ADM6339

Rev. A | Page 9 of 12

When monitoring a voltage more negative than −0.5 V, a

scheme similar to that previously described in the Monitoring

Negative Voltages < −5.0 V section is used. For an input

monitor current error of <1%, the resistor network current

following equation:

internal threshold voltage, −0.487 V (typical).

RESET OUTPUT CONFIGURATION

The RESET output asserts low if a monitored INx voltage

drops below its voltage threshold (or goes above its associated

threshold in the case of the −0.5 V and −5.0 V input options).

After all voltages exceed their associated threshold level, the

(200 ms typical).

RESET

10%

90%

Figure 16. ADM6339 RESET Timing

10 μA (typical). Many applications that interface with other

logic devices do not require an external pull-up resistor.

However, if an external pull-up resistor is required and it is

connected to a voltage ranging from 0 V to 5.5 V, the resistor

overdrives the internal pull-up. Reverse current flow from the

circuitry.

ADM6339

RESET

100k

Ω

RESET

5V

Figure 17. Interfacing with a Different Logic Supply Voltage