The INA114 is a low cost, 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.
A single external resistor sets any gain from 1 to 10,000. Internal input protection can withstand up to ±40V without damage.
The INA114 is laser trimmed for very low offset voltage (50µV), drift (0.25µV/°C) and high common-mode rejection (115dB at G = 1000). It operates with power supplies as low as ±2.25V, allowing use in battery operated and single 5V supply systems. Quiescent current is 3mA maximum.
The INA114 is available in 8-pin plastic and ceramic DIPs, and SOL-16 surface-mount packages, specified for the -40°C to +85°C temperature range.
| Number of channels | 1 |
| Vs (max) (V) | 36 |
| Vs (min) (V) | 4.5 |
| Input offset (±) (max) (µV) | 50 |
| Voltage gain (min) (V/V) | 1 |
| Voltage gain (max) (V/V) | 10000 |
| Noise at 1 kHz (typ) (nV√Hz) | 11 |
| Features | Overvoltage protection |
| CMRR (min) (dB) | 115 |
| Input offset drift (±) (max) (V/°C) | 0.00000025 |
| Input bias current (±) (max) (nA) | 2 |
| Iq (typ) (mA) | 2.2 |
| Bandwidth at min gain (typ) (MHz) | 1 |
| Gain error (±) (max) (%) | 0.5 |
| Operating temperature range (°C) | -40 to 85 |
| Rating | Catalog |
| Type | Resistor |
| Gain nonlinearity (±) (max) (%) | 0.002 |
| Output swing headroom (to negative supply) (typ) (V) | 1.3 |
| Output swing headroom (to positive supply) (typ) (V) | -1.3 |
| Input common mode headroom (to negative supply) (typ) (V) | 1.5 |
| Input common mode headroom (to positive supply) (typ) (V) | -1.5 |
| Noise at 0.1 Hz to 10 Hz (typ) (µVPP) | 0.4 |
| PDIP (P) | 8 | 92.5083 mm² 9.81 x 9.43 |
| SOIC (DW) | 16 | 106.09 mm² 10.3 x 10.3 |
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