- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄9328 > MCP4262T-503E/UN (Microchip Technology)IC RHEOSTAT 50K 2CH 10MSOP PDF資料下載
參數(shù)資料
| 型號： | MCP4262T-503E/UN |
| 廠商： | Microchip Technology |
| 文件頁數(shù)： | 57/88頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC RHEOSTAT 50K 2CH 10MSOP |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 系列： | WiperLock™ |
| 接片： | 257 |
| 電阻（歐姆）： | 50k |
| 電路數(shù)： | 2 |
| 溫度系數(shù)： | 標(biāo)準(zhǔn)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-TFSOP，10-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 10-MSOP |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | MCP4262T-503-E/UN MCP4262T-503-E/UNTR MCP4262T-503-E/UNTR-ND MCP4262T-503E/UNTR |
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頁當(dāng)前第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
MCP414X/416X/424X/426X
DS22059B-page 60
2008 Microchip Technology Inc.
8.2
Techniques to force the CS pin to
VIHH
The circuit in Figure 8-3 shows a method using the
TC1240A doubling charge pump. When the SHDN pin
is high, the TC1240A is off, and the level on the CS pin
is controlled by the PIC microcontrollers (MCUs) IO2
pin.
When the SHDN pin is low, the TC1240A is on and the
VOUT voltage is 2 * VDD. The resistor R1 allows the CS
pin to go higher than the voltage such that the PIC
MCU’s IO2 pin “clamps” at approximately VDD.
FIGURE 8-3:
Using the TC1240A to
generate the VIHH voltage.
The circuit in Figure 8-4 shows the method used on the
MCP402X Non-volatile Digital Potentiometer Evalua-
tion Board (Part Number: MCP402XEV). This method
requires that the system voltage be approximately 5V.
This ensures that when the PIC10F206 enters a
brown-out condition, there is an insufficient voltage
level on the CS pin to change the stored value of the
wiper. The MCP402X Non-volatile Digital Potentiome-
ter Evaluation Board User’s Guide (DS51546) contains
a complete schematic.
GP0 is a general purpose I/O pin, while GP2 can either
be a general purpose I/O pin or it can output the internal
clock.
For the serial commands, configure the GP2 pin as an
input (high impedance). The output state of the GP0 pin
will determine the voltage on the CS pin (VIL or VIH).
For high-voltage serial commands, force the GP0
output pin to output a high level (VOH) and configure the
GP2 pin to output the internal clock. This will form a
charge pump and increase the voltage on the CS pin
(when the system voltage is approximately 5V).
FIGURE 8-4:
MCP4XXX Non-volatile
Digital Potentiometer Evaluation Board
(MCP402XEV) implementation to generate the
VIHH voltage.
8.3
Using Shutdown Modes
Figure 8-5 shows a possible application circuit where
the
independent
terminals
could
be
used.
Disconnecting the wiper allows the transistor input to
be taken to the Bias voltage level (disconnecting A and
or B may be desired to reduce system current).
Disconnecting Terminal A modifies the transistor input
by the RBW rheostat value to the Common B.
Disconnecting Terminal B modifies the transistor input
by the RAW rheostat value to the Common A. The
Common A and Common B connections could be
connected to VDD and VSS.
FIGURE 8-5:
Example Application Circuit
using Terminal Disconnects.
CS
PIC MCU
MCP402X
R1
IO1
IO2
C2
TC1240A
VIN
SHDN
C+
C-
VOUT
C1
CS
PIC10F206
MCP4XXX
R1
GP0
GP2
C2
C1
Balance
Bias
W
B
Input
To base
of Transistor
(or Amplifier)
A
Common B
Common A
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M83723/83W2219N | CONN RCPT 19POS WALL MT W/PINS |
| MCP4261T-503E/SL | IC DGTL POT 50K 2CH 14SOIC |
| MCP4261T-503E/ST | IC DGTL POT 50K 2CH 14TSSOP |
| VI-2NX-MY-F2 | CONVERTER MOD DC/DC 5.2V 50W |
| VE-BNK-IU-F4 | CONVERTER MOD DC/DC 40V 200W |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCP42XXDM-PTPLS | 功能描述:子卡和OEM板 MCP42XX PICTail Plus Daughter Board RoHS:否 制造商:BeagleBoard by CircuitCo 產(chǎn)品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit |
| MCP42XXEV | 功能描述:數(shù)字電位計(jì)開發(fā)工具 MCP42XX Eval Board RoHS:否 制造商:Arduino 產(chǎn)品:TinkerKit Rotary Potentiometers 工具用于評估:TinkerKit 電阻:4.7 kOhms 工作電源電壓:0 V to 5 V |
| MCP431550R | 制造商:Eaton Corporation 功能描述:TYPE MCP MOTOR CIRCUIT PROTECTOR 150A FOR SIZE 4 STARTER |
| MCP4331-103E/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 |
| MCP4331-103E/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，3分鐘左右您將得到回復(fù)。