ISL22346 四重数控电位器（数字电位器TM）

# of Devices/ Channels	4
# of Taps	128
Memory Type	Non-Volatile
Bus Interface Type	I2C
Resistance Options (kΩ)	10, 50
VCC Range (V)	2.7 to 5.5
VCC (min) (V)	2.7
VCC (max) (V)	5.5
DCP Dual Supply Range (V)	N/A
DCP Single Supply Range (V)	0 to 5.5
Resistance Taper	Linear
Wiper Current (mA)	3
Wiper Resistance (Ω)	70
Supply Current (μA)	5
Max Operating Temp (°C)	125
End-to-End Tempco (ppm/°C)	50
Middlepoint Ratiometric Tempco	4
VL min. terminal voltage (V)	0
VH max. terminal voltage (V)	5.5

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 产品特性

• 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)

ISL22346 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 $
ISL22346UFRT20Z	量产	Full-Range Ind	20 Ld TQFN	1	2.64
ISL22346UFRT20Z-TK	量产	Full-Range Ind	20 Ld TQFN T +R	1	2.64
ISL22346UFV20Z	量产	Full-Range Ind	20 Ld TSSOP	1	2.64
ISL22346UFV20Z-TK	量产	Full-Range Ind	20 Ld TSSOP T+R	1	2.64
ISL22346WFRT20Z	量产	Full-Range Ind	20 Ld TQFN	1	2.64
ISL22346WFRT20Z-TK	量产	Full-Range Ind	20 Ld TQFN T +R	1	2.64
ISL22346WFV20Z	量产	Full-Range Ind	20 Ld TSSOP	1	2.64
ISL22346WFV20Z-TK	量产	Full-Range Ind	20 Ld TSSOP T+R	1	2.64

ISL22346 应用技术支持与电子电路设计开发资源下载

1. ISL22346 数据资料 datatSheet 下载.PDF