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參數(shù)資料
| 型號： | HC5503C |
| 廠商： | Intersil Corporation |
| 英文描述： | Unbalanced PBX/ Key System SLIC,Subscriber Line Interface Circuit(用戶線接口電路) |
| 中文描述： | 不平衡交換機/關(guān)鍵系統(tǒng)的用戶接口，用戶線接口電路（用戶線接口電路） |
| 文件頁數(shù)： | 2/8頁 |
| 文件大?。?/td> | 114K |
| 代理商： | HC5503C |
4-2
Channel A’s LED, the Cross Point Switch and Transistors Q
1
and Q
2
). For SLIC supply currents consult the applicable
data sheet.
Setup
1. Connect the power supplies to the Evaluation board.
2. Set V
BAT
to -48V, V
CC
to +5V and Ground the V
EE
pin
(V
EE
supply not required for this test).
3. Set the DPDT switch (S1) to standard operation. This
connects the Transmit and Receive outputs to banana
jacks TX and RX.
4. Terminate tip and ring Channel A with a 600
load
(Channel B is disconnected during standard operation).
5. Measure the supply currents and compare to those in
Table 1.
Test #2 Normal Loop Feed Verification
This test verifies loop current operation and loop current
detection via the onboard LED.
Discussion
When power is applied to the SLIC a loop current will flow
from tip to ring through the 600
load. Loop current
detection occurs when this loop current triggers an internal
detector that pulls the output of SHD low, illuminating the
LED through the +5V supply.
Setup
1. Connect the power supplies to the Evaluation board.
2. Set V
BAT
to -48V, V
CC
to +5V and Ground the V
EE
pin
(V
EE
supply not required for this test).
3. Set the DPDT switch (S1) to standard operation. This
connects the Transmit and Receive outputs to banana
jacks TX and RX.
4. Terminate tip and ring Channel A with a 600
load
(Channel B is disconnected during standard operation).
Verification:
1. The SHD LED is on when tip and ring are terminated with
600
.
2. The SHD LED is off when tip and ring are an open circuit.
Test #3 Tip and Ring Voltage Verification
This test verifies the tip and ring voltages.
Setup
1. Connect the power supplies to the Evaluation board.
2. Set V
BAT
to -48V, V
CC
to +5V and Ground the V
EE
pin
(V
EE
supply not required for this test).
3. Set the DPDT switch (S1) to standard operation. This
connects the Transmit and Receive outputs to banana
jacks TX and RX.
4. Terminate tip and ring Channel A with a 600
load
(Channel B is disconnected during standard operation).
5. Measure tip and ring voltages with respect to ground and
compare to those in Table 2.
Test #4 Gain Verification (4-Wire to 2-Wire)
This test will verify the SLIC is operating properly and that
the 4-wire to 2-wire gain is 1.0 or 0.0dB.
Discussion
When terminated with 600
load, the SLIC will exhibit unity
gain from the RX input pin to across tip and ring (VTR).
When an open circuit exists, a mismatch occurs and the tip to
ring voltage doubles. The dB gain is calculated in Equation 1.
V
RX
Setup
1. Connect the power supplies to the Evaluation board.
2. Set V
BAT
to -48V, V
CC
to +5V and Ground the V
EE
pin
(V
EE
supply not required for this test).
3. Set the DPDT switch (S1) to standard operation. This
connects the Transmit and Receive outputs to banana
jacks TX and RX.
4. Terminate tip and ring Channel A with a 600
load
(Channel B is disconnected during standard operation).
5. Connect a sine wave generator, referenced to ground, to
the RX input.
6. Set the generator for 1V
RMS
at 1kHz.
7. Connect an AC voltmeter across tip and ring.
Verification
1. Tip to ring AC voltage of 1V
RMS
when terminated.
2. Tip to ring AC voltage of 2V
RMS
when not terminated.
Verifying Junctor Operation
The operation of the Junctor application circuit using the 2
HC5503X samples provided can be verified by performing 4
tests:
1. Channel to Channel Transhybrid Balance.
2. Inter-Channel Transhybrid Balance.
3. Channel to Channel Gain.
4. Intra-Channel Transhybrid Balance with different loads.
The above 4 tests require the following equipment: Two
600
loads, a sine wave generator, an AC volt meter and
three external supplies (V
BAT
, V
CC
,
V
EE
).
Definition of Junctor Circuit
The function of the Junctor application circuit is to convert a two
port network with a Transmit Output (TX) and a Receive Input
(RX) into a one-port network. The conversion to a one-port
network now makes it easy to connect phone lines in a small
PBX or Key System through a single Cross Point. This
TABLE 1.
HC5503C, HC5503J, HC5503T
RL (
)
SUPPLY
TYP (mA)
V
CC
= +5V
V
BAT
= -48V
600
10.9
600
33.5
TABLE 2.
BATTERY
TIP TYP (V)
RING TYP (V)
V
BAT
= -48V
-12.8
-30.6
dB
20
V
log
=
(EQ. 1)
Application Note 9813
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| HC5503CB | 制造商:Rochester Electronics LLC 功能描述: 制造商:Intersil Corporation 功能描述: |
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| HC5503CBZ | 功能描述:電信線路管理 IC LW COST ISDN SLIC 24S0 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| HC5503CBZ96 | 功能描述:電信線路管理 IC HC5503CBEL RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| HC5503CCB | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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