参数资料
| 型号： | AMIS-49200-XTP |
| 厂商： | ON Semiconductor |
| 文件页数： | 6/22页 |
| 文件大小： | 0K |
| 描述： | IC TXRX FIELDBUS MAU 44LQFP |
| 标准包装： | 1,500 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 1/1 |
| 规程： | MDS-MAU |
| 电源电压： | 4.75 V ~ 6.2 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-LQFP |
| 供应商设备封装： | 44-LQFP（10x10） |
| 包装： | 带卷 (TR) |
AMIS-492x0
4.3 Transmit Block
The transmit block contains four sub-blocks:
1.
MDS-interface – decodes input signals to generate internal control signals.
2.
Tri-level modulator – generates current signals used as inputs to the slew-rate controller.
3.
Slew rate controller – converts current to three distinct VDRV voltage levels (VS, VH, VL).
4.
Current drive amplifier – op amp designed to drive current drivers for 31.25kbps voltage-mode medium.
4.3.1. MDS-interface
The MDS-interface decodes input signals to generate internal control signals. The POL pin is used to select the polarity of TxE (transmit
enable). The TxE and TxS (transmit signal) are the MDS-MAU interface signals. These three signals are CMOS logic signals powered
by the VDD supply voltage. When POL is connected to GND, TxE is assumed to be active high (positive logic). Likewise, if POL is
connected to VDD, TxE is assumed to be active low (negative logic).
See Table 1 on page 7, Table 11, and Figure 8 to see how
MDS_CTRL Pin 26 can be used to control MDS interface operation.
Table 11 shows the resulting VDRV output for the various
combinations of interface signals.
Table 11: MDS-interface Logic
POL
TxE
TxS
VDRV
Low
High
VS
Low
VH
Low
High
VL
Low
VH
Low
High
VL
Low
High
VS
Figure 8: MDS Interface
4.3.2. Tri-level Modulator
The tri-level modulator switches current signals into a summing node. The slew rate controller converts the current to a voltage signal,
VDRV. The DC level of silence (VS) is nominally 2.5V. Transmission high (VH ) is nominally 2.9V and transmission low (VL) is nominally
2.1V, yielding an amplitude of 0.8V.
Rev. 6 | Page 14 of 22 | www.onsemi.com
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| AMIS-49250-XTD | 功能描述:总线收发器 Field Bus MAU Transceiver RoHS:否 制造商:Fairchild Semiconductor 逻辑类型:CMOS 逻辑系列:74VCX 每芯片的通道数量:16 输入电平:CMOS 输出电平:CMOS 输出类型:3-State 高电平输出电流:- 24 mA 低电平输出电流:24 mA 传播延迟时间:6.2 ns 电源电压-最大:2.7 V, 3.6 V 电源电压-最小:1.65 V, 2.3 V 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-48 封装:Reel |
| AMIS-49250-XTP | 功能描述:总线收发器 AMIS-49250 FIELDBUS MAU T RoHS:否 制造商:Fairchild Semiconductor 逻辑类型:CMOS 逻辑系列:74VCX 每芯片的通道数量:16 输入电平:CMOS 输出电平:CMOS 输出类型:3-State 高电平输出电流:- 24 mA 低电平输出电流:24 mA 传播延迟时间:6.2 ns 电源电压-最大:2.7 V, 3.6 V 电源电压-最小:1.65 V, 2.3 V 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-48 封装:Reel |
| AMIS-492X0 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Fieldbus MAU |
| AMIS492X0GEVB | 制造商:ON Semiconductor 功能描述:FIELDBUS EVAL BOARD - Bulk |
| AMIS-49587 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Power Line Carrier Modem |
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