wms7171 Winbond Electronics Corp America, wms7171 Datasheet
wms7171
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wms7171 Summary of contents
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WMS7170 / 7171 NON-VOLATILE DIGITAL POTENTIOMETERS WITH UP/DOWN (3-WIRE) INTERFACE, 10KOHM, 50KOHM, 100KOHM RESISTANCE 100 TAPS WITHOUT / WITH OUTPUT BUFFER PRELIMINARY DATASHEET Publication Release Date: July 2003 - 1 - Revision 1.0 ...
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... NV memory and control logics. The WMS7170 device can be configured as a two-terminal variable resistor or a three-terminal voltage divider without an output buffer, but the WMS7171 device, which has a built-in output buffer, can only be configured as a three-terminal voltage divider. Both devices can be used in a wide variety of applications ...
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... U /D Interface NV Memory V SS Control FIGURE 1 – WMS7170 BLOCK DIAGRAM (Rheostat/Divider Mode) INC Up/Down CS Serial U/D Interface NV Memory V SS Control FIGURE 2 – WMS7171 BLOCK DIAGRAM (Divider Mode) WMS7170 / 7171 NV Memory NVMEM0 NV Memory NVMEM0 Publication Release Date: July 2003 - ...
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TABLE OF CONTENTS 1. GENERAL DESCRIPTION.................................................................................................................. 2 2. FEATURES ......................................................................................................................................... 2 3. BLOCK DIAGRAM............................................................................................................................... 3 4. TABLE OF CONTENTS ...................................................................................................................... 4 5. PIN CONFIGURATION ....................................................................................................................... 5 6. PIN DESCRIPTION ............................................................................................................................. 6 7. FUNCTIONAL DESCRIPTION............................................................................................................ 7 7.1. Rheostat And Divider ...
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PIN CONFIGURATION 1 INC U 8-M SOP 1 INC 2 U 8-PDIP INC CS 7 U/D 2 ...
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PIN DESCRIPTION Pin Name Chip Select: When CS is LOW, the device is enabled. CS When CS is HIGH, the part is deselected and is in standby mode Up/Down Control: HIGH state enables the wiper to move towards the ...
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... The wiper movement to either direction is controlled by toggling the INC signal from HIGH to B LOW. Nevertheless, the WMS7171 can only be configured as a voltage divider and operate similarly as the WMS7170 device. The only difference is WMS7171 has an output buffer, but WMS7170 doesn’t have. Besides, the resistance cannot be directly measured in this configuration. ...
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ERIAL ATA NTERFACE The WMS7170/7171 device has a 3-wire Up/Down Serial Interface consisting INC and U/ D control signals. The key features of this interface include: Enabling the device x Determining the moving ...
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TIMING DIAGRAMS Conditions +2.7V to 5.5V [1] t PUD INC FIGURE 3 –WMS7170/1 TIMING DIAGRAM Note: [1] This only applies to the ...
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TABLE 10 – TIMING PARAMETERS PARAMETERS CS to INC Setup INC Setup INC Hold INC LOW Period INC HIGH Period INC Inactive to CS Inactive CS Deselect Time (NO STORE) CS Deselect Time (STORE) ...
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ABSOLUTE MAXIMUM RATINGS & OPERATING CONDITIONS TABLE 11 – ABSOLUTE MAXIMUM RATINGS (PACKAGED PARTS) Conditions Junction temperature Storage temperature Voltage applied to any pad Lead temperature (soldering – 10 seconds) V – TABLE 12 – OPERATING ...
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ELECTRICAL CHARACTERISTICS TABLE 12 – ELECTRICAL CHARACTERISTICS (Packaged parts) PARAMETERS SYMBOL Rheostat Mode Nominal Resistance [2] Different Non Linearity [2] Integral Non Linearity [1] Tempo [2] Wiper Resistance Wiper Current Divider Mode Resolution [2] Different Non Linearity [2] Integral ...
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... Standby Current Power Supply Rejection Ratio Notes: [1] Not subject to production test. [2] LSB = (R /V – LSB - 1 (if decrement); INL = (V i taps of the device. [3] WMS7171 only. [4] WMS7170 only. [5] Conditions [6] Only guarantee by design. [ end-to-end resistance. total MIN. TYP ...
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T C EST IRCUITS 1LSB= V+/ WMS71xx *Assume infinite input impedance Potentiometer divider nonlinearity error test circuit (INL, DNL) No Connection WMS71xx ...
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TYPICAL APPLICATION CIRCUITS Vin WMS71XX OUT (100- 100 R = Total resistance of potentiometer Wiper setting for WMS71XX FIGURE ...
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... WMS71xx Vout FIGURE 7 – WMS7171 TRIMMING VOLTAGE REFERENCE CS\ U/D\ INC\ FIGURE 8 – WMS7171 RF AMP CONTROL V+ V REFH 5V 0V GND C1 0.1uF CS U/ INC FILTER WMS71xx WINPOT - 16 - WMS7170 / 7171 V REF = 5.0v L1 CHOKE RF OUT Q1 RF POWER AMP C2 RF Input ...
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L C AYOUT ONSIDERATIONS Use a 0.1PF bypass capacitor as close as possible to the V performance. Often this can be done by placing the surface mount capacitor on the bottom side of the PC board, directly between the ...
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PACKAGE DRAWINGS AND DIMENSIONS T FIGURE 10: 8L 150MIL SOIC - 18 - WMS7170 / 7171 ...
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FIGURE 12: 8L 3MM MSOP - 20 - WMS7170 / 7171 ...
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... End-to-end Resistance: 010: 10Kohm 050: 50Kohm 100: 100Kohm Package: S: SOIC P: PDIP M: MSOP SOIC PDIP WMS7170010S WMS7170010P WMS7170050S WMS7170050P WMS7170100S WMS7170100P WMS7171010S WMS7171010P WMS7171050S WMS7171050P WMS7171100S WMS7171100P - 21 - WMS7170 / 7171 MSOP WMS7170010M WMS7170050M WMS7170100M WMS7171010M WMS7171050M WMS7171100M Publication Release Date: July 2003 Revision 1.0 ...
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VERSION HISTORY VERSION DATE 1.0 July 2003 Initial issue The contents of this document are provided only as a guide for the applications of Winbond products. Winbond makes no representation or warranties with respect to the accuracy or completeness ...