Data Sheet

ADCMP580/ADCMP581/ADCMP582

Rev. B | Page 5 of 16

TIMING INFORMATION

Figure 2 shows the ADCMP580/ADCMP581/ADCMP582 compare and latch timing relationships. Table 2 provides the definitions of the

terms shown in Figure 2.

50%

50%

50%

DIFFERENTIAL

INPUT VOLTAGE

LATCH ENABLE

Q OUTPUT

Q OUTPUT

LATCH ENABLE

Figure 2. Comparator Timing Diagram

Table 2. Timing Descriptions

Symbol

Symbol Description

Timing Description

Input-to-Output High Delay

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.

Input-to-Output Low Delay

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.

Latch Enable-to-Output High Delay

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.

Latch Enable-to-Output Low Delay

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 Hold Time

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 Latch Enable Pulse Width

Minimum time that the latch enable signal must be high to acquire an input signal change.

Minimum Setup Time

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.

Output Rise Time

Amount of time required to transition from a low to a high output as measured at the

20% and 80% points.

Output Fall Time

Amount of time required to transition from a high to a low output as measured at the

20% and 80% points.

Normal Input Voltage

Voltage Overdrive