DS1801S/TR Просмотр технического описания (PDF) - Dallas Semiconductor -> Maxim Integrated

Номер в каталоге

Компоненты Описание

производитель

DS1801S/TR

Dual Audio Taper Potentiometer

Dallas Semiconductor -> Maxim Integrated 

DS1801

OPERATION

The DS1801 provides two 65-position potentiometers per package, each having a logarithmic resistive

characteristic as shown in Table 1. The DS1801 is controlled by a 3-wire serial interface. The 3-wire

serial interface is designed for CPU-controlled applications and allows the potentiometer’s exact wiper

position to be read or written. The DS1801 design supports daisy-chaining for multi-device

environments.

Figure 1 presents a block diagram of the DS1801. As shown, the inputs from the 3-wire serial interface

drive a command/control unit. The command/control unit interprets these inputs for control of the two

potentiometers.

On power-up, the serial port is stable and active within 10 microseconds. The wiper position on power-up

will be at position 63, the low end of the potentiometer. Position 64 is the mute level.

RESISTANCE CHARACTERISTICS Table 1

POSITION

OUTPUT LEVEL (dB)

0

0

1

-1

2

-2

3

-3

4

-4

5

-5

63

-63

64(mute)

<-90

DS1801 BLOCK DIAGRAM Figure 1

2 of 10

Share Link: