MCP4921

www.DataSheet4U.com MCP4901/4911/4921 8/10/12-Bit Voltage Output Digital-to-Analog Converter with SPI Interface Features MCP4901: 8-Bit Voltage Output DAC MCP4911: 10-Bit Voltage Output DAC MCP4921: 12-Bit Voltage Output DAC Rail-to-Rail Output SPI Interface with 20 MHz Clock Support Simultaneous Latching of the DAC Output with LDAC Pin Fast Settling Time of 4.5 µs Selectable Unity or 2x Gain Output External Voltage Reference Input External Multiplier Mode 2.7V to 5.5V Single-Supply Operation Extended Temperature Range: -40°C to +125°C Description The MCP4901/4911/4921 devices are single channel 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 an 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 the device by setting the Configuration Register bit. In Shutdown mode, most of the internal circuits 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 the DAC output using the LDAC pin. These devices also incorporate a Power-on Reset (POR) circuit to ensure reliable powerup. The devices utilize a resistive string architecture, with i...