MAX11628EEE datasheet(3/22 Pages) MAXIM

3 / 22 page

12-Bit, 300ksps ADCs

with FIFO and Internal Reference

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(VDD = +2.7V to +3.6V (MAX11627/MAX11629/MAX11633); VDD = +4.75V to +5.25V (MAX11626/MAX11628/MAX11632), fSAMPLE =

300kHz, fSCLK = 4.8MHz (50% duty cycle), VREF = 2.5V (MAX11627//MAX11629/MAX11633); VREF = 4.096V (MAX11626/MAX11628/

MAX11632), TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

CONVERSION RATE

External reference

0.8

Power-Up Time

tPU

Internal reference (Note 3)

µs

Acquisition Time

tACQ

0.6

µs

Internally clocked

3.5

Conversion Time

tCONV

Externally clocked (Note 4)

2.7

µs

Externally clocked conversion

0.1

4.8

External Clock Frequency

fSCLK

Data I/O

MHz

Aperture Delay

Aperture Jitter

< 50

ANALOG INPUT

Input Voltage Range

Unipolar

VREF

Input Leakage Current

VIN = VDD

±0.01

±1

µA

Input Capacitance

During acquisition time (Note 5)

INTERNAL REFERENCE

MAX11626/MAX11628/MAX11632

4.024

4.096

4.168

REF Output Voltage

MAX11627/MAX11629/MAX11633

2.48

2.50

2.52

MAX11626/MAX11628/MAX11632

±20

REF Temperature Coefficient

TCREF

MAX11627/MAX11629/MAX11633

±30

ppm/°C

Output Resistance

6.5

REF Output Noise

200

µVRMS

REF Power-Supply Rejection

PSRR

-70

EXTERNAL REFERENCE INPUT

REF Input Voltage Range

VREF

1.0

VDD+ 50mV

VREF = 2.5V (MAX11627/MAX11629/

MAX11633); VREF = 4.096V

(MAX11626/MAX11628/MAX11632),

fSAMPLE = 300ksps

100

REF Input Current

IREF

VREF = 2.5V (MAX11627/MAX11629/

MAX11633); VREF = 4.096V

(MAX11626/MAX11628/MAX11632),

fSAMPLE = 0

±0.1

±5

µA

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