MCP4812T-EMS Microchip

MCP4802/4812/4822 8/10/12-Bit Dual Voltage Output Digital-to-Analog Converter with Internal V and SPI Interface REF Features Description MCP4802: Dual 8-Bit Voltage Output DAC The MCP4802/4812/4822 devices are dual 8-bit, 10-bit and 12-bit buffered voltage output Digital-to-Analog MCP4812: Dual 10-Bit Voltage Output DAC Converters (DACs), respectively. The devices operate MCP4822: Dual 12-Bit Voltage Output DAC from a single 2.7V to 5.5V supply with SPI compatible Rail-to-Rail Output Serial Peripheral Interface. SPI Interface with 20 MHz Clock Support The devices have a high precision internal voltage Simultaneous Latching of the Dual DACs reference (V = 2.048V). The user can configure the REF with LDAC pin full-scale range of the device to be 2.048V or 4.096V by Fast Settling Time of 4.5 s setting the Gain Selection Option bit (gain of 1 of 2). Selectable Unity or 2x Gain Output Each DAC channel can be operated in Active or Shutdown mode individually by setting the Configuration 2.048V Internal Voltage Reference register bits. In Shutdown mode, most of the internal 50 ppm/C V Temperature Coefficient REF circuits in the shutdown channel are turned off for power 2.7V to 5.5V Single-Supply Operation savings and the output amplifier is configured to present Extended Temperature Range: -40C to +125C a known high resistance output load (500 k typical. The devices include double-buffered registers, Applications allowing synchronous updates of two DAC outputs using the LDAC pin. These devices also incorporate a Set Point or Offset Trimming Power-on Reset (POR) circuit to ensure reliable power- Sensor Calibration up. Precision Selectable Voltage Reference The devices utilize a resistive string architecture, with Portable Instrumentation (Battery-Powered) its inherent advantages of low DNL error, low ratio Calibration of Optical Communication Devices metric temperature coefficient and fast settling time. These devices are specified over the extended (1) temperature range (+125C). Related Products The devices provide high accuracy and low noise Voltage performance for consumer and industrial applications DAC No. of P/N Reference where calibration or compensation of signals (such as Resolution Channels (V ) REF temperature, pressure and humidity) are required. MCP4801 8 1 The MCP4802/4812/4822 devices are available in the PDIP, SOIC and MSOP packages. MCP4811 10 1 MCP4821 12 1 Internal Package Types (2.048V) MCP4802 8 2 8-Pin PDIP, SOIC, MSOP MCP4812 10 2 MCP4822 12 2 V V 1 8 DD OUTA MCP4901 8 1 2 7 V CS SS MCP4911 10 1 V 3 6 SCK OUTB MCP4921 12 1 4 5 SDI LDAC External MCP4902 8 2 MCP4802: 8-bit dual DAC MCP4912 10 2 MCP4812: 10-bit dual DAC MCP4822: 12-bit dual DAC MCP4922 12 2 Note 1: The products listed here have similar AC/DC performances. 2010-2015 Microchip Technology Inc. DS20002249B-page 1 MCP48X2MCP4802/4812/4822 Block Diagram CS SDI SCK LDAC V DD Power-on Interface Logic Reset V SS Input Input Register A Register B 2.048V V REF DAC DAC A B Register Register String String DAC DAC A B Gain Gain Logic Logic Output Op Amps Output Logic V V OUTA OUTB DS20002249B-page 2 2010-2015 Microchip Technology Inc.