The DS1666 Audio Taper Potentiometer is a solid-state, 128-position digital potentiometer with a pseudo-logarithmic resistor array designed to behave with analog characteristics, specifically suited to audio applications. Wiper position is controlled via a simple increment/decrement control interface.

On power-up, the wiper for the DS1666 is set to 10% of active digital taps/3% of total end-to-end resistance of the potentiometer. Taps on the lower portion of the potentiometer increment 0.25% of the total resistance within ±0.5% of the expected value. Taps on the higher portion increment 1.5% of the total resistance within ±2.0% of the expected value. The DS1666 can operate using a bipolar ±5-volt supply or single +5-volt supply.

As an electronically controlled IC, the DS1666 gives designers and users the digital advantages of more control, flexibility and accuracy, while mimicking audio taper capability. Standard IC packaging is also consistent with automated assembly processes.


  • Digitally controlled, 128-position potentiometer
  • Pseudo-logarithmic resistor characteristic
  • Single or dual power supply operation (+5-volt or ±5-volt)
  • Increment/decrement control interface
  • Wiper position defaults to 3% of total potentiometer resistance on power up
  • 10kΩ, 50kΩ, and 100kΩ versions
  • Wide analog voltage range of ±5 volts
  • Operates from 5V power supply with TTL input
  • Operating temperature range: -40°C to +85°C


  • アプリケーション
  • オーディオ音量調整
  • 携帯電話およびPDA
  • ポータブル電子機器
  • 7ビット対数DAC機能の代替
  • メカニカルポテンショメータの代替
製品の信頼性レポート: DS1666.pdf 
デバイス   ウェハープロセス   プロセス技術   サンプルサイズ   不合格   FIT (25°C)   FIT (55°C)   Material Composition  

注: 不良率はプロセス技術ごとにまとめられ、関連する型番にマッピングされます。 不良率はテストされたユニット数に大きく依存します。

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