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ISL22429 数据表(PDF) 1 Page - Intersil Corporation |
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ISL22429 数据表(HTML) 1 Page - Intersil Corporation |
1 / 13 page 1 ® FN6333.3 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, 2009. All Rights Reserved All other trademarks mentioned are the property of their respective owners. ISL22449 Quad Digitally Controlled Potentiometer (XDCP™) Low Noise, Low Power, SPI® Bus, 128 Taps, Wiper Only The ISL22449 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 DCP can be used as a voltage divider in a wide variety of applications including control, parameter adjustments, AC measurement and signal processing. Pinout Features • Four potentiometers in one package • 128 resistor taps • SPI serial interface • Non-volatile storage of wiper position • Wiper resistance: 70 Ω typical • Shutdown mode • Shutdown current 6.5µA 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 • 14 Lead TSSOP • Pb-free (RoHS compliant) ISL22449 (14 LD TSSOP) TOP VIEW RW0 SHDN VCC NC SDI CS NC 14 13 12 11 10 9 8 1 2 3 4 5 6 7 RW3 NC SCK SDO GND RW2 RW1 Ordering Information PART NUMBER (Note) PART MARKING RESISTANCE OPTION (k Ω) TEMP. RANGE (°C) PACKAGE (Pb-free) PKG. DWG. # ISL22449UFV14Z* 22449 UFVZ 50 -40 to +125 14 Ld TSSOP M14.173 ISL22449WFV14Z* 22449 WFVZ 10 -40 to +125 14 Ld TSSOP M14.173 *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 July 17, 2009 |
类似零件编号 - ISL22429 |
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类似说明 - ISL22429 |
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