Datasheet AD8541, AD8542, AD8544 (Analog Devices)

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CMOS Rail-to-Rail General-Purpose Amplifiers AD8541 /AD8542/ AD8544 FEATURES PIN CONFIGURATIONS Single-supply operation: 2.7 V to 5.5 V Low supply current: 45 μA/amplifier AD8541 Wide bandwidth: 1 MHz OUT A 1 5 V+ No phase reversal V– 2 Low input currents: 4 pA +IN A
01
3 4 –IN A
0
Unity gain stable
35- 09 0
Rail-to-rail input and output
Figure 1. 5-Lead SC70 and 5-Lead SOT-23
Qualified for automotive applications
(KS and RJ Suffixes)
APPLICATIONS ASIC input or output amplifiers NC 1 8 NC AD8541 Sensor interfaces –IN A 2 7 V+ Piezoelectric transducer amplifiers +IN A 3 6 OUT A Medical instrumentation V– 4 5 NC
2
Mobile communications
00 5- 93
Audio outputs NC = NO CONNECT
00
Portable systems
Figure 2. 8-Lead SOIC (R Suffix)
GENERAL DESCRIPTION
The AD8541/AD8542/AD8544 are single, dual, and quad rail-
OUT A 1 AD8542 8 V+
to-rail input and output, single-supply amplifiers featuring very
–IN A 2 7 OUT B
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
+IN A 3 6 –IN B
parts provide 1 MHz bandwidth at a low current consumption 3
V– 4 5 +IN B
00 of 45 μA per amplifier. 35- 09 0 Very low input bias currents enable the AD8541/AD8542/AD8544 Figure 3. 8-Lead SOIC, 8-Lead MSOP, and 8-Lead TSSOP (R, RM, and RU Suffixes) to be used for integrators, photodiode amplifiers, piezoelectric sensors, and other applications with high source impedance. The supply current is only 45 μA per amplifier, ideal for battery operation.
OUT A 1 14 OUT D
Rail-to-rail inputs and outputs are useful to designers buffering
–IN A 2 13 –IN D
ASICs in single-supply systems. The AD8541/AD8542/AD8544
+IN A 3 12 +IN D
are optimized to maintain high gains at lower supply voltages,
AD8544 V+ 4 11 V–
making them useful for active filters and gain stages.
+IN B 5 10 +IN C
The AD8541/AD8542/AD8544 are specified over the extended industrial temperature range (–40°C to +125°C). The AD8541
–IN B 6 9 –IN C
is available in 5-lead SOT-23, 5-lead SC70, and 8-lead SOIC 4
OUT B 7 8 OUT C
-00 packages. The AD8542 is available in 8-lead SOIC, 8-lead MSOP, 35 09 0 and 8-lead TSSOP surface-mount packages. The AD8544 is Figure 4. 14-Lead SOIC and 14-Lead TSSOP available in 14-lead narrow SOIC and 14-lead TSSOP surface- (R and RU Suffixes) mount packages. All MSOP, SC70, and SOT versions are available in tape and reel only. See the Ordering Guide for automotive models.
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Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION PIN CONFIGURATIONS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ELECTRICAL CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION NOTES ON THE AD854X AMPLIFIERS Lower Supply Current for 1 MHz Gain Bandwidth Higher Output Current Better Performance at Lower Voltages APPLICATIONS NOTCH FILTER COMPARATOR FUNCTION PHOTODIODE APPLICATION OUTLINE DIMENSIONS ORDERING GUIDE AUTOMOTIVE PRODUCTS