LTC2632CTS8-HZ8

Overview

The LTC2632CTS8-HZ8 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 typical supply current of 0.5mA at 5V. The part includes a power-on reset function that initializes the outputs to zero-scale.

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 zero-scale for consistent system initialization
• 3-wire SPI/MICROWIRE serial interface supporting clock rates up to 50MHz

Applications

• Mobile communications
• Process control and industrial automation
• Automatic test equipment
• Portable equipment

Procurement Notes

Verify the specific ordering suffix #TRMPBF or #TRPBF against the required packaging quantity (500-piece tape and reel vs. 2,500-piece tape and reel). Confirm the temperature grade 'H' corresponds to the automotive range (-40°C to 125°C) required for the application environment. Ensure the supply voltage remains within the 4.5V to 5.5V range specified for the H-grade variant.

Selection Notes

Select this component when a dual-channel DAC with high accuracy and low drift is required in a compact TSOT-23 package. The H-grade designation indicates suitability for automotive applications requiring operation between -40°C and 125°C. Choose this model over the L-grade if the application requires a higher full-scale output voltage of 4.096V rather than 2.5V. Verify that the system power supply can maintain the minimum 4.5V input voltage necessary for proper operation.

Part Context

The LTC2632CTS8-HZ8 belongs to the LTC2632 family of dual voltage-output DACs. The 'C' denotes the commercial temperature grade (0°C to 70°C), while 'H' in the internal reference configuration typically signifies the automotive grade (-40°C to 125°C); however, the datasheet lists LTC2632C as Commercial and LTC2632H as Automotive. The provided model string combines 'C' and 'H', which may indicate a specific manufacturer coding or a typo in the query; standard datasheet nomenclature distinguishes these grades separately. The 'Z' indicates Power-On Reset to Zero-Scale, and '8' denotes 12-bit resolution.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult Analog Devices directly for cross-reference information regarding alternative components with similar pinouts and specifications.