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參數(shù)資料
| 型號(hào)： | RFHCS362F |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | Code Hopping Encoder with UHF ASK/FSK Transmitter |
| 中文描述： | 跳碼編碼器的超高頻ASK / FSK發(fā)射器 |
| 文件頁數(shù)： | 35/60頁 |
| 文件大?。?/td> | 502K |
| 代理商： | RFHCS362F |
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2002 Microchip Technology Inc.
Preliminary
DS41189A-page 35
rfHCS362G/362F
6.7
Mode Control Logic
The mode control logic pin RFEN
IN
controls the oper-
ation of the transmitter (Table 6-7). When RFEN
IN
goes high, the crystal oscillator starts up. The voltage
on the LF pin ramps up proportionally to the RF fre-
quency. The PLL can lock onto the frequency faster
than the starting up crystal can stabilize. When the LF
pin reaches 0.8V, the RF frequency is close to locked
on the crystal frequency. This initiates a 150 micro-
second delay to ensure that the PLL settles. After the
delay, the PS/DATA
ASK
bias current and power ampli-
fier are enabled to start transmitting.
When RFEN
IN
goes low, the transmitter goes into low
power Standby mode. The power amplifier is dis-
abled, the crystal oscillator stops, and the PS/
DATA
ASK
pin is driven low. This will be a conflict if other
circuitry drives the PS/DATA
ASK
pin high while RFEN
IN
is low. The encoder DATA pin is typically the only con-
nection to PS/DATA
ASK
and it always drives DATA low
before RFEN
OUT
goes low.
For most applications the RFEN
IN
pin is connected
directly to the RFEN
OUT
pin. The RFEN
IN
pin has an
internal pull-down resistor.
TABLE 6-7:
RFEN
IN
PIN STATES
RF
EN
Description
0
1
Transmitter and CLKOUT in Standby
Transmitter and CLKOUT enabled
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| RFHCS362F-I/SS | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Code Hopping Encoder RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| RFHCS362FT-I/SS | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Code Hopping Encoder RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| RFHCS362G | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Code Hopping Encoder with UHF ASK/FSK Transmitter |
| RFHCS362G/362F | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MCP23016 Datasheet |
| RFHCS362G_11 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:KEELOQ? Code Hopping Encoder with UHF ASK/FSK Transmitter |
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