LTC2640ITS8-LM10#TRPBF

Overview

The LTC2640ITS8-LM10#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 2.5V and operates on a single supply ranging from 2.7V to 5.5V. The device utilizes a 3-wire SPI/MICROWIRE compatible interface supporting clock rates up to 50MHz. Key electrical parameters include a typical settling time of 3.8µs at ±1LSB for 10-bit resolution, a maximum integral nonlinearity (INL) of ±1LSB, and a supply current of 180µA at 3V. It incorporates a power-on reset circuit that sets the output to mid-scale upon initialization.

Feature Summary

• Integrated 10ppm/°C precision reference providing a 2.5V full-scale output
• Rail-to-rail output buffer guaranteed monotonic over temperature
• Power-on reset to mid-scale (M suffix) for consistent system initialization
• Low power operation with 180µA supply current and 1.8µA maximum power-down current

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF corresponds to the 2,500-piece tape and reel packaging configuration as defined in the manufacturer's documentation. Confirm that the I-grade temperature rating (-40°C to 85°C) aligns with the operational environment requirements. Ensure compatibility with the 8-lead TSOT-23 package dimensions for PCB layout integration.

Selection Notes

Select this component when a 10-bit resolution with a 2.5V internal reference range is required. The 'I' grade designation indicates suitability for industrial temperature ranges (-40°C to 85°C). Choose this part over the 'Z' variant if a mid-scale power-on reset state is preferred over zero-scale. Verify that the 2.7V minimum supply voltage meets the system's power rail specifications.

Part Context

This part belongs to the LTC2640 family of single-channel DACs available in 8-, 10-, and 12-bit resolutions. The LTS8 package denotes the 8-lead ThinSOT-23 form factor. The LM10 designation specifies the 10-bit resolution, mid-scale power-on reset behavior, and 2.5V full-scale output characteristic derived from the internal reference.

Replacement Considerations

Direct replacements within the same family include the LTC2640ITS8-LZ10#TRPBF for zero-scale reset or the LTC2640ITS8-HM10#TRPBF for 4.096V full-scale output. Cross-family replacements require verification of pinout compatibility and interface timing specifications.