INA129UA Datasheet PDF - Burr-Brown Corporation
| Part Number | INA129UA | |
| Description | Precision/ Low Power INSTRUMENTATION AMPLIFIERS | |
| Manufacturers | Burr-Brown Corporation | |
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®
INA128
INA129
INA128
INA129
INA128
INA129
Precision, Low Power
INSTRUMENTATION AMPLIFIERS
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: ±2.25 to ±18V
q LOW QUIESCENT CURRENT: 700µA
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 INA128 and INA129 are low power, general
purpose instrumentation amplifiers offering excellent
accuracy. Their versatile 3-op amp design and small
size make them ideal for a wide range of applications.
Current-feedback input circuitry provides wide band-
width even at high gain (200kHz at G = 100).
A single external resistor sets any gain from 1 to
10,000. INA128 provides an industry standard gain
equation; INA129’s gain equation is compatible with
the AD620.
The INA128/INA129 is laser trimmed for very low
offset voltage (50µV), drift (0.5µV/°C) and high com-
mon-mode rejection (120dB at G ≥ 100). It operates
with power supplies as low as ±2.25V, and quiescent
current is only 700µA—ideal for battery operated
systems. Internal input protection can withstand up to
±40V without damage.
The INA128/INA129 is available in 8-pin plastic
DIP, and SO-8 surface-mount packages, specified for
the –40°C to +85°C temperature range. The INA128
is also available in dual configuration, the INA2128.
– 2 Over-Voltage
VIN Protection
1
RG
8
+ 3 Over-Voltage
VIN Protection
A1
25kΩ(1)
25kΩ(1)
A2
V+
7
40kΩ
INA128, INA129
40kΩ
A3
6
INA128:
G = 1 + 50kΩ
RG
INA129:
G = 1 + 49.4kΩ
RG
VO
40kΩ
40kΩ
5
Ref
NOTE: (1) INA129: 24.7kΩ
4
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
©1995 Burr-Brown Corporation
PDS-1296C
Printed in U.S.A. October, 1996
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TYPICAL PERFORMANCE CURVES (CONT)
At TA = +25°C, VS = ±15V, unless otherwise noted.
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
0.85
QUIESCENT CURRENT and SLEW RATE
vs TEMPERATURE
6
0.8 5
0.75
0.7
Slew Rate
4
3
0.65
IQ
2
0.6
–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
+15V
–3
–4 G = 1000V/V
–5
VIN
IIN –15V
–50 –40 –30 –20 –10 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
–1
–2
–75
Typical IB and IOS
Range ±2nA at 25°C
IB
–50 –25
0 25 50
Temperature (°C)
75
100 125
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for INA129UA electronic component. |
| Information | Total 10 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ INA129UA.PDF Datasheet ] | |
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Featured Datasheets
| Part Number | Description | MFRS |
| INA129U | The function is Precision/ Low Power INSTRUMENTATION AMPLIFIERS. Burr-Brown Corporation | |
| INA129UA | The function is Precision/ Low Power INSTRUMENTATION AMPLIFIERS. Burr-Brown Corporation | |
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