MAX528EWG+

The MAx528/MAX529 are monolithic devices combining an octal 8-bit, digital-to-analog converter (DAC), 8 output buffers, and serial-interface logic in a space-saving shrink small outline package (SSOP). The MAx528 operates from a single supply up to 15V or from split supplies totaling up to 20V, including +5V/-15V, +12V/-5V and +15V/-5V. The MAx529 operates from a single +5V supply or from ±5V split supplies. For both parts, a shutdown pin reduces current consumption to under 50μA while retaining all internal DAC data. Three output modes are serially programmable for each pair of 8 analog outputs. An unbuffered mode connects the internal R-2R DAC network directly to the output pin, reducing power consumption and avoiding the buffer's DC errors. A full-buffered mode inserts a buffer between the R-2R network and the output, providing +5mA/-2mA output drive. Half-buffered output mode is similar, but uses less power while still providing up to 15mA of output drive in a unipolar output configuration. Serial data can be "daisy-chained" from one device to another. On power-up, all data bits are reset to 0, and analog outputs enter the unbuffered mode.

Applications

• Digital Gain and Offset Adjustment
• Digital Calibration
• Multiple Trim Pot Replacement
• Microcontrolled Analog Outputs

Key features

• Now Available in Space-Saving SSOP
• 8 Buffered Noninverting Outputs
• Buffer Disable Control
• 2 Pairs of Differential Reference Inputs
• 3-Wire Serial Interface
• Single +5V or Dual ±5V Supply Operation (MAX529)
• Low-Power Shutdown
• Stable Driving Output Capacitance Loads