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AMP02_15

Description
High Accuracy Instrumentation Amplifier
File Size198KB,12 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet View All

AMP02_15 Overview

High Accuracy Instrumentation Amplifier

High Accuracy
Instrumentation Amplifier
AMP02
FEATURES
Low Offset Voltage: 100 V max
Low Drift: 2 V/ C max
Wide Gain Range: 1 to 10,000
High Common-Mode Rejection: 115 dB min
High Bandwidth (G = 1000): 200 kHz typ
Gain Equation Accuracy: 0.5% max
Single Resistor Gain Set
Input Overvoltage Protection
Low Cost
Available in Die Form
APPLICATIONS
Differential Amplifier
Strain Gage Amplifier
Thermocouple Amplifier
RTD Amplifier
Programmable Gain Instrumentation Amplifier
Medical Instrumentation
Data Acquisition Systems
FUNCTIONAL BLOCK DIAGRAM
8-Lead PDIP and CERDIP
RG
1 1
–IN
2
+IN
3
V–
4
8
RG
2
7
V+
6
OUT
5
16-Lead SOIC
NC
1
RG
1 2
NC
3
–IN
4
+IN
5
NC
6
V–
7
NC
8
16
NC
15
RG
2
14
NC
13
V+
12
SENSE
11
OUT
10
REFERENCE
9
NC
REFERENCE
NC = NO CONNECT
V+
+IN
R
G
–IN
3
1
RG
1
8
RG
2
2 +
7
6
5
4
REFERENCE
OUT
V–
V
OUT
50k
G=
=
(+IN) – (–IN)
R
G
(
)
+1
FOR SOL CONNECT SENSE TO OUTPUT
Figure 1. Basic Circuit Connections
GENERAL DESCRIPTION
The AMP02 is the first precision instrumentation amplifier
available in an 8-lead package. Gain of the AMP02 is set by a
single external resistor and can range from 1 to 10,000. No
gain set resistor is required for unity gain. The AMP02 includes
an input protection network that allows the inputs to be taken
60 V beyond either supply rail without damaging the device.
Laser trimming reduces the input offset voltage to under 100
µV.
Output offset voltage is below 4 mV, and gain accuracy is better
than 0.5% for a gain of 1000. ADI’s proprietary thin-film resis-
tor process keeps the gain temperature coefficient under 50 ppm/°C.
Due to the AMP02’s design, its bandwidth remains very high
over a wide range of gain. Slew rate is over 4 V/µs, making the
AMP02 ideal for fast data acquisition systems.
A reference pin is provided to allow the output to be referenced
to an external dc level. This pin may be used for offset correc-
tion or level shifting as required. In the 8-lead package, sense is
internally connected to the output.
For an instrumentation amplifier with the highest precision,
consult the AMP01 data sheet.
REV. E
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. 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 companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703 © Analog Devices, Inc., 2002. All rights reserved.

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