LTC2632ACTS8-LZ12#TRMPBF

Overview

The LTC2632ACTS8-LZ12#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 rail-to-rail output buffers. The part is guaranteed monotonic and includes a power-on reset function that clears the output to zero-scale.

Feature Summary

• Dual 12-bit DACs with integrated 2.5V precision reference (10ppm/°C drift)
• Maximum INL error of ±1.5LSB for high accuracy applications
• Power-on reset to zero-scale ensures consistent system initialization
• 3-wire serial interface (SPI/MICROWIRE) with SCK frequencies up to 50MHz

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRMPBF indicates a 500-piece tape and reel packaging quantity. Confirm the 'A' grade designation corresponds to the ±1.5LSB maximum INL specification. Ensure the 'L' suffix matches the required 2.7V to 5.5V supply range and 2.5V full-scale output. Check for RoHS compliance status as indicated in the manufacturer's documentation.

Selection Notes

Select this component when a dual-channel DAC with low offset and high linearity is required in a compact TSOT-23 package. The LZ12 variant is appropriate for designs requiring a zero-scale power-on state to prevent transient errors in downstream circuitry. Compare against the HI12 variant if a 4.096V full-scale output and higher minimum supply voltage (4.5V) are acceptable. Consider the external reference mode options if a different full-scale voltage is needed.

Part Context

This part belongs to the LTC2632 family of dual voltage-output DACs. Variants within the family differ by resolution (8, 10, or 12 bits), power-on reset behavior (zero-scale or mid-scale), and internal reference full-scale voltage (2.5V or 4.096V). The ACTS8 designation specifies the Automotive/Commercial temperature grade and the 8-lead TSOT-23 plastic package type.

Replacement Considerations

Direct pin-compatible replacements within the same family include LTC2632ACTS8-LI12#TRMPBF (mid-scale reset) and LTC2632ACTS8-HZ12#TRMPBF (4.096V FS, zero-scale reset). Verify that the alternative part's power-on reset behavior and supply voltage requirements align with the system design constraints.