MAX512CSD+

Digital To Analog Converters Overview

The MAX512CSD+ is a triple, 8-bit voltage-output digital-to-analog converter (DAC) in a 14-pin SO package. It integrates DAC A and DAC B with buffered outputs capable of sourcing/sinking current, while DAC C provides an unbuffered output for higher accuracy. The device operates on a single +5V supply (±10%) or split supplies. It features a 3-wire serial interface compatible with SPI, QSPI, and Microwire standards, supporting clock frequencies up to 5MHz. Key electrical parameters include 1mA operating current, less than 1µA shutdown current, and ±1 LSB differential nonlinearity.

Digital To Analog Converters Feature Summary

• Triple 8-bit DAC architecture with two buffered outputs (DAC A/B) and one unbuffered output (DAC C).
• 3-wire serial interface compatible with SPI, QSPI, and Microwire protocols at up to 5MHz.
• Ultra-low power consumption: 1mA active current and <1µA shutdown current per channel.
• Flexible supply operation: Single +5V (MAX512) or +2.7V–3.6V (MAX513), plus bipolar supply support.

Digital To Analog Converters Applications

• Digital gain and offset adjustment circuits.
• Programmable attenuators and voltage/current sources.
• RF digitally adjustable bias circuits for GaAs FETs.
• VCO tuning in mobile radios or cellular phones.

Digital To Analog Converters Procurement Notes

Verify the specific suffix 'CSD+' against the manufacturer's latest documentation to confirm pinout compatibility and environmental compliance status. Ensure the design supports the required +5V single-supply range specified for the MAX512 variant. Check for any obsolescence notices or lifecycle changes from Analog Devices/Maxim Integrated prior to finalizing procurement plans.

Digital To Analog Converters Selection Notes

Select this component when three independent 8-bit DAC channels are required in a compact SO-14 package. Choose MAX512CSD+ specifically for +5V single-supply applications; use MAX513 variants for 3V systems. Consider the buffered outputs of DAC A/B for driving loads up to 5mA, or DAC C for high-impedance inputs requiring lower output impedance stability without buffering artifacts.

Digital To Analog Converters Part Context

The MAX512/MAX513 series represents low-cost, triple-channel DAC solutions designed for portable and battery-powered applications. The MAX512CSD+ specifically denotes the commercial temperature range (0°C to +70°C) version housed in a 14-pin Small Outline package. This part belongs to a family optimized for space-saving designs where low power consumption and simple serial interfacing are critical constraints.

Digital To Analog Converters Replacement Considerations

Direct pin-compatible replacements within the same family include other MAX512 suffixes for different packages (e.g., DIP) or temperature ranges (e.g., MAX512E). Verify that any substitute maintains the 3-wire serial protocol compatibility and output drive capabilities if replacing with non-Maxim devices.

Digital To Analog Converters FAQ

What is the maximum source/sink current for the buffered DAC outputs?

DAC A can source or sink up to 5mA, while DAC B can source or sink up to 0.5mA, both maintaining output voltages within 0.5V of the supply rails.

How does the device handle shutdown mode?

Any of the three DACs can be independently shut down. In shutdown mode, the R-2R ladder network disconnects from the reference input, reducing current drain to less than 1µA, while stored register values are retained.

Is the serial interface compatible with standard SPI controllers?

Yes, it is compatible with SPI, QSPI, and Microwire. For SPI/QSPI, set CPOL=0 and CPHA=0 to ensure correct data latching on the rising edge of SCLK.