參數(shù)資料
型號(hào): MCP4341-503E/ST
廠商: Microchip Technology
文件頁數(shù): 53/59頁
文件大小: 0K
描述: IC DGTL POT QUAD 50K 20TSSOP
標(biāo)準(zhǔn)包裝: 74
系列: WiperLock™
接片: 129
電阻(歐姆): 50k
電路數(shù): 4
溫度系數(shù): 標(biāo)準(zhǔn)值 150 ppm/°C
存儲(chǔ)器類型: 非易失
接口: 4 線 SPI(芯片選擇)
電源電壓: 2.7 V ~ 5.5 V
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 20-TSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 20-TSSOP
包裝: 管件
Micrel, Inc.
KSZ9021GQ
September 2010
57
M9999-091010-1.2
Reference Clock – Connection & Selection
A crystal or external clock source, such as an oscillator, is used to provide the reference clock for the KSZ9021GQ. The
reference clock is 25 MHz for all operating modes of the KSZ9021GQ.
The following figure and table shows the reference clock connection to XI (pin 124) and XO (pin 123) of the KSZ9021GQ,
and the reference clock selection criteria.
25MHz OSC
+/-50ppm
NC
XI
XO
XI
XO
22pF
25MHz XTAL
+/-50ppm
Figure 16. 25MHz Crystal / Oscillator Reference Clock Connection
Characteristics
Value
Units
Frequency
25
MHz
Frequency tolerance (max)
±50
ppm
Table 17. Reference Crystal/Clock Selection Criteria
Magnetics Specification
A 1:1 isolation transformer is required at the line interface. An isolation transformer with integrated common-mode chokes
is recommended for exceeding FCC requirements.
The following tables provide recommended magnetic characteristics and a list of qualified magnetics for the KSZ9021GQ.
Parameter
Value
Test Condition
Turns ratio
1 CT : 1 CT
Open-circuit inductance (min.)
350
μH
100mV, 100kHz, 8mA
Insertion loss (max.)
1.0dB
0MHz – 100MHz
HIPOT (min.)
1500Vrms
Table 18. Magnetics Selection Criteria
Magnetic Manufacturer
Part Number
Auto MDI-X
Number of Port
Pulse
H5007NL
Yes
1
TDK
TLA-7T101LF
Yes
1
Table 19. Qualified Single Port 10/100/1000 Magnetics
相關(guān)PDF資料
PDF描述
MCP4342-104E/ST IC DGTL POT QUAD 100K 14TSSOP
MCP4341-502E/ST IC DGTL POT QUAD 5K 20TSSOP
MCP4341-103E/ML IC DGTL POT QUAD 10K 20QFN
VE-BNK-MV CONVERTER MOD DC/DC 40V 150W
MCP4341-503E/ML IC DGTL POT QUAD 50K 20QFN
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCP4341T-103E/ML 功能描述:數(shù)字電位計(jì) IC 10k SPI 7-bit Quad Chl, QFN20 RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲(chǔ)器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel
MCP4341T-103E/ST 功能描述:數(shù)字電位計(jì) IC 10k SPI 7-bit Quad Chl, TSSOP20 RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲(chǔ)器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel
MCP4341T-104E/ML 功能描述:數(shù)字電位計(jì) IC 100k SPI 7-bit Quad Channel RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲(chǔ)器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel
MCP4341T-104E/ST 功能描述:數(shù)字電位計(jì) IC 100k SPI 7-bit Quad Channel RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲(chǔ)器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel
MCP4341T-502E/ML 功能描述:數(shù)字電位計(jì) IC 5k SPI 7-bit Quad Channel RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲(chǔ)器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel