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| 型号： | SX1223SK433 |
| 厂商： | Semtech |
| 文件页数： | 22/25页 |
| 文件大小： | 0K |
| 描述： | KIT STARTER FOR XE1223 433MHZ |
| 产品培训模块： | SX1223 ISM Transmitter |
| 标准包装： | 1 |
| 类型： | 发射器，UHF |
| 频率： | 433MHz |
| 适用于相关产品： | XE1223（433MHz） |
| 已供物品： | 2 个板，2 个模块，2 根天线，线缆，文档 |
| 产品目录页面： | 584 (CN2011-ZH PDF) |
SX1223
6.2 REFERENCE CRYSTAL FOR THE FREQUENCY SYNTHESIZER
The crystal for the reference oscillator of the frequency synthesizer should have the following typical characteristics:
Name
Fs
Description
Nominal frequency
Min. value
-
Typ. value
16.0 MHz
Max. value
-
(fundamental)
CL
Rm
Cm
C0
Load capacitance for fs (on-chip)
Motional resistance
Motional capacitance
Shunt capacitance
-
-
-
-
9 pF
-
-
-
-
40 ?
30 fF
7 pF
Table 34: Crystal characteristics
6.3 LOOP FILTER COMPONENTS
The loop filter component values used in MW2 mode for specification validation are presented below; (see fig.5b)
R1
12k
C1
470pF
C2
4.7nF
C3
33nF
6.4
RECOMMENDED MODULATION CONDITIONS
Bit
rate
Frequency
deviation
Modulation
type
Max. carrier
frequency
Coding
Allowed transmission mode
[kb/s]
[kHz]
step
1.2
5 to 255
mw3
Up to 300
NRZ
Continuous
2.4
4.8
9.6
19.2
5 to 255
5 to 255
10 to 255
20 to 255
kHz,
not regularly
spaced
32.8
38.4
76.8
153.6
40 to 255
100 to 255
40 to 255
100 to 255
80 to 255
100 to 255
200 to 255
100 to 255
mw1
mw2
mw1
mw2
mw1
mw2
mw1
mw2
≤ 100 kHz
≤ 100 kHz
≤ 100 kHz
≤ 100 kHz
≤ 100 kHz
≤ 100 kHz
≤ 100 kHz
≤ 100 kHz
Manchester
NRZ
Manchester
NRZ
Manchester
NRZ
Manchester
NRZ
Continuous
Burst (1 kbits for ? f ≥ 100 kHz)
Continuous
Burst (1 kbits for ? f ≥ 100 kHz)
Continuous
Burst (2 kbits for ? f ≥ 100 kHz)
Continuous
Burst (4 kbits for ? f ≥ 100 kHz)
Table 35: Modulation Type Selection
? Semtech 2007
22
www.semtech.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SX1223SK868 | 功能描述:KIT STARTER FOR XE1223 868MHZ RoHS:是 类别:RF/IF 和 RFID >> RF 评估和开发套件，板 系列:- 标准包装:1 系列:- 类型:GPS 接收器 频率:1575MHz 适用于相关产品:- 已供物品:模块 其它名称:SER3796 |
| SX1223SK915 | 功能描述:KIT STARTER FOR XE1223 915MHZ RoHS:是 类别:RF/IF 和 RFID >> RF 评估和开发套件，板 系列:- 标准包装:1 系列:- 类型:GPS 接收器 频率:1575MHz 适用于相关产品:- 已供物品:模块 其它名称:SER3796 |
| SX1230 | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Integrated Transmitter IC Narrow/wideband 315 MHz, 434 MHz 868 MHz and 915 MHz band Transmitter |
| SX1230-11SKA433 | 制造商:Semtech Corporation 功能描述:Evaluation Kit For SX1230-11SKA 433 mHz (SX1230SKA /SX1211SKA board) Transmitter |
| SX1230-11SKA868 | 制造商:Semtech Corporation 功能描述:NARROW/WIDEBAND RF TRANSMITTER 868MHZ |
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