MCP4912

www.DataSheet4U.com MCP4902/4912/4922 8/10/12-Bit Dual Voltage Output Digital-to-Analog Converter with SPI Interface Features MCP4902: Dual 8-Bit Voltage Output DAC MCP4912: Dual 10-Bit Voltage Output DAC MCP4922: Dual 12-Bit Voltage Output DAC Rail-to-Rail Output SPI Interface with 20 MHz Clock Support Simultaneous Latching of the Dual DACs with LDAC pin Fast Settling Time of 4.5 µs Selectable Unity or 2x Gain Output External Voltage Reference Inputs External Multiplier Mode 2.7V to 5.5V Single-Supply Operation Extended Temperature Range: -40°C to +125°C Description The MCP4902/4912/4922 devices are dual 8-bit, 10-bit, and 12-bit buffered voltage output Digital-to-Analog Converters (DACs), respectively. The devices operate from a single 2.7V to 5.5V supply with SPI compatible Serial Peripheral Interface. The user can configure the full-scale range of the device to be VREF or 2 * VREF by setting the Gain Selection Option bit (gain of 1 of 2). The user can shut down both DAC channels by using SHDN pin or shut down the DAC channel individually by setting the Configuration register bits. In Shutdown mode, most of the internal circuits in the shutdown channel are turned off for power savings and the output amplifier is configured to present a known high resistance output load (500 ktypical. The devices include double-buffered registers, allowing synchronous updates of two DAC outputs, using the LDAC pin. These devices also incorporate a Power-on Rese...