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PDF INA2128U Data sheet ( Hoja de datos )
| Número de pieza | INA2128U | |
| Descripción | Dual/ Low Power INSTRUMENTATION AMPLIFIER | |
| Fabricantes | Burr-Brown Corporation | |
| Logotipo |  |
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® INA2128
INA2128
INA2128
Dual, Low Power
INSTRUMENTATION AMPLIFIER
FEATURES
q LOW OFFSET VOLTAGE: 50µV max
q LOW DRIFT: 0.5µV/°C max
q LOW INPUT BIAS CURRENT: 5nA max
q HIGH CMR: 120dB min
q INPUTS PROTECTED TO ±40V
q WIDE SUPPLY RANGE: ±2.25V to ±18V
q LOW QUIESCENT CURRENT: 700µA / IA
q 16-PIN PLASTIC DIP, SOL-16
APPLICATIONS
q SENSOR AMPLIFIER
THERMOCOUPLE, RTD, BRIDGE
q MEDICAL INSTRUMENTATION
q MULTIPLE-CHANNEL SYSTEMS
q BATTERY OPERATED EQUIPMENT
VIN–A
1 Over-Voltage
Protection
3
RGA
4
VIN+A
2 Over-Voltage
Protection
A1A
25kΩ
25kΩ
A2A
DESCRIPTION
The INA2128 is a dual, low power, general purpose
instrumentation 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).
A single external resistor sets any gain from 1 to 10,000.
Internal input protection can withstand up to ±40V
without damage.
The INA2128 is laser trimmed for very low offset
voltage (50µV), drift (0.5µV/°C) and high common-
mode rejection (120dB at G ≥ 100). It operates with
power supplies as low as ±2.25V, and quiescent current
is only 700µA per IA—ideal for battery operated and
multiple-channel systems.
The INA2128 is available in 16-pin plastic DIP, and
SOL-16 surface-mount packages, specified for the
–40°C to +85°C temperature range.
V+
9
INA2128
40kΩ
40kΩ
7
GA = 1 +
50kΩ
RGA
A3A 6 VOA
40kΩ
40kΩ
5 RefA
VIN–B
16
Over-Voltage
Protection
14
RGB
13
VIN+B
15
Over-Voltage
Protection
A1B
25kΩ
25kΩ
A2B
40kΩ
40kΩ
40kΩ
A3B
40kΩ
10
GB
=
1
+
50kΩ
RGB
11 VOB
12 RefB
8
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
©1994 Burr-Brown Corporation
PDS-1243C
Printed in U.S.A. January, 1996
1 page  
TYPICAL PERFORMANCE CURVES (CONT)
At TA = +25°C, VS = ±15V, unless otherwise noted.
CROSSTALK vs FREQUENCY
140
G = 1000V/V G = 100V/V
120
G = 10V/V
100
G = 1V/V
80
G = 1000V/V
G = 100V/V
60
40
20
0
10 100
1k
10k 100k
1M
Frequency (Hz)
INPUT- REFERRED NOISE vs FREQUENCY
1k
100
G = 1V/V
100 10
10
1
1
G = 10V/V
G = 100, 1000V/V
1
Current Noise
10 100 1k
Frequency (Hz)
0.1
10k
100
10
1
1
SETTLING TIME vs GAIN
0.01%
0.1%
10 100
Gain (V/V)
1000
QUIESCENT CURRENT and SLEW RATE
vs TEMPERATURE
1.7 6
1.6 5
1.5
Slew Rate
4
1.4 3
IQ
1.3 2
1.2
–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 = 1000V/V
G = 1V/V
–1 G = 1V/V
–2
–3
–4 G = 1000V/V
–5
–50 –40 –30 –20 –10
+15V
1/2
INA2128
VIN
IIN –15V
0 10 20 30 40
50
Input Voltage (V)
10
8
6
4
2
0
–2
–4
–6
–8
–10
0
OFFSET VOLTAGE WARM-UP
10 20 30 40 50
Time (ms)
®
5 INA2128
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet INA2128U.PDF ] | |
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