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DS1802

Dallas Semiconducotr
Part Number DS1802
Manufacturer Dallas Semiconducotr
Description Dual Audio Taper Potentiometer
Published Sep 19, 2005
Detailed Description www.dalsemi.com DS1802 Dual Audio Taper Potentiometer With Pushbutton Control FEATURES § Ultra- low power consumption ...
Datasheet PDF File DS1802 PDF File

DS1802
DS1802

Overview
www.
dalsemi.
com DS1802 Dual Audio Taper Potentiometer With Pushbutton Control FEATURES § Ultra- low power consumption § Operates from 3V or 5V supplies § Two digitally controlled, 65-position potentiometers including mute § Logarithmic resistive characteristics (1 dB per step) § Zero-crossing detection eliminates noise caused by wiper movement § Digital or mechanical pushbutton wiper control § Serial port provides means for setting and reading both potentiometers wipers § 20-pin SOIC and 20-pin TSSOP for surface mount applications § Operating Temperature Range: -40°C to +85°C § Software and hardware mute § Resistance Available: 45 kΩ PIN ASSIGNMENT GND COUT CLK D RST ZCEN MODE W0 L0 H0 1 2 3 4 5 6 7 8 9 10 20 VCC 19 VU (UC1) 18 VD (DC1) 17 B0 (UC0) 16 B1 (DC0) 15 MUTE 14 AGND 13 H1 12 L1 11 W1 20-Pin DIP (300-mil) 20-Pin SOIC (300-mil) 20-Pin TSSOP (173-mil) See Mech.
Drawings Section PIN DESCRIPTION L0, L1 - Low End of Resistor H0, H1 - High End of Resistor W1,W2 - Wiper End of Resistor VCC - 3V/5V Power Supply Input RST D CLK MODE UC0, UC1 DC0, DC1 VU, VD B0, B1 GND MUTE AGND - Serial Port Reset Input - Serial Port Data Input - Serial Port Clock Input - Mode Select Input - Up Control Pushbutton Inputs - Down Control Pushbutton Inputs - Volume-Up/Volume-Down Inputs - Balance Pot-0, Pot-1 Inputs - Digital Ground - Mute - Analog Ground ZCEN COUT - Zero-Crossing Detect Input - Cascade Output 1 of 17 051401 DS1802 DESCRIPTION The DS1802 is a dual audio taper-potentiometer having logarithmic resistive characteristics over the device range.
Each potentiometer provides 65 wiper positions with a 1 dB increment per step and device mute.
The DS1802 has two methods of device control, which include contact closure (pushbutton) inputs and a 3-wire serial interface for wiper positioning.
The pushbutton control inputs provide a simple interface for device control without the need for a CPU.
While the 3-wire serial interface, using a CPU, provides the user th...


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