ADA4661-2 Datasheet, PDF (1/32 Pages) Analog Devices – 18 V, Precision, 725 A, 4 MHz, CMOS RRIO Operational Amplifier

Data Sheet
18 V, Precision, 725 µA, 4 MHz,
CMOS RRIO Operational Amplifier
ADA4661-2
FEATURES
Low power at high voltage (18 V): 725 μA maximum
Low offset voltage
150 µV maximum at VSY/2
300 µV maximum over entire common-mode range
Low input bias current: 15 pA maximum
Gain bandwidth product: 4 MHz typical at AV = 100
Unity-gain crossover: 4 MHz typical
−3 dB closed-loop bandwidth: 2.1 MHz typical
Single-supply operation: 3 V to 18 V
Dual-supply operation: ±1.5 V to ±9 V
Unity-gain stable
APPLICATIONS
Current shunt monitors
Active filters
Portable medical equipment
Buffer/level shifting
High impedance sensor interfaces
Battery powered instrumentation
GENERAL DESCRIPTION
The ADA4661-2 is a dual, precision, rail-to-rail input/output
amplifier optimized for low power, high bandwidth, and wide
operating supply voltage range applications.
The ADA4661-2 performance is guaranteed at 3.0 V, 10 V,
and 18 V power supply voltages. It is an excellent selection for
applications that use single-ended supplies of 3.3 V, 5 V, 10 V, 12
V and 15 V, and dual supplies of ±2.5 V, ±3.3 V, and ±5 V. It
uses the Analog Devices, Inc., patented DigiTrim® trimming
technique, which achieves low offset voltage. Additionally, the
unique design architecture of the ADA4661-2 allows it to have
excellent power supply rejection, common-mode rejection, and
offset voltage when operating in the common-mode voltage
range of −VSY + 1.5 V to +VSY − 1.5 V.
The ADA4661-2 is specified over the extended industrial
temperature range (−40°C to +125°C) and is available in
8-lead MSOP and 8-lead LFCSP (3 mm × 3 mm) packages.
PIN CONNECTION DIAGRAMS
OUT A 1
–IN A 2
+IN A 3
V– 4
ADA4661-2
TOP VIEW
(Not to Scale)
8 V+
7 OUT B
6 –IN B
5 +IN B
Figure 1. 8-Lead MSOP
OUT A 1
8 V+
–IN A 2
+IN A 3
V– 4
ADA4661-2
TOP VIEW
(Not to Scale)
7 OUT B
6 –IN B
5 +IN B
NOTES
1. CONNECT THE EXPOSED PAD TO V– OR
LEAVE IT UNCONNECTED.
Figure 2. 8-Lead LFCSP
250
V_SY = 18V
200
150
100
50
0
–50
–100
–150
–200
–250
0
1.5 3.0 4.5 6.0 7.5 9.0 10.5 12.0 13.5 15.0 16.5 18.0
V_CM (V)
Figure 3. Input Offset Voltage vs. Common-Mode Voltage
Table 1. Precision Low Power Op Amps (<1 mA)
Supply Voltage 5 V
12 V to 16 V 30 V
Single
ADA4505-1 OP196
OP777
AD8500
Dual
ADA4505-2 AD8657
ADA4096-2
AD8502
OP296
OP727
AD8506
ADA4661-2 AD8682
ADA4666-2 AD8622
Quad
ADA4505-4 AD8659
ADA4096-4
AD8504
OP496
OP747
AD8508
AD8684
AD8624
Rev. 0
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