●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.
●FEATURES
●•
●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
