CC2420 Chipcon AS, CC2420 Datasheet - Page 16

• Manufacturer Part Number: CC2420
• Description: 2.4 GHz RF Transceiver for IEEE 802.15.4 and ZigBee
• Manufacturer: Chipcon AS

cost of reduced power level and receiver
sensitivity.
The frequency synthesizer includes a
completely on-chip LC VCO and a 90
degrees phase splitter for generating the I
and Q LO signals to the down-conversion
mixers in receive mode and up-conversion
mixers in transmit mode. The VCO
operates in the frequency range 4800 –
4966 MHz, and the frequency is divided by
two when split in I and Q.
A
XOSC16_Q1
provides the reference frequency for the
synthesizer. A digital lock signal is
available from the PLL.
Chipcon AS SmartRF® CC2420 Preliminary Datasheet (rev 1.0), 2003-11-17
crystal
must
and
be
XOSC16_Q2
connected
and
to
SmartRF
The digital baseband includes support for
frame handling, address recognition, data
buffering and MAC security.
The 4-wire SPI serial interface is used for
configuration and data buffering.
An on-chip voltage regulator delivers the
regulated 1.8 V supply voltage. The
voltage regulator may be enabled /
disabled through a separate pin.
A battery monitor may optionally be used
to monitor the unregulated power supply
voltage.
configurable through the SPI interface.
The
®
battery
CC2420
monitor
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is