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

TIMING CHARACTERISTICS

(VDD = +5.0V ±5%, TA = TMIN to TMAX, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX UNITS

Track/Hold Acquisition Time

tACQ CS = high (Note 7)

1.5

µs

MAX18_ _C/E

20

150

SCLK Fall to Output Data Valid tDO CLOAD = 100pF

ns

MAX18_ _M

20

200

CS Fall to Output Enable

CS Rise to Output Disable

tDV

CLOAD = 100pF

tTR

CLOAD = 100pF

100

ns

100

ns

SCLK Clock Frequency

fSCLK

5

MHz

SCLK Pulse Width High

SCLK Pulse Width Low

SCLK Low to CS Fall

Setup Time

tCH

tCL

tCSO

100

ns

100

ns

50

ns

CS Pulse Width

tCS

500

ns

Note 1: Tested at VDD = +5V.

Note 2: Relative accuracy is the deviation of the analog value at any code from its theoretical value after the full-scale range has

been calibrated.

Note 3: MAX187—internal reference, offset nulled; MAX189–external +4.096V reference, offset nulled. Excludes reference errors.

Note 4: Guaranteed by design. Not subject to production testing.

Note 5: External load should not change during conversion for specified ADC accuracy.

Note 6: DC test, measured at 4.75V and 5.25V only.

Note 7: To guarantee acquisition time, tACQ is the maximum time the device takes to acquire the signal, and is also the minimum

time needed for the signal to be acquired.

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