Direct Conversion IC
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Direct Conversion IC for Digital Satellite Broadcast Tuner
CXA3685ER
Description
The CXA3685ER is ...
Description
www.DataSheet4U.com
Direct Conversion IC for Digital Satellite Broadcast Tuner
CXA3685ER
Description
The CXA3685ER is an IC developed for direct orthogonal detection of L band (1 to 2GHz) IF signals in a digital satellite broadcast reception tuner. This direct conversion (Zero-IF) technology eliminates the need for the SAW filter that was formerly necessary. In addition, the CXA3685ER incorporates an RF gain control amplifier, oscillator circuit, wide-band phase shifter circuit and other RF circuits, a baseband LPF, baseband gain control amplifier, tuning PLL, and the inductor and varactor diode needed for a tuning VCO. This makes it possible to realize the front-end RF block without tuning the RF circuits. (Applications: BS/CS digital broadcast (ISDB-S) tuner)
Features
Low power consumption: 430mW (typ.) No need for an external inductor and varactor diode 3.3V single power supply Reception frequency: 950MHz to 2150MHz Wide input range (typ. –65dBm to –15dBm) Internal wide band 90° phase shifter Internal output for controlling an external attenuator Reference signal output for the demodulation circuit Enables to use external reference signals Small package: 48-pin VQFN Enables to reduce power consumption in power save mode when not used: 180mW (typ.)
Package
48-pin VQFN (Plastic)
Note) This IC has pins whose electrostatic discharge strength is weak as the high-frequency process is used. Take care of handling the IC. Sony reserves the right to change...
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