参数资料
型号: KS8993-EVAL
厂商: Micrel Inc
文件页数: 28/35页
文件大小: 0K
描述: BOARD EVAL EXPERIMENT FOR KS8993
标准包装: 1
相关产品: KS8993I-ND - IC SWITCH 10/100 3PORT 128PQFP
KS8993-ND - IC SWITCH 10/100 3PORT 128PQFP
其它名称: 576-1011
KS8993
Micrel
KS8993
34
May 2005
Selection of Isolation Transformer(Note 1)
One simple 1:1 isolation transformer is needed at the line interface. An isolation transformer with integrated common-mode
choke is recommended for exceeding FCC requirements. The following table gives recommended transformer characteristics.
Characteristics Name
Value
Test Condition
Turns Ratio
1 CT : 1 CT
Open-Circuit Inductance (min.)
350
H
100mV, 100 KHz, 8mA
Leakage Inductance (max.)
0.4
H
1MHz (min.)
Inter-Winding Capacitance (max.)
12pF
D.C. Resistance (max.)
0.9
Insertion Loss (max.)
1.0dB
0MHz to 65MHz
HIPOT (min.)
1500Vrms
Note 1.
The IEEE 802.3u standard for 100BaseTX assumes a transformer loss of 0.5 dB. For the transmit line transformer, insertion loss of up to
1.3dB can be compensated by increasing the line drive current by means of reducing the ISET resistor value.
Selection of Reference Crystal
An oscillator or crystal with the following typical characteristics is recommended.
Characteristics Name
Value
Units
Frequency
25.00000
MHz
Frequency Tolerance (max.)
±100
ppm
The following transformer vendors provide pin-to-pin compatible parts for Micrel’s device:
Type
Quad
Single
Vendor
Part
Vendor
Part
Transformer only
Pulse
H1060
Pulse
H1012
YCL
PH406080
YCL
20PMT04
Trans-Power
HB826-10
Trans-Power
HB614-1-LP
Integrated RJ45 and Transformer
Trans-Power
RJG4-754-C-NL
Trans-Power
RJ754-C-NL
Table 12. Qualified Transformer Lists
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参数描述
KS8993F 功能描述:IC CONV MED 10/100 3PORT 128PQFP RoHS:是 类别:集成电路 (IC) >> 专用 IC 系列:* 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 类型:调帧器 应用:数据传输 安装类型:表面贴装 封装/外壳:400-BBGA 供应商设备封装:400-PBGA(27x27) 包装:散装
KS8993F-A1 功能描述:IC CONV MED 10/100 3PORT 128PQFP RoHS:否 类别:集成电路 (IC) >> 专用 IC 系列:* 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 类型:调帧器 应用:数据传输 安装类型:表面贴装 封装/外壳:400-BBGA 供应商设备封装:400-PBGA(27x27) 包装:散装
KS8993FA5 功能描述:IC SWITCH 3-PORT 10/100 128-PQFP RoHS:否 类别:集成电路 (IC) >> 专用 IC 系列:* 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 类型:调帧器 应用:数据传输 安装类型:表面贴装 封装/外壳:400-BBGA 供应商设备封装:400-PBGA(27x27) 包装:散装
KS8993F-EVAL 功能描述:EVAL KIT EXPERIMENTAL KS8993F RoHS:否 类别:编程器,开发系统 >> 评估演示板和套件 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- 主要目的:电源管理,电池充电器 嵌入式:否 已用 IC / 零件:MAX8903A 主要属性:1 芯锂离子电池 次要属性:状态 LED 已供物品:板
KS8993FL 功能描述:IC CONV MED 10/100 SGL 128PQFP RoHS:否 类别:集成电路 (IC) >> 专用 IC 系列:* 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 类型:调帧器 应用:数据传输 安装类型:表面贴装 封装/外壳:400-BBGA 供应商设备封装:400-PBGA(27x27) 包装:散装