May 14, 2014 - Analog Devices announced AD9680, a dual-channel, 1.25-V, 14-bit, 1-GSPS AD9680 A/D converter for direct RF sampling in communications, instrumentation and military/aerospace applications. Its noise density of -154 dBFs/Hz is low, allowin for better signal extraction in congested RF environments over a wide bandwidth. The AD9680 is interoperable with FPGAs from major manufacturers and supported with known good configurations. The AD9680 combined with the recently announced 12-bit, 2-GSPS AD9625 A/D converter, demonstrate ADI’s innovation in providing leading edge offerings driving the trend toward direct RF sampling.
The AD9680 A/D converter allows more degrees of freedom for system designers trading off signal bandwidth, noise and linearity because it can digitize a DC to 2-GHz input signal with an accompanying dynamic range performance that was previously unavailable on the open market. Implementing a direct RF sampling architecture eliminates analog down-conversion stages and their associated noise and cost, and allows more front-end configuration and tuning to be accomplished entirely in the digital domain. With the AD9680 designers can increase signal sensitivity and bandwidth data rate, while enabling the use of an advanced reconfigurable data acquisition or radio platform.
The A/D converter is available with an evaluation board design environment and reference designs for rapid system prototyping and board-level design and layout. The AD9680 was designed for sampling wide bandwidth analog signals up to 2 GHz and features the industry’s best dynamic range and noise performance over its rated bandwidth range. When converting a 1-GHz input, the converter achieves spurious-free dynamic range (SFDR) performance of 80-dBc and 61.5-dBFS signal-to-noise ratio (SNR) while consuming 1.65 W of total power per channel.
Integrated functionality includes digital signal processing blocks and a configurable JESD204B interface, allowing designers to create advanced reconfigurable radio platforms that meet bandwidth and cost requirements across multiple systems. Higher speed grades are scheduled.
AD9680 Key Features
- Wide full power bandwidth supports RF sampling of signals to 2 GHz
- Buffered inputs with programmable input termination eases filter design and implementation
- Four integrated wide-band decimation filter and numerically controlled oscillators (NCO) blocks support multi-band, multi-standard receivers
- Reference design platform simplifies prototyping
Evaluation Board Environment to Speed Prototyping and Design
Each GSPS A/D converter is supported by an evaluation board with an FPGA Mezzanine Card (FMC) connector, software, tools, SPI controller and reference designs. ADI’s VisualAnalog software package combines a powerful set of simulation and data analysis tools with a user-friendly graphical interface allowing designers to customize their input signal and data analysis. The high-speed A/D converter SPI controller tool allows users to control advanced features with SPI capability. A data capture board supporting JESD204B lane rates at 12.5 Gbps is also available.
About Analog Devices
Innovation, performance, and excellence are the cultural pillars on which Analog Devices has built one of the longest standing, highest growth companies within the technology sector. Acknowledged industry-wide as the world leader in data conversion and signal conditioning technology, Analog Devices serves over 60,000 customers, representing virtually all types of electronic equipment. Celebrating over 40 years as a leading global manufacturer of high-performance integrated circuits used in analog and digital signal processing applications, Analog Devices is headquartered in Norwood, Massachusetts, with design and manufacturing facilities throughout the world. Analog Devices' is included in the S&P 500 Index.
