參數資料
型號: LA1137NM
元件分類: 接收器
英文描述: AM, AUDIO SINGLE CHIP RECEIVER, PDSO20
封裝: MFP-20
文件頁數: 7/19頁
文件大?。?/td> 720K
代理商: LA1137NM
(5) Sample RF alignment coil selectivity characteristics (Mitsumi)
New coil designs should have the same selectivity characteristics as shown below.
5.
Problems Concerning Wideband AGC
Because the LA1136N and the LA1137N offer many sophisticated functions, a number of their pins are dual-purpose pins. An
example is pin 3 (on both the LA1136N and the LA1137N), which serves both as the wideband AGC input pin and the antenna
dumping pin diode drive pin. As a result, particular attention must be given to the wiring pattern layout, since feedthrough of other
signals as shown in the figure below can cause AGC to operate without input, resulting in reduced sensitivity.
RF characteristics at 600 kHz
RF characteristics at 1 MHz
RF characteristics at 1.4 MHz
Avoid direct
feedthrough from the
RF amplifier to the
pin 3 line.
LA1136N/1137N Antenna, RF circuit
Unit (resistance: Ω, capacitance: F)
LA1136N, 1136NM, 1137N, 1137NM
No. 3507-15/28
相關PDF資料
PDF描述
LA1137N AM, AUDIO SINGLE CHIP RECEIVER, PDIP20
LA1136NM AM, AUDIO SINGLE CHIP RECEIVER, PDSO24
LA1136N AM, AUDIO SINGLE CHIP RECEIVER, PDIP24
LA1143 FM, AUDIO DEMODULATOR, PDIP16
LA1145M SPECIALTY CONSUMER CIRCUIT, PDSO20
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