ADC12441CMJ datasheet(4/14 Pages) NSC

4 / 14 page

Digital and DC Electrical Characteristics

The following specifications apply for DVCC e AVCC ea50V Vb eb50V VREF ea50V and fCLK e 20 MHz unless

otherwise specified Boldface limits apply for TA e TJ e TMIN to TMAX all other limits TA e TJ e 25 C

(Notes 6 and 7) (Continued)

Symbol

Parameter

Conditions

Typical

Limit

Units

(Note 9)

(Notes 10 19)

(Limits)

IOUT

TRI-STATE Output Leakage

VOUT e 0V

001

A (max)

Current

VOUT e 5V

001

A (max)

ISOURCE

Output Source Current

VOUT e 0V

mA (min)

ISINK

Output Sink Current

VOUT e 5V

mA (min)

DICC

DVCC Supply Current

fCLK e 2 MHz CS e ‘‘1’’

mA (max)

AICC

AVCC Supply Current

fCLK e 2 MHz CS e ‘‘1’’

mA (max)

Vb Supply Current

fCLK e 2 MHz CS e ‘‘1’’

mA (max)

AC Electrical Characteristics

The following specifications apply for DVCC e AVCC ea50V Vb eb50V tr e tf e 20 ns unless otherwise specified

Boldface limits apply for TA e TJ e TMIN to TMAX all other limits TA e TJ e 25 C (Notes 6 and 7)

Symbol

Parameter

Conditions

Typical

Limit

Units

(Note 9)

(Notes 10 19)

(Limits)

fCLK

Clock Frequency

MHz (min)

MHz (max)

Clock Duty Cycle

% (min)

% (max)

Conversion Time

27(1fCLK)

27(1fCLK) a 300 ns

(max)

fCLKe 20 MHz

135

Acquisition Time

RSOURCE e 50X

7(1fCLK)

7(1fCLK) a 300 ns

(max)

(Note 15)

fCLK e 20 MHz

Auto Zero Time

26(1fCLK)

(max)

fCLK e 20 MHz

tCAL

Calibration Time

1396(1fCLK)

max

fCLK e 20 MHz

698

706

s (max)

tW(CAL)L

Calibration Pulse Width

(Note 16)

200

ns (min)

tW(WR)L

Minimum WR Pulse Width

200

ns (min)

tACC

Maximum Access Time

CL e 100 pF

(Delay from Falling Edge of

ns (max)

RD to Output Data Valid)

t0H t1H

TRI-STATE Control

RL e 1kX

(Delay from Rising Edge of

CL e 100 pF

ns (max)

RD to Hi-Z State)

tPD(INT)

Maximum Delay from Falling Edge of

100

175

ns (max)

RD or WR to Reset of INT

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 AGND and DGND unless otherwise specified

Note 3

When the input voltage (VIN) at any pin exceeds the power supply rails (VIN k Vb or VIN l (AVCC or DVCC) the current at that pin should be limited to

5 mA The 20 mA maximum package input current rating allows the voltage at any four pins with an input current limit of 5 mA to simultaneously exceed the power

supply voltages

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