Описание
The MCP3426 device is the low noise and high accuracy 16 Bit Delta-Sigma Analog-to-Digital (?S A/D) Converter family members of the MCP3426 series from Microchip Technology Inc. These devices can convert analog inputs to digital codes with up to 16 bits of resolution. The MCP3426 and MCP3427 devices have two differential input channels and the MCP3428 has four differential input channels. All electrical properties of these three devices are the same except the differences in the number of input channels and I2C address bit selection options.
- 16-bit ?S ADC with Differential Inputs: – 2 channels: MCP3426 and MCP3427 – 4 channels: MCP3428
- Differential Input Full Scale Range: -VREF to +VREF
- Self Calibration of Internal Offset and Gain per Each Conversion
- On-Board Voltage Reference (VREF): – Accuracy: 2.048V ± 0.05% – Drift: 15 ppm/°C
- On-Board Programmable Gain Amplifier (PGA): – Gains of 1,2, 4 or 8
- INL: 10 ppm of Full Scale Range
- Programmable Data Rate Options: – 15 SPS (16 bits) – 60 SPS (14 bits) – 240 SPS (12 bits)
- One-Shot or Continuous Conversion Options
- Low Current Consumption (VDD= 3V): – Continuous Conversion: 135 µA typical – One-Shot Conversion with 1 SPS: – 9 µA typical for 16 bit mode – 2.25 µA typical for 14 bit mode – 0.56 µA typical for 12 bit mode
- On-Board Oscillator
- I2C™ Interface: – Standard, Fast and High Speed Modes – User configurable two external address selection pins for MCP3427 and MCP3428
- Single Supply Operation: 2.7V to 5.5V
- Extended Temperature Range: -40°C to +125°C
