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AD629ARZ-R7 Datasheet

  • AD629ARZ-R7

  • High Common-Mode Voltage, Difference Amplifier

  • 533.54KB

  • 16頁

  • AD

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High Common-Mode Voltage,
Difference Amplifier
AD629
FEATURES
Improved replacement for: INA117P and INA117KU
鹵270 V common-mode voltage range
Input protection to
鹵500 V common mode
鹵500 V differential mode
Wide power supply range (鹵2.5 V to 鹵18 V)
鹵10 V output swing on 鹵12 V supply
1 mA maximum power supply current
HIGH ACCURACY DC PERFORMANCE
3 ppm maximum gain nonlinearity (AD629B)
20 渭V/擄C maximum offset drift (AD629A)
10 渭V/擄C maximum offset drift (AD629B)
10 ppm/擄C maximum gain drift
EXCELLENT AC SPECIFICATIONS
77 dB minimum CMRR @ 500 Hz (AD629A)
86 dB minimum CMRR @ 500 Hz (AD629B)
500 kHz bandwidth
FUNCTIONAL BLOCK DIAGRAM
REF(鈥?
1
鈥揑N
2
+IN
3
鈥揤
S
4
21.1k鈩?/div>
380k鈩?/div>
380k鈩?/div>
20k鈩?/div>
380k鈩?/div>
8
NC
7
+V
S
6
OUTPUT
5
REF(+)
00783-001
AD629
NC = NO CONNECT
Figure 1.
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 鹵270 V.
The AD629 can replace costly isolation amplifiers in
applications that do not require galvanic isolation. The device
operates over a 鹵270 V common-mode voltage range and has
inputs that are protected from common-mode or differential
mode transients up to 鹵500 V.
The AD629 has low offset, low offset drift, low gain error drift,
low common-mode rejection drift, and excellent CMRR over a
wide frequency range.
The AD629 is available in low cost, 8-lead PDIP and 8-lead
SOIC packages. For all packages and grades, performance is
guaranteed over the industrial temperature range of 鈭?0擄C to
+85擄C.
APPLICATIONS
High voltage current sensing
Battery cell voltage monitors
Power supply current monitors
Motor controls
Isolation
100
COMMON-MODE REJECTION RATIO (dB)
95
2mV/DIV
85
80
75
70
65
60
00783-002
OUTPUT ERROR (2mV/DIV)
90
55
50
20
100
1k
FREQUENCY (Hz)
10k
60V/DIV
鈥?40
鈥?20
0
120
COMMON-MODE VOLTAGE (V)
240
20k
Figure 2. Common-Mode Rejection Ratio vs. Frequency
Figure 3. Error Voltage vs. Input Common-Mode Voltage
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 漏1999-2007 Analog Devices, Inc. All rights reserved.
00783-003

AD629ARZ-R7 產(chǎn)品屬性

  • DiffAmpCalc? Overview

  • 1,000

  • 集成電路 (IC)

  • Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

  • -

  • 差分

  • 1

  • -

  • 2.1 V/µs

  • -

  • 500kHz

  • -

  • 200µV

  • 900µA

  • 25mA

  • 5 V ~ 36 V，±2.5 V ~ 18 V

  • -40°C ~ 85°C

  • 表面貼裝

  • 8-SOIC（0.154"，3.90mm 寬）

  • 8-SO

  • 帶卷 (TR)

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