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參數(shù)資料
| 型號： | T2802-PLQ |
| 廠商： | ATMEL CORP |
| 元件分類： | 無繩電話/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, QFN-48 |
| 文件頁數(shù)： | 13/29頁 |
| 文件大?。?/td> | 550K |
| 代理商： | T2802-PLQ |
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13
T2802
4509F–DECT–10/03
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 amplifiers IF_AMP1 and IF_AMP2 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). A 3-bit digital-to-analog
converter is used to pretune the frequency. 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
= 3.456 MHz).
Unlimited multislot operation is possible by using the integrated advanced closed-loop
modulation concept based on the modulation compensation circuit MCC.
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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相關代理商/技術參數(shù) |
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|---|---|
| T2803 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:2.4 GHZ WDECT/ISM SINGLE CHIP TRANSCEIVER |
| T2803_05 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:2.4 GHZ WDECT/ISM SINGLE CHIP TRANSCEIVER |
| T28030100A000G | 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. 3V Sec. |
| T28030200A000G | 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. 3V Sec. |
| T2803-PLH | 功能描述:IC TRANSCEIVER 2.5GHZ 48-QFN RoHS:否 類別:RF/IF 和 RFID >> RF 收發(fā)器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:30 系列:- 頻率:4.9GHz ~ 5.9GHz 數(shù)據(jù)傳輸率 - 最大:54Mbps 調(diào)制或協(xié)議:* 應用:* 功率 - 輸出:-3dBm 靈敏度:- 電源電壓:2.7 V ~ 3.6 V 電流 - 接收:* 電流 - 傳輸:* 數(shù)據(jù)接口:PCB，表面貼裝 存儲容量:- 天線連接器:PCB，表面貼裝 工作溫度:-25°C ~ 85°C 封裝/外殼:68-TQFN 裸露焊盤 包裝:管件 |
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