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X9315ZMI-2.7 Datasheet(PDF) 1 Page - Xicor Inc. |
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X9315ZMI-2.7 Datasheet(HTML) 1 Page - Xicor Inc. |
1 / 13 page 6732-2.0 5/30/97 T1/C0/D0 SH 1 Characteristics subject to change without notice APPLICATION NOTE A V A I L A B L E Low Noise, Low Power, 32 Taps X9315 E2POTTM Nonvolatile Digital Potentiometer FEATURES • Low Power CMOS —VCC = 2.7V to 5.5V, Single Supply —Active Current, 50 µA (Increment) max —Active Current, 400 µA (Store) Max —Standby Current, 1 µA Max • Low Noise • 31 Resistive Elements —Temperature Compensated — ± 20% End to End Resistance Range —VSS to VCC Range • 32 Wiper Tap Points —Wiper Positioned via Three-Wire Interface —Similar to TTL Up/Down Counter —Wiper Position Stored in Nonvolatile Memory and Recalled on Power-Up • 100 Year Wiper Position Data Retention • X9315Z = 1K Ω • X9315W = 10K Ω • Packages —8-Lead SOIC —8-Lead MSOP —8-Pin DIP DESCRIPTION The Xicor X9315 is a solid state "micropower" nonvol- atile potentiometer and is ideal for digitally controlled resistance trimming. The X9315 is a resistor array composed of 31 resistive elements. Between each element and at either end are tap points accessible to the wiper element. The posi- tion of the wiper element is controlled by the CS, U/D, and INC inputs. The position of the wiper can be stored in nonvolatile memory and then be recalled upon a sub- sequent power-up operation. The resolution of the X9315 is equal to the maximum resistance value divided by 31. As an example, for the X9315W (10K Ω) each tap point represents 323Ω. All Xicor nonvolatile digital potentiometers are de- signed and tested for applications requiring extended endurance and data retention. FUNCTIONAL DIAGRAM 5-BIT UP/DOWN COUNTER 5-BIT NONVOLATILE MEMORY STOREAND RECALL CONTROL CIRCUITRY ONE OF THIRTY- TWO WIPER POSITION DECODER RESISTOR ARRAY VL VW VH U/D INC CS CMOS SWITCH 6732 FM1 E2POT™ is a trademark of Xicor, Inc. AN104 |
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