IFR3500中文资料IFR3500™ Rx IF/BASEBAND PROCESSOR数据手册ONSEMI规格书

描述 Description

Overview
At QUALCOMM CDMA Technologies (QCT), we strive to constantly improve the indispensable communication tools we all use every day. QCT creates state-of-the-art chipsets, system software, development tools and products – such as the Launchpad™ suite of technologies and software – that support the most advanced digital wireless features and functionality available for wireless devices and base stations – while continually reducing complexity, cost and board-space requirements.

特性 Features

• Dual-mode operation includes CDMA and GPS
• Rx digital baseband interface compatible with MSM3100™, MSM3300™, MSM5105™, MSM5100™, and MSM5500™ devices
• IF LO synthesizer can be shared between IFR3500 and RFT3500 devices for easier frequency planning and reduced cost
• Rx power control through 90 dB dynamic range VGA
• IF mixer for down-converting IF to analog baseband for CDMA and GPS
• Lowpass filtering for CDMA and GPS I- and Q-component baseband signal demodulation
• 4-bit ADCs convert CDMA or GPS I and Q analog baseband components to digital baseband
• IF LO circuits include on-chip VCO with selectable frequency divide ratios (2, 3, 4, 6)
• I- and Q-channel DC offset control inputs drive baseband DC voltage offset to zero in CDMA and GPS signal paths
• Selective programming modes to extend handset power savings
• MSM-controlled operation via serial bus interface (SBI)
• Supply voltage from 2.7 V to 3.0 V
• 32-pin BCC++ package (5 mm x 5 mm x 0.8 mm)