LTC2621IDD#TRPBF

Overview

The LTC2621IDD#TRPBF is a single-channel, 12-bit rail-to-rail voltage output digital-to-analog converter (DAC) from Analog Devices. It operates on a 2.5V to 5.5V supply and features a built-in high-performance output buffer capable of sourcing or sinking at least 15mA. The device utilizes a 3-wire SPI/Microwire compatible serial interface with clock rates up to 50MHz. Key electrical specifications include a settling time of 7µs, differential nonlinearity (DNL) of ±0.5 LSB, and integral nonlinearity (INL) of ±0.8 LSB. It consumes 375µA at 5V and supports power-down modes. The component is housed in a 10-lead 3mm × 3mm DFN package.

Feature Summary

• 12-bit resolution with guaranteed monotonicity over temperature
• Rail-to-rail voltage output with ±15mA drive capability
• 3-wire SPI/Microwire serial interface supporting 50MHz clock
• Low power consumption: 375µA active, 1µA max power-down
• Tiny 10-lead 3mm × 3mm DFN package

Applications

• Mobile communications systems
• Process control and industrial automation
• Instrumentation equipment
• Automatic test equipment

Procurement Notes

Verify the #TRPBF suffix indicates tape and reel packaging for automated assembly. Confirm the IDD suffix corresponds to the -40°C to +85°C industrial temperature range. Ensure the specific part number matches the required lead-free finish and RoHS compliance standards before ordering.

Selection Notes

Select this model for applications requiring a compact, low-power 12-bit DAC with rail-to-rail output swing. It is suitable for designs needing high drive current (±15mA) without external amplifiers. Consider the LTC2621CDD#TRPBF if the application operates within the commercial 0°C to 70°C range, or the LTC2621IDD-1#TRPBF if a mid-scale power-on reset state is required instead of zero-scale.

Part Context

This component belongs to the LTC2601/LTC2611/LTC2621 family of pin-compatible DACs. While the LTC2601 offers 16-bit resolution and the LTC2611 provides 14-bit resolution, the LTC2621 delivers 12-bit performance. All variants share the same 10-lead DFN footprint and functional interface, allowing for design flexibility across different precision requirements.

Replacement Considerations

The LTC2621CDD#TRPBF serves as a commercial grade alternative with identical electrical characteristics but a limited 0°C to 70°C operating range.