- 11-bit AD9737A 2.5GSPS D/A converter, increasing the number of supported QAM channels per D/A converter by up to 20 times

February 14, 2012 – Analog Devices ( www.analog.com ), a market leader in data converters, today introduced a new 11-bit D/A converter that enables cable TV and broadband operators to synthesize the entire cable spectrum up to 1 GHz onto a single RF port while consuming up to 1.1 W of power. The wide bandwidth and dynamic range of the AD9737A 2.5 GSPS D/A converter allow cable infrastructure designers to increase Quadrature Amplitude Modulation (QAM) channel density 20-fold in current cable modem implementations, thereby enhancing next-generation services such as interactive TV, HD broadcasting, and new specialized channels.

AD9737A D/A Converter Specifications and Benefits:

• Low noise and intermodulation distortion enable high-quality synthesis of broadband signals up to 1 GHz, reducing the number of transmitting DACs required for typical cable facilities.
• Total power consumption of 1.1W (max) while operating on 1.8V and 3.3V power supplies
• Supports conversion rates of up to 2.5 GSPS via a dual-port interface with a DDR (Double-Data-Rate) LVDS data receiver
• Improved dynamic performance with unique switching techniques
• Enhanced flexibility of interface options with programmable output current in the 8.7mA to 31.7mA range
• Not subject to U.S. data converter export restrictions