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参数资料
| 型号： | DS1666S-100/T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/9页 |
| 文件大小： | 0K |
| 描述： | IC DIG POT 100K 16SOIC |
| 标准包装： | 1,000 |
| 接片： | 128 |
| 电阻（欧姆）： | 100k |
| 电路数： | 1 |
| 温度系数： | 标准值 750 ppm/°C |
| 存储器类型： | 易失 |
| 接口： | 3 线串行（芯片选择，递增，增/减） |
| 电源电压： | 4.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC W |
| 包装： | 带卷 (TR) |
DS1666
2 of 9
102899
The DS1666 is uniquely designed to provide a potentiometer that is pseudo-logarithmic rather than linear
across its entire range. The lower half of the potentiometer advances 1% of total resistance for each 3%
of scale advanced, providing for precise amplification of low volume signals. The upper half of the
potentiometer advances 2% of resistance for every 1% of scale advanced, providing for the lower
resolution gain required for high volume amplification.
GRAPH OF AUDIO TAPER Figure 1
OPERATION
The DS1666 has a total of 128 tap-points including the VL and VH terminals. A total of 127 resistive
segments exist between the VL and VH terminals. These tap-points are accessible to the VW terminal
whose position is controlled via a 3-terminal control port. A block diagram of the DS1666 is shown in
Figure 2.
The 3-terminal port of the DS1666 provides an increment/ decrement interface which is activated via a
chip select input. This interface consists of the input signals CS , INC , and U/ D . These input signals
control a 7-bit up/down counter. The output of the 7-bit up/down counter controls a 1 of 128 decoder to
select wiper position. The timing diagram for the 3-terminal interface control is shown in Figure 4.
ANALOG CHARACTERISTICS
The DS1666 has a pseudo-logarithmic resistor array that resembles an audio taper potentiometer as
shown in Figure 1. Taps on the lower portion of the potentiometer increment 0.25% of the total
resistance and are specified to within ±0.5% of the expected value. Taps on the higher portion increment
1.5% of the total resistance and are specified to within ±2.0% of the expected value.
End-to-End Resistance Tolerance = ±20 %
Temperature Coefficient = 750 PPM/°C typical
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1666S-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 |
| DS1666S-50/T&R | 制造商:Maxim Integrated Products 功能描述:IC DIG POT 50K 16SOIC |
| DS1666S-50/T&R | 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 |
| DS1666S-50+ | 功能描述:数字电位计 IC 5V+/- Pseudo Log Audio 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 |
| DS1666S-50+T&R | 制造商:Maxim Integrated Products 功能描述:IC DIG POT 50K 16SOIC |
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