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INA128 IC – (SMD Package) – Low Power Instrumentation Amplifier IC

614.00 + GST

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The INA128 SMD are low-power, general-purpose instrumentation amplifiers offering excellent accuracy. The versatile three-operational- amplifier design and small size make them ideal for a wide range of applications. Current-feedback input circuitry provides wide bandwidth even at high gain. A single external resistor sets any gain from 1 to 10000. The INA128 SMD  provides an industry-standard gain equation. The INA128 SMD  are laser trimmed for very low offset voltage (25 PV Typ) and high common-mode rejection (93 dB at G 2 100). These devices operate with power supplies as low as ±2.25 V, and quiescent current of 2 mA, typically. Internal input protection can withstand up to V without damage.

The high-temperature products use highly optimized silicon (die) solutions with design and process enhancements to maximize performance over extended temperatures. The INA128 SMD is available in an 8-pin SOIC-8 surface-mount package, specified for the —550C to 1750C temperature range.


• Low Offset Voltage: 25 uv Typical

• Low Input Bias Current: 50 nA Typical (t)

• High CMR: 95 dB Typical”)

• Inputs Protected to ± 40V

• Wide Supply Range: ±2.25 V to ± 18V

•  Low Quiescent Current: 2 mA Typical


• Bridge Amplifiers

• Thermo couple Amplifiers

• RTD Sensor Amplifiers

• Medical Instrumentation

• Data Acquisition

• Supports Extreme Temperature Applications:

– Controlled Baseline

– One Assembly/Test Site

– One Fabrication Site

– Available in Extreme Temperature Ranges (-550C to 2100c)

– Extended Product Life Cycle

– Extended Product-Change Notification

– Product Traceability


Parameter Value
Number of channels (#) 1
Vs (Max) (V) 36
Vs (Min) (V) 4.5
Input offset (+/-) (Max) (uV) 250
Gain (Min) (V/V) 1
Gain (Max) (V/V) 10000
Noise at 1 kHz (Typ) (nV/rt (Hz)) 8
CMRR (Min) (dB) 120
Input offset drift (+/-) (Max) (uV/C) 0.5
Input bias current (+/-) (Max) (nA) 5
Iq (Typ) (mA) 0.7
Bandwidth at min gain (Typ) (MHz) 1.3
Gain error (+/-) (Max) (%) 2.5
Operating temperature range -55 to +175
Noise at 0.1 Hz-10 Hz (Typ) (uVpp) 0.2
Gain non-linearity (+/-) (Max) (%) 0.012


* product image for illustration purposes only. actual product may vary.


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