参数资料
| 型号： | AMIS-49250-XTP |
| 厂商： | ON Semiconductor |
| 文件页数： | 11/22页 |
| 文件大小： | 0K |
| 描述： | IC TXRX FIELDBUS MAU 44NQFP |
| 标准包装： | 2,500 |
| 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-VFQFN 裸露焊盘 |
| 供应商设备封装： | 44-NQFP（7x7） |
| 包装： | 带卷 (TR) |
AMIS-492x0
5.3 External Circuitry
Figure 13 shows the external circuitry required to connect the AMIS-492x0 to an IEC 61158-2 conformant network. This schematic is
the circuit that was used to pass the FOUNDATION Fieldbus Physical Layer Conformance test as specified in FOUNDATION Fieldbus
specification FF830, Rev 1.5. This circuit is similar but not identical to the circuit recommended by Yokogawa for the
μSAA22Q.
Figure 13: AMIS-492x0 Reference Circuit Implementation
Table 13 lists the four external component values that need to be changed with using the AMIS-492x0 in a circuit that previously used
the
μSAA22Q.
Table 13: Passive External Component Value Differences Between the SAA22Q and the AMIS-492x0
Component
μSAA22Q Value
AMIS-492x0 Value
C1
100pf
150pf
C3
100pf
47pf
C4
470pf
220pf
C8
10nf
1
μf
C1 connects to signal CCD (Pin 32) and controls the carrier detect assert and drop-out timing. Particular implementations may require
that the value of C1 be changed to accommodate received signal level changes introduced by the addition of intrinsic safety
components added to the external circuitry. C3 and C4 are part of the receive filter and determine the band pass characteristics of the
receive filter. It is unlikely that these would need to be changed. C8 is a noise filter for VMID. It is important that VMID have as little
noise as possible as it is used as a reference for many sub-circuits in the AMIS-492x0. C8 must be a large capacitor with maximum of
100nf. C8 recommended value is 1
μf.
Rev. 6 | Page 19 of 22 | www.onsemi.com
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相关代理商/技术参数 |
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|---|---|
| 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 |
| AMIS-49587_P2 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Power Line Carrier Modem |
| AMIS49587C5871G | 功能描述:电信线路管理 IC C587- NAF- AMIS49587 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 |
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