LTC2632AHTS8-HZ12#TRMPBF

Overview

The LTC2632AHTS8-HZ12#TRMPBF is a dual 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices, housed in an 8-lead TSOT-23 package. It features an integrated precision reference with a full-scale output of 4.096V and a temperature coefficient of 10ppm/°C. The device operates on a single supply voltage ranging from 4.5V to 5.5V. It supports a 3-wire SPI/MICROWIRE compatible serial interface with clock rates up to 50MHz. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±1.5LSB, a settling time of 4.9µs at 5V, and rail-to-rail output buffers. The part is guaranteed monotonic and includes power-on reset functionality that clears outputs to zero-scale.

Feature Summary

• Dual 12-bit DACs with integrated 4.096V precision reference (10ppm/°C)
• Maximum INL error of ±1.5LSB for high accuracy
• SPI/MICROWIRE compatible 3-wire serial interface operating up to 50MHz
• Power-on reset to zero-scale in internal reference mode

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRMPBF indicates a 500-piece tape and reel quantity. Confirm the H-grade designation corresponds to the automotive temperature range (-40°C to 125°C) and the 4.5V to 5.5V supply requirement. Ensure compatibility with the 8-lead TSOT-23 package dimensions for PCB layout.

Selection Notes

Select this part when a dual-channel DAC with high linearity (±1.5LSB INL) and an integrated low-drift reference is required. The H-series variant is necessary for applications requiring a 4.096V full-scale output and operation within the -40°C to 125°C temperature range. The Z-suffix ensures outputs initialize to zero-scale upon power-up, which is critical for systems sensitive to initial DAC states.

Part Context

This component belongs to the LTC2632 family of dual DACs. Variants differ by resolution (8, 10, or 12-bit), full-scale voltage (2.5V for L-series, 4.096V for H-series), and power-on reset behavior (I for mid-scale, Z for zero-scale). The A-grade denotes the highest accuracy class with ±1.5LSB max INL. The HTS8 package identifies the 8-lead TSOT-23 form factor with automotive temperature grading.

Replacement Considerations

Direct substitutes within the same family include LTC2632ACTS8-HI12#TRMPBF (mid-scale reset) or LTC2632ACTS8-LZ12#TRMPBF (2.5V FSR, commercial grade). Cross-family replacements require matching 12-bit resolution, dual channel configuration, and SPI interface compatibility.