Analog Devices last week debuted 28-nm CMOS A/D and D/A converters. The AD9208 A/D converter and AD9172 D/A converter meet the increased spectral efficiency demands of 4G/5G multiband wireless communications base stations. The AD9208 also meets the reduced run-time targets of multi-standard production instrumentation and provides greater detection range and sensitivity for defense electronics. The AD9172 meets the needs of 2-GHz E-band microwave point-to-point backhaul platforms and benefits production instrumentation targeting multistandard direct-to-RF signal synthesis. In addition, the AD9172 provides a solution for defense electronics requiring greater detection range.
The AD9208 delivers industry-leading bandwidth and dynamic range to cover the largest number of signal bands, the company said. 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 AD9208, along with the complete new portfolio, will be presented at the upcoming International Microwave Symposium.
The dual 14-bit AD9208 is optimized for wide input bandwidth, high sampling rate, excellent linearity, and 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 GS/s, the new A/D 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.
The dual 16-bit, 12-GS/s AD9172 provides direct-to-RF synthesis up to 6 GHz, eliminating the IF-to-RF up-conversion stage and LO generation. This simplifies the overall RF signal chain and lowering overall system cost. The AD9172 maintains superior linearity and noise performance across these RF frequencies providing system architects with the highest level of configurability, the company said. Independent numerically controlled oscillator (NCO), digital gain control, and various interpolation filter combinations per input channel provide designers with a rich suite of signal-processing options to allow flexible signal chain partitioning between the analog and digital domains further enabling system designers to develop software defined platforms.
