The MAX5705BAUB+ is an ultra small, single channel, 12bit buffered output voltage DAC with internal reference and SPI interface in 10 pin μMAX package. This DAC include output buffers and a selectable internal reference 2.048V, 2.5V or 4.096V voltages. A precision external reference input allows rail to rail operation and a 100Kohm load to an external reference. It has a 50MHz, 3-wire SPI/QSPI/MICROWIRE/DSP compatible serial interface. On power-up, the device reset the DAC outputs to zero providing additional safety for applications that drive valves or other transducers which need to be off on power-up. The internal reference is initially powered down to allow use of an external reference. Typical applications include programmable voltage and current sources, gain and offset adjustment, automatic tuning and optical control, power amplifier control and biasing, process control and servo loops, data acquisition.
- Wide supply voltage range of 2.7V to 5.5V with extremely low power consumption of less than 1mW
- Operating temperature range from -40°C to 125°C
- Integral nonlinearity is ±0.5LSB and differential nonlinearity is ±0.2LSB
- Low supply current of 155μA (typical at 3V)
- Gain error is ±0.1%FS and low offset error of ±0.5mV
- Settling time is 6.3μs
- Output directly drives 2Kohm loads
- Flexible 1.8V to 5.5V VDDIO
- User configurable asynchronous I/O functions
- Three software selectable power-down output impedances 1Kohm, 100Kohm or high impedance
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