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ISL22446WFV20Z Scheda tecnica(PDF) 1 Page - Intersil Corporation |
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ISL22446WFV20Z Scheda tecnica(HTML) 1 Page - Intersil Corporation |
1 / 15 page 1 ® FN6181.2 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) and XDCP are registered trademarks of Intersil Americas Inc. Copyright Intersil Americas Inc. 2006, 2008, 2009. All Rights Reserved All other trademarks mentioned are the property of their respective owners. ISL22446 Quad Digitally Controlled Potentiometer (XDCP™) Low Noise, Low Power, SPI™ Bus, 128 Taps The ISL22446 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 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 DCPs 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. Features • Four potentiometers in one package • 128 resistor taps • SPI serial interface • Non-volatile storage of wiper position • Wiper resistance: 70 Ω typical @ VCC = 3.3V • Shutdown mode • Shutdown current 5µA max • Power supply: 2.7V to 5.5V •50k Ω 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 and 20 Ld TQFN package • Pb-free (RoHS compliant) Pinouts ISL22446 (20 LD TSSOP) TOP VIEW ISL22446 (20 LD TQFN) TOP VIEW RW0 RL0 RH0 SHDN VCC SDI CS RH1 RL1 RW1 20 19 18 17 16 15 14 13 12 11 1 2 3 4 5 6 7 8 9 10 RH3 RL3 RW3 NC SCK SDO GND RW2 RL2 RH2 1 2 3 4 6 18 20 19 RL3 RH2 RW1 8 17 9 RH1 RW0 RL1 15 14 13 12 7 RL0 RH3 16 5 RW3 RL2 11 10 O Ordering Information PART NUMBER (Note) PART MARKING RESISTANCE OPTION (k Ω) TEMP. RANGE (°C) PACKAGE (Pb-free) PKG. DWG. # ISL22446UFV20Z* 22446 UFVZ 50 -40 to +125 20 Ld TSSOP M20.173 ISL22446UFRT20Z* 224 46UFZ 50 -40 to +125 20 Ld 4x4 TQFN L20.4x4A ISL22446WFV20Z* 22446 WFVZ 10 -40 to +125 20 Ld TSSOP M20.173 ISL22446WFRT20Z* 224 46WFZ 10 -40 to +125 20 Ld 4x4 TQFN L20.4x4A *Add “-TK” suffix for tape and reel. Please refer to TB347 for details on reel specifications. NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is 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. Data Sheet September 9, 2009 |
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