MCP4728T-EUN

MCP4728 12-Bit, Quad Digital-to-Analog Converter with EEPROM Memory Features Description 12-Bit Voltage Output DAC with Four Buffered The MCP4728 device is a quad, 12-bit voltage output Outputs Digital-to-Analog Convertor (DAC) with nonvolatile memory (EEPROM). Its on-board precision output On-Board Nonvolatile Memory (EEPROM) for 2 amplifier allows it to achieve rail-to-rail analog output DAC Codes and I C Address Bits swing. Internal or External Voltage Reference Selection The DAC input codes, device configuration bits, and Output Voltage Range: 2 I C address bits are programmable to the nonvolatile - Using Internal V (2.048V): REF 2 memory (EEPROM) by using I C serial interface 0.000V to 2.048V with Gain Setting = 1 commands. The nonvolatile memory feature enables the DAC device to hold the DAC input codes during 0.000V to 4.096V with Gain Setting = 2 power-off time, allowing the DAC outputs to be - Using External V (V ): REF DD available immediately after power-up with the saved 0.000V to V DD settings. This feature is very useful when the DAC device is used as a supporting device for other devices 0.2 Least Significant Bit (LSB) Differential in the applications network. Nonlinearity (DNL) (typical) Fast Settling Time: 6 s (typical) The MCP4728 device has a high precision internal voltage reference (V = 2.048V). The user can select Normal or Power-Down Mode REF the internal reference or external reference (V ) for DD Low Power Consumption each channel individually. Single-Supply Operation: 2.7V to 5.5V 2 Each channel can be operated in Normal mode or I C Interface: Power-Down mode individually by setting the - Address bits: User Programmable to configuration register bits. In Power-Down mode, most EEPROM of the internal circuits in the powered down channel are - Standard (100 kbps), Fast (400 kbps) and turned off for power savings, and the output amplifier High Speed (HS) Mode (3.4 Mbps) can be configured to present a known low, medium, or 10-Lead MSOP Package high resistance output load. Extended Temperature Range: -40C to +125C The MCP4728 device includes a Power-on Reset (POR) circuit to ensure reliable power-up and an Applications on-board charge pump for the EEPROM programming voltage. Set Point or Offset Adjustment 2 The MCP4728 has a two-wire I C compatible serial Sensor Calibration interface for standard (100 kHz), fast (400 kHz), or high Closed-Loop Servo Control speed (3.4 MHz) mode. Low Power Portable Instrumentation The MCP4728 DAC is an ideal device for applications PC Peripherals requiring design simplicity with high precision, and for Programmable Voltage and Current Source applications requiring the DAC device settings to be Industrial Process Control saved during power-off time. Instrumentation The MCP4728 device is available in a 10-lead MSOP Bias Voltage Adjustment for Power Amplifiers package and operates from a single 2.7V to 5.5V supply voltage. 2010 Microchip Technology Inc. DS22187E-page 1MCP4728 Package Type MCP4728 MSOP V 1 10 V DD SS 9 SCL 2 V D OUT SDA 8 V C 3 OUT 7 LDAC 4 V B OUT RDY/BSY 5 6 V A OUT Functional Block Diagram LDAC EEPRO M A Output V A UDAC REF Gain V Logic DD Control OP INPUT OUTPUT V A OUT STRING DAC A AMP A V SS REGISTER A REGISTER A Power Down EEP ROM B V B Control UDAC REF Output Gain Logic Control OP INPUT OUTPUT V B STRING DAC B OUT AMP B REGISTER B REGISTER B SDA EEPRO M C Power Down V C UDAC REF Output Control Gain Logic Control SCL OP INPUT OUTPUT V C STRING DAC C OUT REGISTER C AMP C REGISTER C EEPRO M D Power Down V D UDAC REF Output Control Gain Logic Control INPUT OP OUTPUT V D RDY/BSY STRING DAC D OUT REGISTER D REGISTER D AMP D Internal V Power Down REF V Selector V REF REF (2.048V) Control (V A, V B, V C, V D) REF REF REF REF V DD DS22187E-page 2 2010 Microchip Technology Inc. 2 I C Interface Logic