參數(shù)資料
型號(hào)： T2803-PLQ
廠商： ATMEL CORP
元件分類： 無(wú)繩電話/電話
英文描述： SPST to 4PST Slide DIP Switches
中文描述： TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, QCC48
封裝： 7 X 7 MM, MO-220, QFN-48
文件頁(yè)數(shù)： 13/27頁(yè)
文件大小： 501K
代理商： T2803-PLQ
13
T2803 [Preliminary]
4572G–DECT–01/04
Functional Description
Receiver
The RF signal at RF_IN is fed to an image rejection mixer IR_MIXER with its differential
outputs MIXER_OUT1 and MIXER_OUT2 driving an IF-SAW filter at 110.592 MHz or
112.32 MHz. The IF_AMP1 and IF_AMP2 IF amplifiers with an external IF_TANK and
an integrated RSSI function feed the signal to the demodulator DEMOD working at
f = f
IF
/2 (
≈
55 MHz) and finally to an integrated baseband filter BB. For demodulator
tunning in production an integrated 5-bit digital-to-analog (D/A) converter is provided to
control the on-chip varicap diode.
Transmitter
The transmit data at TX_DATA is filtered by an integrated Gaussian Filter GF and fed to
the fully integrated VCO operating at twice the output frequency. After modulation the
signal is frequency-divided by 2 and fed via a TX/RX SWITCH to the TX_DRIVER. This
bus-controlled driver amplifier supplies typically +3 dBm output power at TX_OUT. A
ramp-signal generator RAMP_GEN, providing a ramp signal at RAMP_OUT for the
external power amplifier, is integrated. The slope of the ramp signal is controlled by a
capacitor at the RAMP_SET pin.
Synthesizer
The IR_MIXER, the TX_DRIVER and the programmable counter PC are driven by the
fully integrated VCO (including on-chip inductors and varactors). The output signal is
frequency-divided to supply the desired frequency to the TX_DRIVER, 0/90 degree
phase shifter for the IR_MIXER and to be used by the PC for the phase detector PD
(f
PD
= 1.728 MHz). Open loop modulation is supported.
Power Supply
An integrated bandgap-stabilized voltage regulator for use with an external low-cost
PNP transistor is implemented. Multiple power-down and current saving modes are
provided.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
T2803-PLQW 功能描述:射頻收發(fā)器 COM.ISM-WDCT SINGLE CHIP TRX RoHS:否 制造商:Atmel 頻率范圍:2322 MHz to 2527 MHz 最大數(shù)據(jù)速率:2000 Kbps 調(diào)制格式:OQPSK 輸出功率:4 dBm 類型: 工作電源電壓:1.8 V to 3.6 V 最大工作溫度:+ 85 C 接口類型:SPI 封裝 / 箱體:QFN-32 封裝:Tray
T2803-PLS 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:2.4 GHZ WDECT/ISM SINGLE CHIP TRANSCEIVER
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T28040200A000G 制造商:SL Power Electronics 功能描述:STEP DOWN AC/AC TX PWR MISC - Bulk 制造商:SL POWER ELECTRONICS INC.- AULT 功能描述:Power Transformer 1500VAC Single Prim. Single Sec. 120V Prim. 4V Sec.
T28040250A000G 制造商:SL Power Electronics 功能描述:STEP DOWN AC/AC TX PWR MISC - Bulk 制造商:SL POWER ELECTRONICS INC.- AULT 功能描述:Power Transformer 1500VAC Single Prim. Single Sec. 120V Prim. 4V Sec.
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