MAX5480 Maxim, MAX5480 Datasheet - Page 5

• Manufacturer Part Number: MAX5480
• Description: 8-Bit Parallel DAC in QSOP-16 Package
• Manufacturer: Maxim

Table 2. Unipolar Binary Code Table
Figure 3. MAX5480 Functional Diagram
NOTE
REF
WR
CS
MSB
1 1 1 1 1 1 1 1
1 0 0 0 0 0 0 1
1 0 0 0 0 0 0 0
0 1 1 1 1 1 1 1
0 0 0 0 0 0 0 1
0 0 0 0 0 0 0 0
DIGITAL INPUT
D7 (MSB)
: 1
S8
20k
LSB
10k
D6
_______________________________________________________________________________________
S7
INTERFACE LOGIC
20k
LSB
2
10k
8
V
REF
D5
S6
20k
-V
-V
REF
ANALOG OUTPUT
REF
-V
-V
-V
-V
256
10k
REF
REF
REF
REF
1
128
256
D0 (LSB)
256
V
0
REF
255
256
129
127
256
S1
256
256
20k
1
10k
0
V
20k
REF
2
OUT2
OUT1
RFB
Table 3. Bipolar (Offset Binary) Code Table
Figure 4. Write-Cycle Timing Diagram
NOTE
NOTES:
1. FOR THE MAX5480, ALL INPUT SIGNAL RISE AND FALL TIMES ARE MEASURED
2. TIMING MEASUREMENT REFERENCE LEVEL IS (V
1 1 1 1 1 1 1 1
1 0 0 0 0 0 0 1
1 0 0 0 0 0 0 0
0 1 1 1 1 1 1 1
0 0 0 0 0 0 0 1
0 0 0 0 0 0 0 0
(D7–D0)
DATA IN
MSB
FROM 10% TO 90% OF V
DIGITAL INPUT
WR
8-Bit Parallel DAC in
CS
: 1
LSB
QSOP-16 Package
DD
LSB
2
. V
DD
7
t
CS
= +5V, t
V
t
V
V
WR
REF
IH
IL
r
t
DS
= t
DATA IN
STABLE
f
= 20ns.
ANALOG OUTPUT
IH
+V
+V
-V
-V
-V
128
+ V
REF
REF
REF
REF
1
REF
t
DH
IL
) / 2.
t
CH
0
V
REF
127
128
128
128
128
128
127
128
1
1
V
0
V
0
V
0
DD
DD
DD
5