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PDF INA141 Data sheet ( Hoja de datos )

Número de pieza INA141
Descripción Precision/ Low Power/ G = 10/ 100 INSTRUMENTATION AMPLIFIER
Fabricantes Burr-Brown Corporation 
Logotipo Burr-Brown Corporation Logotipo



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INA141
INA141
INA141
Precision, Low Power, G = 10, 100
INSTRUMENTATION AMPLIFIER
FEATURES
q LOW OFFSET VOLTAGE: 50µV max
q LOW DRIFT: 0.5µV/°C max
q ACCURATE GAIN: ±0.05% at G = 10
q LOW INPUT BIAS CURRENT: 5nA max
q HIGH CMR: 117dB min
q INPUTS PROTECTED TO ±40V
q WIDE SUPPLY RANGE: ±2.25 to ±18V
q LOW QUIESCENT CURRENT: 750µA
q 8-PIN PLASTIC DIP, SO-8
APPLICATIONS
q BRIDGE AMPLIFIER
q THERMOCOUPLE AMPLIFIER
q RTD SENSOR AMPLIFIER
q MEDICAL INSTRUMENTATION
q DATA ACQUISITION
DESCRIPTION
The INA141 is a low power, general purpose instru-
mentation amplifier offering excellent accuracy. Its
versatile 3-op amp design and small size make it ideal
for a wide range of applications. Current-feedback
input circuitry provides wide bandwidth even at high
gain (200kHz at G = 100).
Simple pin connections set an accurate gain of 10 or
100V/V without external resistors. Internal input pro-
tection can withstand up to ±40V without damage.
The INA141 is laser trimmed for very low offset
voltage (50µV), drift (0.5µV/°C) and high common-
mode rejection (117dB at G = 100). It operates with
power supplies as low as ±2.25V, and quiescent
current is only 750µA—ideal for battery operated
systems.
The INA141 is available in 8-pin plastic DIP, and
SO-8 surface-mount packages, specified for the –40°C
to +85°C temperature range.
V+
7
VIN 2
G = 10
or
G =100
1
8
Over-Voltage
Protection
252
5050
252
VI+N 3
Over-Voltage
Protection
A1
25k
25k
A2
INA141
40k
40k
A3
40k
4
V–
40k
6
VO
5
Ref
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
PDS-11297B
INA141
®

1 page




INA141 pdf
TYPICAL PERFORMANCE CURVES (CONT)
At TA = +25°C and VS = ±15V, unless otherwise noted.
INPUT- REFERRED NOISE vs FREQUENCY
1k
100
100
10
1
1
G = 10V/V
G = 100V/V
Current Noise
10 100 1k
Frequency (Hz)
10
1
0.1
10k
QUIESCENT CURRENT and SLEW RATE
vs TEMPERATURE
0.9 6
0.85
5
0.8
0.75
0.7
Slew Rate
IQ
4
3
2
0.65
–75 –50 –25
0 25 50
Temperature (°C)
1
75 100 125
INPUT OVER-VOLTAGE V/I CHARACTERISTICS
5
4
3
Flat region represents
2 normal linear operation.
1
0
G = 100V/V
G = 10V/V
–1
G = 10V/V
–2
–3 G = 100V/V
–4
–5
–50 –40 –30 –20 –10
+15V
INA141
VIN
IIN –15V
0 10 20 30 40
50
Input Voltage (V)
10
8
6
4
2
0
–2
–4
–6
–8
–10
0
INPUT OFFSET VOLTAGE WARM-UP
100 200 300 400 500
Time (µs)
INPUT BIAS CURRENT vs TEMPERATURE
2
1
IOS
0
IB
–1 Typical IB Range
±2nA at 25°C
–2
–75 –50 –25 0 25 50 75 100 125
Temperature (°C)
(V+)
(V+)–0.4
(V+)–0.8
(V+)–1.2
(V+)+1.2
(V–)+0.8
(V–)+0.4
V–
0
OUTPUT VOLTAGE SWING
vs OUTPUT CURRENT
123
Output Current (mA)
4
®
5 INA141

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