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參數(shù)資料
| 型號： | X9C503 |
| 元件分類： | 數(shù)字電位計 |
| 英文描述： | EEPOT Nonvolatile Digital Potentiometer(100個抽頭,-5V~+5V,50K總電阻,非易失性數(shù)字電位器) |
| 中文描述： | EEPOT非易失數(shù)字電位器（100個抽頭，- 5V的?5V的，50K的總電阻，非易失性數(shù)字電位器） |
| 文件頁數(shù)： | 7/8頁 |
| 文件大小： | 87K |
| 代理商： | X9C503 |
Xicor Application Note
AN120-7
AN120
because only three adjustments (setpoint, proportional
gain, and integrator time-constant) are involved in the
setup process.
The simplicity of the P/I feedback algorithm argues for a
similarly simple analog-based controller design. But some
temperature-control applications involve long time-
constants (running to minutes and hours) and often must
live in hostile (hot and contaminated) industrial
environments. These gremlins combine to make analog
long-time-constant circuits problematic, with their high
impedances and nano-ampere signal currents. This is so
because nasty ambients exaggerate the leakage and bias
currents of op amps, integrator capacitors, and even
circuit boards.
The controller shown in the Figure 6 achieves adequate
time-constants without the delicate high-impedance
analog circuits. It uses Xicor’s X9C103 digitally controlled
potentiometers as feedback elements together with the
Linear Technology LTC1040 sampled comparator.
Controller operation is based upon a positive-temperature-
coefficient (3850 ppm/°C) platinum RTD sensor arranged
in a standard ratiometric bridge with reference resistors
R1, R3, and R5, and setpoint pot R4. Aiding controller
stability and precision is high level (
excitation. It produces a relatively large 1.7 mV/°C RTD
output signal that competes well against noise pickup and
thermal-EMF error sources. Typically, such a high RTD
drive level would threaten to produce large and
unacceptable sensor self-heating errors. But in this case,
sensor excitation is pulsed (80μs) under control of the
LTC1040. This keeps average sensor dissipation duty
factor low (
1%) and self-heating error inconsequential.
5 mA) bridge
Figure 6. This controller acheives extended time constants without the delicate high-impedance analog
circuits by using Xicor’s X9C103 digitally-controlled potentiometers as feedback elements, combined with
Linear Technology’s LTC1040 sampled comparator.
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PDF描述 |
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| X9CC102P | IC |
| X9xx-EVM(中文) | Xicor DCP X9xx Evaluation Kit and LabVIEW Manual(XICOR DCP X9xx評估套件及LabVIEW使用手冊) |
| XA-S3 | XA 16-bit microcontroller 32 K/1 K OTP/ROM/ROMless, 8-channel 8-bit A/D, low voltage 2.7 V.5.5 V, I2C, 2 UARTs, 16 MB address range |
| XA-SCC | CMOS 16-bit communications microcontroller |
| XA1024 | Temperature Sensor(Frequencies Range Between 2 And 30 MHz)(溫度傳感器(頻率范圍: 2至 30 MHz)) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| X9C503DI | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Digital Potentiometer |
| X9C503DM | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Digital Potentiometer |
| X9C503P | 功能描述:IC DIGITAL POT 50K 100TP 8DIP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)字電位器 系列:XDCP™ 標(biāo)準(zhǔn)包裝:2,500 系列:XDCP™ 接片:256 電阻（歐姆）:100k 電路數(shù):1 溫度系數(shù):標(biāo)準(zhǔn)值 ±300 ppm/°C 存儲器類型:非易失 接口:I²C（設(shè)備位址） 電源電壓:2.7 V ~ 5.5 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) |
| X9C503PI | 功能描述:IC DIGITAL POT 50K 100TP 8DIP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)字電位器 系列:XDCP™ 標(biāo)準(zhǔn)包裝:2,500 系列:XDCP™ 接片:256 電阻（歐姆）:100k 電路數(shù):1 溫度系數(shù):標(biāo)準(zhǔn)值 ±300 ppm/°C 存儲器類型:非易失 接口:I²C（設(shè)備位址） 電源電壓:2.7 V ~ 5.5 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) |
| X9C503PIZ | 功能描述:IC XDCP 100-TAP 50K EE 8-DIP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)字電位器 系列:XDCP™ 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 接片:256 電阻（歐姆）:100k 電路數(shù):2 溫度系數(shù):標(biāo)準(zhǔn)值 35 ppm/°C 存儲器類型:易失 接口:6 線串行（芯片選擇，遞增，增/減） 電源電壓:2.6 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) |
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