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T2801

ATMEL Corporation
Part Number T2801
Manufacturer ATMEL Corporation
Description DECT Single-Chip Transceiver
Published May 1, 2007
Detailed Description Features • • • • • • • • • Supply Voltage Range 3V to 4.6V (Unregulated) Auxiliary Voltage Regulator On-chip Low Current...
Datasheet PDF File T2801 PDF File

T2801
T2801

Overview
Features • • • • • • • • • Supply Voltage Range 3V to 4.
6V (Unregulated) Auxiliary Voltage Regulator On-chip Low Current Consumption Few Low Cost External Components No Mechanical Tuning Required Non-blindslot and Blindslot Operation Unlimited Multislot Operation with Advanced Closed-loop Modulation Supports Multiple Reference Clocks (10.
368 MHz/13.
824 MHz/20.
736 MHz) TX Preamplifier with 0 dBm Output Power at 1.
9 GHz and Ramp-signal Generator for SiGe Power Amplifier DECT Single-chip Transceiver T2801 1.
Description The T2801 is an RF IC for low-power DECT applications.
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, TX filter and modulation compensation circuit for advanced closed-loop modulation concept.
No mechanical tuning is necessary in production.
Figure 1-1.
Block Diagram www.
DataSheet4U.
com MIXER IF_IN OUT IR MIXER RF_IN DEMOD TANK IF_TANK IF AMP 1 IF AMP 2 CF BB_OUT DEMOD BB FILTER RAMP_OUT RAMP_SET RAMP GEN D/A RSSI DEMOD DAC RSSI VCO TX / RX SWITCH GF TX_DATA PC TX_OUT f :n TX DRIVER PD MCC 3-WIRE BUS CLOCK DATA ENABLE PU_VCO 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 VTUNE GND_VCO PU_REG REG_CTRL CP I_CPSW LD REF_CLK Rev.
4567B–DECT–03/06 Table 1-1.
Name AUX REG BBF CP DAC DEMOD GF IF AMP1 IF AMP2 IR MIXER MCC PC PD RAMP GEN RC RSSI TX DRIVER Functional Block Description Description Auxiliary voltage regulator Baseband filter Charge pump D/A converter for demodulator tuning Demodulator Gaussian filter for transmit data 1st intermediate frequency amplifier 2nd intermediate frequency amplifier Image rejection mixer Modulation compensation circuit Programmable counter Phase detector Ramp-signal generator Reference counter Received signal-strength indicator Buffer amplifier for TX_OU...


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