LTC2632CTS8-HI12

Overview

The LTC2632CTS8-HI12 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 for the standard grade, rail-to-rail output buffers, and a power-on reset function that sets outputs to mid-scale in internal reference mode.

Feature Summary

• Dual 12-bit DACs with integrated 4.096V precision reference (10ppm/°C drift)
• Rail-to-rail output buffers with guaranteed monotonicity
• 3-wire SPI/MICROWIRE serial interface supporting clock rates 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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm availability and lead times. Ensure the component meets the required automotive or commercial temperature grades for the intended application environment. Cross-reference the pinout and electrical characteristics with the official datasheet prior to integration.

Selection Notes

Select this model when a 4.096V full-scale output is required with an internal reference. The H-grade designation indicates operation within a 4.5V to 5.5V supply range, distinguishing it from the L-grade variants which support lower voltages. Consider the HI12 suffix for mid-scale power-on reset behavior if downstream circuitry sensitivity during initialization is a concern.

Part Context

This component belongs to the LTC2632 family of dual DACs available in 12-, 10-, and 8-bit resolutions. Variants are distinguished by their full-scale voltage (2.5V or 4.096V), power-on reset behavior (zero-scale or mid-scale), and accuracy grades. The CTS8 package denotes the commercial temperature range (0°C to 70°C) in an 8-lead TSOT-23 form factor.

Replacement Considerations

Direct substitutes within the same family include the LTC2632CTS8-LI12 for lower voltage applications (2.7V–5.5V) or the LTC2632CTS8-HZ12 if zero-scale power-on reset is preferred. Verify that any replacement maintains the required 4.096V full-scale output and 12-bit resolution.