LTC2632CTS8-LI12#TRPBF

Overview

The LTC2632CTS8-LI12#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 providing a 2.5V full-scale output with a temperature coefficient of 10ppm/°C. The device operates on a single supply ranging from 2.7V to 5.5V and communicates via a 3-wire SPI/MICROWIRE compatible interface supporting clock rates up to 50MHz. Key specifications include rail-to-rail output buffers, guaranteed monotonicity, and a power-on reset function that initializes outputs to mid-scale in internal reference mode.

Feature Summary

• Dual 12-bit DACs with integrated 2.5V full-scale reference (10ppm/°C drift)
• SPI/MICROWIRE compatible 3-wire serial interface with 50MHz clock rate
• Rail-to-rail output buffers with guaranteed monotonic operation
• Power-on reset to mid-scale in internal reference mode

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF indicates a tape and reel quantity of 2,500 pieces. Confirm the 'C' grade corresponds to the commercial temperature range of 0°C to 70°C. Ensure the LI12 designation matches the required 2.5V full-scale voltage and mid-scale power-on reset behavior for the target application design.

Selection Notes

Select this part when a dual-channel solution with an integrated low-drift reference is required in a compact TSOT-23 package. The 2.7V to 5.5V supply range suits single-supply applications. Choose the 'LI' variant specifically if mid-scale initialization upon power-up is necessary for system safety or downstream circuit compatibility.

Part Context

This component belongs to the LTC2632 family, which offers various resolutions (8, 10, 12-bit) and full-scale voltages (2.5V or 4.096V). The 'L' suffix denotes the 2.5V internal reference option, while 'H' denotes 4.096V. The 'A' electrical grade, present in similar parts like LTC2632ACTS8-LI12, specifies tighter linearity (±1.5LSB INL), whereas standard grade parts may have wider tolerances.

Replacement Considerations

Direct pin-compatible replacements within the same package include other LTC2632 variants such as LTC2632CTS8-LZ12#TRPBF (zero-scale reset) or LTC2632CTS8-HI12#TRPBF (4.096V reference, higher supply requirement). Verify that the replacement's power-on reset state and reference voltage align with the existing circuit design.