Datasheet

ADM1085/ADM1086/ADM1087/ADM1088
Rev. A | Page 5 of 16
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
ENIN/ENIN
1
GND 2
V
IN
3
V
CC
6
CEXT 5
ENOUT/ENOUT 4
ADM1085/
ADM1086/
ADM1087/
ADM1088
TOP VIEW
(Not to Scale)
04591-002
Figure 2. Pin Configuration
Table 4. Pin Function Descriptions
Pin No. Mnemonic Description
1
ENIN,
ENIN Enable Input. Controls the status of the enable output. Active high for ADM1085/ADM1086. Active low for
ADM1087/ADM1088.
2 GND Ground.
3 V
IN
Input for the Monitored Voltage Signal. Can be biased via a voltage divider resistor network to customize the
effective input threshold. Can precisely monitor an analog power supply output signal and detect when it has
powered up. The voltage applied at this pin is compared with a 0.6 V on-chip reference. With this reference,
digital signals with various logic level thresholds can also be detected.
4
ENOUT,
ENOUT Enable Output. Asserted when the voltage at V
IN
is above V
TH_RISING
and the time delay has elapsed, provided
that the enable input is asserted. Active high for the ADM1085/ADM1086. Active low for the
ADM1087/ADM1088.
5 CEXT
External Capacitor Pin. The capacitance on this pin determines the time delay on the enable output. The delay
is seen only when the voltage at V
IN
rises past V
TH_RISING
, and not when it falls below V
TH_FALLING
.
6 V
CC
Power Supply.