LTC2632AHTS8-LZ12#TRMPBF

Overview

The LTC2632AHTS8-LZ12#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 2.5V and a temperature coefficient of 10ppm/°C. The device operates on a single supply ranging from 2.7V to 5.5V and communicates via a 3-wire SPI/MICROWIRE compatible interface supporting clock rates up to 50MHz. Key electrical specifications include a maximum Integral Nonlinearity (INL) error of ±1.5LSB, a settling time of 4.4µs at 3V, and rail-to-rail output buffers. The part is guaranteed monotonic and includes a power-on reset function that clears the output to zero-scale.

Feature Summary

• Dual 12-bit DACs with integrated 2.5V precision reference (10ppm/°C)
• Maximum INL error of ±1.5LSB for high accuracy
• Rail-to-rail output buffers with 4.4µs settling time
• Power-on reset to zero-scale for consistent initialization

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 corresponds to the automotive temperature range (-40°C to 125°C) as defined in the selection guide. Ensure compatibility with the required 2.7V to 5.5V supply voltage and SPI interface timing constraints before procurement.

Selection Notes

Select this part when a dual-channel 12-bit DAC with low drift and zero-scale power-up behavior is required. The 'A' grade ensures ±1.5LSB INL, superior to standard grades. Choose between internal reference modes ('Z' for zero-scale reset) or external reference configurations based on system initialization needs. Verify that the 8-lead TSOT-23 package fits the PCB layout constraints.

Part Context

This component belongs to the LTC2632 family of dual voltage-output DACs. Variants differ by resolution (8, 10, or 12 bits), full-scale voltage (2.5V or 4.096V), power-on reset behavior (zero or mid-scale), and temperature grade (Commercial or Automotive). The LTC2632AHTS8-LZ12#TRMPBF specifically combines the high-accuracy 'A' grade, automotive 'H' temperature range, and zero-scale reset 'Z' configuration.

Replacement Considerations

Direct substitutes within the same family include LTC2632ACTS8-LZ12#TRMPBF (Commercial grade) or LTC2632ACTS8-HI12#TRMPBF (Mid-scale reset). Cross-family replacements require matching resolution, interface type, and package size.