isl22414 Intersil Corporation, isl22414 Datasheet
isl22414
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isl22414 Summary of contents
Page 1
... The ISL22414 also has 14 General Purpose non-volatile registers that can be used as storage of lookup table for multiple wiper position or any other valuable information. The ISL22414 features a dual supply, that is beneficial for applications requiring a bipolar range for DCP terminals between V- and VCC. The DCP can be used as three-terminal potentiometer or as ...
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... SCK 2 SDO 3 SDI GND VCC 2 ISL22414 VCC POWER UP INTERFACE, SPI CONTROL WR AND VOLATILE STATUS REGISTER LOGIC AND WIPER CONTROL CIRCUITRY NON-VOLATILE REGISTERS GND SPI interface clock input Data Output of the SPI serial interface Data Input of the SPI serial interface ...
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... Ratiometric temperature coefficient DCP register set to 80 hex V (Notes 10, 18) f -3dB cut off frequency cutoff (Note 18) 3 ISL22414 Thermal Information Thermal Resistance (Typical, Note 3) 10 Lead MSOP 120 +0.3 CC Maximum Junction Temperature (Plastic Package .+150°C Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below http://www ...
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... V Supply Current CC2 CC (non-volatile write/read Supply Current V-2 (non-volatile write/read) V- Supply Current (non-volatile write/read Current (standby ISL22414 TEST CONDITIONS and R with R not connected, or between option U, T option W option U, T option W option U, T option TEST CONDITIONS V = 5.5V 5.5V 5MHz; (for SPI ...
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... V SCK, SDI, and CS input buffer HIGH IH voltage Hysteresis SCK, SDI, and CS input buffer hysteresis V SDO output buffer LOW voltage OL 5 ISL22414 TEST CONDITIONS V- = -5.5V +5.5V @ +85°C, SPI interface CC in standby state V- = -5.5V +5.5V @ +125°C, SPI CC interface in standby state V- = -2.25V +2.25V @ +85°C, SPI ...
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... Higher value pull-up can be used at lower data rates. pu 18. Limits should be considered typical and are not production tested. 19. Parts are 100% tested at +25°C. Over temperature limits established by characterization and are not production tested. 6 ISL22414 TEST CONDITIONS Maximum is determined maximum bus load Cb = 30pF, f ...
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... SU H MSB SDI HIGH IMPEDANCE SDO Output Timing CS SCK t SO MSB SDO t V ADDR SDI XDCP Timing (for All Load Instructions) CS SCK MSB SDI V W HIGH IMPEDANCE SDO 7 ISL22414 10pF t CYC ... ... ... t HO ... ... ... LAG LSB t ...
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... TAP POSITION (DECIMAL) FIGURE 3. DNL vs TAP POSITION IN VOLTAGE DIVIDER MODE FOR 10kΩ (W) 2.0 1.6 1.2 0.8 50k V = 2.25V CC 0 TEMPERATURE (ºC) FIGURE 5. ZS ERROR vs TEMPERATURE 8 ISL22414 2 +125ºC 1.5 1 +25ºC 0.5 -0 -40ºC -1.0 -1.5 -2.0 200 250 FIGURE 2. STANDBY I 0. +25ºC 0.25 -0.25 -0.50 200 250 FIGURE 4. INL vs TAP POSITION IN VOLTAGE DIVIDER ...
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... FIGURE 9. END TO END R % CHANGE vs TOTAL TEMPERATURE 500 10k 400 300 200 100 116 TAP POSITION (DECIMAL) FIGURE 11. TC FOR RHEOSTAT MODE IN ppm 9 ISL22414 (Continued) 2 +25ºC 1.5 1.0 0.5 -0.5 200 250 FIGURE 8. INL vs TAP POSITION IN RHEOSTAT MODE FOR 200 10k 160 120 80 40 ...
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... CS LOW enables the ISL22414, placing it in the active power mode. A HIGH to LOW transition required prior to the start of any operation after power up. When CS is HIGH, the ISL22414 is deselected and the SDO pin is at high impedance, and (unless an internal write cycle is underway) the device will be in the standby state. ...
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... RW and RL increases monotonically, while the resistance between RH and RW decreases monotonically. While the ISL22414 is being powered up, the WR is reset to 80h (128 decimal), which locates RW roughly at the center between RL and RH. After the power supply voltage becomes large enough for reliable non-volatile memory reading, the WR will be reloaded with the value stored in a non-volatile Initial Value Register (IVR) ...
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... SDO 12 ISL22414 Write Operation A Write operation to the ISL22414 is a two or more bytes operation. It requires first, the CS transition from HIGH to LOW. Then host send a valid Instruction Byte, followed by one or more Data Bytes to SDI pin. The host terminates the write operation by pulling the CS pin from LOW to HIGH. ...
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... WR as the IVR. Reading from the IVR will not change the WR, if its contents are different. Daisy Chain Configuration When application needs more then one ISL22414, it can communicate with all of them without additional CS lines by daisy chaining the DCPs as shown on Figure 18. In Daisy ...
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... SDI SDO 0 SDO 1 SDO 2 FIGURE 19. DAISY CHAIN WRITE SEQUENCE DCP SCK SDI INSTRUCTION SDO FIGURE 20. TWO BYTE OPERATION 14 ISL22414 N DCP IN A CHAIN DCP1 DCP2 CS CS SCK SCK SDI SDO SDI SDO 16 CLKS ...
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... CS SCK 16 CLKS 16 CLKS SDI RD DCP2 RD DCP1 SDO FIGURE 21. DAISY CHAIN READ SEQUENCE DCP 15 ISL22414 16 CLKS 16 CLKS NOP RD DCP0 DCP2 OUT 16 CLKS 16 CLKS NOP NOP DCP0 OUT DCP1 OUT FN6424.0 July 17, 2007 ...
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... However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 16 ISL22414 M10.118 (JEDEC MO-187BA) 10 LEAD MINI SMALL OUTLINE PLASTIC PACKAGE SYMBOL ...