参数资料
| 型号： | DS32512N# |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 55/130页 |
| 文件大小： | 0K |
| 描述： | IC LIU DS3/E3/STS-1 484-BGA |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 类型： | 线路接口装置（LIU） |
| 规程： | DS3 |
| 电源电压： | 3.135 V ~ 3.465 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 484-BGA |
| 供应商设备封装： | 484-BGA（23x23） |
| 包装： | 管件 |
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DS32506/DS32508/DS32512
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8.3 Receiver
8.3.1 Interfacing to the Line
The receiver can be transformer-coupled or capacitor-coupled to the line. Typically, the receiver interfaces to the
incoming coaxial cable (75
Ω) through a 1:1 isolation transformer. The receive line termination can be internal to the
device, external to the device, or a combination of both. Figure 4-1 shows the arrangement of the transformer when
the internal termination is enabled (LIU.CR2:RTRE = 1) and no external termination resistors are used. Figure 4-2
shows the arrangement of the transformer and external termination resistors when the internal termination is
disabled (LIU.CR2:RTRE = 0). The internal termination resistor value is specified in LIU.CR2:RRESADJ[3:0]. Table
8-7 and Table 8-8 specify the required characteristics of the transformer and provide a list of recommended
transformers. The receiver expects the incoming signal to be in B3ZS- or HDB3-coded AMI format.
Table 8-7. Transformer Characteristics
PARAMETER
VALUE
Turns Ratio
1:1
±2%
Bandwidth 75
Ω
0.200MHz to 340MHz (typ)
Primary Inductance
40
μH (min)
Leakage Inductance
0.12
μH (max)
Interwinding Capacitance
10pF (max)
Isolation Voltage
1500VRMS (min)
Table 8-8. Recommended Transformers
MANUFACTURER
PART
TEMP RANGE
PIN-
PACKAGE/
SCHEMATIC
OCL
PRIMARY
(
μH) (min)
LL
(
μH)
(max)
BANDWIDTH
75
Ω (MHz)
Pulse Engineering
PE-65967
0°C to +70°C
6 SMT LS-1/E
40
0.10
1500
Pulse Engineering
PE-65966
0°C to +70°C
6 THT LC-1/E
40
0.10
1500
Pulse Engineering
T3001
-40°C to +85°C
6 SMT LS-2/E
40
0.11
1500
Pulse Engineering
TX3025
-40°C to +85°C
16 SMT BH/3
100
0.120
1500
Pulse Engineering
TX3036
-40°C to +85°C
24 SMT
100
0.110
1500
Pulse Engineering
TX3047
-40°C to +85°C
32 SMT YB/1
100
0.150
1500
Pulse Engineering
TX3051
-40°C to +85°C
48 SMT
60
0.120
1500
Halo Electronics
TG01-0406NS
0°C to +70°C
6 SMT SMD/A
40
0.10
1500
Halo Electronics
TD01-0406NS
0°C to +70°C
6 DIP DIP/A
40
0.10
1500
Halo Electronics
TG01-0456NS -40°C to +85°C
6 SMT SMD/A
45
0.12
1500
Halo Electronics
TD01-0456NE -40°C to +85°C
6 DIP DIP/A
45
0.12
1500
Note:
Table subject to change. Multiport transformers are also available. Contact the manufacturers for details at www.pulseeng.com and
8.3.2 Optional Preamp
The receiver can be used in monitoring applications that typically have series resistors with a resistive loss of
approximately 20dB. When the RMON pin is high or the LIU.CR2:RMON configuration bit is set, the receiver can
compensate for this resistive loss by applying 14dB of additional flat gain to the incoming signal before sending the
signal to the AGC/equalizer block (an additional 6dB of flat gain is applied in the AGC circuitry for a total gain of
20dB). When the preamp is enabled the receiver automatically determines whether or not to make use of the
preamp’s additional gain. Status bit LIU.SR:RPAS indicates whether or not the preamp is in use. A change of state
8.3.3 Automatic Gain Control (AGC) and Adaptive Equalizer
The AGC circuitry applies flat (frequency independent) gain to the incoming signal to compensate for flat losses in
the transmission channel and variations in transmission power. Since the incoming signal also experiences
frequency-dependent losses as it passes through the coaxial cable, the adaptive equalizer circuitry applies
frequency-dependent gain to offset line losses and restore the signal. The AGC/equalizer circuitry automatically
adapts to coaxial cable losses from 0 to 22dB, which translates into 0 to 457 meters (1500 feet) of coaxial cable
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS32512N# | 功能描述:网络控制器与处理器 IC 12-Port DS3/E3/STS-1 Line Interface Unit RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS32512N+ | 功能描述:网络控制器与处理器 IC 12-Port DS3/E3/STS-1 Line Interface Unit RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS32512NA2 | 制造商:Maxim Integrated Products 功能描述:DS32512 X12 DS3/E3 LIU REVA2 IND - Rail/Tube |
| DS32512NW | 功能描述:网络控制器与处理器 IC RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS32512W | 功能描述:网络控制器与处理器 IC RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
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