Overview
The AD9783BCPZ, produced by Analog Devices Inc., is a high-performance, dual digital-to-analog converter (DAC) with 12-, 14-, or 16-bit resolutions. This component is part of the AD9780/AD9781/AD9783 family, which offers pin-compatible devices suitable for various high-speed applications. The AD9783 is designed for direct conversion transmit applications and features a dynamic output architecture that allows for the synthesis of analog outputs even above the Nyquist frequency. It operates at sample rates of up to 500 MSPS and interfaces seamlessly with analog quadrature modulators like the ADL5370.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 12, 14, 16 | - | - | Bits |
| Sample Rate | - | - | 500 | MSPS |
| Differential Peak-to-Peak Voltage (CLKP − CLKN) | 400 | 800 | 1600 | mV |
| Common-Mode Voltage | 300 | 400 | 500 | mV |
| Maximum Clock Rate | - | - | 500 | MSPS |
| Supply Voltages | - | - | 1.8 V, 3.3 V | V |
| Power Dissipation | - | - | 315 | mW |
| Package Type | - | - | 72-Lead LFCSP | - |
Key Features
- High dynamic range, dual digital-to-analog converters with 12-, 14-, or 16-bit resolutions.
- Sample rates of 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 with source/sink capability 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 the Nyquist frequency.
- Small footprint, RoHS compliant.
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.
- Interface with analog quadrature modulators such as the ADL5370.
Q & A
- What are the resolution options for the AD9783 DAC?
The AD9783 offers 12-, 14-, or 16-bit resolutions.
- What is the maximum sample rate of the AD9783?
The maximum sample rate is up to 500 MSPS.
- What type of interface does the AD9783 use?
The AD9783 uses an LVDS interface with dual-port or optional interleaved single-port operation.
- What is the range of the programmable analog current outputs?
The differential analog current outputs are programmable from 8.6 mA to 31.7 mA full scale.
- Does the AD9783 have internal reference voltage source?
Yes, it includes an internal 1.2 V precision reference voltage source.
- How is the AD9783 programmed?
The AD9783 is fully programmable through a serial peripheral interface (SPI) port and also offers pin-programmable features.
- What is the power dissipation of the AD9783?
The power dissipation is approximately 315 mW.
- What package type does the AD9783 come in?
The AD9783 comes in a 72-Lead LFCSP package.
- Is the AD9783 RoHS compliant?
Yes, the AD9783 is RoHS compliant.
- What are some common applications of the AD9783?
Common applications include wireless infrastructure, wideband communications, and direct conversion transmit applications.
