LTC2632HTS8-HI12#TRMPBF

Overview

The LTC2632HTS8-HI12#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 utilizes a 3-wire SPI/MICROWIRE compatible serial interface with clock rates up to 50MHz. Key electrical specifications include a maximum integral nonlinearity (INL) 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)
• Rail-to-rail output buffers with guaranteed monotonicity
• Power-on reset to mid-scale in internal reference mode
• 3-wire SPI/MICROWIRE interface supporting 50MHz clock rates

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRMPBF indicates a 500-piece tape and reel configuration. Confirm that the H-grade designation ensures operation within the –40°C to +125°C automotive temperature range. Ensure the system power supply remains within the 4.5V to 5.5V window required for the HI variant's specified performance.

Selection Notes

Select this part when a dual-channel DAC with high accuracy and low drift is required in a compact footprint. The HI suffix mandates a minimum supply voltage of 4.5V due to the 4.096V internal reference. For applications requiring zero-scale power-up behavior, consider the LZ suffix variants instead. Verify that the 50MHz serial interface speed is compatible with the host microcontroller capabilities.

Part Context

This component belongs to the LTC2632 family of dual DACs, which offers various resolution options (8-, 10-, and 12-bit) and full-scale voltage configurations (2.5V or 4.096V). The HTS8 designation specifies the automotive temperature grade (H), the 8-lead TSOT-23 plastic package (TS8), and the specific pinout/configuration for the HI12 model.

Replacement Considerations

Direct substitutes within the same family include LTC2632ACTS8-HI12#TRMPBF (Commercial grade) or LTC2632HTS8-LI12#TRMPBF (Lower voltage range). Cross-family replacements require verification of pin compatibility, supply voltage ranges, and serial interface timing constraints.