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參數(shù)資料
| 型號(hào)： | TDA5251F1 |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 英文描述： | ASK/FSK 315MHz Wireless Transceiver |
| 中文描述： | 詢(xún)價(jià)/ FSK信號(hào)315MHz的無(wú)線(xiàn)收發(fā)器 |
| 文件頁(yè)數(shù)： | 68/88頁(yè) |
| 文件大?。?/td> | 2086K |
| 代理商： | TDA5251F1 |
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TDA5251 F1
Version 1.0
Application
Preliminary Specification
68
2003-02-18
Confidential
This yields the following results:
TH1~ 738= 001011100010
b
TH2~ 902= 001110000110
b
which have to be programmed into the
D0
to
D11
bits of the
COUNT_TH1
and
COUNT_TH2
registers (subaddresses 06H and 07H), respectively.
Default values (window counter inactive):
TH1= 000000000000
b
TH2= 000000000001
b
Note:
The timing window of +-10% of a given high time T in general does not correspond to a
frequency window +-10% of the calculated data frequency.
3.7.2
RSSI threshold voltage - RF input power
The RF input power level is corresponding to a certain RSSI voltage, which can be seen in Section
3.5. The threshold TH3 of this RSSI voltage can be calculated with the following formula:
As an example a desired RSSI threshold voltage of 500mV results in TH3~26=011010b, which has
to be written into D0 to D5 of the RSSI_TH3 register (sub address 08H).
Default value (RSSI detection inactive):
TH3=111111b
3.8
Calculation of ON_TIME and OFF_TIME
ON= (2
16
-1)-(f
RC
*t
ON
)
OFF=( 2
16
-1)-(f
RC
*t
OFF
)
f
RC
= Frequency of internal RC Oszillator
Example:
t
ON
= 0,005s, t
OFF
= 0,055s, f
RC
= 32300Hz
ON= 65535-(32300*0,005) ~ 65373= 1111111101011101
b
OFF= 65535-(32300*0,055) ~ 63758= 1111100100001110
b
The values have to be written into the
D0
to
D15
bits of the
ON_TIME
and
OFF_TIME
registers
(subaddresses 04H and 05H).
)
1
2
(
6
1.2V
TH3
voltage
threshold
RSSI
desired
[3 – 39]
[3 – 40]
[3 – 41]
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相關(guān)代理商/技術(shù)參數(shù) |
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| TDA5251F1_07 | 制造商:INFINEON 制造商全稱(chēng):Infineon Technologies AG 功能描述:ASK/FSK 315MHz Wireless Transceiver |
| TDA5251XUMA1 | 制造商:Infineon Technologies AG 功能描述:RF Transceiver ASK/FSK 2.5V/3.3V/5V T/R 制造商:Infineon Technologies AG 功能描述:CONTROL - Tape and Reel 制造商:Infineon Technologies AG 功能描述:TXRX FSK/ASK SGL LP TSSOP-38 |
| TDA5252 | 功能描述:射頻接收器 ASK/FSK WIRELESS TRANSCEIVER RoHS:否 制造商:Skyworks Solutions, Inc. 類(lèi)型:GPS Receiver 封裝 / 箱體:QFN-24 工作頻率:4.092 MHz 工作電源電壓:3.3 V 封裝:Reel |
| TDA5252G2 | 制造商:INFINEON 制造商全稱(chēng):Infineon Technologies AG 功能描述:ASK/FSK 915MHz Wireless Transceiver |
| TDA5252XUMA1 | 制造商:Infineon Technologies AG 功能描述:RF Transceiver ASK/FSK 2.5V/3.3V/5V 38-Pin TSSOP T/R 制造商:Infineon Technologies AG 功能描述:CONTROL - Tape and Reel 制造商:Infineon Technologies AG 功能描述:TXRX FSK/ASK SGL LP TSSOP-38 |
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