A/D Converter based on 28nm Process meets Spectral Efficiency Demands of 4G/5G Base Stations

Analog Devices have introduced a new series of high speed analog-to-digital converters (A/D converters) based on a 28 nm process for GHz bandwidth applications.

The AD9208 A/D converter meets the increased spectral efficiency demands of 4G/5G multi-band wireless communications base stations.

Based on 28nm CMOS technology, the AD9208 delivers industry leading bandwidth and dynamic range to cover the largest number of signal bands. It also features low-noise spectral density for diversity radio and I/Q demodulation systems, while consuming half of the power, when compared to alternative solutions.

The dual 14-bit AD9208 converter is optimized for wide input bandwidth, high sampling rate, excellent linearity, low power in a small package with an industry standard interface, allowing designers flexibility in selecting processor platforms and signal processing partitioning using ADI’s wideband RF data acquisition technology. With sampling speeds up to 3.0 GSPS, the new converter facilitates direct RF signal processing architectures and provides high oversampling. This simplifies front-end filtering, thereby reducing receiver design complexity and overall system cost.

The AD9208 enables direct RF sampling of wideband signals beyond 6 GHz, allowing more flexibility and the ability to eliminate mixer stages and simplifies system design with an internal clock divider and optional RF clock output.

AD9208 Product Highlights

  • Wide full power bandwidth supports IF sampling of signals up to 9GHz (-3dB point).
  • Up to 96-tap Programmable Finite Impulse Response (FIR) filter block that can be configured for channel equalization and/or quadrature error correction.
  • Four Integrated wide-band decimation filter and 48-bit NCO blocks supporting multi-band receivers.
  • Phase coherent fast NCO switching enabled through GPIO pins.
  • JESD204B (Subclass 1) coded serial digital outputs: Support for lane rates up to 16 Gbps/lane.
  • On-chip temperature diode for improved system thermal management.

The AD9208, will be showcased at the upcoming International Microwave Symposium (IMS2017) to be held in Honolulu, Hawaii from June 4 – June 9, 2017.

ADI has also released a digital-to-analog converter (D/A converter) based on the 28nm process. Click here to learn more about this product.