AM447 datasheet(1/6 Pages) ETC

номер детали	AM447

подробное описание детали	High Precision Instrumentation Amplifier

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High Precision Instrumentation Amplifier

AM447

analog microelectronics

April 2000

Analog Microelectronics GmbH

Phone:

+49 (0)6131/91 073 – 0

1/6

An der Fahrt 13, D – 55124 Mainz

Fax:

+49 (0)6131/91 073 – 30

Rev. 2.1

Internet: www.analogmicro.de

E–Mail:

info@analogmicro.de

FEATURES

• Very Low Offset Voltage: < 25µV

• Low Input Bias Current: ≤≤≤≤ 5nA

• High Input Sensitivity

• High CMRR: > 90dB min

• Wide Operating Temperature Range:

–40°C...+140°C

• Adjustable Rail–to–Rail Voltage Out-

put Stage: 0.5...4.5V

• Single Supply Device (ratiometric)

• Integrated Source and Sink Capabil-

ity:

±±±±2mA

• Low Noise Behaviour

APPLICATIONS

• Small Signal (Bridge) Amplifier

Low Pressure Sensors

Automotive Applications

DMS Interface

Interface for Ceramic Sensors

• High Precision Amplifier

Medical Instrumentation

Data Acquisition

GENERAL DESCRIPTION

The AM447 is a high precision amplifier, de-

signed for amplification of sensor bridge sig-

nals up to 35mV full scale. The single supply

circuit consists of a high precision instrumen-

tation amplifier (IA) and an integrated ra-

tiometric output stage. Input offset voltages

less than ±25

µV (±1µV/°C) are adjustable by

only two externally trimmable resistors. The

monitoring of the amplified signal is possible

at the output of the IA and makes the adjust-

ment easier. With the externally adjustable

gain of the output stage, the AM447 can be

used for different signal sources. The 2mA

sink and source capability makes it ideal for

high precision applications specially in the

field of automotive sensors.

DELIVERY

• DIL16 packages (samples, small quantities)

• SO16(n) packages

• Dice on 5“ blue foil

BLOCK DIAGRAM

1k

4

AM447

IA

Output

Stage

10

11

6

7

14

12

5

8

3

OC2

OC1

IN-

IN+

VCC

OUT

GAIN

GND

IAOUT

VREF

VREFIN

RSET

12

VSET

9

V

CC

19k

Figure 1

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Analog Devices	AD624	691Kb / 15P	Precision Instrumentation Amplifier REV.C
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Texas Instruments	INA114	758Kb / 17P	Precision INSTRUMENTATION AMPLIFIER
Analog Devices	AD524	519Kb / 29P	Precision Instrumentation Amplifier Rev. F
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