參數(shù)資料
型號： UPC2533GS-02
廠商： NEC Corp.
英文描述： AM TUNER FOR ELECTRONIC TUNING CAR RADIOS
中文描述： 上午調(diào)諧器電子調(diào)諧汽車收音機
文件頁數(shù)： 14/36頁
文件大小： 212K
代理商： UPC2533GS-02
14
μ
PC2533
2.4 RF AGC Block
Fig. 2-4 RF AGC Block
–
+
–
+
35
36
34
R402
Q402
Q403
Q401
R403
R405
Q405
Q404
R404
R406
D401
R408
Q406
R409
R410
Q407
Q408
R412
AMP.
AMP.
B
Time
constant
switchover
To RF amplifier
circuit (Fig. 2-1)
Detection
and
addition
circuit
From MIX2
(Fig. 2-3)
From MIX1
(Fig. 2-2)
+
The configuration of the RF AGC is shown in Fig. 2-4. After being detected by the RF AGC detector and added,
the input signal from MIX1 and MIX2 is smoothed by external capacitor of pin 34, and its DC voltage controls the RF
AGC.
RF AGC output controls the PIN diode from pin 36 and controls base voltage of cascade transistor which determines
FET V
DS
from pin 35. In addition, by detecting sudden fluctuation of pin 34 voltage and switching over time constants,
RF AGC response convergence when the electric field suddenly changes is improved.
Operation start time of the RF AGC can be delayed slightly by connecting a resistor parallel to the external capacitor
of pin 34.
相關(guān)PDF資料
PDF描述
UPC2533 AM TUNER FOR ELECTRONIC TUNING CAR RADIOS
UPC2539GS DIODE ZENER DUAL ISOLATED 200mW 6Vz 20mA-Izt 0.05 5uA-Ir 3.5 SOT-363 3K/REEL
UPC2539 CONN RCPT MALE 35POS WALL MT
UPC2710TB-E3 122 x 32 pixel format, Compact LCD size
UPC2710TB 5 V, SUPER MINIMOLD SILICON MMIC MEDIUM OUTPUT POWER AMPLIFIER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UPC2535GH-2A5 制造商:未知廠家 制造商全稱:未知廠家 功能描述:FM Receiver Circuit
UPC2539 制造商:NEC 制造商全稱:NEC 功能描述:RDS DATA DEMODULATOR IC
UPC2539GS 制造商:NEC 制造商全稱:NEC 功能描述:RDS DATA DEMODULATOR IC
UPC253A 制造商:未知廠家 制造商全稱:未知廠家 功能描述:INDUSTRIAL LINEAR ICS
UPC254 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*