LTC2640AITS8-HM12#TRPBF

Overview

The LTC2640AITS8-HM12#TRPBF is a single-channel, 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference providing a full-scale output of 4.096V and operates within a supply voltage range of 4.5V to 5.5V. The device utilizes a SPI/MICROWIRE compatible 3-wire serial interface with clock rates up to 50MHz. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±1LSB, a settling time of 4.2µs at 5V, and a typical supply current of 200µA. It incorporates a power-on reset circuit configured to set the output to mid-scale upon initialization.

Feature Summary

• 12-bit resolution with ±1LSB maximum INL error
• Integrated 4.096V precision reference with 10ppm/°C drift
• SPI/MICROWIRE 3-wire serial interface supporting 50MHz clocks
• Power-on reset to mid-scale output

Applications

• Mobile communications
• Process control and industrial automation
• Automatic test equipment
• Portable equipment
• Automotive systems

Procurement Notes

Verify the specific suffix #TRPBF indicates a 2,500-piece tape and reel packaging configuration as defined in the manufacturer's ordering guide. Confirm that the H-grade temperature rating (-40°C to 125°C) aligns with the operational environment requirements. Ensure the 4.5V minimum supply voltage constraint is met by the system power rails.

Selection Notes

Select this component when a 12-bit accuracy with ±1LSB INL is required alongside a fixed 4.096V internal reference. The HM suffix designates a mid-scale power-on reset state, which differs from the zero-scale reset option. This part requires a supply voltage between 4.5V and 5.5V, distinguishing it from the L-grade variants that support lower voltages down to 2.7V.

Part Context

This device belongs to the LTC2640 family of single-channel DACs available in 8-, 10-, and 12-bit resolutions. The 'A' designation specifies the highest accuracy grade with ±1LSB INL for the 12-bit version. The 'I' suffix denotes the industrial temperature range (-40°C to 85°C), while the 'H' suffix indicates the extended automotive range (-40°C to 125°C). The TSOT-23 package provides a compact footprint for space-constrained designs.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source documentation.