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PDF INA104SM Data sheet ( Hoja de datos )
| Número de pieza | INA104SM | |
| Descripción | Very-High Accuracy INSTRUMENTATION AMPLIFIER | |
| Fabricantes | Burr-Brown Corporation | |
| Logotipo |  |
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® 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
18
Gain Sense
17
–In
20kΩ
CMV Sense 4
5 20kΩ
Gain
1
Gain Sense
2
+In
A1
A2
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
89
10kΩ
10kΩ
10kΩ
12 A4 Summing
Junction
11 Feedback
Resistor
10
A3 A4 A4 Output
10kΩ
5kΩ
16 15
13
36
7
Offset Offset
Adjust Adjust
+VCC
–VCC 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: (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
1 page  
TYPICAL PERFORMANCE CURVES
At TA = +25°C, VCC = 15V, and in circuit of Figure 1, unless otherwise specified.
0.01
GAIN NONLINEARITY vs GAIN
0.003
Max
0.001
Typ
0.0003
1
10 100
Gain (V/V)
1k
CMR vs SOURCE IMBALANCE
120 G = 100 - 1000
G = 100 - 1000
100
G = 10
G = 10
80 G = 1
G=1
60
40
1
60Hz
DC
10
Source Resistance Imbalance (kΩ)
100
3200
TOTAL OFFSET VOLTAGE DRIFTvs GAIN
320
32
3.2
1
AM
BM, SM
CM
10 100
Gain (V/V)
1k
120
G = 100, 1000
CMR vs FREQUENCY
G = 10
100
G=1
80
Balanced
Source
60
40
1
10 100 1k
Frequency (Hz)
10k
GAIN vs FREQUENCY
G = 1000
60
G = 100
40
G = 10
20
G=1
0
1% Error
10 100
1k
10k 100k
1M
Frequency (Hz)
100%
10%
1%
0.1%
0.01%
10
GAIN ERROR vs FREQUENCY
G = 1000
G = 100
G = 10
G=1
100 1k 10k
Frequency (Hz)
100k
®
5 INA104
5 Page 
RA
RL
+15V (from isolated power supply
with bypassing)
High voltage protection
diodes are IN459.
330kΩ
LA
330kΩ
+15V
+15V
–15V
E1
1mVp-p
1MΩ
–15V
E2
13
17
–In
18
INA104
G = 1000
14
RG
40.04Ω
5
1
8
(1) 5kΩ
EOUT 1Vp-p
CMV
Sense
7
3
6
To isolation
stage
2 +In
12
10
4
–15V
(from isolated
1MΩ - 10MΩ power supply
NOTE: (1) Internal Op Amp, A4, or External Amp (OPA27 or equivalent).
with bypassing)
Right Leg Driver Amp gives higher AC CMR.
FIGURE 10. ECG Amplifier or Recorder Pre-Amp for Biological Signals.
∆EIN
17
–In
18
14
RG
5
1
2
+In
INA104
3
6
13
8
11
10
7
Isolation Amplifier
ISO100,
3650,
or
3656(1)
EOUT
+15V(2)
–15V(2)
Input
Common
Isolated Power Supply
722
+15V
+15V
Output
Common
–15V
NOTES: (1) Does not require an external ISO P/S. (2) Bypass as shown in Figure 1.
FIGURE 11. Precision Isolated Instrumentation Amplifier.
®
11 INA104
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet INA104SM.PDF ] | |
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