MAX1028 datasheet(4/22 Pages) MAXIM

Part #	MAX1028

Description	10-Bit 300ksps ADCs with FIFO, Temp Sensor, Internal Reference

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Manufacturer	MAXIM [Maxim Integrated Products]

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10-Bit 300ksps ADCs with FIFO,

Temp Sensor, Internal Reference

4

_______________________________________________________________________________________

Note 1: Tested at VDD = +5V, unipolar input mode.

Note 2: Offset nulled.

Note 3: Time for reference to power up and settle to within 1 LSB.

Note 4: Conversion time is defined as the number of clock cycles multiplied by the clock period; clock has 50% duty cycle.

Note 5: The operational input voltage range for each individual input of a differentially configured pair is from GND to VDD. The oper-

ational input voltage difference is from -VREF / 2 to +VREF / 2.

Note 6: See Figure 3 (Input Equivalent Circuit) and the

Sampling Error vs. Source Impedance curve in the Typical Operating

Characteristics section.

Note 7: Fast automated test, excludes self-heating effects.

Note 8: Supply current is specified depending on whether an internal or external reference is used for voltage conversions.

Temperature measurements always use the internal reference.

ELECTRICAL CHARACTERISTICS (continued)

(VDD = +5V ±5%, fSAMPLE = 300kHz, fSCLK = 4.8MHz (50% duty cycle), VREF = 4.096V, TA = TMIN to TMAX, unless otherwise noted.

Typical values are at TA = +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

DIGITAL INPUTS (SCLK, DIN,

CS, CNVST)

Input Voltage Low

VIL

0.8

V

Input Voltage High

VIH

2.0

V

Input Hysteresis

VHYST

200

mV

Input Leakage Current

IIN

VIN = 0 or VDD

±0.01

±1.0

μA

Input Capacitance

CIN

15

pF

DIGITAL OUTPUTS (DOUT, EOC)

ISINK = 2mA

0.4

Output Voltage Low

VOL

ISINK = 4mA

0.8

V

Output Voltage High

VOH

ISOURCE = 1.5mA

VDD - 0.5

V

Tri-State Leakage Current

IL

CS = VDD

±0.05

±1

μA

Tri-State Output Capacitance

COUT

CS = VDD

15

pF

POWER REQUIREMENTS

Supply Voltage

VDD

4.75

5.25

V

During temp sense

2400

3100

fSAMPLE = 300ksps

1950

2300

fSAMPLE = 0, REF on

1000

1350

Internal

reference

Shutdown

0.2

5

During temp sense

1650

2300

fSAMPLE = 300ksps

1250

1500

Supply Current (Note 8)

IDD

External

reference

Shutdown

0.2

5

μA

Power-Supply Rejection

PSR

VDD = 4.75V to 5.25V; full-scale input

±0.2

±1

mV

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