INA128U/2K5 Audio Power Amplifier IC Instrumentation Amplifiers Precision Low Power Instrumentation Amp
digital audio amplifier ic
,audio preamplifier ic
INA128U/2K5 Audio Power Amplifier IC Instrumentation Amplifiers Precision Low Power Instrumentation Amp
1 Features
- A newer version of this device is now available: INA828
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Low offset voltage: 50 μV maximum
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Low drift: 0.5 μV/°C maximum
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Low Input Bias Current: 5 nA maximum
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High CMR: 120 dB minimum
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Inputs protected to ±40 V
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Wide supply range: ±2.25 V to ±18 V
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Low quiescent current: 700 μA
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Packages: 8-pin plastic DIP, SO-8
2 Applications
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Bridge amplifier
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Thermocouple amplifier
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RTD sensor amplifier
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Medical instrumentation
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Data acquisition
3 Description
The INA128 and INA129 are low-power, general purpose instrumentation amplifiers offering excellent accuracy. The versatile 3-op amp design and small size make these amplifiers ideal for a wide range of applications. Current-feedback input circuitry provides wide bandwidth even at high gain (200 kHz at G = 100).
A single external resistor sets any gain from 1 to 10,000. The INA128 provides an industry-standard gain equation; the INA129 gain equation is compatible with the AD620.
The INA12x 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 a dual configuration, the INA2128.
The upgraded INA828 offers a lower input bias current (0.6 nA maximum) and lower noise (7 nV/√Hz) at the same quiescent current. See the Device Comparison Table for a selection of precision instrumentation amplifiers from Texas Instruments.
Device Information
PART NUMBER |
PACKAGE |
BODY SIZE (NOM) |
INA128, INA129 |
SOIC (8) |
3.91 mm × 4.90 mm |
PDIP (8) |
6.35 mm × 9.81 mm |
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