MAX1021 datasheet(5/40 Pages) MAXIM

5 / 40 page

10-Bit, Multichannel ADCs/DACs with FIFO,

Temperature Sensing, and GPIO Ports

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(AVDD = DVDD = 2.7V to 5.25V, external reference VREF = 2.5V, fCLK = 3.6MHz (50% duty cycle), TA = -40°C to +85°C, unless

otherwise noted. Typical values are at AVDD = DVDD = 3V, TA = +25°C. Outputs are unloaded, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

INTERNAL REFERENCE

REF1 Output Voltage

2.482

2.50

2.518

REF1 Temperature Coefficient

TCREF

±30

ppm/°C

REF1 Short-Circuit Current

VREF = 2.5V

0.39

EXTERNAL REFERENCE INPUT

REF1 Input Voltage Range

VREF1

REF modes 01, 10, and 11 (Note 4)

0.7

AVDD

REF1 Input Impedance

RREF1

100

130

DIGITAL INTERFACE

DIGITAL INPUTS (SCLK, DIN,

CS, CNVST, LDAC)

Input-Voltage High

VIH

DVDD = 2.7V to 5.25V

2.4

DVDD = 3.6V to 5.25V

0.8

Input-Voltage Low

VIL

DVDD = 2.7V to 3.6V

0.6

Input Leakage Current

0.01

±10

µA

Input Capacitance

CIN

DIGITAL OUTPUT (DOUT) (Note 14)

Output-Voltage Low

VOL

ISINK = 2mA

0.4

Output-Voltage High

VOH

ISOURCE = 2mA

DVDD -

0.5

Tri-State Leakage Current

±10

µA

Tri-State Output Capacitance

COUT

DIGITAL OUTPUT (

EOC) (Note 14)

Output-Voltage Low

VOL

ISINK = 2mA

0.4

Output-Voltage High

VOH

ISOURCE = 2mA

DVDD -

0.5

Tri-State Leakage Current

±10

µA

Tri-State Output Capacitance

COUT

DIGITAL OUTPUTS (GPIO_) (Note 14)

ISINK = 2mA

0.4

GPIOC_ Output-Voltage Low

ISINK = 4mA

0.8

GPIOC_ Output-Voltage High

ISOURCE = 2mA

DVDD -

0.5

GPIOA_ Output-Voltage Low

ISINK = 15mA

0.8

GPIOA_ Output-Voltage High

ISOURCE = 15mA

DVDD -

0.8

Tri-State Leakage Current

±10

µA

Tri-State Output Capacitance

COUT

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