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参数资料
| 型号： | DS1868-50 |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/14页 |
| 文件大小： | 0K |
| 描述： | IC POT DIGITAL DUAL 50K 14-DIP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 25 |
| 接片： | 256 |
| 电阻（欧姆）： | 50k |
| 电路数： | 2 |
| 温度系数： | 标准值 750 ppm/°C |
| 存储器类型： | 易失 |
| 接口： | 3 线串口 |
| 电源电压： | 2.7 V ~ 3.3 V，4.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 14-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 14-PDIP |
| 包装： | 管件 |
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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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1868-50+ | 功能描述:数字电位计 IC Dual 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 |
| 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 |
| DS1868BE-050+ | 制造商:Maxim Integrated Products 功能描述:DUAL 256-STEP DIGITAL POTENTIOMETER, 50K OHM END TO END RESI - Rail/Tube |
| DS1868BE-050+T/R | 制造商:Maxim Integrated Products 功能描述:DUAL 256-STEP DIGITAL POTENTIOMETER, 50K OHM END TO END RESI - Tape and Reel |
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