DAC08A(RevC) View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

DAC08A
(Rev.:RevC)

8-Bit, High Speed, Multiplying D/A Converter (Universal Digital Logic Interface)

Analog Devices 

DAC08

10kΩ

15V

2

10V

VO

6

REF01* 5

MSB

LSB

B1 B2 B3 B4 B5 B6 B7 B8

5.000kΩ

IO

4

5.0kΩ

2

V+ –V CC VLC IO

4

*OR ADR01

+15V –15V

5.0kΩ

+15V

AD8671

B1 B2 B3 B4 B5 B6 B7 B8 EO

POS. FULL RANGE

EO ZERO SCALE

1 1 1 1 1 1 1 1 +4.960

1 0 0 0 1 0 0 0 0.000

NEG. FULL SCALE +1LSB 0 0 0 0 0 0 0 1 –4.960

NEG. FULL SCALE

0 0 0 0 0 0 0 0 –5.000

–15V

Figure 29. Offset Binary Operation

RL

IO

4

2

IO

AD8671

EO

0 TO –IFR × RL

255

IFR = 256 IREF

FOR COMPLEMENTARY OUTPUT (OPERATION AS A NEGATIVE LOGIC DAC).

CONNECT INVERTING INPUT OF OP AMP TO IO (PIN 2): CONNECT IO (PIN 4)

TO GROUND.

Figure 30. Positive Low Impedance Output Operation

4

IO

AD8671

EO

2

IO

RL

0 TO –IFR × RL

255

IFR = 256 IREF

FOR COMPLEMENTARY OUTPUT (OPERATION AS A NEGATIVE LOGIC DAC).

CONNECT NONINVERTING INPUT OF OP AMP TO IO (PIN 2): CONNECT IO (PIN 4)

TO GROUND.

Figure 31. Negative Low Impedance Output Operation

TTL, DTL,

VTH = 1.4V

VLC

1

VTH = VLC 1.4V

15V CMOS

15V VTH = 7.6V

ECL

CMOS, HTL, NMOS

V+

9.1kΩ

6.2kΩ

VLC

0.1µF

13kΩ

20kΩ

2N3904

"A"

3kΩ

39kΩ

2N3904

TO PIN 1

VLC

6.2kΩ

2N3904

"A"

3kΩ

20kΩ

2N3904

TO PIN 1

VLC

R3

400µA

–5.2V

TEMPERATURE COMPENSATING VLC CIRCUITS

Figure 32. Interfacing with Various Logic Families

Rev. C | Page 12 of 20

Share Link: