LTC2631HTS8-LZ10#TRPBF

Overview

The LTC2631HTS8-LZ10#TRPBF is a single-channel, 10-bit voltage-output digital-to-analog converter (DAC) manufactured by Analog Devices Inc. It features an integrated precision reference with a full-scale output of 4.096V and operates within a supply voltage range of 4.5V to 5.5V. The device utilizes a 2-wire I²C-compatible serial interface supporting standard (100kHz) and fast (400kHz) modes. Key electrical characteristics include a maximum Integral Nonlinearity (INL) error of ±1 LSB, a typical settling time of 4.2µs at ±1 LSB for 10-bit resolution, and low power consumption of approximately 200µA at 5V. The part includes a power-on reset circuit configured to clear the output to zero-scale upon initialization.

Feature Summary

• Integrated 4.096V precision reference with ±10ppm/°C temperature coefficient
• I²C interface with selectable slave addresses via CA0 and CA1 pins
• Power-on reset to zero-scale for consistent system initialization
• Rail-to-rail buffered output guaranteed monotonic over temperature

Applications

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

Procurement Notes

Verify that the specific ordering suffix corresponds to the H-grade temperature range (-40°C to 125°C) and the LZ10 configuration (Zero-scale reset, 10-bit resolution, 4.096V full scale). Confirm the package type is TSOT-23-8 and the delivery format matches the TRPBF designation. Cross-reference the manufacturer's current datasheet revision to ensure pinout and electrical specifications remain unchanged from the source documentation.

Selection Notes

Select this component when a 10-bit resolution with a 4.096V internal reference is required in a compact TSOT-23 package. Ensure the system supply voltage remains between 4.5V and 5.5V, as lower voltages are not supported for the H-grade variant. Choose this part over the L-grade if operation in automotive or high-temperature environments up to 125°C is necessary. Verify that the I²C bus speed requirements do not exceed 400kHz.

Part Context

This part belongs to the LTC2631 family of single-channel DACs, which also includes 8-bit and 12-bit variants. The 'H' suffix denotes the automotive temperature grade (-40°C to 125°C), distinguishing it from the Commercial (C) and Industrial (I) grades. The 'LZ10' code specifies the 4.096V full-scale range, zero-scale power-on reset behavior, and 10-bit resolution. It shares the same physical footprint and interface logic as other members of the series, facilitating design flexibility across different accuracy and voltage requirements.

Replacement Considerations

Direct substitutes within the same family include the LTC2631HTS8-LM10#TRPBF (mid-scale reset) or LTC2631HTS8-HZ10#TRPBF (12-bit resolution). For 8-bit resolution, consider the LTC2631HTS8-LZ8#TRPBF. If a different reset state is acceptable, the LM10 variant offers identical electrical performance with mid-scale initialization. Ensure any replacement maintains the H-grade temperature rating and 4.096V full-scale output capability.