MCP4706A0T-E/CH

Digital To Analog Converters Overview

The MCP4706A0T-E/CH is a single-channel, 8-bit buffered voltage output Digital-to-Analog Converter (DAC) manufactured by Microchip Technology. It features an I2C serial interface and integrated nonvolatile EEPROM memory for data retention. The device operates on a single supply voltage ranging from 2.7V to 5.5V. Key electrical specifications include a typical settling time of 6µs, a maximum INL error of ±0.907 LSB, and a DNL error of ±0.05 LSB. It supports Standard (100 kbps), Fast (400 kbps), and High-Speed (3.4 Mbps) I2C modes. The component is housed in a compact 6-lead SOT-23 package and is rated for an extended operating temperature range of -40°C to +125°C.

Digital To Analog Converters Feature Summary

• Integrated nonvolatile EEPROM memory retains DAC register settings and configuration bits during power-off conditions.
• Configurable power-down modes allow selection of VOUT pull-down resistors or buffer disconnection to minimize system current consumption.
• Dual reference voltage options enable the use of either the internal VDD supply or an external VREF pin as the voltage reference source.

Digital To Analog Converters Applications

• Set point or offset trimming in industrial control systems
• Sensor calibration and signal conditioning
• Low-power portable instrumentation
• PC peripherals and data acquisition systems

Digital To Analog Converters Procurement Notes

Verify that the ordering suffix matches the required package type and temperature grade. Confirm the specific address pins are configured correctly for the target I2C bus topology. Ensure the design accounts for the maximum capacitive loading limits specified for the selected I2C communication speed mode.

Digital To Analog Converters Selection Notes

Select this component when an 8-bit resolution is sufficient for the application requirements. Consider the MCP4716 or MCP4726 if higher resolution is needed. Evaluate the available I2C addresses to ensure compatibility with the system bus architecture. Verify that the power supply voltage falls within the specified 2.7V to 5.5V operational range.

Digital To Analog Converters Part Context

This part belongs to the MCP47X6 family of single-channel DACs, which also includes the 10-bit MCP4716 and the 12-bit MCP4726. All members share identical pinouts, interfaces, and core functionalities, differing primarily in their digital resolution and associated accuracy metrics.

Digital To Analog Converters Replacement Considerations

Direct functional replacements within the same family include the MCP4716A0T-E/CH and MCP4726A0T-E/CH. These parts maintain pin compatibility but offer different resolutions. Cross-vendor alternatives require verification of I2C protocol support and voltage levels.

Digital To Analog Converters FAQ

How does the device handle data persistence after a power cycle?

The MCP4706A0T-E/CH utilizes onboard EEPROM to store the DAC register value and configuration bits. Upon a Power-On Reset (POR), these stored values are automatically latched into the volatile DAC register, restoring the previous output state without requiring external initialization.

What are the supported I2C communication speeds?

The device supports three I2C modes: Standard mode at 100 kbps, Fast mode at 400 kbps, and High-Speed mode at 3.4 Mbps. The High-Speed mode requires a supply voltage of at least 4.5V and lower bus capacitance.

Can the output gain be adjusted?

Yes, when an external voltage reference is applied to the VREF pin, the user can select the output buffer gain to be either unity (1x) or double (2x). If VDD is used as the reference, the gain is fixed at unity.