Overview
The AD9781BCPZRL, produced by Analog Devices Inc., is a high-performance, dual 14-bit digital-to-analog converter (DAC) designed for demanding applications requiring high dynamic range and precision. This device is part of the AD9780/AD9781/AD9783 family, which offers pin-compatible DACs with resolutions of 12, 14, and 16 bits, respectively. The AD9781BCPZRL operates at sample rates of up to 500 MSPS, making it suitable for various high-speed applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 14 | 14 | 14 | Bits |
| Differential Nonlinearity (DNL) | ±0.5 | ±2 | LSB | |
| Integral Nonlinearity (INL) | ±1 | ±4 | LSB | |
| Full-Scale Output Current | 8.66 | 20.2 | 31.66 | mA |
| Output Compliance Range | -1.0 | +1.0 | V | |
| Output Resistance | 10 | 10 | MΩ | |
| Sample Rate | 500 | MSPS | ||
| Supply Voltages | 1.8 V, 3.3 V | V | ||
| Power Dissipation | 315 | mW |
Key Features
- Dual 14-bit digital-to-analog converters with sample rates up to 500 MSPS.
- LVDS interface with dual-port or optional interleaved single-port operation.
- Differential analog current outputs programmable from 8.6 mA to 31.7 mA full scale.
- Auxiliary 10-bit current DACs for external offset nulling.
- Internal 1.2 V precision reference voltage source.
- Full programmability through a serial peripheral interface (SPI) port.
- Pin-programmable features for applications without a controller.
- Proprietary dynamic output architecture for synthesizing analog outputs above Nyquist frequency.
- Gain and offset compensation for direct conversion transmit applications.
- Seamless interface with analog quadrature modulators like the ADL5370.
Applications
- Wireless infrastructure: W-CDMA, CDMA2000, TD-SCDMA, WiMAX.
- Wideband communications: LMDS/MMDS, point-to-point RF signal generators, arbitrary waveform generators.
- Direct conversion transmit applications.
Q & A
- What is the resolution of the AD9781BCPZRL DAC?
The AD9781BCPZRL has a resolution of 14 bits.
- What is the maximum sample rate of the AD9781BCPZRL?
The maximum sample rate is up to 500 MSPS.
- What types of interfaces does the AD9781BCPZRL support?
The device supports LVDS interfaces with dual-port or optional interleaved single-port operation.
- What is the range of the full-scale output current?
The full-scale output current is programmable from 8.6 mA to 31.7 mA.
- Does the AD9781BCPZRL have internal reference voltage source?
Yes, it has an internal 1.2 V precision reference voltage source.
- How is the AD9781BCPZRL programmed?
The device is fully programmable through a serial peripheral interface (SPI) port and also offers pin-programmable features.
- What are some common applications of the AD9781BCPZRL?
Common applications include wireless infrastructure, wideband communications, and direct conversion transmit applications.
- Is the AD9781BCPZRL RoHS compliant?
Yes, the AD9781BCPZRL is RoHS compliant.
- What is the package type of the AD9781BCPZRL?
The device is packaged in a 72-lead LFCSP (10mm x 10mm with EP).
- How much power does the AD9781BCPZRL dissipate?
The power dissipation is up to 315 mW.
