RDA6220E
The information contained herein is the exclusive property of RDA and shall not be distributed, reproduced, or disclosed in
whole or in part without prior written permission of RDA. 1
RDA6220E TRANSCEIVER
FOR GSM/EDGE WIRELESS COMMUNICATION (Version 0.1)
Single chips solution: RDA6220E
Multi-band GSM cellular systems:
z GSM 850
z E-GSM 900
z DCS 1800
z PCS 1900
Integrated LDO
Integrated GSM/EDGE transceiver
including the following:
z Digital low-IF receiver
z Direct modulation transmitter
z Frequency synthesizer
ˉIntegrated VCO, loop filters, etc.
Two reference oscillator options
z 26MHz VC-TCXO
z 26MHz Crystal
Support digital AFC
Universal analog baseband
interface and DigRF V1.12
digital interface
GPRS/EDGE multi slot up to
class 33/38
RF FEM control
3.3 to 4.2 V operation
CMOS process technology
Lead-free
Features
Applications
Multiband GSM/GPRS/EDGE digital cellular handsets
Multiband GSM/GPRS/EDGE wireless data modems
Description
The RDA6220E transceiver is a complete RF front end for GSM/GPRS/EDGE wireless communication. It has an
integrated power manager unit, can be directed connected to battery power supply. The receive section interfaces between
the RF band-select SAW filter and the baseband IC. The RDA6220E receiver employs a digital low-IF architecture, and
support both universal analog baseband interfaces and DigRF 1.12 digital interface. In GSM GMSK modulation mode, the
transmit section of RDA6220E provides a direct modulation PLL transmitter path from the baseband subsystem to the
power amplifier (PA). And in 8PSK mode, the AM signal directly modulation the PA driver block to rebuild the RF signal. A
fast settling fractional-N synthesizer is fully integrated, including RF VCO, loop filters, and varactors, etc. The RDA6220E
transceiver includes a digitally-controlled crystal (DCXO) and completely integrates the reference oscillator and frequency
tuning varactors. The RDA6220E integrated four GPIO and build precise timing control for RF FEM.
