參數(shù)資料
型號(hào)： PEF2445N
英文描述： ?Multipoint Switching and Conferencing Unit - Attenuation?
中文描述： ？多點(diǎn)交換和會(huì)議股-衰減？
文件頁(yè)數(shù)： 38/73頁(yè)
文件大?。?/td> 1618K
代理商： PEF2445N
PEB 2466
PEF 2466
Interface Description
Hardware Reference Manual
29
2001-02-20
5.1.2
Analog Interface Pins
Table 21
Analog Interface Pins
Symbol
V
IN1
V
IN2
V
IN3
V
IN4
V
OUT1
Pin
49
55
58
64
51
Function
Analog Input, Channel 1, 2
Requires a coupling capacitor >39 nF to the SLIC, see
Figure 16
.
Analog Input, Channel 3, 4
Requires a coupling capacitor >39 nF to the SLIC, see
Figure 16
.
Analog Output, Channel 1, 2
Requires a coupling capacitor to the SLIC. The capacitor
’
s value
depends on the input impedance of the SLIC, see
Figure 16
.
Analog Output, Channel 3, 4
Requires a coupling capacitor to the SLIC. The capacitor
’
s value
depends on the input impedance of the SLIC, see
Figure 16
.
V
OUT2
53
V
OUT3
60
V
OUT4
62
GNDA1
GNDA2
GNDA3
GNDA4
50
54
59
63
Analog Ground, Channel 1, 2
Not internally connected to GNDD or the other GNDAx.
Analog Ground, Channel 3, 4
Not internally connected to GNDD or the other GNDAx.
V
DDA12
52
Analog Supply Voltage, Channels 1+2
+5 V (100 nF blocking capacitor required, see
Figure 16
).
Analog Supply Voltage, Channels 3+ 4
+5 V (100 nF blocking capacitor required, see
Figure 16
).
Analog Supply Reference Voltage,
+5 V (100 nF blocking capacitor required, see
Figure 16
).
Reference Voltage
Must connect to a 220 nF cap. to ground, see
Figure 16
.
V
DDA34
61
V
DDREF
57
V
REF
56
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