MAX528CAG+

The MAX528CAG+ is an octal, 8bit, serial digital to analogue converter (DAC) in 24 pin SSOP package. This monolithic device combines DAC, 8 output buffers and serial interface logic. Three output modes are serially programmable for each pair of 8 analogue outputs. An unbuffered mode connects internal R-2R DAC network directly to output pin, reducing power consumption and avoiding buffer's DC errors. A full buffered mode inserts buffer between R-2R network and output which provides +5mA/-2mA output drive. Half buffered output mode is similar but uses less power while still providing up to 15mA of output drive in unipolar output configuration. Serial data can be daisy chained from one device to other. on power up, all data bits are set to 0 and analogue outputs enter unbuffered mode. The MAX528 is used in digital calibration, digital gain and offset adjustment, microcontroller analogue outputs and multiple trim pot replacement.

• Supply voltage range is 10.8V to 16.5V (unbuffered and full buffered mode)
• Shutdown pin reduces current consumption to under 50µA which retains all internal DAC data
• Eight buffered non inverting outputs, supports 3-wire serial interface
• Operates from single supply up to 15V or split supplies up to 20V (+5V/-15V, +12V/-5V and +15V/-5V)
• Buffer disable control and low power shutdown mode
• Two pairs of differential reference inputs, operating temperature range from 0°C to 70°C
• Full scale error of ±1/2LSB (Unbuffered mode) and gain error of -0.2% (full buffered mode)
• Stable driving output capacitance loads
• Relative accuracy of ±0.3LSB (unbuffered and full buffered mode)
• DNL of ±0.3LSB (unbuffered and full buffered mode)

Applications

Signal Processing

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party