MGCR01 Datasheet, PDF (1/12 Pages) Zarlink Semiconductor Inc – Dual Mode IF Receiver for TDMA/AMPS and CDMA/AMPS

MGCR01
Dual Mode IF Receiver for TDMA/AMPS and CDMA/AMPS
Datasheet
Features
• 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
Description
DS4721
ISSUE 4.4
Ordering Information
MGCR01/KG/QP1S
MGCR01/KG/QP1T
November 2001
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.
The MGCR01 is designed for use in dual mode
mobile phones (TDMA/AMPS and CDMA/AMPS).
The circuit provides IF amplification with gain control
FM IFIN
CDMA IFIN
AGC
STARTUP
ENABLE
MODE CDM
Gain
Control
Temperature
Comp.
Mode
Control
I OUT
Overload
Indicator
Q OU T
DLL
PRESCALER
BAND 1900
DIV2 EN
VHF VCC
VHF VEE
Figure 1 - Block Diagram
1