Single/Dual/Quad Comparators

With Known Power-Up State

Data Sheet

ADCMP391/ADCMP392/ADCMP393

Rev. D

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FEATURES

Single-supply voltage operation: 2.3 V to 5.5 V

Rail-to-rail common-mode input voltage range

undervoltage lockout (UVLO)

Operating temperature range: −40°C to +125°C

Package types:

8-lead, narrow body SOIC (ADCMP391/ADCMP392)

14-lead, narrow body SOIC (ADCMP393)

14-lead TSSOP (ADCMP393)

APPLICATIONS

Battery management/monitoring

Power supply detection

Window comparators

Threshold detectors/discriminators

Microprocessor systems

GENERAL DESCRIPTION

The ADCMP391/ADCMP392/ADCMP393 are

single/dual/quad rail-to-rail input, low power comparators ideal

for use in general-purpose applications. These comparators

operate from a single supply voltage of 2.3 V to 5.5 V and draw

a minimal amount of current. The single ADCMP391

consumes only 18.6 µA of supply current. The dual ADCMP392

and the quad ADCMP393 consumes 22.1 µA and 26.8 µA of

supply current, respectively. The low voltage and low current

operation of these devices makes it ideal for battery-powered

systems.

The comparators features a common-mode input voltage range

of 200 mV beyond rails, an offset voltage of 1 mV typical across

the full common-mode range, and a UVLO monitor. In addition,

the design of the comparators allows a defined output state

upon power-up, a logic low output while the supply voltage is

less than the UVLO threshold.

The ADCMP391 and ADCMP392 are available in 8-lead,

narrow body SOIC package while the ADCMP393 is available

in a 14-lead, narrow body SOIC package and a 14-lead TSSOP

package. The comparators are specified to operate over the

−40°C to +125°C extended temperature range.

FUNCTIONAL BLOCK DIAGRAMS

OUT

IN+

IN–

GND

VCC

ADCMP391

Figure 1.

OUTA

INA+

INA–

OUTB

INB+

INB–

GND

VCC

ADCMP392

Figure 2.

INA+

INA–

INB+

INB–

INC+

INC–

IND+

IND–

GND

VCC

ADCMP393

OUTA

OUTB

OUTC

OUTD

Figure 3.