AD9789BBCZ

AD9789 is a flexible QAM encoder/interpolator/upconverter combined with a high performance, 2400MSPS, 14bit RF D/A converter (DAC). The flexible digital interface can accept up to four channels of complex data. The QAM encoder supports constellation sizes of 16, 32, 64, 128, and 256 with SRRC filter coefficients for all standards. The on-chip rate converter supports a wide range of baud rates with a fixed DAC clock. The digital upconverter can place the channels from 0 to 0.5 × fDAC. This permits four contiguous channels to be synthesized and placed anywhere from dc to fDAC. The AD9789 includes a serial peripheral interface (SPI) for device configuration and status register readback. The flexible digital interface can be configured for data bus widths of 4, 8, 16, and 32bits. It can accept real or complex data. Typical applications include broadband communications systems, CMTS/DVB, cellular infrastructure and Point-to-point wireless.

• DOCSIS 3.0 performance: 4 QAM carriers ACLR over full band (47MHz to 1GHz)
• Unequalised MER = 42dB, -75dBc/-72dBc/-67dBC at fOUT = 200/800 (noise)/800MHz (harmonics)
• Flexible data interface: 4, 8, 16, or 32 bits wide with parity
• Power of 1.6W (IFS = 20mA, fDAC = 2.4GHz, LVDS interface)
• Direct to RF synthesis support with fS mix mode
• Built-in self-test (BIST) support (Input connectivity check and Internal random number generator)
• 6.5% FSR offset error and 3.5% FSR gain error (with internal reference)
• 135ppm/°C gain and 25ppm/°C reference voltage (temperature drift)
• 164 lead CSPBGA package
• Operating temperature range from -40°C to 85°C

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party