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HC5518XEVAL Evaluation Board User’s Guide
TM
Application Note
September 2000
AN9814.2
Introduction
The HC5518XEVAL evaluation
board provides a complete
evaluation system for the HC55185
family of ringing SLICs. The
evaluation board design consists of the HC55185 device
application circuit, a single +5V CODEC for line circuit
evaluations and on board logic for stand alone operation. The
evaluation boards have been designed to support back to
back operation, providing further insight to the complete signal
path and solution.
The transient behavior of the SLIC in response to mode
changes has been signi?cantly improved with the HC55185
design. The bene?t to the application is reduction or more
likely elimination of DET glitches when off hook events
occur. In addition to internal circuit modi?cations, the change
of the C FB value contributes to this functional improvement.
Please reference the HC55185 data sheet for detailed
information regarding this feature.
Getting Started
Your evaluation kit should contain this user’s guide and the
following hardware.
1. One HC5518XEVAL evaluation board.
2. At least one HC55185 device sample, already in board.
3. One PLCC extraction tool.
4. One cable assembly with multi colored conductors.
5. One cable assembly with solid white conductors.
The evaluation board should have the same appearance as
the silk screen shown in Figure 1.
Applying Power to the Evaluation Board
Here are a few safeguards with power sequencing until you
are accustomed to using the high voltages required by the
devices.
1. Limit the current on all power supplies to 100mA.
2. Turn on the power supplies after the power cables are
attached to the evaluation boards.
Voltage ratings for external components have been selected
based on 100V device operation, therefore compatibility to
lower voltage versions is guaranteed.
FIGURE 1. EVALUATION BOARD SILK SCREEN
4-1
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Intersil and Design is a trademark of Intersil Corporation. | Copyright ? Intersil Corporation 2000
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HC55185FCM 制造商:Rochester Electronics LLC 功能描述:75V RINGING SLIC WITH 53DB BAL FOR FXS - Bulk
HC55185FCMZ 功能描述:电信线路管理 IC 75V RINGING SLIC W/53DB BAL FOR FXS RoHS:否 制造商:STMicroelectronics 产品:PHY 接口类型:UART 电源电压-最大:18 V 电源电压-最小:8 V 电源电流:30 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VFQFPN-48 封装:Tray
HC55185FCMZ96 功能描述:电信线路管理 IC 75V RINGING SLIC W/53DB BAL FOR FXS RoHS:否 制造商:STMicroelectronics 产品:PHY 接口类型:UART 电源电压-最大:18 V 电源电压-最小:8 V 电源电流:30 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VFQFPN-48 封装:Tray
HC55185FCR 制造商:Rochester Electronics LLC 功能描述:- Bulk
HC55185FCRZ 功能描述:电信线路管理 IC SAME AS HC55185FCM EXCEPT MLF PKG RoHS:否 制造商:STMicroelectronics 产品:PHY 接口类型:UART 电源电压-最大:18 V 电源电压-最小:8 V 电源电流:30 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VFQFPN-48 封装:Tray
HC55185FCRZ96 功能描述:电信线路管理 IC 32LD MFLP 75V W/53DB VAL FOR FXS RoHS:否 制造商:STMicroelectronics 产品:PHY 接口类型:UART 电源电压-最大:18 V 电源电压-最小:8 V 电源电流:30 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VFQFPN-48 封装:Tray
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HC55185GCMZ 功能描述:电信线路管理 IC 100V DB RINGING W/GROUND START STATE RoHS:否 制造商:STMicroelectronics 产品:PHY 接口类型:UART 电源电压-最大:18 V 电源电压-最小:8 V 电源电流:30 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VFQFPN-48 封装:Tray