LTC2632HTS8-HZ12#TRPBF

Overview

The LTC2632HTS8-HZ12#TRPBF 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 utilizes 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 ±2.5LSB, a settling time of 4.9µs at 5V, and a supply current of 0.5mA at 5V with the internal reference active.

Feature Summary

• Dual 12-bit DACs with integrated 4.096V precision reference (10ppm/°C drift)
• Automotive temperature grade (-40°C to +125°C) in 8-lead TSOT-23 package
• Power-on reset function clears outputs to zero-scale for consistent initialization
• Rail-to-rail output buffers with guaranteed monotonicity over the full temperature range

Applications

• Mobile communications systems requiring precise signal generation
• Process control and industrial automation instrumentation
• Automatic test equipment needing stable voltage references
• Portable battery-powered equipment with low power constraints
• Automotive electronic control units and sensor interfaces

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates a tape and reel quantity of 2,500 pieces. Confirm that the H-grade designation matches the required 4.5V to 5.5V supply range and automotive temperature specifications. Ensure the Z-power-on reset configuration aligns with system startup requirements where zero-scale output is mandatory.

Selection Notes

Select this part when a dual-channel DAC with high accuracy and automotive reliability is needed. The H-series requires a minimum supply voltage of 4.5V, unlike the L-series which supports 2.7V. The Z-suffix ensures outputs start at zero upon power-up, preventing unintended signals during system boot. Verify that the 50MHz serial interface speed meets the controller's timing capabilities.

Part Context

This component belongs to the LTC2632 family of dual DACs, which offers various combinations of resolution (8, 10, or 12 bits), full-scale voltages (2.5V or 4.096V), and power-on reset behaviors. The HTS8-HZ12 variant specifically targets automotive applications with its extended temperature range and zero-scale reset feature, distinguishing it from commercial C-grade parts or mid-scale reset variants.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Cross-model selection within the LTC2632 family requires matching the supply voltage range (H vs. L), temperature grade (H vs. C), and power-on reset behavior (Z vs. I/X).