参数资料
型号: 73M2901CE-EVM-WW
厂商: Maxim Integrated Products
文件页数: 29/30页
文件大小: 0K
描述: BOARD DEMO 73M2901CE WORLDWIDE
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
系列: *

UM_2901CE_026
73M2901CE Demo Board User Manual
5 DC Loop Circuit Schematic
The following circuit can be used to connect two modems for back-to-back testing. Most modems require
DC loop current is present for the DAA to operate correctly. Generally they cannot be connected together
directly without some provision for providing this current. The following circuit can be used for this
purpose. This circuit also provides a termination impedance that is close to the 600 Ohms used in the
U.S.and many other countries.
+12V
+12V
R6
10 OHM
Q4
2N2905
R4
10 OHM
Q3
2N2905
R1
10 OHM
Q1
2N2905
R3
10 OHM
Q2
2N2905
J2
R5
690 OHM
R2
690 OHM
J1
1
2
3
4
RJ-11
C2
22UF 50 V
C1
22UF 50 V
1
2
3
4
RJ-11
Figure 13: Simple DC Loop Simulator
6 Related Documentation
The following 73M2901CE documents are available from Teridian Semiconductor Corporation:
73M2901CE Data Sheet
73M2901CE AT Command User Guide
7 Contact Information
For more information about Teridian Semiconductor products or to check the availability of the
73M2901CE, contact us at:
6440 Oak Canyon Road
Suite 100
Irvine, CA 92618-5201
Telephone: (714) 508-8800
FAX: (714) 508-8878
Email: modem.support@teridian.com
For a complete list of worldwide sales offices, go to http://www.teridian.com.
Rev. 1.5
29
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73M2901CE-IGV/F 功能描述:电信线路管理 IC V.22bis Single-Chip Modem 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
73M2901CE-IGVR/F 功能描述:电信线路管理 IC V.22bis Single-Chip Modem 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
73M2901CE-IM/F 功能描述:电信线路管理 IC V.22bis Single-Chip Modem 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
73M2901CE-IM/F1 功能描述:电信线路管理 IC 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
73M2901CE-IMR/F 功能描述:电信线路管理 IC V.22bis Single-Chip Modem 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