AD5781 True 18-Bit, Voltage Output DAC ±0.5 LSB INL, ±0.5 LSB DNL
Product Highlights
True 18-Bit Accuracy.
Wide Power Supply Range of Up to ±16.5 V.
−40°C to +125°C Operating Temperature Range.
Low 7.5 nV/√Hz Noise.
Low 0.05 ppm/°C Temperature Drift.
Applications
The AD5781 is a single 18-bit, unbuffered voltage-output DAC that operates from a bipolar supply of up to 33 V. The AD5781 accepts a positive reference input in the range 5V to VDD – 2.5 V and a negative reference input in the range VSS + 2.5 V to 0 V. The AD5781 offers a relative accuracy specification of ±0.5 LSB max, and operation is guaranteed monotonic with a ±0.5 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.
Features and Benefits- 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
- 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
- V62/12661-01XB DSCC Drawing Number
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Data Sheets
User Guides
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|
| AD5781ARUZ Production | 20 ld TSSOP | OTH 75 | -40 to 125C | 20.03 | 16.42 | Y |
| AD5781ARUZ-REEL7 Production | 20 ld TSSOP | REEL 1000 | -40 to 85C | 0 | 16.42 | Y |
| AD5781BRUZ Production | 20 ld TSSOP | OTH 75 | -40 to 125C | 30.45 | 24.96 | Y |
| AD5781BRUZ-REEL7 Production | 20 ld TSSOP | REEL 1000 | -40 to 125C | 0 | 24.96 | Y |
| AD5781SRU-EP Production | 20 ld TSSOP | OTH 75 | -55 to 125C | 91.5 | 75 | N |
Evaluation Boards
| Part Number | Description | Price | RoHS |
|---|
| EVAL-AD5781SDZ | Evaluation Board | 159 | Y |
| EVAL-SDP-CB1Z | Evaluation Controller Board | 99 | Y |
Reference Materials
