DAC7545LU

Digital To Analog Converters Overview

The DAC7545LU is a CMOS, 12-bit multiplying digital-to-analog converter manufactured by Texas Instruments. It features input data latches and operates on a single +5V to +15V supply. The device utilizes laser-trimmed thin-film resistors for true 12-bit integral and differential linearity. It is housed in an SO-20 package and specified over the commercial temperature range of -40°C to +85°C. Key electrical characteristics include a typical gain temperature coefficient of 2ppm/°C, maximum output leakage current of 10nA, and maximum output capacitance of 70pF. The part is classified as active with a transport quantity of 38 units per rail.

Digital To Analog Converters Feature Summary

• Supports four-quadrant multiplication capabilities
• Ensures monotonicity across the full operating temperature range
• Compatible with TTL and CMOS logic levels

Digital To Analog Converters Applications

• Digitally controlled gain blocks
• Microprocessor interface systems
• Battery-powered low-power applications

Digital To Analog Converters Procurement Notes

Verify the specific ordering suffix LU against the manufacturer's latest documentation to confirm the package type and accuracy grade. Confirm the active status and availability through authorized distribution channels prior to design finalization.

Digital To Analog Converters Selection Notes

Select this component when a 12-bit resolution with parallel interface and multiplying functionality is required. Ensure the application voltage range aligns with the +5V to +15V specification and that the SO-20 package fits the board layout constraints.

Digital To Analog Converters Part Context

This device belongs to the DAC7545 series of multiplying DACs. It serves as a direct replacement for legacy parts such as the AD7545 and PM-7545. The series offers various accuracy grades and packaging options to suit different performance and cost requirements.

Digital To Analog Converters Replacement Considerations

The datasheet identifies the AD7545 and PM-7545 as direct replacements. Verify pin compatibility and parameter alignment before substitution.

Digital To Analog Converters FAQ

Is the DAC7545LU guaranteed to be monotonic?

Yes, the DAC7545LU is ensured to be monotonic over the entire operating temperature range.

What is the power dissipation at VDD = +5V?

Power dissipation is less than 0.5mW when used with CMOS logic inputs and VDD = +5V.

How is the MSB handled in bipolar operation?

In bipolar operation using binary two's complement code, the MSB (DB11) can be inverted via an external inverter or software to convert to offset binary code.