGURATIONS
Single-Supply Operation: 2.7 V to 5.5 V
Low Supply Current: 45 A/Amplifier
Wide Bandwidth: 1 MHz
No Phase Reversal
5-Lead SC70 and SOT-23
(KS and RT Suffixes)
Low Input Currents: 4 pA
Unity Gain Stable
Rail-to-Rail Input and Output
AD8541
V+
OUT A
V؊
1
2
5
4
+IN A
3
؊IN A
APPLICATIONS
ASIC Input or Output Amplifier
Sensor Interface
Piezo Electric Transducer Amplifier
Medical Instrumentation
Mobile Communication
Audio Output
8-Lead SOIC
(R Suffix)
1
8
NC
V+
NC
AD8541
Portable Systems
2
7
–IN A
OUT A
NC
3
4
6
5
+IN A
V–
GENERAL DESCRIPTION
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.
NC = NO CONNECT
8-Lead SOIC, MSOP, and TSSOP
(R, RM, and RU Suffixes)
AD8542
OUT A
–IN A
+IN A
V–
8
7
6
5
1
2
3
4
V+
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.
OUT B
–IN B
+IN B
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.
14-Lead SOIC and TSSOP
(R and RU Suffixes)
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.
14
13
12
11
10
9
OUT D
–IN D
OUT A
–IN A
1
2
3
4
5
6
7
+IN D
V–
+IN A
V+
AD8544
+IN C
+IN B
–IN B
–IN C
8
OUT C
OUT B
REV. D
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