ISL22429 双数字电位器（数字电位器TM）

The ISL22429 integrates two 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 SPI serial 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 DCP’s IVR to the corresponding WR.

The DCP can be used as a voltage divider in a wide variety of applications including control, parameter adjustments, AC measurement and signal processing.

ISL22429 产品特性

• Two potentiometers in one package
• 128 resistor taps
• SPI serial interface
• Non-volatile storage of wiper position
• Wiper resistance: 70] typical @ 3.3V
• Shutdown mode
• Shutdown current 5μA max
• Power supply: 2.7V to 5.5V
• 50k] or 10k] total resistance
• High reliability
  • Endurance: 1,000,000 data changes per bit per register
  • Register data retention: 50 years @ T ≤ +55°C
• 10 Lead MSOP
• Pb-free plus anneal product (RoHS compliant)

ISL22429 芯片订购指南

芯片型号	产品状态	温度范围	封装尺寸图	潮湿敏感度等级MSL	美元价格US $
ISL22429UFU10Z	量产	工业级	10 Ld MSOP	1	1.49
ISL22429UFU10Z-TK	量产	工业级	10 Ld MSOP T+R	1	1.49
ISL22429WFU10Z	量产	工业级	10 Ld MSOP	1	1.49
ISL22429WFU10Z-TK	量产	工业级	10 Ld MSOP T+R	1	1.49

ISL22429 应用技术支持与电子电路设计开发资源下载

1. ISL22429 数据资料 datatSheet 下载.PDF