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ATA5744N-TKSY PDF预览

ATA5744N-TKSY

更新时间: 2024-01-29 01:09:43
品牌 Logo 应用领域
爱特美尔 - ATMEL 电信光电二极管电信集成电路
页数 文件大小 规格书
20页 310K
描述
Telecom Circuit, 1-Func, PDSO20, LEAD FREE, SSO-20

ATA5744N-TKSY 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Obsolete零件包装代码:SOIC
包装说明:SSOP, SSOP20,.25针数:20
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.35
JESD-30 代码:R-PDSO-G20JESD-609代码:e3
长度:6.625 mm湿度敏感等级:1
功能数量:1端子数量:20
最高工作温度:105 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:SSOP
封装等效代码:SSOP20,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, SHRINK PITCH峰值回流温度(摄氏度):260
电源:5 V认证状态:Not Qualified
子类别:Other Telecom ICs最大压摆率:0.0087 mA
标称供电电压:5 V表面贴装:YES
电信集成电路类型:TELECOM CIRCUIT温度等级:INDUSTRIAL
端子面层:Matte Tin (Sn) - annealed端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
处于峰值回流温度下的最长时间:40宽度:4.4 mm
Base Number Matches:1

ATA5744N-TKSY 数据手册

 浏览型号ATA5744N-TKSY的Datasheet PDF文件第1页浏览型号ATA5744N-TKSY的Datasheet PDF文件第2页浏览型号ATA5744N-TKSY的Datasheet PDF文件第4页浏览型号ATA5744N-TKSY的Datasheet PDF文件第5页浏览型号ATA5744N-TKSY的Datasheet PDF文件第6页浏览型号ATA5744N-TKSY的Datasheet PDF文件第7页 
ATA5744  
Figure 2-2. Block Diagram  
BR_0  
BR_1  
ASK-  
Dem_out  
DATA  
TEST  
Demodulator  
and data filter  
CDEM  
Data interface  
RSSI  
RSSI  
AVCC  
RSSI IF Amp  
Test  
AGND  
DGND  
MODE  
DVCC  
4. Order  
ENABLE  
LFGND  
LPF  
3 MHz  
MIXVCC  
Standby logic  
LFVCC  
XTO  
LF  
IF Amp  
VCO  
XTO  
LPF  
3 MHz  
LNAGND  
LNA_IN  
f
LNA  
64  
3. RF Front End  
The RF front end of the receiver is a heterodyne configuration that converts the input signal into  
a 1-MHz IF signal. According to Figure 2-2, the front end consists of an LNA (Low-Noise Ampli-  
fier), LO (Local Oscillator), a mixer and RF amplifier.  
The LO generates the carrier frequency for the mixer via a PLL synthesizer. The XTO (crystal  
oscillator) generates the reference frequency fXTO. The VCO (Voltage-Controlled Oscillator) gen-  
erates the drive voltage frequency fLO for the mixer. fLO is dependent on the voltage at pin LF. fLO  
is divided by factor 64. The divided frequency is compared to fXTO by the phase frequency detec-  
tor. The current output of the phase frequency detector is connected to a passive loop filter and  
thereby generates the control voltage VLF for the VCO. By means of that configuration, VLF is  
controlled in a way that fLO/64 is equal to fXTO. If fLO is determined, fXTO can be calculated using  
the following formula:  
fXTO = fLO/64  
The XTO is a one-pin oscillator that operates at the series resonance of the quartz crystal.  
According to Figure 3-1, the crystal should be connected to GND via a capacitor CL. The value  
of that capacitor is recommended by the crystal supplier. The value of CL should be optimized  
for the individual board layout to achieve the exact value of fXTO and hereby of fLO. When design-  
ing the system in terms of receiving bandwidth, the accuracy of the crystal and the XTO must be  
considered.  
3
4893A–RKE–11/05  

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