LTC2640ITS8-HM10#TRPBF

Overview

The LTC2640ITS8-HM10#TRPBF is a single-channel, 10-bit voltage-output digital-to-analog converter (DAC) from Analog Devices. It features an integrated precision reference with a full-scale output of 4.096V and operates on a 4.5V to 5.5V supply. The device includes a rail-to-rail output buffer guaranteed monotonic over temperature. It utilizes a 3-wire SPI/MICROWIRE compatible serial interface with clock rates up to 50MHz. Key electrical parameters include a typical settling time of 4.2µs at ±1LSB, a maximum integral nonlinearity (INL) of ±1LSB, and a power-down current of 4µA maximum. The component is housed in an 8-lead TSOT-23 package.

Feature Summary

• Integrated 10ppm/°C precision reference providing a 4.096V full-scale output
• Rail-to-rail output buffer guaranteed monotonic over the operating temperature range
• SPI/MICROWIRE compatible 3-wire serial interface supporting clock rates up to 50MHz
• Power-on reset circuit configured to set output to mid-scale upon initialization

Applications

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

Procurement Notes

Verify that the specific suffix HM10 corresponds to the H-grade automotive temperature range (-40°C to 125°C), 10-bit resolution, mid-scale power-on reset, and 4.096V internal reference configuration. Confirm the TRPBF designation indicates a tape and reel packaging format. Ensure compatibility with the required supply voltage range of 4.5V to 5.5V for specified performance.

Selection Notes

Select this part when a 10-bit resolution with high accuracy (±1LSB INL) is required in a compact 8-lead TSOT-23 package. The H-grade variant is suitable for automotive or high-temperature industrial environments requiring operation up to 125°C. Choose this model over the L-grade if the application demands a higher 4.096V full-scale output rather than 2.5V. Verify that the system power supply can maintain the minimum 4.5V requirement for proper reference and DAC operation.

Part Context

This component belongs to the LTC2640 family of single-channel voltage-output DACs. The family offers various combinations of resolution (8-, 10-, or 12-bit), full-scale voltage (2.5V or 4.096V), and power-on reset behaviors (zero or mid-scale). The ITS8-HM10#TRPBF specifically denotes the Industrial/Automotive grade (H), 10-bit resolution, Mid-scale reset, and Tape & Reel packaging.

Replacement Considerations

Direct replacements within the same family include LTC2640ITS8-LM10#TRPBF for lower temperature ranges or different full-scale voltage, and LTC2640ITS8-HZ10#TRPBF if zero-scale reset is preferred. Cross-family replacements require verification of pinout compatibility, resolution, and reference architecture.