Texas Instruments DAC3482
The DAC3482 is a very low power, high dynamic range, dual-channel, 16-bit digital-to-analog converter (DAC) with a sample rate as high as 1.25 GSPS. The device includes features that simplify the design of complex transmit architectures: 2x to 16x digital interpolation filters with over 90 dB of stop-band attenuation simplify the data interface and reconstruction filters. The digital Quadrature Modulator Correction (QMC) enables complete IQ compensation for gain, offset, phase, and group delay between channels in direct upconversion applications.FEATURES
●1 Very Low Power: 900 mW at 1.25 GSPS, Full Operating Conditions● Multi-DAC Synchronization
● Selectable 2x, 4x, 8x, 16x Interpolation Filter – Stop-Band Attenuation > 90 dBc
● Flexible On-Chip Complex Mixing – Fine Mixer with 32-Bit NCO – Power Saving Coarse Mixer: ± n×Fs/8
● High Performance, Low Jitter Clock Multiplying PLL
● Digital I and Q Correction – Gain, Phase, Offset, and Group Delay Correction
● Digital Inverse Sinc Filter
● Flexible LVDS Input Data Bus – Word- or Byte-Wide Interface – 8 Sample Input FIFO – Data Pattern Checker – Parity Check
● Temperature Sensor
● Differential Scalable Output: 10 mA to 30 mA
● Multiple Package Options: 88-Pin 9x9mm WQFNMR and 196-ball 12mmx12mm NFBGA (GREEN / Pb-Free) 2
APPLICATIONS
● Cellular Base Stations● Diversity Transmit
● Wideband Communications 3
DESCRIPTION
A complex mixer allows flexible carrier placement. A high-performance low jitter clock multiplier simplifies clocking of the device without significant impact on the dynamic range.