MCP48CVB28T-20E/ST

Digital To Analog Converters Overview

The MCP48CVB28T-20E/ST is an octal-channel, 12-bit Digital-to-Analog Converter (DAC) manufactured by Microchip Technology. It features volatile memory and utilizes a serial Peripheral Interface (SPI) for communication. The device operates within a supply voltage range of 2.7V to 5.5V, with reduced specifications available between 1.8V and 2.7V. It provides buffered voltage outputs with selectable gain options of 1x or 2x. The component supports reference sources including VDD, external VREF, or an internal band gap. It is housed in a 20-lead TSSOP package and is rated for extended industrial temperature ranges from -40°C to +125°C.

Digital To Analog Converters Feature Summary

• Octal configuration providing eight independent buffered voltage output channels.
• SPI-compatible serial interface supporting write speeds up to 50 MHz.
• Configurable power-down modes allowing high-impedance output or pull-down resistor selection.
• Integrated Power-on Reset and Brown-out Reset protection circuits.

Digital To Analog Converters Applications

• Set point or offset trimming
• Sensor calibration
• Low-power portable instrumentation
• Data acquisition systems
• Motor control

Digital To Analog Converters Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature grade. Ensure the SPI interface mode matches the system controller requirements. Confirm that the volatile memory architecture aligns with the application's need for state retention during power cycles. Validate supply voltage compatibility with the selected reference source configuration.

Digital To Analog Converters Selection Notes

Select this component when multiple analog outputs are required in a compact form factor. The octal channel count distinguishes it from quad-channel variants. Consider the SPI speed requirements, as write operations support up to 50 MHz. Evaluate the power consumption characteristics if operating in low-voltage regimes below 2.7V. Ensure the design accommodates the necessary decoupling for the SPI pins and DAC outputs.

Digital To Analog Converters Part Context

This part belongs to the MCP48CXBX4/8 family of digital-to-analog converters. The 'C' indicates volatile memory, while 'B28' specifies the octal channel count and 12-bit resolution. The 'T' denotes tape and reel packaging, and '/ST' identifies the 20-lead TSSOP package. This family shares architectural similarities with nonvolatile MTP variants but lacks persistent storage capabilities.

Digital To Analog Converters Replacement Considerations

MCP48CVB28-E/ST

Digital To Analog Converters FAQ

What is the maximum SPI clock frequency for write operations?

The device supports write speeds of up to 50 MHz when operating within the standard voltage range of 2.7V to 5.5V.

How does the device handle power loss regarding output states?

Due to its volatile memory architecture, the DAC registers do not retain data after power loss. The device includes Power-on Reset (POR) and Brown-out Reset (BOR) circuits to ensure reliable initialization.

Can the output gain be adjusted dynamically?

Yes, the device offers selectable unity (1x) or 2x gain options. When using the 2x gain setting, the VREF pin voltage must be limited to a maximum of VDD/2.