LTC2640HTS8-LZ12#TRPBF

Overview

The LTC2640HTS8-LZ12#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 on a single supply voltage ranging from 4.5V to 5.5V. The device incorporates a rail-to-rail output buffer guaranteed monotonic over temperature. It utilizes a SPI/MICROWIRE compatible 3-wire serial interface with clock rates up to 50MHz. Key specifications include a maximum integral nonlinearity error of ±2.5 LSB, a settling time of 4.6µs at ±1LSB, and power consumption of 200µA at 5V. The unit includes a power-on reset circuit that defaults the output to zero-scale.

Feature Summary

• Integrated 10ppm/°C precision reference with 4.096V full-scale output
• SPI/MICROWIRE compatible 3-wire serial interface supporting up to 50MHz clock
• Rail-to-rail output buffer guaranteed monotonic over temperature
• Power-on reset to zero-scale with low power-down current

Applications

• Mobile Communications
• Process Control and Industrial Automation
• Automatic Test Equipment
• Portable Equipment
• Automotive Systems

Procurement Notes

Verify the specific ordering suffix #TRMPBF versus #TRPBF against official documentation, as these indicate different tape and reel packaging quantities (500 vs 2,500 pieces). Confirm the H-grade temperature range (-40°C to 125°C) matches application requirements. Ensure the 4.5V minimum supply voltage aligns with system power rails. Validate pinout compatibility for the 8-lead TSOT-23 package during PCB layout.

Selection Notes

Select this component when a high-accuracy 12-bit DAC with an integrated reference is required in a compact surface-mount package. The H-grade variant is suitable for automotive or wide-temperature industrial environments requiring operation up to 125°C. Choose the LZ12 suffix if a zero-scale power-on reset state is necessary for system safety. Consider the 4.5V minimum supply constraint; use the LTC2640-L series if operation below 4.5V is needed.

Part Context

This part belongs to the LTC2640 family of single-channel DACs available in 8-, 10-, and 12-bit resolutions. The 'H' designation indicates the Automotive temperature grade (-40°C to 125°C), while 'L' denotes the standard commercial/industrial grade. The 'Z' suffix specifies the power-on reset behavior (Zero-Scale), whereas 'M' would indicate Mid-Scale reset. The 'TS8' identifies the 8-lead ThinSOT (TSOT-23) plastic package.

Replacement Considerations

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