adcmp572 Analog Devices, Inc., adcmp572 Datasheet - Page 13

• Manufacturer Part Number: adcmp572
• Description: Ultrafast 3.3 V/5 V Single-supply Comparators
• Manufacturer: Analog Devices, Inc.

TIMING INFORMATION
Figure 29 illustrates the ADCMP572/ADCMP573 compare and latch timing relationships. Table 4 provides definitions of the terms
shown in the figure.
Table 4. Timing Descriptions
Symbol
t
t
t
t
t
t
t
t
t
V
PDH
PDL
PLOH
PLOL
H
PL
S
R
F
OD
Timing
Input to output high delay
Input to output low delay
Latch enable to output high delay
Latch enable to output low delay
Minimum hold time
Minimum latch enable pulse width
Minimum setup time
Output rise time
Output fall time
Voltage overdrive
INPUT VOLTAGE
LATCH ENABLE
LATCH ENABLE
DIFFERENTIAL
Q OUTPUT
Q OUTPUT
V
IN
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
Figure 29. System Timing Diagram
V
t
S
OD
t
t
PDL
PDH
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t
H
t
R
t
F
t
PL
t
t
PLOH
PLOL
A
and V
B
.
ADCMP572/ADCMP573
50%
V
50%
50%
N
± V
OS