INA104 Burr-Brown Corporation, INA104 Datasheet

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INA104

Manufacturer Part Number
INA104
Description
Very-High Accuracy INSTRUMENTATION AMPLIFIER
Manufacturer
Burr-Brown Corporation
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
INA104AM
Quantity:
200
Part Number:
INA104HP
Manufacturer:
BB/TI
Quantity:
131
Part Number:
INA104SM
Manufacturer:
BB
Quantity:
5 510
FEATURES
APPLICATIONS
©
International Airport Industrial Park
Tel: (520) 746-1111
1983 Burr-Brown Corporation
VERSATILE FOUR OP AMP DESIGN
ULTRA-LOW VOLTAGE DRIFT:
0.25 V/ C, max
LOW OFFSET VOLTAGE: 25 V, max
LOW NONLINEARITY: 0.002%, max
LOW NOISE: 13nV/ Hz at f
HIGH CMR: 106dB at 60Hz, min
HIGH INPUT IMPEDANCE: 10
LOW COST
AMPLIFICATION OF SIGNALS FROM
SOURCES SUCH AS:
Strain Gages
Thermocouples
RTDs
REMOTE TRANSDUCER AMPLIFIER
LOW LEVEL SIGNAL CONDITIONER
MEDICAL INSTRUMENTATION
CMV Sense
Gain Sense
Gain Sense
Gain
Gain
–In
+In
Twx: 910-952-1111
INSTRUMENTATION AMPLIFIER
14
18
17
4
5
1
2
®
20k
20k
Adjust
Offset
Mailing Address: PO Box 11400
16
Very-High Accuracy
A
A
1
2
Offset
Adjust
0
Cable: BBRCORP
= 1kHz
10
15
26k
26k
10k
10k
+V
CC
13
Telex: 066-6491
PDS-488D
10k
10k
–V
A
Tucson, AZ 85734
3
CC
3
Output
Common
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).
A
3
8
6
Inverting Input
FAX: (520) 889-1510
A
• Street Address: 6730 S. Tucson Blvd.
4
9
Non-Inverting Input
10k
A
4
7
5k
10k
A
4
Immediate Product Info: (800) 548-6132
12
11
10
Printed in U.S.A. May, 1995
A
A
Feedback
Resistor
4
4
Junction
Output
INA104
Summing
• Tucson, AZ 85706

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INA104 Summary of contents

Page 1

... 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. 10 Burr-Brown’s compatible thin-film resistors and laser- trimming techniques are used for minimizing offset voltage and temperature drift ...

Page 2

... Small Signal, 1% Flatness 100 G = 1000 200 Full Power 100 6.4 Slew Rate 100 0.2 0.4 Settling Time (0.1 100 G = 1000 350 Settling Time (0.01 100 G = 1000 500 ® INA104 INA104AM INA104BM, SM MAX MIN TYP 1000 * ) * G (0.15 –0.1/ 100 * 22 110 * 22 110 * – ...

Page 3

... JC 130 JA * Specifications same as for INA104AM. NOTES: (1) Typically the tolerance of R will be the major source of gain error. (2) Not including the TCR The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change without notice ...

Page 4

... PACKAGE INFORMATION Summing Junction MODEL Feedback Resistor INA104AM Output INA104BM INA104CM INA104SM NOTE: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix D of Burr-Brown IC Data Book. ELECTROSTATIC CC DISCHARGE SENSITIVITY This integrated circuit can be damaged by ESD. Burr-Brown recommends that all integrated circuits be handled with ap- propriate precautions ...

Page 5

... CMR vs SOURCE IMBALANCE G = 100 - 1000 G = 100 - 1000 60Hz Source Resistance Imbalance (k GAIN vs FREQUENCY G = 1000 G = 100 Error 100 1k 10k 100k Frequency (Hz) GAIN ERROR vs FREQUENCY G = 1000 G = 100 100 1k 10k Frequency (Hz) INA104 100 1M 100k ® ...

Page 6

... Time (Minutes) STEP RESPONSE + 1000 +5 0 –5 –10 0 100 200 300 Time (µs) OUTPUT NOISE vs GAIN Gain (V/V) ® INA104 (CONT) ±10 ±9 ±8 ±7 ± 1000 320 100 32 400 500 600 1000 100 1000k ...

Page 7

... THE INA104 A simplified schematic of the INA104 is shown on the front pages of this data sheet three-amplifier device which provides all the desirable characteristics of a premium per- formance instrumentation amplifier. In addition, it has fea- tures not normally found on integrated circuit instrumenta- tion amplifiers ...

Page 8

... The op amp is used to maintain a low resistance (<0.1 ) from pin 6 to Common to avoid CMR degradation. BASIC CIRCUIT CONNECTION The basic circuit connection for the INA104 is shown in Figure 1. The output voltage is a function of the differential input voltage times the gain. Figure 1 does not include additional internal op amp A ...

Page 9

... Note, however, that accuracy can degrade due to high amplification of offset, drift, and noise errors. Output offsetting (“zero suppression” or “zero elevation”) may be more easily accomplished with the INA104 than with most other IC instrumentation amplifiers as shown in Figure 4. The use of the extra internal op amp, A that CMR of the instrumentation amp is not disturbed, and that a convenient value of variable resistor can be used ...

Page 10

... +In 3 – Noise –In (60Hz Hum) Shield Noise (1) +In (60Hz Hum) 3 – Optional Offset Adjust 100k (40k – INA104 + E OUT – INA104 E OUT1 OUT2 ...

Page 11

... G = 1000 –In INA104 8 5k (1) E 1Vp-p OUT 6 CMV To isolation 7 Sense stage –15V (from isolated 1M - 10M power supply with bypassing) Isolation Amplifier (1) E OUT +15V +15V Output –15V Common INA104 ® ...

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