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PDF INA2126 Data sheet ( Hoja de datos )

Número de pieza INA2126
Descripción MicroPOWER INSTRUMENTATION AMPLIFIER Single and Dual Versions
Fabricantes Burr-Brown Corporation　
Logotipo Burr-Brown Corporation Logotipo



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®
INA126
INA2126
INA126
INA2126
INA2126
INA126
INA2126
MicroPOWER INSTRUMENTATION AMPLIFIER
Single and Dual Versions
FEATURES
DESCRIPTION
q LOW QUIESCENT CURRENT: 175µA/chan.
q WIDE SUPPLY RANGE: ±1.35V to ±18V
q LOW OFFSET VOLTAGE: 250µV max
q LOW OFFSET DRIFT: 3µV/°C max
q LOW NOISE: 35nV/√ Hz
q LOW INPUT BIAS CURRENT: 25nA max
q 8-PIN DIP, SO-8, MSOP-8 SURFACE- MOUNT
DUAL: 16-Pin DIP, SO-16, SSOP-16
APPLICATIONS
q INDUSTRIAL SENSOR AMPLIFIER:
Bridge, RTD, Thermocouple
q PHYSIOLOGICAL AMPLIFIER:
ECG, EEG, EMG
q MULTI-CHANNEL DATA ACQUISITION
q PORTABLE, BATTERY OPERATED SYSTEMS
VI+N 3
8
RG
1
VI–N 2
V+
7
INA126
6
40kΩ
10kΩ
VO = (VI+N – VI–N) G
G = 5 + 80k
RG
10kΩ
40kΩ
4
5
The INA126 and INA2126 are precision instrumentation
amplifiers for accurate, low noise differential signal acquisi-
tion. Their two-op-amp design provides excellent perfor-
mance with very low quiescent current (175µA/chan.). This,
combined with wide operating voltage range of ±1.35V to
±18V, makes them ideal for portable instrumentation and data
acquisition systems.
Gain can be set from 5V/V to 10000V/V with a single
external resistor. Laser trimmed input circuitry provides
low offset voltage (250µV max), low offset voltage drift
(3µV/°C max) and excellent common-mode rejection.
Single version package options include 8-pin plastic DIP,
SO-8 surface mount, and fine-pitch MSOP-8 surface-mount.
Dual version is available in the space-saving SSOP-16 fine-
pitch surface mount, SO-16, and 16-pin DIP. All are speci-
fied for the –40°C to +85°C industrial temperature range.
V+
VI+N 2
4
RG
INA2126 9
6
40kΩ
10kΩ
7
VO = (VI+N – VI–N) G
G=5+
80k
RG
3
VI–N 1
VI+N 15
13
RG
10kΩ
40kΩ
40kΩ
10kΩ
5
11 VO = (VI+N – VI–N) G
10
G=5+
80k
RG
14
VI–N 16
8
10kΩ
40kΩ
12
V–
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
©1996 Burr-Brown Corporation
PDS-1365C
Printed in U.S.A. September, 1997

1 page




INA2126 pdf
TYPICAL PERFORMANCE CURVES (CONT)
At TA = +25°C and VS = ±15V, unless otherwise noted.
INPUT-REFERRED NOISE vs FREQUENCY
100 1k
Voltage Noise
10
Current Noise
100
1 10
1 10 100 1k 10k
Frequency (Hz)
1000
100
10
1
SETTLING TIME vs GAIN
0.01%
0.1%
10 100
Gain (V/V)
1k
10
8
6
4
2
0
–2
–4
–6
–8
–10
0
INPUT-REFERRED OFFSET VOLTAGE WARM-UP
(Noise)
12345 6789
Time After Turn-On (ms)
10
TOTAL HARMONIC DISTORTION+NOISE
vs FREQUENCY
1
0.1
0.01
0.001
10
RL = 10kΩ
G=5
RL = 100kΩ
100 1k
Frequency (Hz)
10k
QUIESCENT CURRENT AND SLEW RATE
vs TEMPERATURE
300 0.6
–SR
250 0.5
+SR
200 0.4
150 0.3
VS = ±1.35V
100 IQ VS = ±5V 0.2
50 0.1
0
–75 –50 –25
0 25 50
Temperature (°C)
0
75 100 125
V+
(V+)–1
(V+)–2
(V–)+2
(V–)+1
V–
0
OUTPUT VOLTAGE SWING
vs OUTPUT CURRENT
Sourcing Current
Sinking Current
1 234
Output Current (mA)
5
®
5 INA126, INA2126

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