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| 型號： | AMIS-53050 |
| 英文描述： | Frequency Agile Transceiver |
| 中文描述： | 捷變頻收發(fā)器 |
| 文件頁數(shù)： | 24/107頁 |
| 文件大?。?/td> | 2576K |
| 代理商： | AMIS-53050 |
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AMIS-53050
Frequency Agile Transceiver
Data Sheet
24
AMI Semiconductor
– Jan. 07, M-20639-002
www.amis.com
tion on proper selection of the capacitor values.
d. The time constant (corner frequency) for this filter is in turn
etermined by the value of the capacitor connected to the PEAK pin. A typical capacitor value would allow the average level to settle to
95 percent of the RSSI level in 2 bit intervals (remember that Manchester encoding may have transitions twice the data rate). The
chatter before a signal is received and after the signal ends, which should be considered for proper
operation of the external host controller.
In the peak method, the peak detector circuitry is enabled, followed by detection of the maximum input signal level and setting of the
threshold level 6dB lower than the maximum level, respectively. The capacitor connected to the PEAK pin is used to bleed or discharge
the peak voltage in the circuit. The voltag
c
f zeros that are allowed in the chosen data protocol, NRZ or Manchester
e swing on the RSSI for a typical 12dB signal to noise ratio at 10 BER is 240mV. The
apacitor value should not change the voltage by more than this 240mV during a string of zeros. The value is dependent on the
number o
In the AM
oise floor and/or the gain of the receiver due to temperature and voltage. This is done by setting a false wake-up value (number of
n
false wake-ups during a given number of sniff events).
encoded.
er to accommodate changes in the external
5.5 Peak
There are three methods for slicing the received OOK modulated signal to recover the data. The first method is based on setting a
threshold value that is fixed and to which the receiver compares the recovered signal. The other two methods are based on automatic
setting of this threshold level. These automatic threshold methods require an external capacitor on the PEAK pin to operate. Please
efer to the Application Note “Setting up the Data Slicing Modes” for informa
r
In the averaging method, the transceiver’s low pass filter circuitry is enabled, with a cut-off frequency set below the data rate filter
setting. This filter extracts an average RSSI level as the data slice threshol
d
average threshold method will have
IS-53050, the sniff function can be used to adjust the threshold energy level in ord
Figure 12: Peak Capacitance Circuit
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相關(guān)代理商/技術(shù)參數(shù) |
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| AMIS-53050-I/A | 制造商:AMI 制造商全稱:AMI 功能描述:Frequency Agile Transceiver |
| AMIS-53050-XTD | 功能描述:射頻收發(fā)器 AMIS-53050 WLESS TRNSCVR 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 |
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| AMIS-710201 | 制造商:AMI 制造商全稱:AMI 功能描述:200dpi CIS Module |
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