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AD8200

High Common-Mode Voltage, Single-Supply

Difference Amplifier

FEATURES

High Common-Mode Voltage Range –2 V to +24 V at a

5 V Supply Voltage

Operating Temperature Range

Die: –40 C to +150 C

Supply Voltage Range: 4.7 V to 12 V

Low-Pass Filter (One Pole or Two Pole)

EXCELLENT AC AND DC PERFORMANCE

1 mV Voltage Offset

10 ppm/ C Typ Gain Drift

80 dB CMRR Min DC to 10 kHz

PLATFORMS

Transmission Control

Diesel Injection Control

Engine Management

Adaptive Suspension Control

Vehicle Dynamics Control

FUNCTIONAL BLOCK DIAGRAM

SOIC (R) Package

Die Form

A1

+IN

–IN

200k

200k

100k

A2

+IN

–IN

G = 10

G = 2

AD8200

10k

10k

+IN

–IN

OUT

GND

NC

A1

A2

NC = NO CONNECT

GENERAL DESCRIPTION

The AD8200 is a single-supply difference amplifier for amplifying

and low-pass filtering small differential voltages in the presence of

a large common-mode voltage. The input CMV range extends

from –2 V to +24 V at a typical supply voltage of 5 V.

The AD8200 is offered in die and packaged form. Both package

options are specified over wide temperature ranges, making the

AD8200 well suited for use in many automotive platforms. The

SOIC package is specified over a temperature range of –40

°C to

+125

°C. The die is specified from –40°C to +150°C.

Automotive platforms demand precision components for better

system control. The AD8200 provides excellent ac and dc per-

formance that keeps errors to a minimum in the user’s system.

Typical offset and gain drift in the SOIC package are 6

µV/°C

and 10 ppm/

°C, respectively. The device also delivers a mini-

mum CMRR of 80 dB from dc to 10 kHz.

The AD8200 features an externally accessible 100 k

Ω resistor at

the output of the preamp A1, which can be used for low-pass

filter applications and for establishing gains other than 20.

GND

NC

–IN

+IN

A1

A2

OUT

AD8200

5V

OUTPUT

INDUCTIVE

LOAD

POWER

DEVICE

4 TERM

SHUNT

CLAMP

DIODE

BATTERY

14V

COMMON

NC = NO CONNECT

Figure 1. High Line Current Sensor

5V

OUTPUT

INDUCTIVE

LOAD

4 TERM

SHUNT

CLAMP

DIODE

BATTERY

14V

POWER

DEVICE

COMMON

NC = NO CONNECT

GND

NC

–IN

+IN

A1

A2

OUT

AD8200

Figure 2. Low Line Current Sensor