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參數(shù)資料
| 型號(hào)： | AN6448NFBP |
| 廠商： | PANASONIC CORP |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | CAP 120PF 50V CERAMIC MONO 5% |
| 中文描述： | TELEPHONE SPEECH CKT, PQFP64 |
| 封裝： | 14 X 14 MM, PLASTIC, QFP-64 |
| 文件頁數(shù)： | 8/11頁 |
| 文件大?。?/td> | 156K |
| 代理商： | AN6448NFBP |
I
Pin Descriptions (cont.)
54
55
AUX
OUT
O
AUX
IN
DH IN
I
I
56
57IN
RF2
IN
PR
V
CC
V
reg
I
I
I
O
58
59
60
61
62 VLC
Internal supply voltage output :
A power supply derived from line
voltage is output from this pin to
the internal speech network.
Circuit voltage control (2) :
This pin is grounded through
C38.
2-5 VDC
depending on V
L
The gain of the AUX preamp.
is calculated the same way as
the rec. preamp.
The input impedance as illus-
trated left and C33, C34, or
C35 form a HPF.
The larger C36, the longer the
power-ON reset time.
The power-ON reset signal is out-
put when the supply voltage
reaches 4V.
C38 (typically 47
μ
F) deter-
mines how the circuit voltage
fluctuates.
RF2 link input :
RF1 signals are input through
a coupling capacitor C34 to
this pin.
Input impedance is 10k
.
Power-ON reset control :
C36 between this pin and GND
determines the power-ON reset
time of the logic circuits.
AUX link input :
AUX signals are input through a
coupling capacitor to this pin.
External supply voltage input :
5
±
0.5 V power supply is input to
this pin.
55
To LINK SW
54
V
REF
V
REF
V
REF
V
REF
10k
To LINK SW
56
V
REF
V
REF
57/58
10k
To LINK SW
V
REF
V
CC
Reset signal
50k
59
150k
+
Comparator
–
5V
±
0.5V
DC
V
CC
– 0.2V
2V during power failure
V
L
2
61
62
64
63
2
52OUT
O
53IN
I
The gain of the MIX preamp.
is calculated the same way as
the rec. preamp.
MIX preamp. output :
A C/R combination between Pin53
and this pin determines the gain and
f. characteristics of the MIX pre-
amp.
Output impedance is 50
±
30
.
MIX link input :
MIX signals are input through
a coupling capacitor to this pin.
AUX preamp. output :
A C/R combination between Pin55
and this pin determines the gain and
f. characteristics of the AUX pre-
amp.
Output impedance is 50
±
30
.
Intercom link input :
Intercom signals are input through
a coupling capacitor C33 to this
pin.
Input impedance is 10k
.
RF1 link input :
RF1 signals are input through
a coupling capacitor C34 to
this pin.
Input impedance is 10k
.
V
REF
53
To LINK SW
52
V
REF
51 GND
Ground :
Output impedance is 50
±
30
.
Description
Waveform
Remarks
PinNo.
Symbol
I/O
Equivalent Circuit
+
–
+
–
+
–
+
–
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