The AD5790 is a single 20-bit, voltage out Dac that operates from a bipolar supply up to 33V. Reference buffers are also provided on-chip The AD5790 accepts a positive reference input in the range of 5V to VDD – 2.5V and a negative reference input. The AD5790 offers a relative accuracy of +/-2 LSB's max and operation is guaranteed monotonic with a -1 LSB to +3 LSB's DNL specification.
The part uses a versatile 3-wire serial interface that operates at clock rates up to 35 MHz and is compatible with standard SPI®, QSPI™, MICROWIRE™, and DSP interface standards. The part incorporates a power-on reset circuit that ensures the DAC output powers up to 0V and in a known output impedance state and remains in this state until a valid write to the device takes place. The part provides a disable feature that places the output in a defined load state.
- Single 20-bit voltage output DAC, ±2 LSB INL
- 8 nV/Hz output noise spectral density
- 0.1 LSB long term linearity error stability
- ±0.018 ppm/°C gain error temperature coefficient
- 2.5 µs output voltage settling time
- 3.5 nV-sec midscale glitch impulse
- Integrated Precision Reference Buffers
- Operating temperature range: -40°C to +125°C
- 4mm x 5mm LFCSP package
- Wide power supply range of up to ±16.5 V
- 35MHz Schmitt-triggered digital interface
- 1.8 V compatible digital interface
- Applications:
- Medical instrumentation
- Test and measurement
- Industrial control
- Scientific and aerospace instrumentation
- Data acquisition systems
- Digital gain and offset adjustment
- Power supply control
