ISL22323 双数字电位器（数字电位器TM）

# of Devices/ Channels	2
# of Taps	256
Memory Type	Non-Volatile
Bus Interface Type	I2C
Resistance Options (kΩ)	10, 50, 100
VCC Range (V)	2.25 to 5.5
VCC (min) (V)	2.25
VCC (max) (V)	5.5
DCP Dual Supply Range (V)	-2.25 to -5.5
DCP Single Supply Range (V)
Resistance Taper	Linear
Wiper Current (mA)	3
Wiper Resistance (Ω)	70
Supply Current (μA)	0.5
Max Operating Temp (°C)	125
End-to-End Tempco (ppm/°C)	45
Middlepoint Ratiometric Tempco	4
VL min. terminal voltage (V)	-5.5
VH max. terminal voltage (V)	5.5

The ISL22323 integrates two digitally controlled potentiometers (DCP), control logic and non-volatile memory on a monolithic CMOS integrated circuit.

The digitally controlled potentiometer is 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. The potentiometer has an associated volatile Wiper Register (WRi) and a non-volatile Initial Value Register (IVRi) that can be directly written to and read by the user. The contents of the WRi control the position of the corresponding wiper. At power up the device recalls the contents of the DCP's IVRi to the correspondent WRi.

The ISL22323 also has 13 general purpose non-volatile registers that can be used as storage of lookup table for multiple wiper position or any other valuable information.

The ISL22323 features a dual supply, that is beneficial for applications requiring a bipolar range for DCP terminals between V- and VCC.

Each DCP can be used as three-terminal potentiometers or as two-terminal variable resistors in a wide variety of applications including control, parameter adjustments, and signal processing.

ISL22323 产品特性

• Two potentiometers in one package
• 256 resistor taps
• I2C serial interface
  • Three address pins, up to eight devices per bus
• Non-volatile EEPROM storage of wiper position
• 13 General Purpose non-volatile registers
• High reliability
  • Endurance: 1,000,000 data changes per bit per register
  • Register data retention: 50 years @ T ≤ +55°C
• Wiper resistance: 70Ω typical @ 1mA
• Standby current <4μA max
• Shut-down current <4μA max
• Dual power supply
  • VCC = 2.25V to 5.5V
  • V- = -2.25V to -5.5V
• 10kΩ, 50kΩ or 100kΩ total resistance
• Extended industrial temperature range: -40 to +125°C
• 14 Ld TSSOP or 16 Ld QFN
• Pb-free (RoHS compliant)

ISL22323 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 $
ISL22323TFR16Z	量产	Ind	16 Ld QFN	1	2.44
ISL22323TFR16Z-TK	量产	Ind	16 Ld QFN T +R	1	2.44
ISL22323TFV14Z	量产	Ind	14 Ld TSSOP	1	2.44
ISL22323TFV14Z-TK	量产	Ind	14 Ld TSSOP T+R	1	2.44
ISL22323UFR16Z	量产	Ind	16 Ld QFN	1	2.44
ISL22323UFR16Z-TK	量产	Ind	16 Ld QFN T +R	1	2.44
ISL22323UFV14Z	量产	Ind	14 Ld TSSOP	1	2.44
ISL22323UFV14Z-TK	量产	Ind	14 Ld TSSOP T+R	1	2.44
ISL22323WFR16Z	量产	Ind	16 Ld QFN	1	2.44
ISL22323WFR16Z-TK	量产	Ind	16 Ld QFN T +R	1	2.44
ISL22323WFV14Z	量产	Ind	14 Ld TSSOP	1	2.44
ISL22323WFV14Z-TK	量产	Ind	14 Ld TSSOP T+R	1	2.44

ISL22323 应用技术支持与电子电路设计开发资源下载

1. ISL22323 数据资料 datatSheet 下载.PDF