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

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.

Features:-

• 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

Application:-

• 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

Specification:-

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
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