The AD5791 is a single 20-bit, unbuffered voltage-output DAC that operates from a bipolar supply of up to 33 V. The AD5791 accepts a positive reference input in the range 5 V to VDD – 2.5V and a negative reference input in the range VSS + 2.5 V to 0 V. The AD5791 offers a relative accuracy specification of ±1 LSB max, and operation is guaranteed monotonic with a ±1 LSB DNL max specification.
The part uses a versatile 3-wire serial interface that operates at clock rates up to 35 MHz and that 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 0 V and in a known output impedance state and remains in this state until a valid write to the device takes place. The part provides an output clamp feature that places the output in a defined load state.
**Product Highlights**
1. 1 ppm Accuracy.
2. Wide Power Supply Range up to ±16.5 V.
3. Operating Temperature Range: −40°C to +125°C.
4. Low 7.5 nV/√Hz Noise Spectral Density.
5. Low 0.05 ppm/°C Temperature Drift.
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Applications*
Medical Instrumentation
Test and Measurement
Industrial Control
High end Scientific and Aerospace Instrumentation
### Features and Benefits
1-ppm Resolution
1-ppm INL
7.5nV/√Hz Noise Spectral Density
0.19 LSB long term linearity stability
<0.05 ppm/°C temperature drift
1μs Settling Time
1.4 nV-sec glitch impulse
Operating temperature range:
-40°C to 125°C
20-Lead TSSOP package
Wide Power Supply Range up to ±16.5 V
35 MHz Schmitt Triggered Digital Interface
1.8 V compatible digital interface
**AD5791-EP supports defense and aerospace applications (AQEC standard)**
