INA103_07 Datasheet, PDF (1/14 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/√Hz
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 200Ω 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 INA103’s 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
–Gain Drive Null Null
12
3
4
–Input 16 +
6kΩ
A₁
–Gain Sense 15 ^–
3kΩ
–R_G 13
60.6Ω
G = 100 14
3kΩ
+R_G 6
+Gain Sense 2 ^–
6kΩ
A₂
+Input 1 ⁺
6kΩ
11 Sense
–
A₃
10 Output
+
6kΩ
7 Ref
5
9
8
+Gain Drive V+ V–
SBOS003
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: [phone] • Twx: 910-952-1111
Internet: http://www.burr-brown.com/ • FAXLine: [phone] (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]
©_{1990 Burr-Brown Corporation}
PDS-11016H
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INA103 ^{Printed in U.S.A. March, 1998}