ADCMP580 AD [Analog Devices], ADCMP580 Datasheet - Page 13

• Manufacturer Part Number: ADCMP580
• Description: Ultrafast SiGe Voltage Comparator
• Manufacturer: AD [Analog Devices]

Preliminary Technical Data
TIMING INFORMATION
Figure 26 shows the ADCMP580/ADCMP581/ADCMP582 compare and latch timing relationships. Table 4 provides a definition 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
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
V
N
Figure 26. Comparator Timing Diagram
V
t
S
OD
t
t
PDL
PDH
Rev. PrA | Page 13 of 16
t
H
t
R
t
F
P
and V
t
PL
N
ADCMP580/ADCMP581/ADCMP582
t
t
.
PLOH
PLOL
50%
V
50%
50%
N
± V
OS