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INA103 Datasheet, PDF (1/12 Pages) Burr-Brown (TI) – Low Noise, Low Distortion INSTRUMENTATION AMPLIFIER | |||
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INA103
INA103
INA103
Low Noise, Low Distortion
INSTRUMENTATION AMPLIFIER
FEATURES
q LOW NOISE: 1nV/âHz
q LOW THD+N: 0.0009% at 1kHz, G = 100
q HIGH GBW: 100MHz at G = 1000
q WIDE SUPPLY RANGE: ±9V to ±25V
q HIGH CMRR: >100dB
q BUILT-IN GAIN SETTING RESISTORS:
G = 1, 100
q UPGRADES AD625
APPLICATIONS
q HIGH QUALITY MICROPHONE PREAMPS
(REPLACES TRANSFORMERS)
q MOVING-COIL PREAMPLIFIERS
q DIFFERENTIAL RECEIVERS
q AMPLIFICATION OF SIGNALS FROM:
Strain Gages (Weigh Scale Applications)
Thermocouples
Bridge Transducers
DESCRIPTION
The INA103 is a very low noise, low distortion mono-
lithic instrumentation amplifier. Its current-feedback
circuitry achieves very wide bandwidth and excellent
dynamic response. It is ideal for low-level audio
signals such as balanced low-impedance microphones.
The INA103 provides near-theoretical limit noise per-
formance for 200⦠source impedances. Many indus-
trial applications also benefit from its low noise and
wide bandwidth.
Unique distortion cancellation circuitry reduces dis-
tortion to extremely low levels, even in high gain. Its
balanced input, low noise and low distortion provide
superior performance compared to transformer-coupled
microphone amplifiers used in professional audio
equipment.
The INA103âs wide supply voltage (±9 to ±25V) and
high output current drive allow its use in high-level
audio stages as well. A copper lead frame in the plastic
DIP assures excellent thermal performance.
The INA103 is available in 16-pin plastic DIP and
SOL-16 surface-mount packages. Commercial and In-
dustrial temperature range models are available.
Offset Offset
âGain Drive Null Null
12
3
4
âInput 16 +
6kâ¦
A1
âGain Sense 15 â
3kâ¦
âRG 13
60.6â¦
G = 100 14
3kâ¦
+RG 6
+Gain Sense 2 â
6kâ¦
A2
+Input 1 +
6kâ¦
11 Sense
â
A3
10 Output
+
6kâ¦
7 Ref
5
9
8
+Gain Drive V+ Vâ
International Airport Industrial Park ⢠Mailing Address: PO Box 11400, Tucson, AZ 85734 ⢠Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 ⢠Tel: (520) 746-1111 ⢠Twx: 910-952-1111
Internet: http://www.burr-brown.com/ ⢠FAXLine: (800) 548-6133 (US/Canada Only) ⢠Cable: BBRCORP ⢠Telex: 066-6491 ⢠FAX: (520) 889-1510 ⢠Immediate Product Info: (800) 548-6132
©1990 Burr-Brown Corporation
PDS-11016H
®
INA103 Printed in U.S.A. March, 1998
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