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Teilenummer | SL1018 |
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Beschreibung | FM IF SYSTEM | |
Hersteller | AUK corp | |
Logo | ||
Gesamt 9 Seiten Semiconductor
SL1018
FM IF SYSTEM
Description
The SL1018 has versatile muting characteristics and allows receiver designers to realize the
muting performance according to their design concept.
Functions
• FM IF Amplifier/Limiter • Quadrature Detector • AFC Clamp • AGC Drive
• AF Mute Amplifier • Signal Meter Drive • DC Level Detector
Features
• Adjustable muting sensitivity • Soft muting function
• Variable maximum muting attenuation (6dB~40dB)
• Variable muting slope with respect to input signal level
• High limiting sensitivity with muting off • Good S/N ratio
• Clamped AFC output • Delayed AGC output for front end circuit
• Recommended supply voltage: VCC =8V
• Operating supply voltage range: VCC =7.5V~16V
• Low distortion • Good AMR
Application
• FM car stereo receiver
Ordering Information
Type NO.
SL1018
Marking
SL1018
Package Code
ZIP16
Outline Dimensions
45o
1.02
5.49
1.52
24.38
15.24
φ1.27 •0.31d
1.50 0.51
22.48
3.0
2 • φ3.05 • 0.13d
φ1.52 • 0.13d
3.05
7.11
12.12
1.78
3.23
0.51
0.254
3.00
unit : mm
3.0
KSI-W016-000
1
SL1018
Information On Muting Characteristics (continued)
Furthermore, varying the value of a resistor connected between the pin14 and pin16
changes the value of the muting control current required to obtain the same muting drive
output, accordingly a slope of curve for muting attenuation vs. antenna signal input level is
also changed. Fig. 4 shows these characteristics investigated by using an actual receiver.
The method to adjust the muting circuit is to set the signal input level required to actuate
the muting circuit with the R16 , to adjust the slope of the curve for the muting attenuations
vs. antenna signal input with the R15 and to adjust the maximum muting attenuation
determined by setting the noise level at no signal.
The slope of the curve for the muting attenuation vs. antenna signal input level can also be
adjusted by the resistor connected between the pin14 and the pin6. However, if the resistor
is too high, the muting control current does not flow into pin6 over than 120 ㎂ even
though the maximum muting drive output(V14) is applied, namely the muting attenuation
doesn't reach its maximum value. A recommended value of the resistor between the pin14
and the pin6 is about 22kΩ.
5
V 15
4
3
2
1
V 14
V 16
0
A NT In pu t
- F-Fiigg..44- -
KSI-W016-000
6
6 Page | ||
Seiten | Gesamt 9 Seiten | |
PDF Download | [ SL1018 Schematic.PDF ] |
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