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T2803-PLS Datasheet

  • T2803-PLS

  • 2.4 GHZ WDECT/ISM SINGLE CHIP TRANSCEIVER

  • 490.81KB

  • 27页

  • ATMEL   ATMEL

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Features
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Supply-voltage Range 3 V to 4.6 V (Regulated)
Auxiliary Voltage Regulator On-chip (3.2 V to 4.6 V)
Low Current Consumption
Few Low-cost External Components
No Mechanical Tuning Required
Supports Multiple Reference Clocks (10.368 MHz/13.824 MHz)
Fast Settling Synthesizer (864 kHz Channel Spacing)
TX Preamplifier with 3 dBm Output Power at 2.45 GHz (4 Programmable Power Levels)
Ramp-signal Generator for Power Ramping and Power Control of External SiGe Power
Amplifier (T7024 and T7026)
Electrostatic sensitive device.
Observe precautions for handling.
Description
The T2803 is an RF IC for low-power applications in the 2.45 GHz ISM band. The
QFN48-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. No mechanical tuning is necessary in production.
2.4 GHz
WDECT/ISM
Single-chip
Transceiver
T2803
Preliminary
Figure 1.
Block Diagram
MIXER
OUT IF_IN
IR MIXER
RF_IN
DEMOD
BB FILTER
RAMP_OUT
RAMP_SET
RAMP
GEN
RAMP
D/A
D/A
RSSI
DEMOD DAC
RSSI
IF AMP 1
DEMOD
IF_TANK
IF AMP 2
BB_OUT
TANK
CF
VCO
TX/RX
SWITCH
GF
TX_DATA
PC
TX_OUT
TX DRIVER
f
:n
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
OLE
VREG_VCO
VS_VCO
VREG
VS_REG
GND_VCO
PU_REG REG_CTRL VTUNE
CP
I_CPSW
LD
REF_CLK
Rev. 4572G鈥揇ECT鈥?1/04

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