Digital Potentiometer, 50Kohm, 129Steps, Quad, Tssop-20; End To End Resistance:50Kohm; No. Of Pots:Quad; Control Interface:I2C; Track Taper:Linear; Resistance Tolerance:± 20%; Supply Voltage Min:2.7V; Supply Voltage Max:5.5V Rohs Compliant: Yes |Microchip Technology MCP4441-503E/ST