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ADCMP580/ADCMP581/ADCMP582
TIMING INFORMATION
Figure 2 shows the ADCMP580/ADCMP581/ADCMP582 compare and latch timing relationships. Table 2 provides the definitions of the
terms shown in the figure.
Rev. 0 | Page 5 of 16
50%
50%
V
N
± V
OS
50%
DIFFERENTIAL
INPUT VOLTAGE
LATCH ENABLE
Q OUTPUT
Q OUTPUT
LATCH ENABLE
t
H
t
PDL
t
PDH
t
PLOH
t
PLOL
t
R
t
F
V
N
V
OD
t
S
t
PL
0
Figure 2. Comparator Timing Diagram
Table 2. Timing Descriptions
Symbol
Timing
t
PDH
Input to Output High Delay
Description
Propagation delay measured from the time the input signal crosses the reference
(± the input offset voltage) to the 50% point of an output low-to-high transition.
Propagation delay measured from the time the input signal crosses the reference
(± the input offset voltage) to the 50% point of an output high-to-low transition.
Propagation delay measured from the 50% point of the latch enable signal
low-to-high transition to the 50% point of an output low-to-high transition.
Propagation delay measured from the 50% point of the latch enable signal
low-to-high transition to the 50% point of an output high-to-low transition.
Minimum time after the negative transition of the latch enable signal that the
input signal must remain unchanged to be acquired and held at the outputs.
Minimum time that the latch enable signal must be high to acquire an input
signal change.
Minimum time before the negative transition of the latch enable signal that an
input signal change must be present to be acquired and held at the outputs.
Amount of time required to transition from a low to a high output as measured
at the 20% and 80% points.
Amount of time required to transition from a high to a low output as measured
at the 20% and 80% points.
Difference between the input voltages V
P
and V
N
for output true.
Difference between the input voltages V
P
and V
N
for output false.
t
PDL
Input to Output Low Delay
t
PLOH
Latch Enable to Output High Delay
t
PLOL
Latch Enable to Output Low Delay
t
H
Minimum Hold Time
t
PL
Minimum Latch Enable Pulse Width
t
S
Minimum Setup Time
t
R
Output Rise Time
t
F
Output Fall Time
V
N
V
OD
Normal Input Voltage
Voltage Overdrive