參數(shù)資料
型號(hào)： MCP4451-502E/ML
廠商： Microchip Technology
文件頁(yè)數(shù)： 8/22頁(yè)
文件大小： 0K
描述： IC POT 5K QUAD 8BIT 20QFN
標(biāo)準(zhǔn)包裝： 91
接片： 257
電阻（歐姆）： 5k
電路數(shù)： 4
溫度系數(shù)： 標(biāo)準(zhǔn)值 150 ppm/°C
存儲(chǔ)器類(lèi)型： 易失
接口： I²C（設(shè)備位址）
電源電壓： 1.8 V ~ 5.5 V
工作溫度： -40°C ~ 125°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 20-VFQFN 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝： 20-QFN 裸露焊盤(pán)（4x4）
包裝： 管件
16
Digital Potentiometer Design Guide
Digital Potentiometer Solutions
Voltage Windowing
Resistance Options and Resolutions
Microchip offers Digital Potentiometer devices with typical
RAB resistances of 2.1 KΩ, 5 KΩ, 10 KΩ, 50 KΩ and 100
KΩ. The devices offer either 6-, 7- or 8-bits of resolution.
The step resistance (RS) is the RAB resistances divided by
the number of RS resistors in the RAB ladder.
The step resistance is important to understand when
you are using the device in a rheostat mode, or the
potentiometer is being windowed by resistors on the
Terminal A and/or on the Terminal B.
Voltage Windowing
Terminal A and Terminal B may for example be any
voltage within the device specification limits. Lets call the
voltages at these nodes VA and VB. So the voltage across
the resistor RAB (VAB) is | VA - VB |. The VAB voltage is
determined by the values of the R1, R2 and RAB resistors.
As the VAB voltage becomes smaller relative to the voltage
range, the effective resolution of the device increase,
though the resolution is limited to between the VA and VB
voltages.
This allows a less precise device to be used for more
precise circuit tuning over a narrower range. When
replacing a mechanical potentiometer, this configuration
can be used and R1 and R2 may be any resistance
(including 0).
Resistance Options
RAB
6-bit (63)
7-bit (127)
7-bit (128)
8-bit (256)
2100
33.33333333
–
5000
79.36507937
39.37007874
39.0625
19.53125
10000
158.7301587
78.74015748
78.125
39.0625
50000
793.6507937
393.7007874
390.625
195.3125
100000
–
787.4015748
781.25
390.625
How the VAB Voltage Effects the Effective Resolution
VAB
mV per Step
Effective VAB Resolution vs. Fixed VDD
Comment
6-bit (63)
7-bit (127)
7-bit (128)
8-bit (256)
6-bit (63)
7-bit (127)
7-bit (128)
8-bit (256)
5.00
79.4E
39.4E
39.1E
19.5E
6-bit
7-bit
8-bit
VAB = VDD
2.50
39.7E
19.7E
19.5E
9.8E
7-bit
8-bit
9-bit
VDD = 5.0V
1.25
19.8E
9.8E
4.9E
8-bit
9-bit
10-bit
VDD = 5.0V
相關(guān)PDF資料
PDF描述
VE-BN2-MW-B1 CONVERTER MOD DC/DC 15V 100W
VE-2NZ-MX-F2 CONVERTER MOD DC/DC 2V 30W
VE-BNW-MW-B1 CONVERTER MOD DC/DC 5.5V 100W
AD5161BRMZ50-RL7 IC DGTL POT 256POS 50K 10MSOP
MS3450L20-14S CONN RCPT 5POS WALL MNT W/SCKT
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCP4451-503E/ML 功能描述:數(shù)字電位計(jì) IC 50k I2Cquad Ch Pot 8bit volatile 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(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
MCP4451-503E/ST 功能描述:數(shù)字電位計(jì) IC 50k I2Cquad Ch Pot 8bit volatile 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(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
MCP4451T-502E/ST 制造商:Microchip Technology Inc 功能描述:5K, I2C, QUAD CHANNEL POT, 8-BIT, VOLATILE MEMORY, TSSOP - Tape and Reel
MCP4452-103E/ST 功能描述:數(shù)字電位計(jì) IC 10k I2Cquad Ch Rheo 8bit volatile 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(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
MCP4452-104E/ST 功能描述:數(shù)字電位計(jì) IC 100k I2Cquad Ch Rheo 8bit volatile 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(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
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*