參數(shù)資料
型號: LM3189N
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 接收器
英文描述: LM3189 FM IF System
中文描述: FM, AUDIO DEMODULATOR, PDIP16
封裝: PLASTIC, DIP-16
文件頁數(shù): 3/8頁
文件大?。?/td> 210K
代理商: LM3189N
Test Circuits
Test Circuit for LM3189N Using a Single-Tuned Detector Coil
All resistance values are in
X
*
L tunes with 100 pF (C) at 10.7 MHz,
Q
o
(unloaded)
j
75 (Toko No. KACS K586HM
or equivalent)
**
C
e
0.01
m
F for 50
m
s de-emphasis (Europe)
e
0.015
m
F for 75
m
s de-emphasis (USA)
TL/H/7960–3
Test Circuit for LM3189N Using a Double-Tuned Detector Coil
All resistance values are in
X
*
T:PRIDQ
o
(unloadedD
j
75 (tunes with 100 pF
(C12)) 20t of 34e on 7/32
×
dia form
SECDQ
o
(unloaded)
j
75 (tunes with 100 pF
(C2)) 20t of 34e on 7/32
×
dia form
kQ(percent of critical coupling)
j
70%
(adjusted for coil voltage (V
C
)
e
150 mV
Above values permit proper operation of mute
(squelch) circuit ‘‘E’’ type slugs, spacing 4 mm
**
C
e
0.01
m
F for 50
m
s de-emphasis (Europe)
e
0.015
m
F for 75
m
s de-emphasis (USA)
TL/H/7960–4
3
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