- 您现在的位置：买卖IC网 > PDF目录18801 > SI4022-A0-FTR (Silicon Laboratories Inc)IC TX FSK UNI 868/915MHZ 16TSSOP PDF资料下载
参数资料
| 型号： | SI4022-A0-FTR |
| 厂商： | Silicon Laboratories Inc |
| 文件页数： | 17/20页 |
| 文件大小： | 726K |
| 描述： | IC TX FSK UNI 868/915MHZ 16TSSOP |
| 标准包装： | 2,000 |
| 频率： | 868MHz，915MHz |
| 应用： | ISM |
| 调制或协议： | FSK |
| 数据传输率 - 最大： | 115.2kbps |
| 功率 - 输出： | 6dBm |
| 电流 - 传输： | 24mA |
| 数据接口： | PCB，表面贴装 |
| 天线连接器： | PCB，表面贴装 |
| 电源电压： | 2.2 V ~ 3.8 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm 宽） |
| 包装： | 带卷 (TR) |
17
Si4022
Bit Rate:
20
40
60
80
100
120
140
160
868
2
12
25
30
40
50
70
80
915
2
12
20
30
40
50
60
70
Bit Rate:
20
40
60
80
100
120
140
160
868
do not use
8
20
30
40
50
60
70
915
do not use
8
15
30
40
50
60
70
Bit Rate:
20
40
60
80
100
120
140
160
868
do not use do not use
10
20
30
40
50
70
915
do not use do not use
10
20
30
40
50
60
Bit Rate:
20
40
60
80
100
120
140
160
868
do not use do not use do not use do not use do not use
2
12
25
915
do not use do not use do not use do not use do not use
2
12
20
2.4 kbps
9.6 kbps
38.4 kbps
115.2 kbps
Transmitter Deviation [+/- kHz]
Transmitter Deviation [+/- kHz]
Transmitter Deviation [+/- kHz]
Transmitter Deviation [+/- kHz]
CRYSTAL SELECTION GUIDELINES
The crystal oscillator of the Si4022 requires a 10 MHz parallel mode crystal. The circuit contains an integrated load capacitor in order
to minimize the external component count. The internal load capacitance value is programmable from 8.5 pF to 16 pF in 0.5 pF steps.
With appropriate PCB layout, the total load capacitance value can be 10 pF to 20 pF so a variety of crystal types can be used.
When the total load capacitance is not more than 20 pF and a worst case 7 pF shunt capacitance (C
0
) value is expected for the crystal,
the oscillator is able to start up with any crystal having less than 300 ohms ESR (equivalent series loss resistance). However, lower
C
0
and ESR values guarantee faster oscillator startup. It is recommended to keep the PCB parasitic capacitances on the XTL pin as
low as possible.
The crystal frequency is used as the reference of the PLL, which generates the RF carrier frequency (f
c
). Therefore f
c
is directly
proportional to the crystal frequency. The accuracy requirements for production tolerance, temperature drift and aging can thus be
determined from the maximum allowable carrier frequency error.
Maximum XTAL Tolerances Including Temperature and Aging [ppm]
Whenever a low frequency error is essential for the application, it is possible to pull the crystal to the accurate frequency by
changing the load capacitor value. The widest pulling range can be achieved if the nominal required load capacitance of the crystal
is in the midrange , for example 16 pF. The pull-ability of the crystal is defined by its motional capacitance and C
0
.
Note:
Note:
Note:
Note:
Note: There may be other requirements for the TX carrier accuracy with regards to the requirements as defined by standards and/or
channel separations.
相关PDF资料 |
PDF描述 |
|---|---|
| AS5030-ATST | IC ENCODER ROTARY 8-BIT 16-TSSOP |
| ELK-TT330IA | DIGITAL NOISE FILTER 20MHZ |
| MDA600-18N1 | DIODE MODULE STD 1800V CA DUAL |
| RA201836XX | RECTIFIER 1800V 3600A |
| MDK600-16N1 | DIODE MODULE 1600V DUAL |
相关代理商/技术参数 |
参数描述 |
|---|---|
| Si4022-A1-FT | 功能描述:射频发射器 TRNSMITTR EZRadio UNIVRSL ISM BAND FSK RoHS:否 制造商:Micrel 类型:ASK Transmitter 封装 / 箱体:SOT-23-6 工作频率:300 MHz to 450 MHz 封装:Reel |
| SI-40232 | 制造商:BEL 制造商全称:Bel Fuse Inc. 功能描述:SI-40232 |
| SI-40233 | 制造商:BEL 制造商全称:Bel Fuse Inc. 功能描述:SI-40233 |
| SI-40234 | 制造商:BEL 制造商全称:Bel Fuse Inc. 功能描述:SI-40234 |
| SI-40235 | 制造商:BEL 制造商全称:Bel Fuse Inc. 功能描述:SI-40235 |
发布紧急采购，3分钟左右您将得到回复。