AC Electrical Characteristics

Symbol

Parameter

Conditions

Typical

Limit

Units

(Note 9)

(Notes 10 18)

(Limits)

Clock Frequency

20

MHz

05

MHz(min)

40

MHZ(max)

Clock Duty Cycle

50

%

40

%(min)

60

%(max)

Conversion Time

(max)

135

m

s

Acquisition Time

(max)

(Note 15)

35

m

s

Auto Zero Time

26

26

13

m

s

Calibration Time

1396

698

706

m

s (max)

Calibration Pulse Width

(Note 16)

60

200

ns(min)

Minimum WR Pulse Width

60

200

ns(min)

Maximum Access Time

(Delay from Falling Edge of

50

85

ns(max)

RD to Output Data Valid)

TRI-STATE Control (Delay

from Rising Edge of RD

30

90

ns(max)

to Hi-Z State)

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

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

Note 4

ADC1241 with CMJ BIJ and CIJ suffixes when board mounted is 47 CW

Note 5

Human body model 100 pF discharged through a 15 kX resistor

Note 6

Two on-chip diodes are tied to the analog input as shown below Errors in the AD conversion can occur if these diodes are forward biased more than

50 mV

TLH10554 – 3

b

4