DS1867S-050 Dallas Semiconductor, DS1867S-050 Datasheet
DS1867S-050
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DS1867S-050 Summary of contents
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FEATURES § Nonvolatile version of the popular DS1267 § Low power consumption, quiet, pumpless design § Operates from single supplies § Two digitally controlled, 256-position potentiometers § Wiper position is maintained in the absence of power ...
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DESCRIPTION The DS1867 Dual Digital Potentiometer with EEPROM is the nonvolatile version of the popular DS1267 Dual Digital Potentiometer. The DS1867 consists of two digitally controlled potentiometers having 256- position wiper settings. Wiper position is maintained in the absence of ...
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DS1867 BLOCK DIAGRAM Figure DS1867 102199 ...
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TIMING DIAGFRAMS Figure 3-Wire Serial Interface General Overview DS1867 102199 ...
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... CASCADE OPERATION A feature of the DS1867 is the ability to control multiple devices from a single processor. Multiple DS1867s can be linked or daisy-chained as shown in Figure data bit is entered into the I/O shift register of the DS1867 it will appear at the C signal input should be taken to a low state to prevent any inadvertent ...
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... When the CLK input transitions low to high, bit 17 is loaded into the first position of the I/O shift register and bit 16 becomes present on C bits (or 17 times the number of DS1867s in the daisy chain), the data has shifted completely around and back to its original position. When same as before the read occurred) is loaded into the wiper-0, wiper-1, and stack select bit I/O register ...
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POWER-DOWN EEPROM TIMING REQUIREMENTS Figure 6 TYPICAL APPLICATION CONFIGURATIONS Figures 7 and 8 show two typical application configurations for the DS1867. By connecting the wiper terminal of the part to a high impedance load, the effects of the wiper resistance ...
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FIXED GAIN ATTENUATOR Figure 8 ABSOLUTE AND RELATIVE LINEARITY Absolute linearity is defined as the difference between the actual measured output voltage and the expected output voltage. Figure 9 presents the test circuit used to measure absolute linearity. Absolute linearity ...
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DS1867 102199 ...
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ABSOLUTE MAXIMUM RATINGS* Voltage on Any Pin Relative to Ground (V Voltage on Resistor Pins when V Operating Temperature Storage Temperature Soldering Temperature * This is a stress rating only and functional operation of the device at these or any ...
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ANALOG RESISTOR CHARACTERISTICS PARAMETER End-to-End Resistor Tolerance Absolute Linearity Relative Linearity -3 dB Cutoff Frequency Noise Figure Temperature Coefficient CAPACITANCE PARAMETER Input Capacitance Output Capacitance AC ELECTRICAL CHARACTERISTICS PARAMETER CLK Frequency Width of CLK Pulse Data Setup Time Data Hold ...
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NOTES: 1. All voltages are referenced to ground. 2. Resistor inputs cannot exceed the substrate bias voltage Capacitance values apply Absolute linearity is used to determine wiper voltage versus expected voltage as determined by ...
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ABSOLUTE AND RELATIVE LINEARITY Figure 10 DIGITAL OUTPUT LOAD SCHEMATIC Figure 11 Absolute and Relative Linearity (Normalized to 1 LSB DS1867 102199 ...
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TYPICAL SUPPLY CURRENT VS. SERIAL CLOCK RATE Figure 12 Serial Clock Rate (bits/second DS1867 102199 ...