DESCRIPTION
●The DAC34SH84 is a very low-power, high-dynamic range, quad-channel, 16-bit digital-to-analog converter (DAC) with a sample rate as high as 1.5 GSPS.
●The device includes features that simplify the design of complex transmit architectures: 2× to 16× digital interpolation filters with over 90 dB of stop-band attenuation simplify the data interface and reconstruction filters. Independent complex mixers allow flexible carrier placement. A high-performance
●low-jitter clock multiplier simplifies clocking of the device without significant impact on the dynamic
●range. The digital quadrature modulator correction (QMC) enables complete IQ compensation for gain,
●offset and phase between channels in direct upconversion applications.
●FEATURES
●• Low Power: 1.8 W at 1.5 GSPS, Full Operating Condition
●• Multi-DAC Synchronization
●• Selectable 2×, 4×, 8×, 16× Interpolation Filter
●– Stop-Band Attenuation > 90 dBc
●• Flexible On-Chip Complex Mixing
●– Two Independent Fine Mixers With 32-Bit NCOs
●– Power-Saving Coarse Mixers: ±n × fS / 8
●• High-Performance, Low-Jitter Clock-Multiplying PLL
●• Digital I and Q Correction
●– Gain, Phase and Offset
●• Digital Inverse Sinc Filters
●• 32-Bit DDR Flexible LVDS Input Data Bus
●– 8-Sample Input FIFO
●– Supports Data Rates up to 750 MSPS
●– Data Pattern Checker
●– Parity Check
●• Temperature Sensor
●• Differential Scalable Output: 10 mA to 30 mA
●• 196-Ball, 12-mm × 12-mm BGA
●APPLICATIONS
●• Cellular Base Stations
●• Diversity Transmit
●• Wideband Communications
