INA104 Datasheet, PDF (1/11 Pages) Burr-Brown (TI) – Very-High Accuracy INSTRUMENTATION AMPLIFIER

®
INA104
Very-High Accuracy
INSTRUMENTATION AMPLIFIER
FEATURES
q VERSATILE FOUR OP AMP DESIGN
q ULTRA-LOW VOLTAGE DRIFT:
0.25µV/°C, max
q LOW OFFSET VOLTAGE: 25µV, max
q LOW NONLINEARITY: 0.002%, max
q LOW NOISE: 13nV/√ Hz at f₀ = 1kHz
q HIGH CMR: 106dB at 60Hz, min
q HIGH INPUT IMPEDANCE: 10¹⁰Ω
q LOW COST
APPLICATIONS
q AMPLIFICATION OF SIGNALS FROM
SOURCES SUCH AS:
Strain Gages
Thermocouples
RTDs
q REMOTE TRANSDUCER AMPLIFIER
q LOW LEVEL SIGNAL CONDITIONER
q MEDICAL INSTRUMENTATION
14
Gain
20kΩ
18
Gain Sense
17
A₁
–In
CMV Sense ⁴
5 ^20kΩ
Gain
1
Gain Sense
2
A₂
+In
10kΩ
26kΩ
26kΩ
10kΩ
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).
A₃
A₄
Output Inverting Input
8
9
10kΩ
10kΩ
10kΩ
12 A₄ Summing
Junction
11 Feedback
Resistor
10
A₃
A₄
A₄ Output
10kΩ
5kΩ
16
15
13
3
6
7
Offset Offset
Adjust Adjust
+V_CC
–V_CC Common
A₄
Non-Inverting Input
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 • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]
©1983 Burr-Brown Corporation
PDS-488D
Printed in U.S.A. May, 1995