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參數資料
| 型號： | ADF7020 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | High Performance ISM Band FSK/ASK Transceiver IC |
| 中文描述： | 高性能ISM頻段FSK信號/賣出收發芯片 |
| 文件頁數： | 15/40頁 |
| 文件大小： | 797K |
| 代理商： | ADF7020 |
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Preliminary Technical Data
ADF7020
Gaussian Frequency Shift Keying (GFSK)
Gaussian frequency shift keying reduces the bandwidth
occupied by the transmitted spectrum by digitally prefiltering
the TxData. A TxCLK output line is provided from the
ADF7020 for synchronization of TxData from the micro-
controller. The TxCLK line can be connected to the clock input
of a shift register that clocks data to the transmitter at the exact
data rate.
Setting Up the ADF7020 for GFSK
To set up the frequency deviation, set the PFD and the mod
control bits:
Rev. PrH | Page 15 of 40
12
2
2
]
Hz
[
m
DEVIATION
PFD
GFSK
×
=
where
m
is GFSK_MOD_CONTROL set using R2_DB(24:26).
To set up the GFSK data rate:
COUNTER
INDEX
FACTOR
DIVIDER
PFD
×
DR
_
_
]
bps
[
=
For further information, see the application note,
Using GFSK
on the ADF7010
, in the EVAL-ADF7010EB1 Technical Note.
Amplitude Shift Keying (ASK)
Amplitude shift keying is implemented by switching the output
stage between two discrete power levels. This is accomplished
by toggling the DAC, which controls the output level between
two 6-bit values set up in Register 2. A zero TxData bit sends
Bits R2_DB(15:20) to the DAC. A high TxData bit sends Bits
R2_DB(9:14) to the DAC. A maximum modulation depth of
30 dB is possible.
On-Off Keying (OOK)
On-off keying is implemented by switching the output stage to a
certain power level for a high TxData bit and switching the
output stage off for a zero. For OOK, the transmitted power for
a high input is programmed using Bits R2_DB(9:14).
Gaussian On-Off Keying (G-OOK)
Gaussian on-off keying represents a prefiltered form of OOK
modulation. The usually sharp symbol transitions are replaced
with smooth Gaussian filtered transitions, the result being a
reduction in frequency pulling of the VCO. Frequency pulling
of the VCO in OOK mode can lead to a wider than desired BW,
especially if it is not possible to increase the loop filter BW >
300 kHz. The G-OOK sampling clock samples data at the data
rate. (See the Setting Up the ADF7020 for GFSK section.)
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相關代理商/技術參數 |
參數描述 |
|---|---|
| ADF7020-1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:High Performance FSK/ASK Transceiver IC |
| ADF7020-1BCPZ | 功能描述:IC TX FSK/ASK ISM BAND 48LFCSP RoHS:是 類別:RF/IF 和 RFID >> RF 收發器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:30 系列:- 頻率:4.9GHz ~ 5.9GHz 數據傳輸率 - 最大:54Mbps 調制或協議:* 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:* 數據接口: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 |
| ADF7020-1BCPZ-RL | 功能描述:IC TX FSK/ASK ISM BAND 48-LFCSP RoHS:是 類別:RF/IF 和 RFID >> RF 收發器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:30 系列:- 頻率:4.9GHz ~ 5.9GHz 數據傳輸率 - 最大:54Mbps 調制或協議:* 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:* 數據接口: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 |
| ADF7020-1BCPZ-RL7 | 功能描述:IC TX FSK/ASK ISM BAND 48-LFCSP RoHS:是 類別:RF/IF 和 RFID >> RF 收發器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:30 系列:- 頻率:4.9GHz ~ 5.9GHz 數據傳輸率 - 最大:54Mbps 調制或協議:* 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:* 數據接口: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 |
| ADF7020BCP | 制造商:AD 制造商全稱:Analog Devices 功能描述:High Performance ISM Band FSK/ASK Transceiver IC |
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