AD8659ARZ Datasheet, PDF (1/24 Pages) Analog Devices – 22 mu A, RRIO, CMOS,18 V Operational Amplifiers

Data Sheet
FEATURES
Micropower at high voltage (18 V): 22 μA maximum
Low offset voltage: 350 µV maximum
Low input bias current: 20 pA maximum
Gain bandwidth product: 230 kHz at A_V = 100 typical
Unity-gain crossover: 230 kHz
−3 dB closed-loop bandwidth: 305 kHz
Single-supply operation: 2.7 V to 18 V
Dual-supply operation: ±1.35 V to ±9 V
Unity-gain stable
Excellent electromagnetic interference immunity
APPLICATIONS
Portable operating systems
Current monitors
4 mA to 20 mA loop drivers
Buffer/level shifting
Multipole filters
Remote/wireless sensors
Low power transimpedance amplifiers
GENERAL DESCRIPTION
The AD8657/AD8659 are dual and quad micropower, precision,
rail-to-rail input/output amplifiers optimized for low power and
wide operating supply voltage range applications.
The AD8657/AD8659 operate from 2.7 V to 18 V with a typical
quiescent supply current of 18 μA. The devices use the Analog
Devices, Inc., patented DigiTrim® trimming technique, which
achieves low offset voltage. The AD8657/AD8659 also have
high immunity to electromagnetic interference.
The combination of low supply current, low offset voltage, very
low input bias current, wide supply range, and rail-to-rail input
and output make the AD8657/AD8659 ideal for current
monitoring in process and motor control applications. The
combination of precision specifications makes these devices
ideal for dc gain and buffering of sensor front ends or high
impedance input sources in wireless or remote sensors or
transmitters.
The AD8657/AD8659 are specified over the extended industrial
temperature range (−40°C to +125°C). The AD8657 is available in
an 8-lead MSOP package and an 8-lead LFCSP package; the
AD8659 is available in a 14-lead SOIC package and 16-lead
LFCSP package.
Rev. B
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22 µA, RRIO, CMOS,18 V
Operational Amplifiers
AD8657/AD8659
PIN CONNECTION DIAGRAMS
OUT A 1
–IN A 2
+IN A 3
V– 4
AD8657
TOP VIEW
(Not to Scale)
8 V+
7 OUT B
6 –IN B
5 +IN B
Figure 1. AD8657 Pin Configuration, 8-Lead MSOP
OUT A 1
–IN A 2
+IN A 3
V– 4
AD8657
TOP VIEW
(Not to Scale)
8 V+
7 OUT B
6 –IN B
5 +IN B
NOTES
1. CONNECT THE EXPOSED PAD TO V– OR
LEAVE IT UNCONNECTED.
Figure 2. AD8657 Pin Configuration, 8-Lead LFCSP
Note: For AD8659 pin connections and for more information
about the pin connections for these products, see the Pin
Configurations and Function Descriptions section.
60
50
V_SY = 2.7V
V_SY = 18V
40
30
20
10
0
–50
–25
0
25
50
75
TEMPERATURE (°C)
100
125
Figure 3. AD8657, Supply Current vs. Temperature
Table 1. Precision Micropower Op Amps (<250 µA)
Supply Voltage 5 V
12 V to 16 V 36 V
Single
AD8538
OP196
AD8603
ADA4051-1
Dual
AD8539
AD8657
AD8622
AD8607
ADA4091-2
ADA4051-2
ADA4096-2
Quad
AD8609
AD8659
AD8624
ADA4091-4
ADA4096-4
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