WE2408 View Datasheet(PDF) - Unspecified
Part Name
Description
MFG CO.
'WE2408' PDF : 36 Pages View PDF
WiNEDGE & WiRELESS
Winceiver WE2408
2.4GHz Single Chip FM Transceiver
TABLE OF CONTENT
SIMPIFIED 2.4GHZ APPLICATION CIRCUIT...................................................................................... 3
BLOCK DIAGRAM................................................................................................................................ 4
PIN CONFIGURATION ........................................................................................................................ 4
PIN DESCRIPTIONS............................................................................................................................ 5
FUNCTIONAL DESCRIPTION ............................................................................................................. 6
ZERO IF RECEIVER.............................................................................................................................. 6
TRANSMITTER...................................................................................................................................... 8
REFERENCE OSCILLATOR ................................................................................................................. 9
OPERATION LIMITS.......................................................................................................................... 10
ELECTRICAL SPECIFICATIONS ...................................................................................................... 10
RECEIVER BANDWIDTH ADJUSTMENT ......................................................................................... 15
BASEBAND FILTERS BANDWIDTH ................................................................................................... 15
DEMODULATOR BANDWIDTH........................................................................................................... 16
IF FILTER BANDWIDTH...................................................................................................................... 17
RSSI ................................................................................................................................................... 17
RSSI TOLERANCE .............................................................................................................................. 17
METHODS OF CORRECTING RSSI TOLERANCE ............................................................................ 17
RSSI SETTLING TIME ......................................................................................................................... 18
RX/TX RESPONSE TIME .................................................................................................................. 18
RX/TX PLL LOCK TIME ....................................................................................................................... 18
RECEIVER ATTACK TIME .................................................................................................................. 19
FM MODULATION ............................................................................................................................. 20
FM DEVIATION.................................................................................................................................... 20
FM MODULATOR ................................................................................................................................ 20
AUTOMATIC FREQUENCY CONTROL (AFC) ................................................................................. 22
AFC CORRECTION RANGE ............................................................................................................... 23
SWITCHING AFC ON AND OFF DURING OPERATION .................................................................... 24
CRYSTAL TUNING WITH AFC............................................................................................................ 24
WORKING CONDITIONS FOR AFC ................................................................................................... 24
AFC NOISE.......................................................................................................................................... 24
AFC RESPONSE TIME........................................................................................................................ 24
SERIAL PROGRAMMING INTERFACE ............................................................................................ 25
TIMING DIAGRAM ............................................................................................................................... 25
REFERENCE FREQUENCY REGISTER .......................................................................................... 26
RECEIVE FREQUENCY REGISTER ................................................................................................. 27
TRANSMIT FREQUENCY REGISTER .............................................................................................. 28
MODE REGISTER ............................................................................................................................. 29
RX GAIN CONTROL (BIT 3, 10-15, 18-19).......................................................................................... 29
AGC GAIN RESET DISABLE............................................................................................................... 31
CHARGE PUMP CURRENT AND POLARITY (BIT 6-9) ...................................................................... 31
ANALOG VS DIGITAL OUTPUT (BIT 17) ............................................................................................ 31
OTHER OPERATION MODES (BIT 18-22).......................................................................................... 32
PROGRAMMING EXAMPLES ............................................................................................................. 33
CIRCUIT DESIGN CONSIDERATIONS............................................................................................. 33
PACKAGE INFORMATION ................................................................................................................ 34
REVISION HISTORY.......................................................................................................................... 35
ORDERING INFORMATION .............................................................................................................. 36
© 2003 WiNEDGE & WiRELESS PTE LTD
Rev Date: 2003 May 23
Page 2
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