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T2801-PLQ Datasheet(PDF) 1 Page - ATMEL Corporation |
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T2801-PLQ Datasheet(HTML) 1 Page - ATMEL Corporation |
1 / 31 page 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 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 neces- sary in production. Figure 1-1. Block Diagram TANK PC RC GF MCC CP VCO f : n f : n CTRL LOGIC PD TX / RX SWITCH IR MIXER IF AMP 1 IF AMP 2 DEMOD BB FILTER 3-WIRE BUS DEMOD DAC RSSI TX DRIVER CLOCK DATA ENABLE RX_ON TX_ON PU_RX/TX PU_PLL TX_DATA RSSI BB_OUT CF DEMOD IF_TANK IF_IN MIXER OUT RF_IN TX_OUT VS_VCO CP LD REF_CLK VTUNE VREG VS_REG REG_CTRL VREG_VCO VCO REG RAMP GEN RAMP_OUT RAMP_SET AUX REG PU_VCO PU_REG GND_VCO D/A I_CPSW DECT Single-chip Transceiver T2801 Rev. 4567B–DECT–03/06 |
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