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TDA9821 PDF预览

TDA9821

更新时间: 2024-01-30 00:51:18
品牌 Logo 应用领域
恩智浦 - NXP 电视
页数 文件大小 规格书
16页 124K
描述
Dual channel TV FM intercarrier sound demodulator

TDA9821 技术参数

是否Rohs认证: 符合生命周期:Obsolete
Reach Compliance Code:unknown风险等级:5.7
商用集成电路类型:AUDIO DEMODULATOR解调类型:FM
谐波失真:0.25%JESD-30 代码:R-PDIP-T16
长度:21.6 mm功能数量:2
端子数量:16最高工作温度:70 °C
最低工作温度:标称输出电压(调频):500 mV
封装主体材料:PLASTIC/EPOXY封装代码:DIP
封装形状:RECTANGULAR封装形式:IN-LINE
峰值回流温度(摄氏度):245认证状态:Not Qualified
座面最大高度:4.7 mm信噪比Nom(FM):68 dB
最大压摆率:37 mA最大供电电压 (Vsup):8.8 V
最小供电电压 (Vsup):4.5 V表面贴装:NO
温度等级:COMMERCIAL端子形式:THROUGH-HOLE
端子节距:2.54 mm端子位置:DUAL
处于峰值回流温度下的最长时间:40宽度:7.62 mm
Base Number Matches:1

TDA9821 数据手册

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Philips Semiconductors  
Product specification  
Dual channel TV FM intercarrier  
sound demodulator  
TDA9821  
Notes  
1. The output signal at pin 7 can only be measured when mute is disabled. This is achieved by inserting a resistor of  
2.7 kbetween pin 15 and ground. In this event the input impedance is 490 .  
2. Improvement of ripple rejection is possible by connecting series RC between pin 11 and pin 14 (15 k+ 2.2 µF;  
see Fig.5) for a supply voltage of 4.5 to 5.5 V. The rejection of ripple frequencies up to 3 kHz is improved, but up to  
200 kHz is worse; see Fig.3.  
MHA530  
40  
RR  
(dB)  
(1)  
30  
(2)  
20  
10  
0
4
5
6
7
8
V
(V)  
9
P
The curves are typical and valid for ripple frequencies between 50 Hz and 3 kHz.  
Conditions: input signal: f = 5.5 MHz, 10 mV (RMS value); ripple on VP = 100 mV (RMS value), fr = 1 kHz;  
ripple rejection measurement: unweighted RMS.  
(1) Without RC.  
(2) With R = 15 kand C = 2.2 µF.  
Fig.3 Typical improvement.  
1996 Nov 20  
8

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