- 您現(xiàn)在的位置：買賣IC網 > PDF目錄9331 > MCP4242T-502E/MF (Microchip Technology)IC POT DGTL DUAL 5K RHEO 10DFN PDF資料下載
參數(shù)資料
| 型號： | MCP4242T-502E/MF |
| 廠商： | Microchip Technology |
| 文件頁數(shù)： | 29/88頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC POT DGTL DUAL 5K RHEO 10DFN |
| 標準包裝： | 3,300 |
| 系列： | WiperLock™ |
| 接片： | 129 |
| 電阻（歐姆）： | 5k |
| 電路數(shù)： | 2 |
| 溫度系數(shù)： | 標準值 150 ppm/°C |
| 存儲器類型： | 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： | 10-VFDFN 裸露焊盤 |
| 供應商設備封裝： | 10-DFN-EP（3x3） |
| 包裝： | 帶卷 (TR) |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁當前第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁
2008 Microchip Technology Inc.
DS22059B-page 35
MCP414X/416X/424X/426X
5.0
RESISTOR NETWORK
The Resistor Network has either 7-bit or 8-bit
resolution. Each Resistor Network allows zero scale to
full scale connections. Figure 5-1 shows a block
diagram for the resistive network of a device.
The Resistor Network is made up of several parts.
These include:
Resistor Ladder
Wiper
Shutdown (Terminal Connections)
Devices have either one or two resistor networks,
These are referred to as Pot 0 and Pot 1.
FIGURE 5-1:
Resistor Block Diagram.
5.1
Resistor Ladder Module
The resistor ladder is a series of equal value resistors
(RS) with a connection point (tap) between the two
resistors. The total number of resistors in the series
(ladder)
determines
the
RAB resistance (see
Figure 5-1). The end points of the resistor ladder are
connected to analog switches which are connected to
the device Terminal A and Terminal B pins. The RAB
(and RS) resistance has small variations over voltage
and temperature.
For an 8-bit device, there are 256 resistors in a string
between terminal A and terminal B. The wiper can be
set to tap onto any of these 256 resistors thus providing
257 possible settings (including terminal A and terminal
B).
For a 7-bit device, there are 128 resistors in a string
between terminal A and terminal B. The wiper can be
set to tap onto any of these 128 resistors thus providing
129 possible settings (including terminal A and terminal
B).
Equation 5-1 shows the calculation for the step
resistance.
EQUATION 5-1:
RS CALCULATION
RS
A
RS
B
257
256
255
1
0
RW (1)
W
(01h)
Analog Mux
RW (1)
(00h)
RW (1)
(FEh)
RW (1)
(FFh)
RW (1)
(100h)
Note 1:
The wiper resistance is dependent on
several factors including, wiper code,
device VDD, Terminal voltages (on A, B,
and W), and temperature.
Also for the same conditions, each tap
selection resistance has a small variation.
This RW variation has greater effects on
some specifications (such as INL) for the
smaller
resistance
devices
(5.0 k)
compared to larger resistance devices
(100.0 k).
RAB
8-Bit
N =
128
127
126
1
0
(01h)
(00h)
(7Eh)
(7Fh)
(80h)
7-Bit
N =
R
S
R
AB
256
()
-------------
=
R
S
R
AB
128
()
--------------
=
8-bit Device
7-bit Device
相關PDF資料 |
PDF描述 |
|---|---|
| M83723/72R2039N | CONN RCPT 39POS WALL MT W/PINS |
| X1205S8T1 | IC RTC/CALENDAR 2-WIRE 8-SOIC |
| MCP4242T-503E/MF | IC POT DGTL DUAL 50K RHEO 10DFN |
| MCP4242-502E/MF | IC POT DGTL DUAL 5K RHEO 10DFN |
| MS27484T22B1P | CONN PLUG 100POS STRAIGHT W/PINS |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MCP4242T-503E/MF | 功能描述:數(shù)字電位計 IC Dual 7B NV SPI Rheo 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 |
| MCP4242T-503-E/ML | 功能描述:數(shù)字電位計 IC Dual 7B NV SPI Rheo 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 |
| MCP4242T-503E/UN | 功能描述:數(shù)字電位計 IC Dual 7B NV SPI Rheo 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 |
| MCP4242T-503-E/UN | 功能描述:數(shù)字電位計 IC Dual, 7bit, NV, SPI, Rheo 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 |
| MCP4251-103E/ML | 功能描述:數(shù)字電位計 IC Dual 8B V SPI POT 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復。