ADC122S051 Timing Specifications

The following specifications apply for V

kSPS, C

Symbol

Parameter

Conditions

Typical

Limits

(Note 7)

Units

t

CSU

Setup Time SCLK High to CS Falling Edge

(Note 10)

V

−3.5

10

ns (min)

V

−0.5

t

CLH

Hold time SCLK Low to CS Falling Edge

(Note 10)

V

+4.5

10

ns (min)

V

+1.5

t

EN

Delay from CS Until DOUT active

V

+4

30

ns

(max)

V

+2

t

ACC

Data Access Time after SCLK Falling Edge

V

+14.5

30

ns

(max)

V

+13

t

SU

Data Setup Time Prior to SCLK Rising Edge

+3

10

ns (min)

t

H

Data Valid SCLK Hold Time

+3

10

ns (min)

t

CH

SCLK High Pulse Width

0.5 x

t

SCLK

0.3 x

t

SCLK

ns (min)

t

CL

SCLK Low Pulse Width

0.5 x

t

SCLK

0.3 x

t

SCLK

ns (min)

t

DIS

CS Rising Edge to DOUT High-Impedance

Output Falling

V

1.8

20

ns

(max)

V

1.3

Output Rising

V

1.0

V

1.0

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is

functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed

specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test

conditions.

Note 2: All voltages are measured with respect to GND = 0V, unless otherwise specified.

mA maximum package input current rating limits the number of pins that can safely exceed the power supplies with an input current of 10 mA to two. The Absolute

junction-to-ambient thermal resistance (

for maximum power dissipation listed above will be reached only when the device is operated in a severe fault condition (e.g. when input or output pins are driven

beyond the power supply voltages, or the power supply polarity is reversed). Obviously, such conditions should always be avoided.

Note 5: Human body model is 100 pF capacitor discharged through a 1.5 k

Ω resistor. Machine model is 220 pF discharged through zero ohms

Note 6: Reflow temperature profiles are different for lead-free and non-lead-free packages.

Note 7: Tested limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).

Note 8: This is the frequency range over which the electrical performance is guaranteed. The device is functional over a wider range which is specified under

Operating Ratings.

Note 9: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.

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