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参数资料
| 型号： | CH1817ET |
| 厂商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Family of Low Profile DAA Modules |
| 中文描述： | DAA的超薄系列模块 |
| 文件页数： | 5/7页 |
| 文件大小： | 443K |
| 代理商： | CH1817ET |
Cermetek Microelectronics, Inc.
CH1817 Family of Low Profile DAA Modules
Figure 3.
1. RJ-11 Jacks must be provided by one of the
vendors on the list. Refer to Application Note
#130, Summary of Recommended Suppliers.
2.
Current Line Device: F1 and F2 – 1.25amp.
A. UL 1459 must use a current limit device. A
Poly Fuse is recommended as this device
resets automatically after each power surge.
B. Resistors (10ohm carbon film or SMD 1/8W
minimum) may be used for non UL
applications.
3.
Over Voltage and Lightning Protection.
A. DOC (Canada) may require external current
limiting devices. Use 1ohm resistors (carbon
film or SMD parts 1/8W minimum) in each lead
(TIP and RING). You may substitute fuses or
the Poly Fuse described in Section 2.
B. For lightning prone areas where there are
more than 2 storms per year, provide an earth
ground connection and use a three terminal
sidactor or similar device that provides metallic
and longitudinal protection. This must also
include the current protection in Section 2.
4.
EMI/RFI Suppression.
The capacitor/ inductor network should be located
as close to the RJ-11 Jack as possible with an
excellent ground path to the chassis. Capacitors
C1 and C2 should not exceed 0.005
μ
F. They
must have a rating of 1.5KV and typically have a
value of 0.001
μ
F ± 20%. Inductors L1 and L2 are
ferrite cylinders and provide attenuation to high
frequencies from system level components
external to the CH1817. The required values must
be empirically determined for each product design
Telephone Line Interface.
Figure 4. Low Power Ring Detection.
2002 Cermetek Microelectronics, Inc.
Page 5
Document No. 607-0007 Revision B (01/02)
相关PDF资料 |
PDF描述 |
|---|---|
| CH1817L | Family of Low Profile DAA Modules |
| CH1817LM | Family of Low Profile DAA Modules |
| CH1817-D | Family of Low Profile DAA Modules |
| CH1817LET | Family of Low Profile DAA Modules |
| CH7009A | Chrontel CH7009 DVI / TV Output Device |
相关代理商/技术参数 |
参数描述 |
|---|---|
| CH1817-ET | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Data Access Arrangement (DAA) |
| CH1817L | 制造商:Cermetek Microelectronics 功能描述:Data Access Arrangement (DAA) Modules 9-Pin |
| CH1817-L | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Family of Low Profile DAA Modules |
| CH1817LET | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Family of Low Profile DAA Modules |
| CH1817LM | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Family of Low Profile DAA Modules |
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