+3V/+5V, 12-Bit, Serial, Multiplying DACs

in 10-Pin µMAX Package

_______________________________________________________________________________________

7

______________________________________________________________Pin Description

PIN

NAME

1

1

OUT

—

2

AGND

2

3

GND

6

7

SCLK

5

6

DIN

4

5

LOAD

3

4

8

10

RFB

7

9

REF

—

8

CLR

Feedback Resistor

Reference Input

Serial-Clock Input. The serial input data is clocked in on SCLK’s rising edge.

Serial-Data Input

Active-Low Load DAC Input. Driving this asynchronous input low transfers the contents

of the input register to the DAC register.

Supply Voltage

Digital Ground. Also Analog Ground for DIP package.

Analog Ground

DAC Current Output

FUNCTION

µMAX

DIP

D1

D9

2R

R

R

R

R

2R

2R

2R

2R

2R

AGND

OUT

RFB

D10

D11

(MSB)

DO

(LSB)

Figure 1. MAX551/MAX552 Simplified Circuit