MCP3423-E/UN产品概述
The MCP3423 is a two channel low-noise, high accuracy delta-sigma A/D converter with differential inputs and up to 18 bits of resolution. The on-board precision 2.048 V reference voltage enables an input range of ±2.048 V differentially. The device uses a two-wire I2C™ compatible serial interface and operates from a single power supply ranging from 2.7 V to 5.5 V. The MCP3422 device performs conversions at rates of 3.75, 15, 60 or 240 samples per second depending on user controllable configuration bit settings using the two-wire I2C compatible serial interface. This device has an onboard programmable gain amplifier (PGA). User can select the PGA gain of x1, x2, x4, or x8 before the analog-to-digital conversion takes place. This allows the MCP3422 device to convert a smaller input signal with high resolution. The device has two conversion modes: (a) Continuous mode and (b) One-Shot mode. In One-Shot mode, the device enters a low current standby mode automatically after one conversion. This reduces current consumption greatly during idle periods. The MCP3422 device can be used for various high accuracy analog-to-digital data conversion applications where ease of use, low power consumption and small footprint are major considerations.
Features:
18-bit Resolution
2-Channel Differential Input Operation
On-Board Voltage Reference with 15 ppm/°C Drift
On-Board PGA, Gains of 1, 2, 4, 8
Datasheet
