Rainbow-electronics DS3903 Instrukcja Użytkownika Pobierz pdf (Strona 6)

DS3903

Triple 128-Position Nonvolatile

Digital Potentiometer

6 ______________________________________________________________________

Typical Operating Characteristics (continued)

(VCC = 5.0V, 10kΩ plots apply to both pot0 and pot2, TA = +25°C unless otherwise noted.)

VOLTAGE-DIVIDER ABSOLUTE LINEARITY

vs. WIPER SETTING (90k

Ω)

DS3903 toc13

WIPER SETTING

ABSOLUTE LINEARTIY (LSB)

10080604020

0.04

0.08

0.12

0.16

0.20

0 120

VOLTAGE-DIVIDER RELATIVE LINEARITY

vs. WIPER SETTING (90k

Ω)

DS3903 toc12

WIPER SETTING

RELATIVE LINEARTIY (LSB)

10080604020

0.01

0.02

0.03

0.04

0.05

0 120

Pin Description

PIN NAME FUNCTION

1 SDA 2-Wire Serial Data. Input/output for 2-wire data.

2 SCL 2-Wire Serial Clock. Input for 2-wire clock.

3A0Address-Select Input. Determines device 2-wire address.

4WP

Write-Protect Input. Must be grounded to write to the potentiometer registers. An internal pullup locks

the potentiometer positions if this pin is not connected.

5, 16, 17

18, 19

N.C. No Connection

6, 8, 9

L0, L1, L2

Potentiometer Low Terminals. Voltages on these pins should remain between GND and +5.5V while

is above +2.7V. Low terminals can be at potentials above the wiper or high terminals.

7, 12, 14

W1, W2, W0

Potentiometer Wiper Terminal. Voltages on these pins should remain between GND and +5.5V while

is above +2.7V.

10 GND Ground Terminal

11, 13, 15

H2, H1, H0

Potentiometer High Terminals. Voltages on these pins should remain between GND and +5.5V while

is above +2.7V. High terminals can be at potentials below the low terminals.

20 V

Supply Voltage Terminal

1 2 3 4 5 6 7 8 9 10 11

Digital Potentiometer 1

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