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ATR4255-ILQH PDF预览

ATR4255-ILQH

更新时间: 2024-01-25 19:51:17
品牌 Logo 应用领域
爱特美尔 - ATMEL /
页数 文件大小 规格书
32页 377K
描述
AM/FM RECEIVER IC

ATR4255-ILQH 技术参数

是否Rohs认证: 符合生命周期:Obsolete
零件包装代码:SSOP包装说明:SSOP,
针数:44Reach Compliance Code:unknown
风险等级:5.84商用集成电路类型:AUDIO DEMODULATOR
解调类型:AM/FM谐波失真:0.6%
JESD-30 代码:R-XDSO-G44JESD-609代码:e3
长度:17.925 mm湿度敏感等级:1
功能数量:1端子数量:44
最高工作温度:85 °C最低工作温度:-40 °C
输出电压标称(AM):400 mV标称输出电压(调频):480 mV
封装主体材料:UNSPECIFIED封装代码:SSOP
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, SHRINK PITCH
认证状态:Not Qualified座面最大高度:2.6 mm
信噪比Nom(FM):65 dB最大供电电压 (Vsup):10 V
最小供电电压 (Vsup):7.5 V表面贴装:YES
技术:BICMOS温度等级:INDUSTRIAL
端子面层:Matte Tin (Sn) - annealed端子形式:GULL WING
端子节距:0.8 mm端子位置:DUAL
宽度:7.4 mm

ATR4255-ILQH 数据手册

 浏览型号ATR4255-ILQH的Datasheet PDF文件第4页浏览型号ATR4255-ILQH的Datasheet PDF文件第5页浏览型号ATR4255-ILQH的Datasheet PDF文件第6页浏览型号ATR4255-ILQH的Datasheet PDF文件第8页浏览型号ATR4255-ILQH的Datasheet PDF文件第9页浏览型号ATR4255-ILQH的Datasheet PDF文件第10页 
ATR4255  
Table 6. Gain of the FM IF Amplifier  
Gain FM IF  
20 dB  
Bit 91  
Bit 90  
Bit 89  
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
22 dB  
24 dB  
26 dB  
28 dB  
29 dB  
30 dB  
31 dB  
Table 7. Temperature Coefficient Setting of FM IF Amplifier  
Temperature Coefficient (TC) of the IF Amplifier  
Bit 66  
TKmin  
TKmax  
0
1
AM 1st IF Amplifier  
2nd Mixer  
In AM mode, the gain of the 1st IF amplifier is controlled by the IF-AGC to extend the  
control range of the IF-AGC.  
The 2nd mixer is used in AM, FM and WB mode. The mixer input has 330 input resis-  
tance and can be connected directly to an external ceramic filter.  
In FM mode, the high output resistance of the second mixer is reduced to increase the  
bandwidth of the tank at the mixer output. The output resistance can be selected by  
bit 60 and bit 61.  
Table 8. 2nd Mixer Output Resistance in FM Mode  
Bit 61  
Bit 60  
Output Resistance (Bit 54 = 0)  
Output Resistance (Bit 54 = 1)  
0
0
1
1
0
1
0
1
3.3 kΩ  
0.63 kΩ  
0.47 kΩ  
0.29 kΩ  
~100 kΩ  
0.78 kΩ  
0.55 kΩ  
0.32 kΩ  
The LO frequency of the 2nd mixer (10.25 MHz) has to be applied at pin 22. This signal  
is usually generated by the PLL circuit U4256BM.  
Table 9. FM Bandwidth Mixer 2  
Bit 61  
Bit 60  
FM BW Mixer 2  
150 kHz  
0
0
1
0
1
0
1
200 kHz  
250 kHz  
1
450 kHz  
Note:  
The bandwidth is also depending from the values of the application circuit.  
7
4837A–AUDR–10/04  

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