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参数资料
| 型号： | DS2890X-000 |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 26/27页 |
| 文件大小： | 0K |
| 描述： | IC POT DIGITAL 1-WIRE 100K CSP |
| 标准包装： | 10,000 |
| 接片： | 256 |
| 电阻（欧姆）： | 100k |
| 电路数： | 1 |
| 温度系数： | 标准值 800 ppm/°C |
| 存储器类型： | 易失 |
| 接口： | 1 线 串行 |
| 电源电压： | 2.8 V ~ 6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-XBGA，FCBGA |
| 供应商设备封装： | 6-覆晶（2.82x2.54） |
| 包装： | 带卷 (TR) |
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DS2890
8 of 27
WIPER RESISTANCECONSIDERATIONS
A simplified diagram of the DS2890 resistor array for the potentiometer configuration is shown in
FIGURE 7. In this figure the
rDS resistance of the wiper transistors in Figure 1 are modeled as wiper
resistance RWIPER. The value of RWIPER varies with device configuration, operational state, and wiper
terminal voltage. Wiper resistance is significantly reduced when an external VDD supply is used and the
device charge pump is enabled. A wiper resistance graph with the charge pump enabled is shown in
FIGURE 8.
FIGURE 7. Potentiometer Resistor Model
RH
R
WIPER
RL
WIPER
FIGURE 8. Typical Wiper Resistance vs Wiper Voltage at 25
oC,
Charge Pump ON
100
1000
0.1
5.5
11
Voltage Across Wiper (V)
Wiper
Resistance
(ohms)
When packaged in a 3-pin TO-92 or configured as a variable resistor, the DS2890 takes on a
configuration as shown in FIGURE 9Error! Reference source not found., aError! Reference source
not found. simplified model is shown in Figure 10. As shown, the RL and Wiper terminals and are
connected to GND and the resistance between the RH terminal and GND is varied. As described
previously, the DS2890 charge pump must be turned off (default state) for operation with the TO-92
package or when VDD is not applied. Wiper resistance for a configuration with the charge pump
disabled is shown in FIGURE 11.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS28CM00 | 制造商:MAXIM 制造商全称: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:序列号注册 I2C/SMBus Silicon Serial Number RoHS:否 制造商:Maxim Integrated 数据总线宽度: 电源电压-最大: 电源电压-最小: 最大工作温度: 最小工作温度: 安装风格: 封装 / 箱体: |
| 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 制造商全称:Maxim Integrated Products 功能描述:1Kbit IC/SMBus EEPROM with SHA-1 Engine |
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