Precision CMOS, Single-Supply, Rail-to-Rail,
Input/Output Wideband Operational Amplifiers
AD8601/AD8602/AD8604
FEATURES PIN CONFIGURATIONS
Low offset voltage: 500 V maximum
OUT A 1 5 V+
AD8601
Single-supply operation: 2.7 V to 5.5 V
TOP VIEW
V 2
Low supply current: 750 A/Amplifier
(Not to Scale)
Wide bandwidth: 8 MHz +IN 3 4 IN
Slew rate: 5 V/s
Figure 1. 5-Lead SOT-23 (RJ Suffix)
Low distortion
No phase reversal
OUT A 1 8 V+
AD8602
IN A 2 7 OUT B
Low input currents
TOP VIEW
+IN A 3 6 IN B
Unity-gain stable
(Not to Scale)
V 4 5 +IN B
Qualified for automotive applications
Figure 2. 8-Lead MSOP (RM Suffix) and 8-Lead SOIC (R-Suffix)
APPLICATIONS
OUT A 1 14 OUT D
Current sensing
IN A 2 13 IN D
Barcode scanners
+IN A 3 AD8604 12 +IN D
PA controls
TOP VIEW
V+ 4 11 V
Battery-powered instrumentation
(Not to Scale)
5
+IN B 10 +IN C
Multipole filters
6 9
IN B IN C
Sensors
7 8
OUT B OUT C
ASIC input or output amplifiers
Audio
Figure 3. 14-Lead TSSOP (RU Suffix) and 14-Lead SOIC (R Suffix)
GENERAL DESCRIPTION
OUT A 1 16 OUT D
The AD8601, AD8602, and AD8604 are single, dual, and quad
IN A 2 15 IN D
rail-to-rail, input and output, single-supply amplifiers featuring
3 14
+IN A AD8604 +IN D
very low offset voltage and wide signal bandwidth. These amplifiers TOP VIEW
4 13
V+ V
(Not to Scale)
use a new, patented trimming technique that achieves superior
5 12
+IN B +IN C
performance without laser trimming. All are fully specified to
6 11
IN B IN C
operate on a 3 V to 5 V single supply.
OUT B 7 10 OUT C
The combination of low offsets, very low input bias currents, 8 9
NC NC
and high speed make these amplifiers useful in a wide variety
NC = NO CONNECT
of applications. Filters, integrators, diode amplifiers, shunt
Figure 4. 16-Lead Shrink Small Outline QSOP (RQ Suffix)
current sensors, and high impedance sensors all benefit from
the combination of performance features. Audio and other ac The AD8601, AD8602, and AD8604 are specified over the
applications benefit from the wide bandwidth and low distortion. extended industrial (40C to +125C) temperature range. The
For the most cost-sensitive applications, the D grades offer this AD8601, single, is available in a tiny, 5-lead SOT-23 package. The
ac performance with lower dc precision at a lower price point. AD8602, dual, is available in 8-lead MSOP and 8-lead, narrow
SOIC surface-mount packages. The AD8604, quad, is available
Applications for these amplifiers include audio amplification for
in 14-lead TSSOP, 14-lead SOIC, and 16-lead QSOP packages.
portable devices, portable phone headsets, bar code scanners,
See the Ordering Guide for automotive grades.
portable instruments, cellular PA controls, and multipole filters.
The ability to swing rail-to-rail at both the input and output
enables designers to buffer CMOS ADCs, DACs, ASICs, and
other wide output swing devices in single-supply systems.
Rev.Rev. G G
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01525-001
01525-002
01525-004 01525-003AD8601/AD8602/AD8604
TABLE OF CONTENTS
Features .............................................................................................. 1 Input Overvoltage Protection ................................................... 16
Applications....................................................................................... 1 Overdrive Recovery ................................................................... 16
General Description ......................................................................... 1 Power-On Time .......................................................................... 16
Pin Configurations ........................................................................... 1 Using the AD8602 in High Source Impedance
Applications ................................................................................ 16
Revision History ............................................................................... 2
High Side and Low Side, Precision Current Monitoring ...... 16
Specifications..................................................................................... 3
Using the AD8601 in Single-Supply, Mixed Signal
Electrical Characteristics............................................................. 3
Applications ................................................................................ 17
Absolute Maximum Ratings............................................................ 5
PC100 Compliance for Computer Audio Applications ........ 17
Thermal Resistance ...................................................................... 5
SPICE Model............................................................................... 18
ESD Caution.................................................................................. 5
Outline Dimensions....................................................................... 19
Typical Performance Characteristics ............................................. 6
Ordering Guide .......................................................................... 22
Theory of Operation ...................................................................... 15
Automotive Products................................................................. 22
Rail-to-Rail Input Stage ............................................................. 15
REVISION HISTORY
1/11Rev. F to Rev. G 11/03Rev. C to Rev. D
Changes to Ordering Guide .......................................................... 22 Changes to Features ..........................................................................1
Change to Automotive Products Section .................................... 22 Changes to Ordering Guide .............................................................4
3/03Rev. B to Rev. C
5/10Rev. E to Rev. F
Changes to Features Section and General Description Changes to Features ..........................................................................1
Section................................................................................................ 1
Changes to Ordering Guide .......................................................... 22 3/03Rev. A to Rev. B
Added Automotive Products Section .......................................... 22 Change to Features............................................................................1
Change to Functional Block Diagrams...........................................1
2/10Rev. D to Rev. E Change to TPC 39 .......................................................................... 11
Add 16-Lead QSOP............................................................Universal Changes to Figures 4 and 5 ........................................................... 14
Changes to Table 3 and Table 4....................................................... 5 Changes to Equations 2 and 3................................................. 14, 15
Updated Outline Dimensions ....................................................... 19 Updated Outline Dimensions....................................................... 16
Changes to Ordering Guide .......................................................... 22
Rev. G | Page 2 of 24