Ac electrical characteristics, Tri-state test circuits and waveforms – Rainbow Electronics ADC1061 User Manual
Page 4
AC Electrical Characteristics
(Continued)
The following specifications apply for V
a
e
a
5V t
r
e
t
f
e
20 ns V
REF(
a
)
e
5V and V
REF(
b
)
e
GND unless otherwise
specified Boldface limits apply for T
A
e
T
J
e
T
MIN
to T
MAX
all other limits T
A
e
T
J
e
25 C
Symbol
Parameter
Conditions
Typical
Limit
Units
(Note 7)
(Note 8)
C
VIN
Analog Input Capacitance
35
pF
C
OUT
Logic Output Capacitance
5
pF
C
IN
Logic Input Capacitance
5
pF
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 unless otherwise specified
Note 3
When the input voltage (V
IN
) at any pin exceeds the power supply rails (V
IN
k
V
b
or V
IN
l
V
a
) the absolute value of current at that pin should be limited
to 5 mA or less The 20 mA package input current limits the number of pins that can safely exceed the power supplies with an input of 5 mA to four
Note 4
The maximum power dissipation must be derated at elevated temperatures and is dictated by T
JMAX
i
JA
and the ambient temperature T
A
The maximum
allowable power dissipation at any temperature is P
D
e
(T
JMAX
b
T
A
) i
JA
or the number given in the Absolute Maximum Ratings whichever is lower For this
device T
JMAX
e
150 C and the typical thermal resistance (i
JA
) when board mounted is 47 C W for the plastic (N) package 85 C W for the ceramic (J) package
and 65 C W for the small outline (WM) package
Note 5
Human body model 100 pF discharged through a 1 5 kX resistor
Note 6
See AN-450 ‘‘Surface Mounting Methods and Their Effect on Product Reliability’’ or the section titled ‘‘Surface Mount’’ found in a current National
Semiconductor Linear Data Book for other methods of soldering surface mount devices
Note 7
Typicals are at 25 C and represent most likely parametric norm
Note 8
Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level)
Note 9
Accuracy may degrade if tSH is shorter than the value specified
TRI-STATE Test Circuits and Waveforms
TL H 10559 – 3
TL H 10559 – 4
TL H 10559 – 5
TL H 10559 – 6
4