LTC2640HTS8-HZ12#TRMPBF

Overview

The LTC2640HTS8-HZ12#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 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 incorporates a power-on reset circuit that clears the DAC output to zero-scale upon initialization.

Feature Summary

• Integrated 10ppm/°C precision reference with 4.096V full-scale output
• 12-bit resolution with guaranteed monotonic operation over temperature
• Power-on reset to zero-scale for consistent system initialization
• Asynchronous CLR pin for immediate hardware reset to zero

Applications

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

Procurement Notes

Verify the specific suffix #TRMPBF indicates a 500-unit tape and reel packaging configuration as defined in the manufacturer's ordering guide. Confirm the H-grade designation corresponds to the automotive temperature range of –40°C to 125°C. Ensure compatibility with the required 4.5V to 5.5V supply voltage constraints before procurement.

Selection Notes

Select this part when a 12-bit resolution with a 4.096V internal reference is required in an 8-lead TSOT-23 package. The H-grade variant is necessary for applications operating between –40°C and 125°C. Choose the Z-suffix version specifically if a zero-scale power-on reset state is mandatory for system safety or initialization sequences.

Part Context

This component belongs to the LTC2640 family of single-channel DACs. The HTS8 identifier denotes the H-grade temperature rating combined with the TSOT-23 surface-mount package. The Z12 suffix specifies the 12-bit resolution and the zero-scale power-on reset behavior. This distinguishes it from M-grade variants which reset to mid-scale and L-grade variants which offer a 2.5V full-scale output.

Replacement Considerations

Direct replacements within the same family include LTC2640HTS8-LZ12#TRMPBF for 2.5V full-scale applications or LTC2640IMS8-HZ12#PBF for DFN packaging. Verify that any substitute maintains the 4.5V minimum supply requirement and the zero-scale reset functionality if critical to the design.