Calibrated, Quad, Voltage-Output, 12-Bit DAC

The MAX526/MAX527 contain four 12-bit, voltage-output digital-to-analog converters (DACs). Precision output buffer amplifiers are included on-chip to provide voltage outputs. The MAX527 operates with ±5V power supplies, while the MAX526 utilizes -5V and +12V to +15V supplies. Offset, gain, and linearity are factory calibrated to provide the MAX526’s 1LSB total unadjusted error (TUE).

These devices feature double-buffered interface logic with a 12-bit input register and a 12-bit DAC register. Data in the DAC register sets the DAC output voltage. The MAX526/MAX527 have an 8-bit-wide data bus. Data is loaded into the input register using the two write operations with an 8-bit LSB write load and a 4-bit MSB write load. An asynchronous load DAC (active-low LDAC) input transfers data from the input register to the DAC register. All logic inputs are TTL and CMOS compatible.

The MAX526/MAX527 are available in 24-pin, 300 mil plastic DIP, Ceramic SB, and wide SO packages.

Applications

* Arbitrary Function Generators * Automatic Test Equipment * Digital Offset and Gain Adjustment * Industrial Process Controls * Minimum Component Count Analog Systems

* Reference Input Range Includes Ground (C, D grades)

* Full 12-bit Performance Without Adjustments

* 1 LSB Total Unadjusted Error ( MAX526)

* Buffered Voltage Outputs

* fast Output Settling

* 3µs for MAX526

* 5µs for MAX527

* Double-Buffered Digital Inputs

* Microprocessor and TTL/CMOS Compatible

* ±5V supply Operation (MAX527)