参数资料
型号: KSZ8863FLLI
厂商: Micrel Inc
文件页数: 60/106页
文件大小: 0K
描述: IC ETHERNET SWITCH 3PORT 48-LQFP
标准包装: 250
控制器类型: 以太网开关控制器
接口: MII
电源电压: 1.8V,2.5V,3.3V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 48-LQFP
供应商设备封装: 48-LQFP(7x7)
包装: 托盘
配用: 576-3866-ND - BOARD EVALUATION FOR KSZ8863FLL
其它名称: 576-3750
PIC16C72 Series
DS39016A-page 56
Preliminary
1998 Microchip Technology Inc.
9.1
A/D Acquisition Requirements
For the A/D converter to meet its specied accuracy,
the charge holding capacitor (CHOLD) must be allowed
to fully charge to the input channel voltage level. The
analog input model is shown in Figure 9-4. The source
impedance (RS) and the internal sampling switch (RSS)
impedance directly affect the time required to charge
the capacitor CHOLD. The sampling switch (RSS)
impedance varies over the device voltage (VDD). The
source impedance affects the offset voltage at the ana-
log input (due to pin leakage current). The maximum
recommended impedance for analog sources is 10
k
. After the analog input channel is selected
(changed) this acquisition must be done before the
conversion can be started.
To calculate the minimum acquisition time, TACQ, see
the PICmicro Mid-Range MCU Reference Manual,
DS33023. This equation calculates the acquisition time
to within 1/2 LSb error (512 steps for the A/D). The 1/2
LSb error is the maximum error allowed for the A/D to
meet its specied accuracy.
FIGURE 9-4:
ANALOG INPUT MODEL
CPIN
VA
Rs
ANx
5 pF
VDD
VT = 0.6V
I leakage
RIC
≤ 1k
Sampling
Switch
SS
RSS
CHOLD
= DAC capacitance
VSS
6V
Sampling Switch
5V
4V
3V
2V
5 6 7 8 9 10 11
( k
)
VDD
= 51.2 pF
± 500 nA
Legend CPIN
VT
I leakage
RIC
SS
CHOLD
= input capacitance
= threshold voltage
= leakage current at the pin due to
= interconnect resistance
= sampling switch
= sample/hold capacitance (from DAC)
various junctions
相关PDF资料
PDF描述
PIC16C505-04E/SL IC MCU OTP 1KX12 14SOIC
PIC16F676T-E/ST IC MCU FLASH 1KX14 W/AD 14TSSOP
PIC12LC509A-04I/MF IC MCU OTP 1KX12 LV 8DFN
PIC12LCE519-04/SM IC MCU OTP 1KX12 LV W/EE 8-SOIJ
PIC12CE518T-04I/SM IC MCU OTP 512X12 W/EE 8-SOIC
相关代理商/技术参数
参数描述
KSZ8863MLL 功能描述:以太网 IC 3-Port Copper 10/100 Ethernet Switch with 1x MII Interface (Lead Free) RoHS:否 制造商:Micrel 产品:Ethernet Switches 收发器数量:2 数据速率:10 Mb/s, 100 Mb/s 电源电压-最大:1.25 V, 3.45 V 电源电压-最小:1.15 V, 3.15 V 最大工作温度:+ 85 C 封装 / 箱体:QFN-64 封装:Tray
KSZ8863MLL-EVAL 功能描述:以太网开发工具 3-Port Copper 10/100 Ethernet Switch with 1x MII Interface - Evaluation Board RoHS:否 制造商:Micrel 产品:Evaluation Boards 类型:Ethernet Transceivers 工具用于评估:KSZ8873RLL 接口类型:RMII 工作电源电压:
KSZ8863MLLI 功能描述:以太网 IC 3-Port Copper 10/100 Ethernet Switch w/ 1x MII Interface (Industrial Grade) RoHS:否 制造商:Micrel 产品:Ethernet Switches 收发器数量:2 数据速率:10 Mb/s, 100 Mb/s 电源电压-最大:1.25 V, 3.45 V 电源电压-最小:1.15 V, 3.15 V 最大工作温度:+ 85 C 封装 / 箱体:QFN-64 封装:Tray
KSZ8863RLL 功能描述:以太网 IC 3-Port Copper 10/100 Ethernet Switch with 1x RMII Interface (Lead Free) RoHS:否 制造商:Micrel 产品:Ethernet Switches 收发器数量:2 数据速率:10 Mb/s, 100 Mb/s 电源电压-最大:1.25 V, 3.45 V 电源电压-最小:1.15 V, 3.15 V 最大工作温度:+ 85 C 封装 / 箱体:QFN-64 封装:Tray
KSZ8863RLL-EVAL 功能描述:以太网开发工具 3-Port Copper 10/100 Ethernet Switch with 1x RMII Interface - Evaluation Board RoHS:否 制造商:Micrel 产品:Evaluation Boards 类型:Ethernet Transceivers 工具用于评估:KSZ8873RLL 接口类型:RMII 工作电源电压: