參數(shù)資料
型號(hào): STV0056AF
廠商: 意法半導(dǎo)體
英文描述: Satellite Sound and Video Processor(衛(wèi)星探測(cè)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(cè)和視頻處理器)
文件頁(yè)數(shù): 15/27頁(yè)
文件大?。?/td> 224K
代理商: STV0056AF
Audio
Pins 51 - 52
PK OUTR
PK OUT L
Peak Detector
5k
3.4V
Clamp
1
1
V
DD
9V
0
Figure 8
Pin 55 - 57
FC L - FC R
1
1
V
DD
9V
Ivar
0
Figure 9
Audio
2.4V Bias
2
GND 0V
Pins 5 - 7 - 23 - 24
S2 OUT L
S2 OUT R
S3 OUT L
S3 OUT R
20k
0
Figure 11
50
μ
A
Pins 17 - 18 - 20 - 21
S2 RTN L - S2 RTN R
S3 RTN L - S3 RTN R
4.8V
25k
0
Figure 12
Audio
2.4VBias
30k
GND 0V
30k
Pins 62 - 3
VOL OUTR
VOL OUTL
15k
4.8V
0
Figure 10
50
μ
A
FM IN
2.4V
10k
10k
Left Channel
Right Channel
19
50
μ
A
0
Figure 13
1
2.4V
I
REF
50
0
Figure 14
PK OUT R, PKOUT L
FC L, FC R
Ivar is controlled by the peak det audio level max.
±
15
μ
A (1V
PP
audio).
VOL OUT R, VOLOUT 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 voltage is the same as the biaslevel on
the audio outputs.
FM IN
Theotherinputforeachchannelis internallybiased
in the same way via 10k
to the 2.4V V
REF
.
I
REF
The optimum value if I
REF
is 50
μ
A
±
2% so an
external resistorof 47.5k
±
1% is required.
180
μ
/2
μ
MUX
22kHz
100
μ
/2
μ
I/O/22kHz
25
10
μ
/2
μ
IIC Reg
91
μ
/2
μ
205
ESD
0
Figure 15
I/O / 22kHz
The input is TTL compatible.
The output is tri-stateable.
PIN INTERNAL CIRCUITRY
(continued)
SCL
Thisis theinput to a Schmittinputbuffer madewith
a CMOSamplifier.
Figure 16
SCL
24
μ
/4
μ
205
ESD
26
0
STV0056AF
15/27
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