MCP3424-E/SL IC ADC 18BIT SIGMA-DELTA 14SOIC

Description

The MCP3422, MCP3423 and MCP3424 devices (MCP3422/3/4) are the low noise and high accuracy 18-Bit delta-sigma analog-to-digital (ΔΣ A/D) converter family members of the MCP342X series from Microchip Technology Inc. These devices can convert analog inputs to digital codes with up to 18 bits of resolution. The on-board 2.048V reference voltage enables an input range of ± 2.048V differentially (full scale range = 4.096V/PGA). These devices can output analog-to-digital conversion results at rates of 3.75, 15, 60, or 240 samples per second depending on the user controllable configuration bit settings using the two-wire I2C serial interface. During each conversion, the device calibrates offset and gain errors automatically. This provides accurate conversion results from conversion to conversion over variations in temperature and power supply fluctuation. The user can select the PGA gain of x1, x2, x4, or x8 before the analog-to-digital conversion takes place. This allows the MCP3422/3/4 devices to convert a very weak input signal with high resolution. The MCP3422/3/4 devices have two conversion modes: (a) One-Shot Conversion mode and (b) Continuous Conversion mode. In One-Shot conversion mode, the device performs a single conversion and enters a low current standby mode automatically until it receives another conversion command. This reduces current consumption greatly during idle periods. In Continuous conversion mode, the conversion takes place continuously at the set conversion speed. The device updates its output buffer with the most recent conversion data.