Non-volatile EEPROM provides designers the flexibility to program MCP4728 DAC input codes, configuration bits and I2C address bits to the EEPROM using I2C serial-interface commands. The result is that this data is held during power-off time, making the MCP4728 DAC’s configuration and outputs available immediately after power-up. Additionally, each channel in the MCP4728 DAC can be individually shut down, thereby reducing power consumption to as low as 0.04 microamperes, which helps to extend battery life. Further, the on-chip precision output amplifier enables a rail-to-rail analog output, for utilization of the entire voltage range.
“Microchip has utilized its expertise in both non-volatile memory and mixed-signal technology to provide added flexibility to customers with the MCP4728 DAC,” said Bryan Liddiard, vice president of marketing with Microchip’s Analog & Interface Products Division.
“Being the first 12-bit Quad DAC in the industry to integrate non-volatile EEPROM, the MCP4728 is expected to help designers meet or exceed cost and size requirements, while providing the resolution and low power consumption that today’s battery-powered and power-constrained electronic devices require,” continued Jefferay Lawton, product marketing engineer with Microchip’s Analog and Interface Products Division.
Applications:
The MCP4728 DAC is appropriate for applications in the consumer (personal media players, digital cameras and GPS devices); medical (portable glucose meters, blood pressure and heart-rate monitors); industrial (handheld instruments, motor-control applications, and temperature and light control); appliance (washing machines and espresso machines); and automotive (LED lamps and alarm/security systems) markets.
Development Tool Support:
The MCP4728 Evaluation Board (Part # MCP4728EV, $15) is available to help designers quickly evaluate the MCP4728 DAC in their applications. The board works with Microchip’s PICkit Serial Analyzer (part # DV164122, $49.99), or independently with the customer’s application board.
