News | September 29, 2005

Analog Devices' Data Converters Deliver Specs For Wireless Infrastructure Applications

Norwood, MA -- Analog Devices Inc. is introducing a family of 14-bit and 12-bit ADCs (analog-to-digital converters) that offer low-power operation for wireless infrastructure applications. The flagship device, the AD9246 is the first 14-bit, 125-MSPS (million samples per second) ADC to achieve SFDR (spurious-free dynamic range) of 85 dBc at a 70 MHz input. A critical specification for wireless communications, SFDR expands the dynamic range of base station receivers by capturing weak signals in the frequency band of interest, despite the presence of strong, interfering signals. The AD9246 provides SNR (signal-to-noise ratio) of 72.25 dBfs at a 70 MHz input and 395 mW of power, enabling high-quality conversion of third-generation wireless standards at the lower voltage levels required to reduce power consumption. This combination of speed, resolution, IF (intermediate frequency) performance, and power makes the AD9246 appropriate for smaller wireless infrastructure systems, such as micro and pico cell base stations.

"Many evolving applications that use data converters are not driven by the ultimate in resolution and speed," said Kevin Kattmann, product line director, High Speed Signal Processing group, Analog Devices. "Innovating for low power and ease of use, without compromising historical performance metrics is critical. The fact that this new family of ADCs is pin-compatible, allows designers to easily trade off speed and resolution for system cost."

The 14-bit, 125-MSPS AD9246 is the flagship product in ADI's new 1.8-V core family of 12- and 14-bit, 105- and 125-MSPS ADCs. In addition to the AD9246, this family includes the 14-bit, 105-MSPS AD9246; the 12-bit, 125-MSPS AD9233; and the 12-bit, 105-MSPS AD9233.

SOURCE: Analog Devices