MGCR01
Dual Mode IF Receiver for TDMA/AMPS and CDMA/AMPS
Datasheet
Features
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Dual IF Inputs 50 to 250 MHz
90dB AGC Gain Control
IQ demodulator
On chip oscillator provides high accuracy
quadrature LO generation
Optional IF Output
3 Volt Power Supply
28 lead QSOP Package
DS4721
ISSUE 4.4
November 2001
Ordering Information
MGCR01/KG/QP1S
MGCR01/KG/QP1T
Description
The MGCR01 is designed for use in dual mode
mobile phones (TDMA/AMPS and CDMA/AMPS).
The circuit provides IF amplification with gain control
and differential I and Q baseband outputs. The
MGCR01 interfaces directly with MGCM01 for
TDMA/AMPS (using 60kHz low IF) and MGCM03 or
MGCM04 for CDMA and AMPS applications. The on
chip oscillator and prescaler are also compatible with
the PLL synthesisers on these devices.
IF OUT
IF VCC
IF VEE
FM IFIN
I OUT
CDMA IFIN
Q OU T
AGC
Gain
Control
Temperature
Comp.
DLL
BAND 1900
Overload
Indicator
STARTUP
ENABLE
MODE CDM
PRESCALER
DIV2 EN
Mode
Control
VHF VCC
VHF VEE
Figure 1 - Block Diagram
OVERLOAD DET
VHF RES
VHF BUF
1
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