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| 型号： | DS1869-100 |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/8页 |
| 文件大小： | 0K |
| 描述： | IC RHEOSTAT DALLAST 3V 100K 8DIP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 产品变化通告： | DS1869 Series Discontinuation 10/May/2012 |
| 标准包装： | 50 |
| 系列： | Dallastat™ |
| 接片： | 64 |
| 电阻（欧姆）： | 100k |
| 电路数： | 1 |
| 温度系数： | 标准值 750 ppm/°C |
| 存储器类型： | 非易失 |
| 接口： | 上/下 |
| 电源电压： | ± 2.7 V ~ 8 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 8-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-PDIP |
| 包装： | 管件 |
DS1869
4 of 8
DS1869 DUAL PORT CONFIGURATION (TYPICAL EXAMPLE) Figure 2B
The DS1869 is provided with two supply inputs -V and +V. The maximum voltage difference between
the two supply inputs is +8.0 volts. The minimum voltage difference is +2.7 volts. All input levels are
referenced to the negative supply input, -V. The voltage applied to any Dallastat terminal must not exceed
the negative supply voltage (-V ) by -0.5 or the positive supply voltage (+V) by +0.5 volts. The minimum
logic high level must be +2.4 volts with reference to the -V supply voltage input for +V=5V. A logic low
level with reference to the -V supply voltage has a maximum value of +0.8 volts. Dallastats exhibit a
typical wiper resistance of 400 ohms with a maximum wiper resistance of 1000 ohms. The maximum
wiper current allowed through the Dallastat is specified at 1 milliamps (see DC Electrical
Characteristics).
NONVOLATILE WIPER SETTINGS
Dallastats maintain the position of the wiper in the absence of power. This feature is provided through the
use of EEPROM type memory cell arrays. During normal operation the position of the wiper is
determined by the input multiplexer. Periodically, the multiplexer will update the EEPROM memory
cells. The manner in which an update occurs has been optimized for reliability, durability, and
performance. Additionally, the update operation is totally transparent to the user.
When power is applied to the Dallastat, the wiper setting will be the last recorded in the EEPROM
memory cells. If the Dallastat setting is changed after power is applied, the new value will be stored after
a delay of 2 seconds. The initial storage of a new value after power-up occurs when the first change is
made, regardless of when this change is made.
After the initial change on power-up all subsequent changes of the wiper position will be recorded only if
the 4
th LSB (out of a 6-bit total for 64 positions) is being changed. Thus any change greater than 12.5% of
the total resistance range will trigger one EEPROM write cycle.
Changes or storage to the EEPROM memory cells must allow for a 2-second delay to guarantee that
updates will occur. The EEPROM memory cells are specified to accept greater that 50,000 writes before a
wear-out condition. If the EEPROM memory cells do reach a wear-out condition, the Dallastat will still
function properly while power is applied. However, on power-up the device’s wiper position will be that
of the position last recorded before memory cell wear-out.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1869-100+ | 功能描述:数字电位计 IC 3V Dallastat Digital Rheostat RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| DS1869-50 | 功能描述:数字电位计 IC RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| DS1869-50+ | 功能描述:数字电位计 IC 3V Dallastat Digital Rheostat RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| DS1869S010 | 制造商:DALLAS 功能描述:New |
| DS1869S-010 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Digital Potentiometer |
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