MICROCHIP MCP47FVB08-E/MQ

The MCP47FXBX4/8 devices are a family of buffered voltage output Digital-to-Analog Converters (DAC), with the following options:

• quad or octal output channel configurations
• 8/10/12-bit resolution
• Volatile or nonvolatile user memory

The quad and octal options differ only by the number of output channels. The volatile and nonvolatile versions have an identical analog circuit structure.

There are three voltage reference sources: the external V_REF pin, the device’s V_DD or an internal band gap voltage source.

When the V_DD mode is selected, it is internally connected to the DAC’s reference circuit. When the external VREF pin is used, the user has the option to select between a gain of 1 and 2 if the Buffered mode is used, or the internal buffer can be bypassed entirely in the external V_REF Unbuffered mode.

In the internal band gap voltage reference mode, the gain can be selected between 2 and 4.

This family of devices features WiperLock functionality, which prevents inadvertent changes of the output value. It uses a high voltage on a specific pin, with dedicated commands, to lock the values that are stored in memory.

The MCP47FXBX4/8 devices communicate with the host controller using an I²C compatible interface, supporting the following data transfer rates: Standard (100 kHz), Fast (400 kHz) and High-Speed (1.7 MHz and 3.4 MHz). They can only function as slave devices.

• Set Point or Offset Trimming
• Sensor Calibration
• Low-Power Portable Instrumentation
• PC Peripherals
• Data Acquisition Systems
• Motor Control