DAC7545JU

Digital To Analog Converters Overview

The DAC7545JU 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. Power dissipation is less than 0.5mW at VDD = +5V with CMOS logic inputs.

Digital To Analog Converters Feature Summary

• Supports four-quadrant multiplication capabilities
• Ensures monotonicity over the full operating temperature range
• Compatible with TTL and CMOS logic levels
• Features low output leakage and capacitance specifications

Digital To Analog Converters Applications

• Battery-powered applications requiring low power consumption
• Digitally controlled gain blocks using external operational amplifiers
• Microprocessor interfaces utilizing parallel data loading

Digital To Analog Converters Procurement Notes

Verify the specific grade accuracy requirements against the datasheet table, as the JU suffix corresponds to a ±2 LSB accuracy grade. Confirm that the SO-20 package dimensions match the target PCB footprint. Ensure the design accounts for the specified operating temperature range of -40°C to +85°C. Check for any updates regarding production status or recommended replacements on the manufacturer's website before finalizing orders.

Digital To Analog Converters Selection Notes

Select this component when a 12-bit resolution with multiplying functionality is required in a compact surface-mount package. Consider the ±2 LSB accuracy grade if higher precision grades like GLU are not necessary for cost optimization. Evaluate the need for external offset and gain adjustment circuits based on the specific gain error specifications provided for the J grade. Ensure the application can accommodate the code-dependent output capacitance variations.

Digital To Analog Converters Part Context

The DAC7545 belongs to a family of CMOS multiplying DACs designed for microprocessor compatibility. It serves as a direct replacement for older industry standard devices such as the AD7545 and PM-7545. The device architecture uses R-2R ladder networks with CMOS voltage switches to achieve high linearity and low power consumption suitable for portable and industrial control systems.

Digital To Analog Converters Replacement Considerations

The datasheet identifies the AD7545 and PM-7545 as direct replacements or predecessors. For improved performance, the LTC7545AKSW#PBF is noted as a superior pin-compatible replacement offering better accuracy and stability.