Linear Technology has released the LTM9004 and LTM9005, two RF-to-digital uModule® devices for use in the receive channel in cellular base stations, including 3G and 4G base station receivers (WCDMA, TD-SCDMA, LTE, etc.) and smart antenna WiMAX base stations. The uModule receivers integrate the RF mixer/demodulator, amplifiers, passive filtering and 14-bit, 125Msps ADCs in one 22mm × 15mm package. The LTM9004 implements a direct conversion architecture with an I/Q demodulator, low-pass filter and a dual ADC. The LTM9005 implements an IF-sampling architecture with a downconverting mixer, SAW filter and a single ADC.
Fully Integrated RF-to-Digital Receivers for Base Station Applications
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