LTC2632AHTS8-LX12#TRMPBF

Overview

The LTC2632AHTS8-LX12#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 2.5V and a temperature coefficient of 10ppm/°C. The device operates on a single supply voltage ranging from 2.7V to 5.5V and communicates via a 3-wire SPI/MICROWIRE compatible interface supporting clock rates up to 50MHz. Key electrical specifications include a maximum integral nonlinearity (INL) error of ±1.5LSB, a settling time of 4.4µs at 3V, and a typical supply current of 0.4mA at 3V. The part includes power-on reset functionality configured to mid-scale in external reference mode.

Feature Summary

• Dual 12-bit DACs with rail-to-rail output buffers and guaranteed monotonicity
• Integrated 2.5V full-scale reference with 10ppm/°C temperature coefficient
• Maximum INL error of ±1.5LSB for high accuracy applications
• Power-on reset to mid-scale in external reference mode

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 packaging configuration as defined in the manufacturer's documentation. Confirm that the LX suffix corresponds to the external reference power-on reset mode and the L designation matches the 2.7V to 5.5V supply range requirements for the target application design.

Selection Notes

Select this component when a dual-channel 12-bit DAC with low drift is required within a compact TSOT-23 footprint. Ensure the system supply voltage remains between 2.7V and 5.5V. Choose this variant over the H-series if the application requires operation below 4.5V, as the H-series minimum supply is 4.5V. Verify compatibility with the 3-wire serial interface timing constraints, specifically the 50MHz SCK frequency limit.

Part Context

This part 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 'A' grade denotes improved linearity performance compared to standard grades. The HTS8 package identifies the automotive-grade temperature range (-40°C to 125°C) and the TSOT-23 physical form factor.

Replacement Considerations

Direct substitutes within the same family include LTC2632ACTS8-LI12#TRMPBF (internal reference reset) or LTC2632ACTS8-LZ12#TRMPBF (zero-scale reset). For higher resolution needs, consider the LTC2641 series. Cross-model replacements require verification of pinout compatibility and supply voltage ranges.