![](http://datasheet.mmic.net.cn/370000/MAX521AEAG_datasheet_16713213/MAX521AEAG_3.png)
M
Quad/Oc tal, 2-Wire S erial 8-Bit DACs
with Rail-to-Rail Outputs
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= 5V ±10%, V
REF_
= 4V, R
L
=
∞
(MAX520), R
L
= 10k
(MAX521), C
L
= 0pF (MAX520), C
L
= 100pF (MAX521), T
A
= T
MIN
to T
MAX
,
unless otherwise noted. Typical values are at T
A
= +25°C)
SYMBOL
PARAMETER
REFERENCE INPUTS
(Note 3)
30
-70
CONDITIONS
Input Capacitance
16
24
R
IN
Input Resistance
REF4
REF0–REF3
MAX520_
MAX521_
Input Current
-60
-70
V
0
8
V
DD
Input Voltage Range
dB
μA
±10
REF4
REF0–REF3
PD = 1
4
6
Code =
55 hex
(Note 1)
k
12
MAX520_
Channel-to-Channel Isolation
dB
AC Feedthrough
DAC OUTPUTS
120
Code =
FF hex
(Note 2)
pF
UNITS
MIN
TYP
MAX
30
MAX520_
15.8
15.6
16
16
16.2
16.4
V
0
V
DD
Full-Scale Output Voltage
k
8.4
16.4
Output Resistance (Note 5)
MAX521_, OUT_ = 4V,
0mA to 2.5mA
0.25
MAX521_, OUT_ = 0V to V
DD
,
PD = 1
μA
±10
Output Leakage Current
V
0.3V
DD
±10
V
IL
I
IN
Input Low Voltage
Input Current
(Note 5)
(Note 5)
V
pF
0.05V
DD
V
HYST
C
IN
Input Hysteresis
Input Capacitance
DIGITAL INPUTS AD0, AD1
0V
≤
V
IN
≤
V
DD
μA
V
0.7V
DD
V
IH
Input High Voltage
MAX521BM, V
REF_
= V
DD
,
code = FF hex, 0μA to 500μA
LSB
2.0
Output Load Regulation
10
V
0.8
±10
V
IL
I
IN
Input Low Voltage
Input Leakage
DIGITAL OUTPUT SDA
(Note 6)
V
IN
= 0V to V
DD
μA
V
2.4
V
IH
Input High Voltage
MAX520B
MAX521_C/E, V
REF_
= V
DD
,
code = FF hex, 0μA to 500μA
1.5
I
SINK
= 6mA
V
IN
= 0V to V
DD
0.6
±10
V
OL
Output Low Voltage
(Note 5)
pF
10
C
OUT
Three-State Output Capacitance
μA
I
L
Three-State Leakage Current
I
SINK
= 3mA
V
0.4
DIGITAL INPUTS SCL, SDA
(Note 4)
MAX521_
MAX521_
MAX520A
T
A
= +25°C
T
A
= T
MIN
to T
MAX