CXA3685ER Datasheet | Sony Semiconductor Solutions

.. Direct Conversion IC for Digital Satellite Broadcast Tuner 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: 430m W (typ.) ‹ No need for an external inductor and varactor diode ‹ 3.3V single power supply ‹ Reception frequency: 950MHz to 2150MHz ‹ Wide input range (typ. - 65d Bm to - 15d Bm) ‹ 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: 180m W (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 products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits. -1- E06X01-CR .....