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參數(shù)資料
| 型號(hào)： | HC-5502B1 |
| 廠商： | Intersil Corporation |
| 英文描述： | SLIC Subscriber Line Interface Circuit |
| 中文描述： | 用戶接口用戶線接口電路 |
| 文件頁(yè)數(shù)： | 6/12頁(yè) |
| 文件大?。?/td> | 132K |
| 代理商： | HC-5502B1 |
4-6
Functional Diagram
26
22
C
4
Capacitor #4 - An external capacitor to be connected between this terminal and analog ground. This ca-
pacitor prevents false ground key indication and false ring trip detection from occurring when longitudinal
currents are induced onto the subscriber loop from nearby power lines and other noise sources. This ca-
pacitor is also required for the proper operation of ring trip detection. Typical value is 0.5
μ
F to 1.0
μ
F, 20V.
This capacitor should be nonpolarized.
27
23
AG
Analog Ground - To be connected to zero potential and serves as a reference for the transmit output (TX)
and receive input (RX) terminals.
28
24
TX
Transmit Output, Four Wire Side - A low impedance analog output which represents the differential volt-
age across Tip and Ring. Transhybrid balancing must be performed (using the SLIC microcircuit’s spare
op amp) beyond this output to completely implement two to four wire conversion. This output is unbal-
anced and referenced to analog ground. Since the DC level of this output varies with loop current, capac-
itive coupling to the next stage is essential.
1, 8, 5, 22
NC
No Internal Connection.
NOTE:
5. All grounds (AG, BG, and DG) must be applied before V
B
+ or V
B
-. Failure to do so may result in premature failure of the part. If a user wishes
to run separate grounds off a line card, the AG must be applied first.
Pin Descriptions
(Continued)
28 PIN
PLCC
24 PIN
DIP/SOIC
SYMBOL
DESCRIPTION
RING
RELAY
LOOP
CURRENT
LIMITER
BATTERY
FEED
+
DIFF
AMP
+
OP
AMP
LOOP
MONITORING
RING
CONTROL
2-WIRE
LOOP
SECONDARY
PROTECTION
+1
-1
LINE
DRIVERS
TIP
RING
V
B
-
V
B
-
PD
POWER DENIAL
150
RING
150
RF
BG
150
TF
TIP
RD
RC
RS
RING
VOLTAGE
RING SYNC
RING COMMAND
RING
TRIP
SHD
GKD
TX
TRANSMIT
OUTPUT
OUT
+IN
-IN
RX
RECEIVE
INPUT
SLIC MICROCIRCUIT
150
SWITCH HOOK
DETECTION
GROUND KEY
DETECTION
HC-5502B1
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相關(guān)代理商/技術(shù)參數(shù) |
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| HC5502B3 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication IC |
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