- Dual, 16-Bit, 800 MSPS DACs
- 8-Bit Input LVDS Data Bus
- Byte-Wide Interleaved Data Load
- 8 Sample Input FIFO
- Optional Data Pattern Checker
- Multi-DAC Synchronization
- Selectable 2x-4x Interpolation Filters
- Stop-Band Attenuation > 85 dB
- Fs/2 and ± Fs/4 Coarse Mixer
- Digital Quadrature Modulator Correction
- Gain, Phase and Offset Correction
- Temperature Sensor
- 3- or 4-Wire Serial Control Interface
- On-Chip 1.2-V Reference
- Differential Scalable Output: 2 to 20 mA
- Single-Carrier TM1 WCDMA ACLR: 82 dBc at
fOUT = 122.88 MHz
- Low Power: 1.3 W at 800 MSPS
- Space Saving Package: 48-pin 7×7mm QFN
- Cellular Base Stations
- Diversity Transmit
- Wideband Communications
- Digital Synthesis
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The DAC3283 is a dual-channel 16-bit 800 MSPS digital-to-analog converter (DAC) with an 8-bit LVDS input data bus with on-chip termination, optional 2x-4x interpolation filters, digital IQ compensation and internal voltage reference. The DAC3283 offers superior linearity, noise and crosstalk performance.
Input data can be interpolated by 2x or 4x through on-chip interpolating FIR filters with over 85 dB of stop-band attenuation. Multiple DAC3283 devices can be fully synchronized.
The DAC3283 allows either a complex or real output. An optional coarse mixer in complex mode provides frequency upconversion and the dual DAC output produces a complex Hilbert Transform pair. The digital IQ compensation feature allows optimization of phase, gain and offset to maximize sideband rejection and minimize LO feed-through of an external quadrature modulator performing the final single sideband RF up-conversion.
The DAC3283 is characterized for operation over the entire industrial temperature range of –40°C to 85°C and is available in a 48-pin 7×7mm QFN package.