MAX509ACAP

Digital To Analog Converters Overview

The MAX509ACAP+ is a quad, serial-input, 8-bit voltage-output digital-to-analog converter (DAC) housed in a 20-pin SSOP package. It operates with a single +5V supply or dual ±5V supplies. The device features internal precision buffers that swing rail-to-rail and four separate reference inputs for independent full-scale range setting per DAC. It utilizes a double-buffered serial interface compatible with SPI, QSPI, and Microwire protocols, supporting clock frequencies up to 10MHz. The component guarantees a Total Unadjusted Error (TUE) of ±1 LSB within the commercial temperature range of 0°C to +70°C.

Digital To Analog Converters Feature Summary

• Quad 8-bit resolution with calibrated offset, gain, and linearity (±1 LSB TUE)
• Rail-to-rail output buffer amplifiers
• Independent reference inputs for each DAC channel
• Double-buffered registers for synchronous updating via LDAC or software commands

Digital To Analog Converters Applications

• Industrial process control systems requiring multi-channel signal generation
• Programmable power supplies with independent channel regulation
• Data acquisition systems utilizing serial bus architectures

Digital To Analog Converters Procurement Notes

Verify the specific suffix 'ACAP+' against the manufacturer's current ordering guide to confirm lead-free/RoHS compliance status and package availability. Confirm the operating temperature range matches the application requirements, as other variants exist for extended ranges. Cross-reference the datasheet revision date to ensure timing specifications remain valid for the design.

Digital To Analog Converters Selection Notes

Select this part when four independent 8-bit DAC channels are required with rail-to-rail output capability. Ensure the system supports the specified serial interface modes (CPOL=0, CPHA=0 for standard SPI). Verify that the reference source impedance is low enough (≤32Ω) to maintain linearity given the code-dependent input impedance. Consider the MAX510 if shared reference inputs between pairs of DACs are acceptable to reduce pin count.

Digital To Analog Converters Part Context

The MAX509 belongs to the Maxim Integrated MAX509/MAX510 family of quad serial DACs. The 'A' grade indicates ±1 LSB total unadjusted error, while 'C' denotes the commercial temperature range. The 'AP' suffix specifies the 20-lead SSOP package. This series provides a space-saving solution for applications needing multiple analog outputs controlled via standard microprocessor serial buses.

Digital To Analog Converters Replacement Considerations

Direct replacement options include the MAX509BCAP+ for relaxed accuracy requirements (±1.5 LSB TUE) or the MAX509AEPP+ for through-hole mounting needs. Verify pin compatibility and electrical characteristics before substituting.