Datasheet AD8622, AD8624 (Analog Devices)

Low Power, Precision Rail-to-Rail Output Op Amp Data Sheet AD8622/ AD8624 FEATURES PIN CONFIGURATIONS Very low offset voltage OUT A 1 8 V+ 125 μV maximum –IN A 2 AD8622 7 OUT B Supply current: 215 μA/amp typical +IN A 3 TOP VIEW 6 –IN B
1 0
(Not to Scale)
0 7-
Input bias current: 200 pA maximum V– 4 5 +IN B
52 07
Low input offset voltage drift: 1.2 μV/°C maximum
Figure 1. 8-Lead Narrow-Body SOIC
Very low voltage noise: 11 nV/√Hz Operating temperature: −40°C to +125°C OUT A 1 8 V+ –IN A AD8622 2 7 OUT B Rail-to-rail output swing TOP VIEW +IN A 3 6 –IN B (Not to Scale)
2
Unity gain stable
00
V– 4 5 +IN B
7-
±2.5 V to ±15 V operation
752 0 Figure 2. 8-Lead MSOP
APPLICATIONS OUT A 1 14 OUT D Portable precision instrumentation –IN A 2 13 –IN D Laser diode control loops +IN A 3 AD8624 12 +IN D Strain gage amplifiers TOP VIEW V+ 4 11 V– Medical instrumentation (Not to Scale) +IN B 5 10 +IN C Thermocouple amplifiers –IN B 6 9 –IN C
67
OUT B 7 8 OUT C
07-
GENERAL DESCRIPTION
52 07 Figure 3. 14-Lead TSSOP The AD8622/AD8624 are dual and quad precision rail-to-rail
A D
output operational amplifiers with low supply currents of only
T T C U U C N O O N
350 μA/amplifier maximum over temperature and supply voltages.
6 5 4 3 1 1 1 1
The AD8622/AD8624 also has an input bias current cancellation circuitry that provides a very low input bias current over the full
–IN A 1 12 –IN D +IN A 2 AD8624 11 +IN D
operating temperature.
V+ 3 TOP VIEW 10 V– (Not to Scale)
With a typical offset voltage of only 10 μV, offset drift of 0.5 μV/°C,
+IN B 4 9 +IN C
and noise of only 0.2 μV p-p (0.1 Hz to 10 Hz), they are perfectly
5 6 7 8
suited for applications where large error sources cannot be
B B C C N T T N
tolerated. Many systems can take advantage of the low noise,
I U I – U – O O
dc precision, and rail-to-rail output swing provided by the
NOTES
68
1. NC = NO CONNECT.
0 AD8622/AD8624 to maximize the signal-to-noise ratio and 7-
2. IT IS RECOMMENDED THAT THE EXPOSED
52
PAD BE CONNECTED TO V–.
07 dynamic range for low power operation. The AD8622/AD8624 Figure 4. 16-Lead LFCSP 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
Table 1. Low Power Op Amps
lead-free 14-lead TSSOP and 16-lead LFCSP packages.
Supply 40 V 36 V 12 V to 18 V 6 V
Single OP97 OP777 AD8663 OP1177 Dual OP297 OP727 AD8667 ADA4692-2 OP2177 Quad OP497 OP747 AD8669 ADA4692-4 OP4177
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Document Outline Features Applications General Description Pin Configurations Table of Contents Revision History Specifications Electrical Characteristics—±2.5 V Operation Electrical Characteristics—±15 V Operation Absolute Maximum Ratings Thermal Resistance ESD Caution Typical Performance Characteristics Applications Information Input Protection Phase Reversal Micropower Instrumentation Amplifier Hall Sensor Signal Conditioning Simplified Schematic Outline Dimensions Ordering Guide