鈥?/div>
Extended Battery Operating Time
Low Current Consumption
Very Small 7
脳
7 mm Package
Few Low Cost External Components
No Mechanical Tuning Required
2.9/5.8 GHz
WDCET/ISM
Single-chip
Transceiver
ATR2808
Summary
1. Description
The ATR2808 is an RF IC for low-power applications in the 5.8 GHz ISM band. The
QFN 48-packaged IC is a complete transceiver including image rejection mixer, IF
amplifier, FM demodulator, baseband filter, RSSI, TX preamplifier, power-ramping
generator for power amplifiers, integrated synthesizer, fully integrated VCO and gaus-
sian data filter for TX.
Figure 1-1.
Block Diagram
MIXER
IF_IN
OUT
IR MIXER
RF_IN
DEMOD
BB FILTER
RAMP_OUT
RAMP_SET
RAMP
GEN
RAMP
D/A
D/A
RSSI
DEMOD DAC
RSSI
GF
TX_DATA
DEMOD
IF_TANK
IF AMP 1
IF AMP 2
BB_OUT
TANK
CF
VCO
TX / RX
SWITCH
PC
TX_OUT
f
:n
TX DRIVER
PD
3-WIRE
BUS
CLOCK
DATA
ENABLE
VCO
REG
AUX
REG
CP
RC
f
:n
CTRL
LOGIC
RX_ON
TX_ON
PU_RX/TX
PU_PLL
VREG_VCO
VS_VCO
VREG
VS_REG
OLE
GND_VCO
PU_REG REG_CTRL VTUNE
CP
I_CPSW
LD
REF_CLK
Rev. 4693ES鈥揇ECT鈥?3/06
Note: This is a summary document. A complete document
is available under NDA. For more information, please con-
tact your local Atmel sales office.
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