DAC5687

DAC5687 www.ti.com SLWS164E – FEBRUARY 2005 – REVISED SEPTEMBER 2006 16-BIT, 500 MSPS 2×–8× INTERPOLATING DUAL-CHANNEL DIGITAL-TO-ANALOG CONVERTER (DAC) FEATURES 1 2345 500 MSPS Selectable 2×–8× Interpolation On-Chip PLL/VCO Clock Multiplier Full IQ Compensation Including Offset, Gain, and Phase Flexible Input Options: – FIFO With Latch on External or Internal Clock – Even/Odd Multiplexed Input – Single Port Demultiplexed Input Complex Mixer With 32-Bit NCO Fixed Frequency Mixer With fS/4 and fS/2 1.8-V or 3.3-V I/O Voltage On-Chip 1.2-V Reference Differential Scalable Output: 2 mA to 20 mA Pin Compatible to DAC5686 High Performance – 81-dBc ACLR WCDMA TM1 at 30.72 MHz – 72-dBc ACLR WCDMA TM1 at 153.6 MHz Package: 100-Pin HTQFP APPLICATIONS Cellular Base Transceiver Station Transmit Channel – CDMA: W-CDMA, CDMA2000, TD-SCDMA – TDMA: GSM, IS-136, EDGE/UWC-136 – OFDM: 802.16 Cable Modem Termination System DESCRIPTION The DAC5687 is a dual-channel 16-bit high-speed digital-to-analog converter (DAC) with integrated 2×, 4×, and 8× interpolation filters, a complex numerically controlled oscillator (NCO), onboard clock multiplier, IQ compensation, and on-chip voltage reference. The DAC5687 is pin-compatible to the DAC5686, requiring only changes in register settings for most applications, and offers additional features and superior linearity, noise, crosstalk, and PLL phase noise performance. The DAC5687 has six signal processing blocks: two interp...