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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 Cable: BBRCORP Telex: 066-6491 FAX: (520) 889-1510 Immediate Product Info: (800) 548-6132
1983 Burr-Brown Corporation
PDS-488D
Printed in U.S.A. May, 1995
INA104
APPLICATIONS
G
AMPLIFICATION OF SIGNALS FROM
SOURCES SUCH AS:
Strain Gages
Thermocouples
RTDs
G
REMOTE TRANSDUCER AMPLIFIER
G
LOW LEVEL SIGNAL CONDITIONER
G
MEDICAL INSTRUMENTATION
FEATURES
G
VERSATILE FOUR OP AMP DESIGN
G
ULTRA-LOW VOLTAGE DRIFT:
0.25
μ
V/
°
C, max
G
LOW OFFSET VOLTAGE: 25
μ
V, max
G
LOW NONLINEARITY: 0.002%, max
G
LOW NOISE: 13nV/
√
Hz at f
0
= 1kHz
G
HIGH CMR: 106dB at 60Hz, min
G
HIGH INPUT IMPEDANCE: 10
10
G
LOW COST
DESCRIPTION
The INA104 is a high accuracy, multistage, inte-
grated-circuit instrumentation amplifier designed for
signal conditioning requirements where very high per-
formance is desired.
A multiamplifier, monolithic design, which uses Burr-
Brown’s ultra-low drift, low-noise technology, pro-
vides the highest performance with maximum versatil-
ity at the lowest cost and makes the INA104 ideal for
even high volume applications.
Burr-Brown’s compatible thin-film resistors and laser-
trimming techniques are used for minimizing offset
voltage and temperature drift. This advanced tech-
nique also maximizes common-mode rejection and
gain accuracy.
The INA104 also contains a fourth operational ampli-
fier, specified separately, which can conveniently be
used for some important applications such as single
capacitor active low-pass filtering, easy output level
shifting, common-mode voltage active guard drive,
and increased gain (
x
10,000 and greater).
Very-High Accuracy
INSTRUMENTATION AMPLIFIER
A
1
A
2
A
4
A
3
26k
10k
10k
26k
10k
10k
5k
20k
20k
10k
10k
Gain
Gain Sense
–In
CMV Sense
Gain
Gain Sense
+In
2
1
16
15
13
3
6
7
5
4
17
18
14
Offset
Adjust
Offset
Adjust
+V
CC
–V
CC
A
Non-Inverting Input
Common
8
9
A
Output
A
Inverting Input
A
4
Output
Feedback
Resistor
A
4
Summing
Junction
10
11
12