LTC2640HTS8-HM12#TRMPBF

Overview

The LTC2640HTS8-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 SPI/MICROWIRE compatible 3-wire serial interface with clock rates up to 50MHz. Key electrical characteristics include a maximum integral nonlinearity (INL) error of ±2.5 LSB, a typical settling time of 4.6µs at ±1LSB, and a power-down current of 4µA maximum. It is housed in an 8-lead TSOT-23 package and supports operation from –40°C to 125°C.

Feature Summary

• Integrated 10ppm/°C precision reference yielding a 4.096V full-scale output
• SPI/MICROWIRE compatible 3-wire serial interface supporting up to 50MHz clock rates
• Power-on reset to mid-scale configuration for consistent system initialization
• Rail-to-rail output buffer guaranteed monotonic over temperature

Applications

• Process control and industrial automation systems
• Portable equipment requiring low power consumption
• Automatic test equipment
• Optical networking applications

Procurement Notes

Verify the H-grade designation confirms the automotive temperature range of –40°C to 125°C and the specific 4.5V to 5.5V supply requirement. Confirm the #TRMPBF suffix indicates a 500-piece tape and reel packaging quantity. Ensure the HM12 suffix corresponds to the 12-bit resolution and mid-scale power-on reset behavior as defined in the manufacturer's ordering guide.

Selection Notes

Select this component when a 4.096V internal reference is required alongside a 12-bit resolution. The H-grade is necessary for environments exceeding 85°C. Compare against the LZ variant if a zero-scale power-on reset is preferred instead of mid-scale. Verify that the 4.5V minimum supply voltage aligns with the system power architecture, as the L-grade supports lower voltages down to 2.7V.

Part Context

This part belongs to the LTC2640 family of single-channel DACs available in 8-, 10-, and 12-bit resolutions. The HTS8 suffix denotes the 8-lead ThinSOT (TSOT-23) plastic package. The HM12 identifier specifies the 12-bit resolution combined with the mid-scale power-on reset option. The H temperature grade distinguishes it from commercial (C) and industrial (I) grades by extending the operating range to 125°C.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material.