- 您现在的位置：买卖IC网 > Datasheet目录527 > TH71111ENE-BAA-000-TR (Melexis Technologies NV)IC RECEIVER SGL CONV 32-LQFP Datasheet资料下载
参数资料
| 型号： | TH71111ENE-BAA-000-TR |
| 厂商： | Melexis Technologies NV |
| 文件页数： | 5/20页 |
| 文件大小： | 0K |
| 描述： | IC RECEIVER SGL CONV 32-LQFP |
| 应用说明： | Receiver Design Appl Note |
| 标准包装： | 250 |
| 频率： | 789.3MHz ~ 940.7MHz |
| 灵敏度： | -112dBm |
| 数据传输率 - 最大： | 260 kbps |
| 调制或协议： | ASK，FM，FSK |
| 应用： | 报警和安全系统，RKE，TPMS |
| 电流 - 接收： | 9.2mA |
| 数据接口： | PCB，表面贴装 |
| 天线连接器： | PCB，表面贴装 |
| 电源电压： | 2.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 32-LQFP |
| 供应商设备封装： | 32-LQFP（7x7） |
| 包装： | 托盘 |
| 产品目录页面： | 571 (CN2011-ZH PDF) |
| 其它名称： | TH71111 TH71111.2 TH71111ENE TH71111ENE-ND |
TH71111
868/915MHz
FSK/ASK Receiver
Among them is the image of the RF signal that must be suppressed by the RF front-end filter.
By using the internal PLL synthesizer of the TH71111 with the fixed feedback divider ratio of N = 32
(DIV_32), two types of down-conversion are possible: low-side injection of LO and high-side injection of LO.
The following table summarizes some equations that are useful to calculate the crystal reference frequency
(REF) and the LO frequency, for a given RF and IF.
1.6.1
Injection type
REF
LO
IF
RF image
Selected Frequency Plans
low
(RF – IF)/32
32 ? REF
RF – LO
RF – 2IF
high
(RF + IF)/32
32 ? REF
LO – RF
RF + 2IF
The following table depicts crystal, LO and image signals considering the examples of 868.3 MHz and
915 MHz RF reception at IF = 10.7 MHz.
Signal type
Injection type
REF / MHz
LO / MHz
RF image / MHz
RF = 868.3 MHz
low
26.80000
857.6
846.9
RF = 868.3 MHz
high
27.46875
879.0
889.7
RF = 915 MHz
low
28.25938
904.3
893.6
RF = 915 MHz
high
28.92813
925.7
936.4
The selection of the reference crystal frequency is based on some assumptions. As for example: the image
frequency should not be in a radio band where strong interfering signals might occur (because they could
represent parasitic receiving signals), the LO signal should be in the range of 800 MHz to 930 MHz (because
this is the optimum frequency range of the VCO1). Furthermore the IF should be as high as possible to
achieve highest RF image rejection. The columns in bold depict the selected frequency plans to receive at
868.3 MHz and 915 MHz, respectively.
1.6.2
Maximum Frequency Coverage
Parameter
Injection type
RF / MHz
REF / MHz
LO / MHz
IF/ MHz
39010 71111
Rev. 015
f min
high
789.3
25.0
800
10.7
Page 5 of 20
f max
low
940.7
29.0625
930
10.7
Data Sheet
Jun/12
相关PDF资料 |
PDF描述 |
|---|---|
| TH71112ENE-BAA-000-TR | IC RECEIVER DBL-CON 32-LQFP |
| THS9001DBVTG4 | IC CASCADEABL AMP 350MHZ SOT23-6 |
| TMD26711 | IC PROXIMITY DETECTOR DGTL 8-MOD |
| TN0200K-T1-E3 | MOSFET N-CH 20V 730MA SOT23-3 |
| TN2404K-T1-GE3 | MOSFET N-CH 240V 200MA TO236 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TH71112 | 制造商:MELEXIS 制造商全称:Melexis Microelectronic Systems 功能描述:868/915MHz FSK/FM/ASK Receiver |
| TH71112ENE | 制造商:MELEXIS 制造商全称:Melexis Microelectronic Systems 功能描述:868/915MHz FSK/FM/ASK Receiver |
| TH71112ENE-BAA-000-RE | 制造商:Melexis Semiconductors 功能描述:IC RECEIVER FSK/ASK 32LQFP 制造商:Melexis Semiconductors 功能描述:TH71112 Series 260 kbps 9.2 mA SMT 868/915 MHz FSK/ASK Receiver - LQFP-32 |
| TH71112ENE-BAA-000-TR | 功能描述:IC RECEIVER DBL-CON 32-LQFP RoHS:是 类别:RF/IF 和 RFID >> RF 接收器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS 产品变化通告:Product Discontinuation 09/Jan/2012 标准包装:50 系列:* 频率:850MHz ~ 2.175GHz 灵敏度:- 数据传输率 - 最大:- 调制或协议:- 应用:* 电流 - 接收:* 数据接口:PCB，表面贴装 存储容量:- 天线连接器:PCB，表面贴装 特点:- 电源电压:4.75 V ~ 5.25 V 工作温度:0°C ~ 85°C 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（6x6） 包装:托盘 |
| TH711311 | 制造商:C&K Components 功能描述: |
发布紧急采购，3分钟左右您将得到回复。