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參數(shù)資料
| 型號： | DS1869-50 |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 4/8頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC RHEOSTAT DALLAST 3V 50K 16DIP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 產(chǎn)品變化通告： | DS1869 Series Discontinuation 10/May/2012 |
| 標(biāo)準(zhǔn)包裝： | 50 |
| 系列： | Dallastat™ |
| 接片： | 64 |
| 電阻（歐姆）： | 50k |
| 電路數(shù)： | 1 |
| 溫度系數(shù)： | 標(biāo)準(zhǔn)值 750 ppm/°C |
| 存儲(chǔ)器類型： | 非易失 |
| 接口： | 上/下 |
| 電源電壓： | ± 2.7 V ~ 8 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 通孔 |
| 封裝/外殼： | 16-DIP（0.300"，7.62mm） |
| 供應(yīng)商設(shè)備封裝： | 16-PDIP |
| 包裝： | 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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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1869-50+ | 功能描述:數(shù)字電位計(jì) IC 3V Dallastat Digital Rheostat 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(chǔ)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 |
| DS1869S010 | 制造商:DALLAS 功能描述:New |
| DS1869S-010 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Digital Potentiometer |
| DS1869S-010/T&R | 制造商:Maxim Integrated Products 功能描述:IC RHEOSTAT DALLAST 3V 10K 8SOIC |
| DS1869S-010/T&R | 功能描述:數(shù)字電位計(jì) IC 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(chǔ)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 |
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