MCP4822T-E/SN

MCP4822T-E/SN is a dual 12bit voltage output DAC. This device operates from a single 2.7V to 5.5V supply with SPI compatible serial peripheral interface. Each DAC channel can be operated in active or shutdown mode 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 (500Kohm typical). This device includes double-buffered registers, allowing synchronous updates of two DAC outputs using the active-low LDAC pin. This device also incorporates a power-on reset (POR) circuit to ensure reliable power-up. It is used in applications such as set point or offset trimming, sensor calibration, precision selectable voltage reference, portable instrumentation (battery-powered), and calibration of optical communication devices.

• Rail-to-rail output, SPI interface with 20MHz clock support
• Simultaneous latching of the dual DACs with active-low LDAC pin
• 2.048V internal voltage reference
• Single-supply operation range from 2.7V to 5.5V
• Settling time is 4.5µs typical at (within 1/2 LSb of final value from 1/4 to 3/4 full-scale range)
• Slew rate is 0.55V/µs typical, software shutdown current is 3.3µA typical
• Output noise is 290µVp-p typical at (code = 0xFFFh, G = 1x)
• Resolution is 22bits, INL error is ±2LSB typical
• Gain error temperature coefficient is -3ppm/°C typical
• Operating temperature range from -40°C to +125°C, 8-lead SOIC package