| Number of channels (#) | 1 |
| Vs (Max) (V) | 5.5 |
| Vs (Min) (V) | 1.8 |
| Input offset (+/-) (Max) (uV) | 25 |
| Gain (Min) (V/V) | 1 |
| Gain (Max) (V/V) | 1000 |
| Noise at 1 kHz (Typ) (nV/rt (Hz)) | 50 |
| Features | Zero Drift, Low power |
| CMRR (Min) (dB) | 80 |
| Input offset drift (+/-) (Max) (uV/C) | 0.1 |
| Input bias current (+/-) (Max) (nA) | 0.2 |
| Iq (Typ) (mA) | 0.198 |
| Bandwidth at min gain (Typ) (MHz) | 0.15 |
| Gain error (+/-) (Max) (%) | 0.5 |
| Operating temperature range (C) | -55 to 210 |
| Type | Resistor |
| Output swing headroom (to negative supply) (Typ) (V) | 0.05 |
| Output swing headroom (to positive supply) (Typ) (V) | -0.05 |
| Input common mode headroom (to negative supply) (Typ) (V) | 0.1 |
| Input common mode headroom (to positive supply) (Typ) (V) | -0.1 |
| Noise at 0.1 Hz-10 Hz (Typ) (uVpp) | 2 |
| Gain non-linearity (+/-) (Max) (%) | 0.001 |
- Low Offset Voltage: 25 μV (max at 25°C), G ≥ 100
- Low Drift: 0.2 μV/°C, G ≥ 1000
- Low Noise: 55 nV/√Hz, G ≥ 100
- High CMRR: 100 dB (min at 25°C), G ≥ 10
- Supply Range: +1.8 V to +5.5 V
- Input Voltage: (V–) +0.1 V to (V+) –0.1 V
- Output Range: (V–) +0.05 V to (V+) –0.05V
- Low Quiescent Current: 198 μA
- RFI Filtered Inputs
The INA333 is a low-power, precision instrumentation amplifier offering excellent accuracy. The versatile 3-op amp design, small size, and low power make it ideal for a wide range of portable applications.
A single external resistor sets any gain from 1 to 1000. The INA333 is designed to use an industry-standard gain equation: G = 1 + (100kΩ/RG).
The INA333 provides very low offset voltage (25 μV at 25°C, G ≥ 100), excellent offset voltage drift (0.2 μV/°C, G?≥?100), and high common-mode rejection (100 dB at 25°C, G?≥?10). It operates with power supplies as low as 1.8 V (±0.9V), and quiescent current is only 50 μA—ideal for battery-operated systems. Using autocalibration techniques to ensure excellent precision over the extended industrial temperature range, the INA333 also offers exceptionally low noise density (55 nV/√Hz) that extends down to dc.
The INA333 is is specified over the TA?=?–55°C to +210°C temperature range.