概要

The ISL22346 integrates four digitally controlled potentiometers (DCP) and non-volatile memory on a monolithic CMOS integrated circuit. The digitally controlled potentiometers are implemented with a combination of resistor elements and CMOS switches. The position of the wipers are controlled by the user through the I2C bus interface. Each potentiometer has an associated volatile Wiper Register (WR) and a non-volatile Initial Value Register (IVR) that can be directly written to and read by the user. The contents of the WR controls the position of the wiper. At power-up the device recalls the contents of the two DCP's IVR to the corresponding WRs. The DCPs can be used as a three-terminal potentiometers or as a two-terminal variable resistors in a wide variety of applications including control, parameter adjustments, and signal processing.

ISL22346 Functional Diagram
ISL22346 Functional Diagram
  • Four potentiometers in one package
  • 128 resistor taps
  • I2C serial interface
  • Three address pins, up to eight devices/bus
  • Non-volatile storage of wiper position
  • Wiper resistance: 70Ω typical @ VCC = 3.3V
  • Shutdown mode
  • Shutdown current 5µA max
  • Power supply: 2.7V to 5.5V
  • 50kΩ or 10kΩ total resistance
  • High reliability
  • Endurance: 1,000,000 data changes per bit per register
  • Register data retention: 50 years @ T ≤ +55°C
  • 20 Ld TSSOP or 20 Ld TQFN package
  • Pb-free (RoHS compliant)

ドキュメント

設計・開発

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ライブラリ
DCP Evaluation Board Software v6.03
EXE 2.56 MB
1件

ECADモデル

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ECADモデルを調べる
Diagram of ECAD Models

製品選択

    Processing table
    Pkg. Type
    Carrier Type
    Moisture Sensitivity Level (MSL)
    Price (USD) | 1ku
    ご購入 / サンプル
    型名
    ISL22346UFRT20Z
    circleアクティブ
    memory
    spa
    view_in_ar
    サンプル入手可能
    今すぐ購入する
    		TQFN Tray 1 2.2 サンプルを入手,
    ISL22346UFRT20Z-TK
    circleアクティブ
    memory
    spa
    view_in_ar
    		TQFN Reel 1 2.489
    ISL22346UFV20Z
    circleアクティブ
    memory
    spa
    view_in_ar
    サンプル入手可能
    今すぐ購入する
    		TSSOP Tube 1 2.489 サンプルを入手,
    ISL22346UFV20Z-TK
    circleアクティブ
    memory
    spa
    view_in_ar
    		TSSOP Reel 1 2.489
    ISL22346WFRT20Z
    circleアクティブ
    memory
    spa
    view_in_ar
    サンプル入手可能
    		 TQFN Tray 1 サンプルを入手,
    ISL22346WFRT20Z-TK
    circleアクティブ
    memory
    spa
    view_in_ar
    サンプル入手可能
    今すぐ購入する
    		TQFN Reel 1 2.362 サンプルを入手,
    ISL22346WFV20Z
    circleアクティブ
    memory
    spa
    view_in_ar
    サンプル入手可能
    今すぐ購入する
    		TSSOP Tube 1 2.419 サンプルを入手,
    ISL22346WFV20Z-TK
    circleアクティブ
    memory
    spa
    view_in_ar
    今すぐ購入する
    		TSSOP Reel 1
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