CDMA/AMPS dual Band IF Receiver for Digital Phones
Preliminary Information
SATURN
SATURN
CDMA/AMPS dual Band IF Receiver for Digital Phones Preliminary Information
DS472...
Description
Preliminary Information
SATURN
SATURN
CDMA/AMPS dual Band IF Receiver for Digital Phones Preliminary Information
DS4721 Issue 4.2 April 1999
Features
q
Selectable IF input buffers with characteristic impedance suitable for interface to IF CDMA and FM SAW filter outputs AGC amplifiers with 90dB of variable gain, fully compensated for temperature variation IQ demodulator with accurately defined output DC level and low DC offsets LO operating at twice frequency with high accuracy quadrature generation Sophisticated power management control operation Overload indicator
Odering Information SATURN/KG/QP1S SATURN/KG/QP1T
q
q
Description
The SATURN circuit is designed for use in dual band dual mode mobile phones (CDMA/AMPS). The circuit is designed to be compataible with digital baseband and mixed signal circuit chips from Mitel (Planet Chip-set) and Qualcomm (MSM2 and BBA). A wideband AGC amplifier allows the input of CDMA or AMPS signal paths with a range power management control options.
q
q q
IF VCC
IF VEE
IF OUT
FM IFIN
I OUT
CDMA IFIN
Q OU T AGC Gain Control Temperature Comp. DLL
BAND 1900
Overload Indicator STARTUP ENABLE MODE CDM
PRESCALER
Mode Control
VHF VCC
VHF VEE
Figure 1 Block diagram
OVERLOAD DET
VHF BUF
VHF RES
1
SATURN
Preliminary Information
IF VCC IF OUTB IF OUT IF VEE GND CDMA IFIN CDMA IFINB FM IFIN FM IFINB AGC AGCB MODE CDMA ENABLE GND
VHF VCC I OUTB I OUT VHF VEE OVERLOAD DET VHF RES VHF RESB BAND 1900 VHF BUF VHF BUFB GND Q OUT...
Similar Datasheet