參數(shù)資料
型號： 73M1822-IMR/F
廠商： Maxim Integrated Products
文件頁數(shù)： 60/82頁
文件大?。?/td> 0K
描述： MICRODAA VOICE DATA/FAX 42-QFN
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 2,500
系列： MicroDAA™
應(yīng)用： 傳真，調(diào)制解調(diào)器，尋呼機(jī)
接口： 串行
電源電壓： *
封裝/外殼： 42-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 42-QFN（8x8）
包裝： 帶卷 (TR)
安裝類型： 表面貼裝
DS_1x22_017
73M1822/73M1922 Data Sheet
Rev. 1.6
63
An example of the use of the Seize state is that of Australia in which requires this stat for the first 300 ms
immediately after going off hook.
0
2
4
6
8
10
12
14
0
10
20
30
40
50
60
70
80
90
100
T
ip/R
ing
V
olt
a
ge
DC current, mA
DCVI Performance
DCIV=xx
Australian Not Recommended Region
Australian
Prohibited Region
Figure 33: Voltage versus Current in the Seize Mode is the Same for All DCIV Settings
To facilitate the quick capture of the loop, the bandwidth of the DC loop is high upon power up. On the
completion of DC loop capture, it should be lowered to avoid the interaction of DC and AC loops. See the
description of the ENNOM bit in Section 11.6.
11.2.1 Current Limit Detection
If the DAA Current Limiting feature is enabled and the device detects a limited condition, then a status bit is
set to give an indication of this event.
11.3 AC Termination
International DAA functionality is supported without any external termination components through the
following functions:
Enable/Disable AC termination ATEN bit at Register 0x16[4].
Select AC termination impedance using the ACZ bits at Register 0x17[4:3]
ACZ Active Termination Loop Setting
00 = 600
(USA, Japan)
01 = 270
+ 750 || 150nF (ETSI ES 203 021-2)
10 = 200
+ 680 || 100nF (China)
11 = 220
+ 820 || 115nF (Australia)
The AC impedance presented to the line can be altered as described in the AC Termination Register
(Register 0x17). This is a part of a feedback loop that monitors the line and feeds an appropriate AC
current back to line, such that the desired impedance looking into the RXP pin (of the 73M1912 LIC) is
realized. Figure 34 shows magnitude response of the impedance matching filter for the case of ETSI ES
203 021-2. It is approximately equal to the inverse of the frequency characteristics of the impedance being
realized.
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參數(shù)描述
73M1822-KEYCHN 功能描述:網(wǎng)絡(luò)開發(fā)工具 Keychain Eval Module RoHS:否 制造商:Rabbit Semiconductor 產(chǎn)品:Development Kits 類型:Ethernet to Wi-Fi Bridges 工具用于評估:RCM6600W 數(shù)據(jù)速率:20 Mbps, 40 Mbps 接口類型:802.11 b/g, Ethernet 工作電源電壓:3.3 V
73M1866B-IFX 功能描述:電信線路管理 IC MicroDAA w/PCM Highway 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
73M1866B-IM/F 功能描述:電信線路管理 IC MicroDAA w/PCM Highway 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
73M1866B-IMR/F 功能描述:電信線路管理 IC MicroDAA w/PCM Highway 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
73M1866B-KEYCHN 功能描述:網(wǎng)絡(luò)開發(fā)工具 73M1866B Keychain Brd RoHS:否 制造商:Rabbit Semiconductor 產(chǎn)品:Development Kits 類型:Ethernet to Wi-Fi Bridges 工具用于評估:RCM6600W 數(shù)據(jù)速率:20 Mbps, 40 Mbps 接口類型:802.11 b/g, Ethernet 工作電源電壓:3.3 V
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