DS1807

DS1807 Addressable Dual Audio Taper Potentiometer www.dalsemi.com FEATURES § § § § § § § § § Operates from 3V or 5V Power Supplies Ultra-low power consumption Two digitally controlled, 65-position potentiometers Logarithmic resistor characteristics (1 dB per step) Zero-crossing detection eliminates noise caused by discrete wiper changes Addressable using 3-Chip Select Inputs Serial/Synchronous Bus Inputs Operating Temperature Range: - Industrial: -40° C to +85° C Standard Resistance Value: 45 kΩ PIN ASSIGNMENT GND A2 A1 A0 W0 L0 H0 1 2 3 4 5 6 7 14 13 12 11 10 9 8 VCC SCL SDA AGND H1 L1 W1 DS1807 14-Pin DIP (300-mil) DS1807E 14-Pin TSSOP (173-mil) GND A2 A1 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VCC NC SCL SDA AGND H1 L1 W1 PIN DESCIPTION L0, L1 H0, H1 W0,W1 VCC A0..A2 SDA SCL GND AGND NC Low End of Resistor High End of Resistor Wiper Terminal of Resistor 3V/5V Power Supply Input Chip Select Inputs Serial Data I/O Serial Clock Input Ground Analog Ground No connection NC A0 W0 L0 H0 DS1807S 16-Pin SOIC (300-mil) See mech. Drawings Section DESCRIPTION The DS1807 Addressable Dual Audio Taper Potentiometer is a dual audio taper potentiometer having a logarithmic resistive characteristic. Each potentiometer has a total of 65 wiper positions including the mute position. Adjacent wiper positions are separated by 1 dB giving a total attenuation range of 64 dB. When the wipers are in the mute position, attenuation in excess of 90 dB is achieved. The DS1807 also provides a z...