| Number of channels (#) | 2 |
| Vs (Max) (V) | 36 |
| Vs (Min) (V) | 4.5 |
| Input offset (+/-) (Max) (uV) | 50 |
| Gain (Min) (V/V) | 1 |
| Gain (Max) (V/V) | 10000 |
| Noise at 1 kHz (Typ) (nV/rt (Hz)) | 8 |
| Features | Current Feedback, Overvoltage Protection |
| 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) (%) | 0.5 |
| Operating temperature range (C) | -40 to 85 |
| Type | Resistor |
| Output swing headroom (to negative supply) (Typ) (V) | 0.8 |
| Output swing headroom (to positive supply) (Typ) (V) | -0.9 |
| Input common mode headroom (to negative supply) (Typ) (V) | 1.7 |
| Input common mode headroom (to positive supply) (Typ) (V) | -1.4 |
| Noise at 0.1 Hz-10 Hz (Typ) (uVpp) | 0.2 |
| Gain non-linearity (+/-) (Max) (%) | 0.002 |
- LOW OFFSET VOLTAGE: 50μV max
- LOW DRIFT: 0.5μV/°C max
- LOW INPUT BIAS CURRENT: 5nA max
- HIGH CMR: 120dB min
- INPUTS PROTECTED to ±40V
- WIDE SUPPLY RANGE: ±2.25V to ±18V
- LOW QUIESCENT CURRENT: 700μA / IA
- 16-PIN PLASTIC DIP, SOL-16
- APPLICATIONS
- SENSOR AMPLIFIER THERMOCOUPLE, RTD, BRIDGE
- MEDICAL INSTRUMENTATION
- MULTIPLE-CHANNEL SYSTEMS
- BATTERY OPERATED EQUIPMENT
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The INA2128 is a dual, low power, general purpose instrumentation amplifier offering excellent accuracy. Its versatile 3-op amp design and small size make it ideal for a wide range of applications. Current-feedback input circuitry provides wide bandwidth even at high gain (200kHz at G = 100).
A single external resistor sets any gain from 1 to 10,000. Internal input protection can withstand up to ±40V without damage.
The INA2128 is laser trimmed for very low offset voltage (50μV), drift (0.5μV/°C) and high common-mode rejection (120dB at G ≥ 100). It operates with power supplies as low as ±2.25V, and quiescent current is only 700μA per IA?ideal for battery operated and multiple-channel systems.
The INA2128 is available in 16-pin plastic DIP, and SOL-16 surface-mount packages, specified for the -40°C to +85°C temperature range.