LTC2640ACTS8-HM12#TRMPBF

Overview

The LTC2640ACTS8-HM12#TRMPBF 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 3-wire SPI/MICROWIRE compatible serial interface with clock rates up to 50MHz. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±1 LSB, a settling time of 4.6µs at 5V, and a typical supply current of 200µA. It incorporates a power-on reset circuit that initializes the output to mid-scale.

Feature Summary

• Integrated 10ppm/°C precision reference with 4.096V full-scale output
• Maximum INL error of ±1 LSB for high accuracy applications
• Power-on reset to mid-scale ensures consistent system initialization
• Low power consumption with 200µA typical supply current

Applications

• Process control and industrial automation systems
• Portable battery-powered equipment
• Automatic test equipment
• Mobile communications infrastructure

Procurement Notes

Verify the specific ordering suffix #TRMPBF indicates a 500-piece tape and reel packaging quantity. Confirm the H-grade temperature rating (-40°C to 125°C) matches the operational environment requirements. Ensure the 4.5V minimum supply voltage aligns with the system power architecture.

Selection Notes

Select this component when a 12-bit resolution with ±1 LSB linearity is required in a compact TSOT-23 package. The H-grade variant is suitable for automotive or wide-temperature industrial environments. Consider the 4.096V internal reference if external reference components are to be minimized.

Part Context

This part belongs to the LTC2640 family of single-channel DACs. The 'H' designation specifies the automotive temperature grade (-40°C to 125°C), while 'M' indicates the mid-scale power-on reset option. The '12' suffix confirms the 12-bit resolution, and 'TS8' denotes the 8-lead TSOT-23 package.

Replacement Considerations

Direct replacements within the same family include LTC2640ACTS8-LM12#TRMPBF (2.5V FSR) or LTC2640I-grade variants for lower temperature ranges. Cross-family alternatives like the LTC2641 offer different packages but require interface verification.