DS1867E-10+ Maxim Integrated Products, DS1867E-10+ Datasheet
![IC POT W/EEPROM DUAL 10K 20TSSOP](/photos/6/52/65243/175-20-tssop_sml.jpg)
DS1867E-10+
Specifications of DS1867E-10+
Related parts for DS1867E-10+
DS1867E-10+ Summary of contents
Page 1
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 ...
Page 2
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 ...
Page 3
DS1867 BLOCK DIAGRAM Figure DS1867 102199 ...
Page 4
TIMING DIAGFRAMS Figure 3-Wire Serial Interface General Overview DS1867 102199 ...
Page 5
I/O SHIFT REGISTER Figure 3 17-BIT I/O SHIFT REGISTER Transmission of data always begins with the stack select bit followed by the potentiometer-1 wiper position value and lastly the potentiometer-0 wiper position value (see Figure 2(a)). When wiper position data ...
Page 6
The C output of the DS1867 can be used to drive the DQ input of another DS1867. When connecting out multiple devices, the total number of bits sent is always 17 times the number of DS1867s in the daisy chain. ...
Page 7
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 ...
Page 8
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 ...
Page 9
DS1867 102199 ...
Page 10
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 ...
Page 11
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 ...
Page 12
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 ...
Page 13
ABSOLUTE AND RELATIVE LINEARITY Figure 10 DIGITAL OUTPUT LOAD SCHEMATIC Figure 11 Absolute and Relative Linearity (Normalized to 1 LSB DS1867 102199 ...
Page 14
TYPICAL SUPPLY CURRENT VS. SERIAL CLOCK RATE Figure 12 Serial Clock Rate (bits/second DS1867 102199 ...