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參數(shù)資料
| 型號(hào)： | DS2890X-000 |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 21/27頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC POT DIGITAL 1-WIRE 100K CSP |
| 標(biāo)準(zhǔn)包裝： | 10,000 |
| 接片： | 256 |
| 電阻（歐姆）： | 100k |
| 電路數(shù)： | 1 |
| 溫度系數(shù)： | 標(biāo)準(zhǔn)值 800 ppm/°C |
| 存儲(chǔ)器類(lèi)型： | 易失 |
| 接口： | 1 線 串行 |
| 電源電壓： | 2.8 V ~ 6 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 6-XBGA，F(xiàn)CBGA |
| 供應(yīng)商設(shè)備封裝： | 6-覆晶（2.82x2.54） |
| 包裝： | 帶卷 (TR) |
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DS2890
3 of 27
OPERATION
The DS2890 is a single element digital potentiometer; a block diagram of the device is shown in Figure 1.
The device has a total of 256 linearly spaced tap points including the RL and RH terminals; a total of 255
resistive segments exist between the RL and RH terminals. These tap points are accessible to the WIPER
terminal whose position is controlled via the 1-Wire bus interface. Wiper position and device state are
maintained as long as the 1-Wire bus is active or the VDD supply is applied within operating limits.
Otherwise, a power-on reset will occur and the wiper position and operating state will return to power-on
default conditions.
FIGURE 1. DS2890 BLOCK DIAGRAM
As shown in the figure the device has five major elements: the 1-Wire Function Controller, the
Potentiometer Controller, the 64-bit ROM, the resistor array, and Parasite Power circuitry. Each of these
elements is discussed in detail throughout the remainder of the data sheet. DS2890 control including
device selection, positioning/reading the potentiometer wiper, and device operating state is performed
over the 1-Wire bus. The hierarchical structure of the 1-Wire protocol as applicable to the DS2890 is
shown in Figure 2. As shown, the control sequence starts with the 1-Wire bus master issuing one of eight
ROM function commands. After a ROM function command is successfully completed potentiometer
functions may be executed. The protocol for ROM and potentiometer functions are described in the
“COMMAND FLOW” section.
For the 3-pin TO-92 package configuration and operation see the
“TO-92 PACKAGE OPERATION” section.
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| DS28CM00 | 制造商:MAXIM 制造商全稱(chēng):Maxim Integrated Products 功能描述:IC/SMBus Silicon Serial Number |
| DS28CM00EVKIT | 制造商:Maxim Integrated Products 功能描述:DS28CM00 EV-BOARD W/ MAXQ BOARD - Rail/Tube |
| DS28CM00R-A00+T | 功能描述:序列號(hào)注冊(cè) I2C/SMBus Silicon Serial Number RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)總線寬度: 電源電壓-最大: 電源電壓-最小: 最大工作溫度: 最小工作溫度: 安裝風(fēng)格: 封裝 / 箱體: |
| DS28CM00R-A00+U | 制造商:Maxim Integrated Products 功能描述:SMBUS SILICON SERIAL NUMBER 制造商:Maxim Integrated Products 功能描述:SMBUS INTRFC 5PIN SOT-23 - Rail/Tube 制造商:Maxim Integrated Products 功能描述:SILICON SERIAL NUMBER, 5-SOT23 制造商:Maxim Integrated Products 功能描述:SILICON SERIAL NUMBER, 5-SOT23, IC Function:Silicon Serial Number IC, Brief Feat |
| DS28CN01 | 制造商:MAXIM 制造商全稱(chēng):Maxim Integrated Products 功能描述:1Kbit IC/SMBus EEPROM with SHA-1 Engine |
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