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AD8622ARMZ Datasheet PDF : 20 Pages
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Data Sheet
FEATURES
Very low offset voltage
125 μV maximum
Supply current: 215 μA/amp typical
Input bias current: 200 pA maximum
Low input offset voltage drift: 1.2 μV/°C maximum
Very low voltage noise: 11 nV/√Hz
Operating temperature: −40°C to +125°C
Rail-to-rail output swing
Unity gain stable
±2.5 V to ±15 V operation
APPLICATIONS
Portable precision instrumentation
Laser diode control loops
Strain gage amplifiers
Medical instrumentation
Thermocouple amplifiers
GENERAL DESCRIPTION
The AD8622/AD8624 are dual and quad precision rail-to-rail
output operational amplifiers with low supply currents of only
350 μA/amplifier maximum over temperature and supply voltages.
The AD8622/AD8624 also has an input bias current cancellation
circuitry that provides a very low input bias current over the full
operating temperature.
With a typical offset voltage of only 10 μV, offset drift of 0.5 μV/°C,
and noise of only 0.2 μV p-p (0.1 Hz to 10 Hz), they are perfectly
suited for applications where large error sources cannot be
tolerated. Many systems can take advantage of the low noise,
dc precision, and rail-to-rail output swing provided by the
AD8622/AD8624 to maximize the signal-to-noise ratio and
dynamic range for low power operation. The AD8622/AD8624
are specified for the extended industrial temperature range of
−40°C to +125°C. The AD8622 is available in lead-free 8-lead
SOIC and MSOP packages, while the AD8624 is available in
lead-free 14-lead TSSOP and 16-lead LFCSP packages.
Low Power, Precision
Rail-to-Rail Output Op Amp
AD8622/AD8624
PIN CONFIGURATIONS
OUT A 1
8 V+
–IN A 2 AD8622 7 OUT B
+IN A 3 TOP VIEW 6 –IN B
V– 4 (Not to Scale) 5 +IN B
Figure 1. 8-Lead Narrow-Body SOIC
OUT A 1
–IN A 2
+IN A 3
V– 4
AD8622
TOP VIEW
(Not to Scale)
8 V+
7 OUT B
6 –IN B
5 +IN B
Figure 2. 8-Lead MSOP
OUT A 1
14 OUT D
–IN A 2
13 –IN D
+IN A 3
V+ 4
+IN B 5
AD8624
TOP VIEW
(Not to Scale)
12 +IN D
11 V–
10 +IN C
–IN B 6
9 –IN C
OUT B 7
8 OUT C
Figure 3. 14-Lead TSSOP
–IN A 1
+IN A 2
V+ 3
+IN B 4
AD8624
TOP VIEW
(Not to Scale)
12 –IN D
11 +IN D
10 V–
9 +IN C
NOTES
1. NC = NO CONNECT.
2. IT IS RECOMMENDED THAT THE EXPOSED
PAD BE CONNECTED TO V–.
Figure 4. 16-Lead LFCSP
Table 1. Low Power Op Amps
Supply 40 V
36 V
Single OP97 OP777
OP1177
Dual
OP297 OP727
OP2177
Quad
OP497 OP747
OP4177
12 V to 18 V 6 V
AD8663
AD8667
ADA4692-2
AD8669
ADA4692-4
Rev. D
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