Datasheet

MAX520/MAX521
Quad/Octal, 2-Wire Serial 8-Bit DACs
with Rail-to-Rail Outputs
_______________________________________________________________________________________ 9
______________________________________________________________Pin Description
SCL
SDA
t
LOW
t
HIGH
t
F
t
R
t
HD
,
STA
t
HD
,
DAT
t
HD
,
STA
t
SU
,
DAT
t
SU
,
STA
t
BUF
t
SU
,
STO
START CONDITIONSTOP CONDITIONREPEATED START CONDITIONSTART CONDITION
Figure 1. 2-Wire Serial-Interface Timing Diagram
DIP SO/SSOPDIP/SO SSOP
PIN
MAX521
NAME
MAX520
7
8
9
10
11
4
—
5
6
3
2
1
8
10
11
12
13
4
7, 9, 16, 20
5
6
3
2
1
12
13
14
15
14
15
17
18
16 19
17
18
19
20
21
22
23
24
Serial Clock InputSCL7
Serial Data InputSDA8
DAC4 Voltage OutputOUT4—
DAC5 Voltage OutputOUT5—
DAC6 Voltage OutputOUT6—
Reference Voltage Input for DAC0REF04
No Connect—not internally connectedN.C.—
Digital GroundDGND6
Analog GroundAGND5
Reference Voltage Input for DAC1REF13
DAC0 Voltage OutputOUT02
DAC1 Voltage OutputOUT11
9
10
—
—
—
5
4, 7, 14, 17
8
6
3
2
1
DAC7 Voltage OutputOUT7—
Address Input 0; sets IC’s slave addressAD09
Address Input 1; sets IC’s slave addressAD110
Power Supply, +5VV
DD
12
—
11
12
15
Reference Voltage Input for DACs 4, 5, 6, and 7REF4— —
Reference Voltage Input for DAC3REF313
Reference Voltage Input for DAC2REF214
DAC3 Voltage OutputOUT315
DAC2 Voltage OutputOUT216
16
18
19
20
FUNCTION
— — Address Input 2; sets IC’s slave addressAD211 13