Analog Devices introduced an 11-bit D/A converter that enables cable television and broadband operators to synthesize the entire cable spectrum up to 1 GHz into a single RF port, while consuming a maximum of 1.1 W of power. The AD9737A 2.5-GSPS D/A converter’s wide bandwidth and dynamic range enable cable infrastructure designers to increase quadrature amplitude modulation channel density by 20 times over present cable modem implementations, enabling improved next-generation services such as interactive television, high-definition broadcasts and new specialty channels.
Output current is programmable from 8.7 mA to 31.7 mA adding flexibility in interface options. Complementary components include ADI’s ADCLK914 clock/data buffer, which drives the clock input of the AD9737A D/A converter with a 2 V differential swing that achieves jitter performance of 110 fs.
