參數資料
型號: STV0056A
廠商: 意法半導體
英文描述: Satellite Sound and Video Processor(衛(wèi)星探測和視頻處理器)
中文描述: 衛(wèi)星聲音和視頻處理器(衛(wèi)星探測和視頻處理器)
文件頁數: 14/26頁
文件大?。?/td> 247K
代理商: STV0056A
V
REF
2.4V
VID IN
6.5k
10k
85
μ
A
GND0V
1
0.5pF
+
0
Figure7
V
DD
9V
Audio
PK OUT R
PK OUT L
PeakDetector
5k
3.4V
Clamp
1
1
0
Figure8
FC L
FC R
1
1
V
DD
9V
Ivar
0
Figure9
Audio
2.4V Bias
20k
GND 0V
S2 OUT L
S2 OUT R
S3 OUT L
S3 OUT R
20k
0
Figure 11
50
μ
A
1
S2 RTN L
S2 RTNR
S3 RTN L
S3 RTNR
4.8V
25k
0
Figure 12
Audio
2.4V Bias
30k
GND 0V
30k
VOL OUT R
VOL OUT L
15k
4.8V
0
Figure10
50
μ
A
1
FM IN
2.4V
10k
50
μ
A
1
10k
Left Channel
Right Channel
0
Figure 13
1
2.4V
I
REF
0
Figure 14
PIN INTERNALCIRCUITRY
(continued)
VID IN
PK OUTR, PK OUT L
FC L, FC R
Ivar is controlled by the peak det audio level max.
±
15
μ
A (1V
PP
audio).
VOL OUT R, VOL OUT L
Audio output with volume and scart driver with
+12dB of gain for up to 2V
RMS
. The opamp has a
push-pulloutput stage.
S2 OUT L, S2 OUT R, S3 OUT L, S3 OUT R
Same as abovebut with gain fixed at +6dB.
S2 RTN L, S2 RTN R, S3 RTN L, S3 RTN R
4.8V bias voltageis the same as the bias level on
the audio outputs.
FM IN
Theotherinputforeachchannelisinternallybiased
in the sameway via 10k
to the 2.4VV
REF
.
I
REF
The optimum value if I
REF
is 50
μ
A
±
2% so an
externalresistor of 47.5k
±
1%is required.
STV0056A
14/26
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