LTC2632HTS8-HI12#TRPBF

Overview

The LTC2632HTS8-HI12#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) of ±2.5LSB, a settling time of 4.9µs at 5V, and rail-to-rail output buffers. The part is designed for the automotive temperature range of –40°C to 125°C.

Feature Summary

• Dual 12-bit DACs with integrated 4.096V precision reference (10ppm/°C)
• Automotive temperature grade (-40°C to 125°C) in 8-lead TSOT-23 package
• SPI/MICROWIRE compatible 3-wire serial interface operating up to 50MHz
• Power-on reset to mid-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 #TRPBF indicates a tape and reel quantity of 2,500 pieces. Confirm that the HI designation requires a supply voltage between 4.5V and 5.5V, as this differs from the LI variant which supports lower voltages. Ensure the automotive temperature grade meets the environmental requirements of the target application.

Selection Notes

Select this component when a dual-channel DAC with high accuracy and low drift is required in a compact surface-mount package. The HI suffix specifies a 4.096V full-scale output, necessitating a minimum supply voltage of 4.5V. For applications requiring zero-scale power-on reset, consider the HZ suffix instead. Verify that the 50MHz serial clock speed is compatible with the host microcontroller's capabilities.

Part Context

This part belongs to the LTC2632 family of dual DACs, which offers various combinations of resolution (8-, 10-, or 12-bit), reset modes, and full-scale voltages. The HTS8 designation identifies the automotive temperature grade (H), TSOT-23 package (TS8), and 12-bit resolution (12). Other variants include commercial grades (C) and different reset configurations (I for mid-scale, Z for zero-scale).

Replacement Considerations

Direct substitutes within the same family include LTC2632ACTS8-HI12#TRMPBF (commercial grade, 500-piece reel) or LTC2632HIS8-HI12#TRPBF if pin-compatible packages are available. Cross-family replacements require matching resolution, interface type, and supply voltage constraints.