Datasheet

MAX520/MAX521
Quad/Octal, 2-Wire Serial 8-Bit DACs
with Rail-to-Rail Outputs
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= 5V ±10%, V
REF_
= 4V, R
L
= ∞ (MAX520), R
L
= 10kΩ (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)
(Note 3)
30
CONDITIONS
Input Capacitance
16 24
R
IN
Input Resistance
REF4
MAX520_
MAX521_
Input Current
-60
V0V
DD
Input Voltage Range
dB
-70
µA±10
REF4
PD = 1
46
Code =
55 hex
(Note 1)
kΩ
812MAX520_
REF0–REF3
Channel-to-Channel Isolation
dB-70AC Feedthrough
120
Code =
FF hex
(Note 2)
pF
UNITSMIN TYP MAXSYMBOLPARAMETER
30MAX520_
REF0–REF3
15.8 16 16.2
V0V
DD
Full-Scale Output Voltage
kΩ
8.4 16.4
Output Resistance (Note 5)
MAX521_, OUT_ = 4V,
0mA to 2.5mA
0.25
15.6 16 16.4
MAX521_, OUT_ = 0V to V
DD
,
PD = 1
µA±10Output Leakage Current
V0.3V
DD
V
IL
Input Low Voltage
(Note 5) V0.05V
DD
V
HYST
Input Hysteresis
0V ≤ V
IN
≤ V
DD
µA±10I
IN
Input Current
V0.7V
DD
V
IH
Input High Voltage
MAX521BM, V
REF_
= V
DD
,
code = FF hex, 0µA to 500µA
LSB
2.0
Output Load Regulation
(Note 5) pF10C
IN
Input Capacitance
V0.8V
IL
Input Low Voltage
V
IN
= 0V to V
DD
µA±10I
IN
Input Leakage
V2.4V
IH
Input High Voltage
MAX520B
MAX521_C/E, V
REF_
= V
DD
,
code = FF hex, 0µA to 500µA
1.5
I
SINK
= 6mA 0.6
V
OL
Output Low Voltage
(Note 5) pF10C
OUT
Three-State Output Capacitance
V
IN
= 0V to V
DD
µA±10I
L
Three-State Leakage Current
I
SINK
= 3mA
V
0.4
REFERENCE INPUTS
DIGITAL INPUTS SCL, SDA
DIGITAL INPUTS AD0, AD1
DIGITAL OUTPUT SDA (Note 6)
(Note 4)
DAC OUTPUTS
MAX521_
MAX521_
MAX520A
T
A
= +25°C
T
A
= T
MIN
to T
MAX