Microchip offers the single zero-drift MCP6N16 instrumentation amplifier (INA) with Enable pin (EN) and three minimum gain options (GMIN). The internal offset correction gives high-DC precision: it has very-low-offset and offset drift, and negligible 1/f noise. Two external resistors set the gain, minimizing gain error and drift over temperature. The reference voltage (VREF) shifts the output voltage (VOUT).
The MCP6N16 is designed for single-supply operation, with rail-to-rail input (no common mode crossover distortion) and output performance. The supply voltage range (1.8 V to 5.5 V) is low enough to support many portable applications. All devices are fully-specified from -40°C to +125°C. Each part has EMI filters at the input pins, for good EMI rejection (EMIRR). These parts have three minimum gain options (1, 10, and 100 V/V). This allows the user to optimize the input offset voltage and input noise for different applications.
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| Features |
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- High-DC precision
- VOS: ±17 µV (GMIN = 100)
- Low-offset drift: ± 60 nV/°C
- CMRR: 112 dB minimum
- PSRR: 110 dB minimum
- Low-gain error: ±0.15% maximum
- Flexibility
- Minimum gain (GMIN) options: 1, 10, and 100 V/V
- Rail-to-rail input and output
- Gain set by two external resistors
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- Bandwidth: 500 kHz (typ.)
- Power supply:
- VDD: 1.8 V to 5.5 V
- IQ: 1.1 mA (typical)
- Power saving (enable) pin: EN
- Enhanced EMI protection:
- Electromagnetic interference rejection ratio (EMIRR): 111 dB at 2.4 GHz
- Extended temperature range: -40°C to +125°C
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| Applications |
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- High-side current sensor
- Wheatstone bridge sensors
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- Difference amplifier with level shifting
- Power control loops
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Microchip offers the single zero-drift MCP6N16 instrumentation amplifier (INA) with Enable pin (EN) and three minimum gain options (GMIN). The internal offset correction gives high-DC precision: it has very-low-offset and offset drift, and negligible 1/f noise. Two external resistors set the gain, minimizing gain error and drift over temperature. The reference voltage (VREF) shifts the output voltage (VOUT).
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