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參數(shù)資料
| 型號： | DS1868-100 |
| 元件分類： | 數(shù)字電位計 |
| 英文描述： | Dual Digital Potentiometer Chip |
| 中文描述： | 雙數(shù)字電位器芯片 |
| 文件頁數(shù)： | 8/14頁 |
| 文件大?。?/td> | 276K |
| 代理商： | DS1868-100 |
DS1868
3 of 14
DS1868 BLOCK DIAGRAM Figure 1
I/O SHIFT REGISTER Figure 2
Transmission of data always begins with the stack select bit followed by the potentiometer-1 wiper
position value and lastly the potentiometer-0 wiper position value.
When wiper position data is to be written to the DS1868, 17 bits (or some integer multiple) of data should
always be transmitted. Transactions which do not send a complete 17 bits (or multiple) will leave the
register incomplete and possibly an error in the desired wiper positions.
After a communication transaction has been completed the RST signal input should be taken to a low
state to prevent any inadvertent changes to the device shift register. Once RST has reached a low state,
the contents of the I/O shift register are loaded into the respective multiplexers for setting wiper position.
A new wiper position will only engage after a RST transition to the inactive state. On device power-up,
wiper position will be random.
STACKED CONFIGURATION
The potentiometers of the DS1868 can be connected in series as shown in Figure 3. This is referred to as
the stacked configuration and allows the user to double the total end-to-end resistance of the part. The
resolution of the combined potentiometers will remain the same as a single potentiometer but with a total
of 512 wiper positions available. Device resolution is defined as RTOT /256 (per potentiometer); where
RTOT equals the total potentiometer resistance.
The wiper output for the combined stacked potentiometer will be taken at the SOUT pin, which is the
multiplexed output of the wiper of potentiometer-0 (W0) or potentiometer-1 (W1). The potentiometer
wiper selected at the SOUT output is governed by the setting of the stack select bit (bit 0) of the 17-bit I/O
shift register. If the stack select bit has value 0, the multiplexed output, SOUT, will be that of the
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| DS1868-100+ | 功能描述:數(shù)字電位計 IC Dual 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 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| DS1868-50 | 功能描述:數(shù)字電位計 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 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| DS1868-50+ | 功能描述:數(shù)字電位計 IC Dual 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 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| DS1868BE-010+ | 制造商:Maxim Integrated Products 功能描述:DUAL 256-STEP DIGITAL POTENTIOMETER - Rail/Tube 制造商:Maxim Integrated Products 功能描述:IC DGTL POT 10K 2CH 20TSSOP |
| DS1868BE-010+T/R | 制造商:Maxim Integrated Products 功能描述:DUAL 256-STEP DIGITAL POTENTIOMETER - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC DGTL POT 10K 2CH 20TSSOP |
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