®
INA
103
INA103
INA
103
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.
–Gain Drive
12
–Input 16
–Gain Sense 15
–R
G
13
60.6Ω
G = 100 14
+R
G
+Gain Sense
+Input
6
2
1
–
A
2
+
6kΩ
3kΩ
+
A
1
–
3kΩ
6kΩ
Offset Offset
Null
Null
3
4
6kΩ
11 Sense
–
+
A
3
10
Output
6kΩ
7
Ref
5
+Gain Drive
9
V+
8
V–
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-1016H
1
Printed in U.S.A. March, 1998
INA103
SBOS003
BURR-BROWN [ BURR-BROWN CORPORATION ]
