WM5620LIN datasheet(11/14 Pages) WOLFSON

部品番号	WM5620LIN

部品情報	3 & 5V Quad 8-Bit Voltage Output DAC with Serial Interface

PDF	14 Pages

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メーカー	WOLFSON [Wolfson Microelectronics plc]

ホームページ	http://www.wolfsonmicro.com

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11 / 14 page

Wolfson Microelectronics

WM5620L, WM5620

Serial Input Decode

Functional Description (Continued)

DAC

DACA

DACB

DACC

DACD

Output Voltage

GND

(1/256) x Ref (1 + RNG)

•

(127/256) x Ref (1 + RNG)

(128/256) x Ref (1 + RNG)

•

(255/256) x Ref (1 + RNG)

Using these inputs individual DACs can be updated using

one 11 bit serial input word and the LOAD pin. Using both

LOAD and LDAC, all or selected DACs can be updated

after an appropriate number of data words have been

inputted. Figures 3 & 4 illustrate operation with the 8 clock

pulses available from some microprocessors. If the data

input is interrupted in this way the clock input must be

held low during the break in clock pulses.

The RNG bit controls the DAC output range. When RNG

= 0 the output is between Vref(A,B,C,D) and GND and

when RNG = 1 the range is between 2 x Vref (A,B,C,D)

and GND.

WM5620LIN データシート(PDF) 11 Page - Wolfson Microelectronics plc