AD5781-EP Datasheet

• Single 18-bit DAC, ± 0.5 LSB INL
• 7.5nV/√Hz Noise Spectral Density
• 0.05 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 ±16.5V
• 35 MHz Schmitt triggered Digital Interface
• 1.8 V compatible digital interface

AD5781-EP supports defense and aerospace applications (AQEC standard)

• Download the AD5781-EP Data Sheet (pdf)
• Military temperature range (−55°C to +125°C)
• Controlled manufacturing baseline
• One assembly/test site
• One fabrication site
• Enhanced product change notification
• Qualification data available on request
• V62/12661 DSCC Drawing Number

• Medical Instrumentation
• Test and Measurement
• Industrial Control
• Scientific and Aerospace Instrumentation
• Data Acquisition Systems
• Digital Gain and Offset Adjustment
• Power Supply Control

The AD5781-EP is a single 18-bit, unbuffered voltage output digital-to-analog converter (DAC) that operates from a bipolar supply of up to 33 V. The AD5781-EP accepts a positive reference input range of 5 V to VDD − 2.5 V and a negative reference input range of VSS + 2.5 V to 0 V. The AD5781-EP offers a relative accuracy specification of ±0.5 LSB maximum, and operation is guaranteed monotonic with a ±0.5 LSB differential nonlinearity (DNL) maximum specification.

The part uses a versatile 3-wire serial interface that operates at clock rates of up to 35 MHz and is compatible with standard serial peripheral interface (SPI), QSPI™, MICROWIRE™, and DSP interface standards. The part incorporates a power-on reset circuit that ensures that 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 devicetakes place. 

The part provides an output clamp feature that places the output in a defined load state.

The AD5781-EP is available in a compact, 20-lead TSSOP package and operates at the extended automotive temperature range of −55°C to +125°C. Additional application and technical information can be found in the AD5781 data sheet.

PRODUCT HIGHLIGHTS
1. True 18-Bit Accuracy.
2. Wide Power Supply Range Up to ±16.5 V.
3. −55°C to +125°C Operating Temperature Range.
4. Low 7.5 nV/√Hz Noise.
5. Low 0.05 ppm/°C Temperature Drift.