MAX189BCWE Ver la hoja de datos (PDF) - Maxim Integrated

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MAX189BCWE

+5V, Low-Power, 12-Bit Serial ADCs

Maxim Integrated 

+5V, Low-Power, 12-Bit Serial ADCs

ELECTRICAL CHARACTERISTICS (continued)

(VDD = +5V ±5%; GND = 0V; unipolar input mode; 75ksps, fCLK = 4.0MHz, external clock (50% duty cycle); MAX187—internal

reference: VREF = 4.096V, 4.7µF capacitor at REF pin, or MAX189—external reference: VREF = 4.096V applied to REF pin, 4.7µF

capacitor at REF pin; TA = TMIN to TMAX; unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX UNITS

CONVERSION RATE

Conversion Time

tCONV

5.5

8.5

µs

Track/Hold Acquisition Time

tACQ

1.5

µs

Throughput Rate

External clock, 4MHz, 13 clocks

75

ksps

Aperture Delay

tAPR

Aperture Jitter

10

ns

<50

ps

ANALOG INPUT

Input Voltage Range

Input Capacitance (Note 4)

0 to VREF

V

16

pF

INTERNAL REFERENCE (MAX187 only, reference buffer enabled)

REF Output Voltage

VREF

TA = +25°C

TA = TMIN to TMAX

MAX187_C

MAX187_E

MAX187_M

4.076 4.096 4.116

4.060

4.050

4.132

4.140

V

4.040

4.150

REF Short-Circuit Current

30

mA

REF Tempco

MAX187AC/BC

MAX187AE/BE

MAX187AM/BM

±30

±50

±30

±60

ppm/°C

±30

±80

Load Regulation (Note 5)

MAX187C

0mA to 0.6mA output load

±30

1

mV

EXTERNAL REFERENCE AT REF (Buffer disabled, VREF = 4.096V)

Input Voltage Range

Input Current

Input Resistance

Shutdown REF Input Current

2.50

VDD + 50mV

V

200

350

µA

12

20

kΩ

1.5

10

µA

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