T2801 Datasheet, PDF (1/27 Pages) ATMEL Corporation – DECT Single-Chip Transceiver

DECT Single-Chip Transceiver
T2801
Description
The T2801 is an RF IC for low-power DECT appli-
cations. The HP-VFQFP-N48-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, inte-
grated synthesizer, fully integrated VCO, TX filter and
modulation compensation circuit for advanced closed-
loop modulation concept. No mechanical tuning is
necessary in production.
Electrostatic sensitive device.
Observe precautions for handling.
Features
D Supply-voltage range 3 V to 4.6 V (unregulated)
D Auxiliary-voltage regulator on-chip
D Low current consumption
D Few low cost external components
D No mechanical tuning required
D Non-blindslot and blindslot operation
D Unlimited multislot operation with advanced closed-
loop modulation
D Supports multiple reference clocks (10.368 MHz/
13.824 MHz/ 20.736 MHz)
D TX preamplifier with 0 dBm output power at 1.9 GHz
and ramp-signal generator for SiGe power amplifier
Block Diagram
MIXER
OUT ^IF_IN
IF_TANK
DEMOD
TANK
CF
IR MIXER
IF AMP 1
IF AMP 2
RF_IN
RAMP_OUT
RAMP_SET
RAMP
GEN
RSSI
DEMOD
BB FILTER
D/A _{DEMOD DAC}
BB_OUT
RSSI
TX / RX
VCO
GF
SWITCH
TX_DATA
TX_OUT
PC
PD
f
:n
TX DRIVER
PU_VCO
VCO
REG
CP
AUX
REG
MCC ^3-WIRE
BUS
RC
f
:n
CTRL
LOGIC
CLOCK
DATA
ENABLE
RX_ON
TX_ON
PU_RX/TX
PU_PLL
VREG_VCO VS_VCO VREG VS_REG VTUNE
GND_VCO PU_REG REG_CTRL
CP
LD
I_CPSW
Figure 1. Block diagram
REF_CLK
Ordering Information
Extended Type Number
T2801-PLH
Package
HP-VFQFP-N48
Remarks
Taped and reeled
Rev. A9, 11-Dec-01
1 (27)
Preliminary Information