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SL5162KG 数据表(PDF) 6 Page - Zarlink Semiconductor Inc

部件名 SL5162KG
功能描述  Multistandard VHF and UHF Television Demodulator
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制造商  ZARLINK [Zarlink Semiconductor Inc]
网页  http://www.zarlink.com
标志 ZARLINK - Zarlink Semiconductor Inc

SL5162KG 数据表(HTML) 6 Page - Zarlink Semiconductor Inc

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5
SL5162
open collector outputs is initially turned on. This is then
released when the mode selection (PAL/NTSC or SECAM) is
made or at any other convenient point (e.g. when frequency
data is sent) in PAL/NTSC mode. As an example, to synthesise
471·25MHz send the data words as shown in Table 4.
Care must be taken to ensure that the MSS pin is adequately
decoupled as close to the pin as possible. The routing of any
control line to this pin should also be layed out to ensure
maximum separation from the LO components whilst still
remaining as short as possible. In PAL/NTSC (mono)
applications, pin 13 (SUB 2) may be left open circuit or
decoupled to ground via a 1nF capacitor. In SECAM (mono)
applications pin 13 must be directly connected to VCC to
disable the intercarrier sound circuitry. For optimum
performance it is recommended that in single ended output
applications, pin15 is used for positive modulation, and pin 16
used for negative modulation.
Test Signal Generator (TSG)
A TSG is provided which may be enabled by connecting a
500kHz ceramic resonator via a 56pF capacitor to the TSG
pin (pin 18) as shown in Figure 4. The TSG is disabled by
connecting pin 18 to ground. The waveform that the TSG
produces (shown in Figure 3) will create two white bars on a
standard TV screen. It should be noted that standard (video)
modulation depth specification for the SL5162 in its normal
application does not apply to the TSG facility, since it is only
intended as a tuning or test mode.
AGC/White Clip
The SL5162 is provided with an AGC circuit which should
ensure correct modulation depth provided a composite video
signal between 0·5V and 1·5V sync tip to peak white is applied
to the VIDEO input, pin 19. If desired, the AGC may be
disabled and a white clip circuit switched in to prevent
overmodulation. This clipping level is set to a nominal 17%
above peak white level, thus ensuring that even with a
standard PAL I 95% saturated, 100% amplitude colour bars
test signal, no clipping should take place. The AGC is enabled
by connecting the pin 20 to Ground via a 150nF capacitor;
white clip is enabled by connecting a 1·6k
Ωresistor from pin
20 to ground.
C2
1D
74
CE
B0
CE
10
STOP
Address synthesiser
MSB frequency information
LSB frequency information
Charge pump high mode, standard operation
Turn on port 5 to switch sound tank on
Resend of byte 4
Turn on port 5, turn off port 4 (to configure SL5162
to PAL/NTSC operation)
Stop bit (if required)
Data
word
Description
Table 4
MSS pin voltage
0V
5V
FM
AM
Negative
Positive
Video
modulation
Audio
modulation
Table 3
R1
R2
R4
R5
R7
R8
R9
R10*
R11*
R12
R13
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
22k
22k
10k
22k
47k
1·6k
75
75
0
0
10k
18pF
100pF
100pF
220nF
47nF
10nF
-
5·6pF
100pF
10nF
Surface mount 1206
Surface mount 1206
Surface mount 1206
Surface mount 1206
Surface mount 1206
Surface mount 1206
Surface mount 1206
Surface mount 1206
Surface mount 0805
Surface mount 1206
Surface mount 1206
Surface mount 0805 100V COG
Surface mount 1206
Surface mount 1206
Surface mount 1206
Surface mount 1206
Surface mount 1206
BB515 varactor diode
Surface mount 0805
Surface mount 0805
Surface mount 1206
Circuit ref.
Value
Type
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
C25
C26
C27
C28
C29
C30
10nF
10nF
150pF
33nF
47
µF
150nF
680nF
56pF
10nF
10nF
100pF
1
µF
10nF
220nF
100pF
100pF
1·5pF
1·5pF
1·5pF
1·5pF
Surface mount 1206
Surface mount 1206
Surface mount 1206
Surface mount 1206
Electrolytic 0·1 inch pitch
Surface mount 1206 (X7R)
0·2 inch pitch leaded capacitor
Surface mount 1206
Surface mount 0805
Surface mount 0805
Surface mount 1206
Electrolytic 0·1 inch pitch
Surface mount 1206
Surface mount 1206
Surface mount 1206
Surface mount 1206
Surface mount 0603
Surface mount 0603
Surface mount 0603
Surface mount 0603
Circuit ref.
Value
Type
*Not fitted
Table 5 SL5162 demonstration board components parts list
contd…


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