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Número de pieza | S1T3361D01 | |
Descripción | LOW VOLTAGE/POWER NARROW BAND FM IF | |
Fabricantes | Samsung semiconductor | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de S1T3361D01 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
No Preview Available ! LOW VOLTAGE/POWER NARROW BAND FM IF
INTRODUCTION
The S1T3361D is designed for use in FM dual conversion
communication. It contains a complete narrow band FM demodulation
system operable to less than 2.5V supply voltage. This low-power
narrow-band FM IF system provides the second converter, second IF,
demodulator. Filter Amp and squelch circuitry for communications and
scanning receivers.
16−DIP−300A
FEATURES
• Low power consumption (4.0mA typ. at VCC = 4.0V)
• Excellent input sensitivity
(-3dB limiting, 2.0µVrms typ.)
• Minimum number of external components required.
• Operating Voltage: 2.5 to 7.0V
16−SOP−225A
APPLICATIONS
• Cordless phone (for home usage)
• FM dual conversion communications equipment
ORDERING INFORMATION
Device
S1T3361D01-D0B0
S1T3361D01-S0B0
Package
16−DIP−300A
16−SOP−225A
Operating Temperature
− 20°C to +70°C
S1T3361D
1
1 page LOW VOLTAGE/POWER NARROW BAND FM IF
APPLICATION CIRCUIT
S1T3361D
Mixer input
10.7MHz
51Ω
Audio
Mute
Scan
Control
Filter Filter Audio
Amp out Amp in output
Squelch
SW input
10kΩ
1.0uF 10nF
10nF
1.0uF
510kΩ
470kΩ
8.2kΩ
16 15 14 13 12 11 10
9
MIXIN GND MUTE SCAN SQ FOUT FIN AUDIO
S1T3361D
OSC
1
OSC MIXOUT VCC
234
LIMIN DECOLP LING QUAD
5678
68pF
10.24MHz 220pF
Vcc
455MHz
Filter
20kΩ
0.1uF 0.1uF
0.1uF
Quad coil
In the above application circuit, the audio signal is recovered using a conventional quadrature FM detector.
The absence of an input signal is indicated by the presence of noise above the desired audio frequencies. This
“noise band” is monitored by an active filter and a detector. A squelch trigger circuit indicates the presence of
noise (or a tone) by an output which can be used to control scanning. At the same time, an internal switch is
operated which can be used to mute the audio.
5
5 Page |
Páginas | Total 6 Páginas | |
PDF Descargar | [ Datasheet S1T3361D01.PDF ] |
Número de pieza | Descripción | Fabricantes |
S1T3361D01 | LOW VOLTAGE/POWER NARROW BAND FM IF | Samsung semiconductor |
S1T3361D01-D0B0 | LOW VOLTAGE/POWER NARROW BAND FM IF | Samsung semiconductor |
S1T3361D01-S0B0 | LOW VOLTAGE/POWER NARROW BAND FM IF | Samsung semiconductor |
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