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ISL22444WFR20Z-TK PDF预览

ISL22444WFR20Z-TK

更新时间： 2024-02-29 01:21:51
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19页 1260K
描述
Quad Digitally Controlled Potentiometer (XDCP™), Low Noise, Low Power, SPI® Bus, 256 Taps; QFN20, TSSOP20; Temp Range: -40° to 125°C

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ISL22444WFR20Z-TK 技术参数

是否Rohs认证： 符合生命周期：Obsolete
零件包装代码：QFN, TSSOP包装说明：HVQCCN, LCC20,.20SQ,25
针数：20, 20Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.8Base Number Matches：1

ISL22444WFR20Z-TK 数据手册

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DATASHEET  
NOT RECOMM  
ENDED FOR N  
RECOMMEND  
EW DESIGNS  
ED REPLACEM  
ENT PART  
ISL22424  
ISL22444  
FN6426  
Rev 0.00  
May 24, 2007  
Quad Digitally Controlled Potentiometer (XDCP™) Low Noise, Low Power, SPI®  
Bus, 256 Taps  
The ISL22444 integrates four digitally controlled  
potentiometers (DCP), control logic and non-volatile memory  
Features  
• Four potentiometers in one package  
• 256 resistor taps  
on a monolithic CMOS integrated circuit.  
The digitally controlled potentiometers are implemented with  
a combination of resistor elements and CMOS switches. The  
wipers position is controlled by the user through the SPI  
serial interface. Each 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  
wiper. At power-up the device recalls the contents of the  
DCP’s IVRi to the corresponding WRi.  
• SPI serial interface with write/read capability  
• Daisy Chain Configuration  
• Shutdown mode  
• Non-volatile EEPROM storage of wiper position  
• 11 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  
The ISL22444 also has 11 General Purpose non-volatile  
registers that can be used as storage of lookup table for  
multiple wiper position or any other valuable information.  
• Wiper resistance: 70typical @ 1mA  
• Standby current <4µA max  
• Shutdown current <4µA max  
• Dual power supply  
The ISL22444 features a dual supply that is beneficial for  
applications requiring a bipolar range for DCP terminals  
between V- and V  
.
CC  
Each DCP can be used as three-terminal potentiometer or  
as two-terminal variable resistor in a wide variety of  
applications including control, parameter adjustments, and  
signal processing.  
- V  
CC  
= 2.25V to 5.5V  
- V- = -2.25V to -5.5V  
• 10k 50kor 100ktotal resistance  
• Extended industrial temperature range: -40 to +125°C  
• 20 Ld TSSOP or 20 Ld QFN  
• Pb-free plus anneal product (RoHS compliant)  
Ordering Information  
PART NUMBER  
(Notes 1, 2)  
RESISTANCE  
OPTION (k)  
TEMPERATURE  
RANGE (°C)  
PACKAGE  
(Pb-free)  
PART MARKING  
22444 TFVZ  
PKG. DWG. #  
M20.173  
ISL22444TFV20Z  
ISL22444TFR20Z  
ISL22444UFV20Z  
ISL22444UFR20Z  
ISL22444WFV20Z  
ISL22444WFR20Z  
NOTES:  
100  
100  
50  
-40 to +125  
-40 to +125  
-40 to +125  
-40 to +125  
-40 to +125  
-40 to +125  
20 Ld TSSOP  
22444 TFRZ  
20 Ld QFN  
L20.5x5  
M20.173  
L20.5x5  
M20.173  
L20.5x5  
22444 UFVZ  
22444 UFRZ  
22444 WFVZ  
22444 WFRZ  
20 Ld TSSOP  
20 Ld QFN  
50  
10  
20 Ld TSSOP  
20 Ld QFN  
10  
1. Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate  
termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are  
MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.  
2. Add “-TK” suffix for 1,000 Tape and Reel option  
FN6426 Rev 0.00  
May 24, 2007  
Page 1 of 19  
1234567...19

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