Analog Devices Inc. AD5791 Voltage Output DACs
Analog Devices AD5791 Single, 20-bit, Unbuffered, Voltage Output DACs operate from a bipolar supply of up to 33V. The AD5791 features 1ppm accuracy, a low 7.5nV/√Hz noise spectral density, and a wide power supply range of up to ±16.5V. The DACs assume a positive reference input in the range of 5V to VDD–2.5V and a negative reference input in the range of VSS +2.5V to 0V. Analog Devices AD5791 provides a relative accuracy specification of ±1LSB max. This operation is guaranteed monotonic with a ±1LSB DNL max specification.
The AD5791 employs a versatile 3-wire serial interface that operates at clock rates up to 35MHz and that is compatible with standard SPI, QSPI™, MICROWIRE™, and DSP interface standards. The device incorporates a power-on reset circuit that ensures the DAC output powers up to 0V. In a known output impedance state, the DACs remain until a valid write to the device takes place. Additionally, the AD5791 offers an output clamp feature that places the output in a defined load state.
Features
- 1ppm resolution
- 1ppm INL
- 7.5nV/√Hz noise spectral density
- 0.19 LSB long-term linearity stability
- <0.05ppm/°C temperature drift
- 1μs settling time
- 20-Lead TSSOP package
- 1.4nV-sec glitch impulse
- Up to ±16.5V wide power supply range
- 35MHz Schmitt triggered digital interface
- 1.8V compatible digital interface
- -55°C to +125°C temperature range
Applications
- Supports defense and aerospace applications (AQEC standard)
- Medical instrumentation
- Industrial control
- Test and measurement
- High-end scientific and aerospace instrumentation
Block Diagram
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Published: 2018-12-19
| Updated: 2023-02-14