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MFG:ADI D/C:09
Part Number: AD629
MFG: ADI
D/C: 09
Description: The AD629 is a difference amplifier with a very high input common-mode voltage range. It is a precision device that ...
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AD629
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DataSheet
General Description
AD629 General Description
The AD629 is a difference amplifier with a very high input common-mode voltage range. It is a precision device that allows the user to accurately measure differential signals in the presence of high common-mode voltages up to ±270 V.
The AD629 can replace costly isolation amplifiers in applications that do not require galvanic isolation. The device will operate over a ±270 V common-mode voltage range and has inputs that are protected from common-mode or differential mode transients up to ±500 V.
The AD629 has low offset, low offset drift, low gain error drift, as well as low common-mode rejection drift, and excellent CMRR over a wide frequency range.
The AD629 is available in low-cost, plastic 8-lead DIP and SOIC packages. For all packages and grades, performance is guaranteed over the entire industrial temperature range from 40°C to +85°C.
AD629 Maximum Ratings
Supply Voltage VS . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . ±18 V
Internal Power Dissipation2
DIP (N) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . See Derating Curves
SOIC (R) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Derating Curves
Input Voltage Range, Continuous . . . . . . . . . . . . . . . . . . . . . ±300 V
Common-Mode and Differential, 10 sec . . . . . . . . . . . .. . . . . . ±500 V
Output Short Circuit Duration . . . . . . . . . . . . . . . . . . . . . . . . Indefinite
Pin 1, Pin 5 . . . . . . . . . . . . . . . . . . . . . . . VS 0.3 V to +VS + 0.3 V
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 150°C
Operating Temperature Range . . . . . . . . . . . . . . .55°C to +125°C
Storage Temperature Range . . . . . . . . . . . . . . . . 65°C to +150°C
Lead Temperature Range (Soldering 60 sec) . . . . . . . . . ... . . . 300°C
Internal Power Dissipation2
DIP (N) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . See Derating Curves
SOIC (R) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Derating Curves
Input Voltage Range, Continuous . . . . . . . . . . . . . . . . . . . . . ±300 V
Common-Mode and Differential, 10 sec . . . . . . . . . . . .. . . . . . ±500 V
Output Short Circuit Duration . . . . . . . . . . . . . . . . . . . . . . . . Indefinite
Pin 1, Pin 5 . . . . . . . . . . . . . . . . . . . . . . . VS 0.3 V to +VS + 0.3 V
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 150°C
Operating Temperature Range . . . . . . . . . . . . . . .55°C to +125°C
Storage Temperature Range . . . . . . . . . . . . . . . . 65°C to +150°C
Lead Temperature Range (Soldering 60 sec) . . . . . . . . . ... . . . 300°C
AD629 Features
Improved Replacement for:
INA117P and INA117KU
270 V Common-Mode Voltage Range
Input Protection to:
±500 V Common Mode
±500 V Differential
Wide Power Supply Range (2.5 V to 18 V)
±10 V Output Swing on 12 V Supply
1 mA Max Power Supply Current
HIGH ACCURACY DC PERFORMANCE
3 ppm Max Gain Nonlinearity
20 V/C Max Offset Drift (AD629A)
10 V/C Max Offset Drift (AD629B)
10 ppm/C Max Gain Drift
EXCELLENT AC SPECIFICATIONS
77 dB Min CMRR @ 500 Hz (AD629A)
86 dB Min CMRR @ 500 Hz (AD629B)
500 kHz Bandwidth
AD629 Typical Application
High Voltage Current Sensing
Battery Cell Voltage Monitor
Power Supply Current Monitor
Motor Control
Isolation
Battery Cell Voltage Monitor
Power Supply Current Monitor
Motor Control
Isolation
AD629 Connection Diagram
AD629
PDF/DataSheet Download
- Datasheet: AD629
- File Size: 309333 KB
- Manufacturer: AD [Analog Devices]
- Click here to Download
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AD629 Relative Products
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