SKY74691 Datasheet (Skyworks Solutions) - Receiver for CDMA Mobile Handset Applications

SKY74691, Receiver for CDMA Mobile Handset Applications

DataShee CELL_LNA_OUT RF_BIAS_RES CELL_MIX_IN MIX_VCC GND CELL_LNA_IN GND N/C GND N/C VCC_RF_BIAS LNA_BIAS_RES LNA_0 LNA_1 VCO_ON VCO_DEC_CAP VCO_TUNE 1 2 3 4 5 6 7 8 9 10 11 12 13 48 47 46 45 44 43 42 41 40 39 38 MODE_0 LO_IN GND N/C GND N/C N/C 37 36 35 34 33 32 31 30 29 28 27 26

www.DataSheet4U.com PRODUCT SUMMARY SKY74691: Receiver for CDMA Mobile Handset Applications Applications Single mode CDMA handsets After RF LNA signal amplification and filtering from the antenna, the received signal is downconverted from RF to the Intermediate Frequency (IF).

The LO_IN signal (pin 39) provides a Local Oscillator (LO) port for the RF mixer.

The UHF Voltage Controlled Oscillator (VCO) is buffered and amplified internally, and provides the LO to drive the LO port of a

SKY74691 Features

* Three-step gain control, cellular LNA

* External resistor to adjust LNA bias current

* Buffered LO signal for transmit upconverter

* VGA with 90 dB dynamic range

* Integrated IF VCO and tank circuit

* VCO_ON auto-tuning control

* Battery cell