MAX521 datasheet(3/20 Pages) MAXIM

3 / 20 page

Quad/Octal, 2-Wire Serial 8-Bit DACs

with Rail-to-Rail Outputs

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(VDD = 5V ±10%, VREF_ = 4V, RL = ∞ (MAX520), RL = 10kΩ (MAX521), CL = 0pF (MAX520), CL = 100pF (MAX521), TA = TMIN to TMAX,

unless otherwise noted. Typical values are at TA = +25°C)

(Note 3)

CONDITIONS

Input Capacitance

RIN

Input Resistance

REF4

MAX520_

MAX521_

Input Current

-60

0VDD

Input Voltage Range

-70

µA

±10

REF4

PD = 1

Code =

55 hex

(Note 1)

Ω

812

MAX520_

REF0–REF3

Channel-to-Channel Isolation

-70

AC Feedthrough

120

Code =

FF hex

(Note 2)

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

MAX520_

REF0–REF3

15.8

16.2

0VDD

Full-Scale Output Voltage

Ω

8.4

16.4

Output Resistance (Note 5)

MAX521_, OUT_ = 4V,

0mA to 2.5mA

0.25

15.6

16.4

MAX521_, OUT_ = 0V to VDD,

PD = 1

µA

±10

Output Leakage Current

0.3VDD

VIL

Input Low Voltage

(Note 5)

0.05VDD

VHYST

Input Hysteresis

≤ VIN ≤ VDD

µA

±10

IIN

Input Current

0.7VDD

VIH

Input High Voltage

MAX521BM, VREF_ = VDD,

code = FF hex, 0µA to 500µA

LSB

2.0

Output Load Regulation

(Note 5)

CIN

Input Capacitance

0.8

VIL

Input Low Voltage

VIN = 0V to VDD

µA

±10

IIN

Input Leakage

2.4

VIH

Input High Voltage

MAX520B

MAX521_C/E, VREF_ = VDD,

code = FF hex, 0µA to 500µA

1.5

ISINK = 6mA

0.6

VOL

Output Low Voltage

(Note 5)

COUT

Three-State Output Capacitance

VIN = 0V to VDD

µA

±10

Three-State Leakage Current

ISINK = 3mA

0.4

REFERENCE INPUTS

DIGITAL INPUTS SCL, SDA

DIGITAL INPUTS AD0, AD1

DIGITAL OUTPUT SDA (Note 6)

(Note 4)

DAC OUTPUTS

MAX521_

MAX520A

TA = +25°C

TA = TMIN to TMAX

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