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Wideband Receiver

Wed, 01/21/2004 - 10:48am

Analog Devices introduces a wideband receiver subsystem for cellular base stations. The AD6654 combines a 14-bit analog-to-digital (ADC) converter with a four- or six-channel digital downconverter (DDC). The core of the AD6654 ADC operates at more than 92 MSPS, while the digital functions performed by a DDC. The ADC signal-to-noise ratio is 74.5 dB (to Nyquist), and its multi-tone spurious-free dynamic range is 100 dB (to 2x Nyquist. The DDC can process four or six CDMA2000, UMTS, or TD/SCDMA channels simultaneously. Each channel is configurable, operates independently and includes cascaded signal-processing elements: a frequency translator, programmable decimating filter, and automatic gain control circuitry.

Analog Devices, Inc.

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