Precision, Low Noise, CMOS, Rail-to-Rail,
Input/Output Operational Amplifiers
Data Sheet
AD8605/AD8606/AD8608
FEATURES
PIN CONFIGURATIONS
BALL A1
CORNER
Low offset voltage: 65 μV maximum
Low input bias currents: 1 pA maximum
Low noise: 8 nV/√Hz
OUTA
A1
V+
A2
OUTB
A3
Wide bandwidth: 10 MHz
High open-loop gain: 1000 V/mV
Unity gain stable
–INA
B1
–INB
B3
Single-supply operation: 2.7 V to 5.5 V
5-ball WLCSP for single (AD8605) and 8-ball WLCSP for
dual (AD8606)
+INA
C1
V–
C2
+INB
C3
OUT
V–
1
2
5
4
V+
AD8605
TOP VIEW
(Not to Scale)
AD8606
TOP VIEW
APPLICATIONS
–IN
3
+IN
(BALL SIDE DOWN)
Photodiode amplification
Battery-powered instrumentation
Multipole filters
Sensors
Barcode scanners
Audio
Figure 1. 5-Lead SOT-23 (RJ Suffix)
Figure 2. 8-Ball WLCSP (CB Suffix)
TOP VIEW
(BUMP SIDE DOWN)
1
2
3
4
5
6
7
14
OUT D
OUT A
–IN A
+IN A
V+
OUT
1
V+
5
13 –IN D
12
11
10
9
+IN D
V–
AD8608
TOP VIEW
(Not to Scale)
V–
2
GENERAL DESCRIPTION
+IN B
–IN B
OUT B
+IN C
–IN C
OUT C
+IN
3
–IN
4
The AD8605, AD8606, and AD86081 are single, dual, and quad
rail-to-rail input and output, single-supply amplifiers. They
feature very low offset voltage, low input voltage and current
noise, and wide signal bandwidth. They use the Analog Devices,
Inc. patented DigiTrim® trimming technique, which achieves
superior precision without laser trimming.
8
AD8605 ONLY
Figure 3. 5-Ball WLCSP (CB Suffix)
Figure 4. 14-Lead SOIC_N (R Suffix)
OUT A
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
1
14
–IN A
+IN A
V+
+IN B
–IN B
AD8608
TOP VIEW
(Not to Scale)
1 AD8606 8
TOP VIEW
OUT A
V+
–IN A
+IN A
V–
OUT B
–IN B
+IN B
The combination of low offsets, low noise, very low input bias
currents, and high speed makes these amplifiers useful in a
wide variety of applications. Filters, integrators, photodiode
amplifiers, and high impedance sensors all benefit from the
combination of performance features. Audio and other ac
applications benefit from the wide bandwidth and low
distortion. Applications for these amplifiers include optical
control loops, portable and loop-powered instrumentation,
and audio amplification for portable devices.
(Not to Scale)
4
5
8
7
OUT B
Figure 5. 8-Lead MSOP (RM Suffix),
8-Lead SOIC_N (R Suffix)
Figure 6. 14-Lead TSSOP (RU Suffix)
The AD8605, AD8606, and AD8608 are specified over the
extended industrial temperature range (−40°C to +125°C). e
AD8605 single is available in 5-lead SOT-23 and 5-ball WLCSP
packages. The AD8606 dual is available in an 8-lead MSOP, an
8-ball WLSCP, and a narrow SOIC surface-mounted package.
The AD8608 quad is available in a 14-lead TSSOP package and
a narrow 14-lead SOIC package. The 5-ball and 8-ball WLCSP
offer the smallest available footprint for any surface-mounted
operational amplifier. The WLCSP, SOT-23, MSOP, and TSSOP
versions are available in tape-and-reel only.
1 Protected by U.S. Patent No. 5,969,657.
Rev. N
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