參數(shù)資料
型號： MCP4441-502E/ML
廠商： Microchip Technology
文件頁數(shù)： 95/100頁
文件大?。?/td> 0K
描述： IC DGTL POT 129TAPS QUAD 20QFN
標準包裝： 91
接片： 129
電阻（歐姆）： 5k
電路數(shù)： 4
溫度系數(shù)： 標準值 150 ppm/°C
存儲器類型： 非易失
接口： I²C（設備位址）
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-VFQFN 裸露焊盤
供應商設備封裝： 20-QFN 裸露焊盤（4x4）
包裝： 管件
MCP444X/446X
DS22265A-page 94
2010 Microchip Technology Inc.
Using the simulation models of the NMOS and PMOS
devices for the MCP44XX analog switch (Figure B-10),
we plot the device resistance when the devices are
turned on. Figure B-11 and Figure B-12 show the
resistances of the NMOS and PMOS devices as the
VIN voltage is increased. The wiper resistance (RW) is
simply the parallel resistance on the NMOS and PMOS
devices (RW = RNMOS || RPMOS). Below the threshold
voltage for the NMOS ad PMOS devices, the
resistance becomes very large (Gigaohms). In the
transistors active region, the resistance is much lower.
For these graphs, the resistances are on different
scales. Figure B-13 and Figure B-14 only plot the
NMOS and PMOS device resistance for their active
region and the resulting wiper resistance. For these
graphs, all resistances are on the same scale.
FIGURE B-10:
Analog Switch.
FIGURE B-11:
NMOS and PMOS
Transistor Resistance (RNMOS, RPMOS) and
Wiper Resistance (RW) VS. VIN
(VDD = 3.0V).
FIGURE B-12:
NMOS and PMOS
Transistor Resistance (RNMOS, RPMOS) and
Wiper Resistance (RW) VS. VIN
(VDD = 1.8V).
FIGURE B-13:
NMOS and PMOS
Transistor Resistance (RNMOS, RPMOS) and
Wiper Resistance (RW) VS. VIN
(VDD = 3.0V).
FIGURE B-14:
NMOS and PMOS
Transistor Resistance (RNMOS, RPMOS) and
Wiper Resistance (RW) VS. VIN
(VDD = 1.8V).
RW
NMOS
PMOS
VG (VDD/VSS)
“gate”
VOUT
VIN
0.00E+00
5.00E+09
1.00E+10
1.50E+10
2.00E+10
2.50E+10
3.00E+10
0.0
0.3
0.6
0.9
1.2
1.5
1.8
VIN Voltage
NMOS
and
PMOS
Resistance
()
0
500
1000
1500
2000
2500
Wiper
Resistance
(
)
RPMOS
RNMOS
RW
PMOS
Theshold
NMOS
Theshold
0.00E+00
1.00E+09
2.00E+09
3.00E+09
4.00E+09
5.00E+09
6.00E+09
7.00E+09
0.0
0.6
1.2
1.8
2.4
3.0
VIN Voltage
NMOS
and
PMOS
Resistance
()
0
20
40
60
80
100
120
140
160
Wiper
Resistance
(
)
RPMOS
RNMOS
RW
PMOS
Theshold
NMOS
Theshold
0
50
100
150
200
250
300
0.0
0.6
1.2
1.8
2.4
3.0
VIN Voltage
Resistance
()
RPMOS
RNMOS
RW
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
0.0
0.3
0.6
0.9
1.2
1.5
1.8
VIN Voltage
Resistance
()
RPMOS
RNMOS
RW
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MCP4441-503E/ST 制造商:Microchip Technology Inc 功能描述:; End To End Resistance:50kohm; Track Ta 制造商:Microchip Technology Inc 功能描述:IC, DIG POT, 50kohm, 129STEPS, QUAD, TSSOP-20
MCP4441T-103E/ML 功能描述:數(shù)字電位計 IC 10k I2C Qd Ch 7bit Nonvolatile memory 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 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel
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