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 |
| 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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