Operating Temperature Range *

-55

°C to +125°C0°C to +70°C0°C to +70°C

8-Pin

8-Pin

8-Pin

CERDIP

Small Outline

Plastic Dip

Package

Package (SOIC)

Package

ALD 2301A DA

ALD2301A SA

ALD2301A PA

ALD 2301B DA

ALD 2301B SA

ALD2301B PA

ALD 2301 DA

ALD 2301 SA

ALD2301 PA

ALD 2301C DA

ALD 2301C SA

ALD2301C PA

DUAL PRECISION CMOS VOLTAGE COMPARATOR WITH OPEN DRAIN DRIVER

ALD2301A/ALD2301B

ALD2301/ALD2301C

ORDERING INFORMATION

PIN CONFIGURATION

BLOCK DIAGRAM

GENERAL DESCRIPTION

The ALD2301A/ALD2301B/ALD2301/ALD2301C is a monolithic high

performance dual voltage comparator built with advanced silicon gate

CMOS technology. It features very high typical input impedance of

Ω; low input bias current of 10pA; fast response time of 300ns; very

low power dissipation of 55

µA per comparator; and single +5V or dual

±5V power supply operation.

The input voltage range includes ground, making this comparator ideal

for low level signal detection with high source impedance. The outputs

are open-drain configuration, allowing maximum application flexibility,

such as wired-OR connection. The outputs can be connected to a

The ALD2301A/ALD2301B/ALD2301/ALD2301C is ideal for a great

variety of voltage comparator applications, especially low level signal

detection circuits requiring low standby power, yet retaining high

output current capability as needed.

FEATURES

• Fanout of 30 LS TTL loads

• Low supply current of 110

µA typical

• Functional equivalent to LM193 industry

standard comparators

• Extremely low input bias currents -- 10pA typical

• Virtually eliminates source impedance effects

• Low operating supply voltage of 3V to 12V

• Single +5V and dual supply

±5V operation

• High speed for both large signal and low level

signals -- 300ns typical for TTL inputs

• CMOS, NMOS and TTL compatible

• Wired-OR open drain outputs

• High output sinking current -- 60mA typical

• Low supply current spikes

APPLICATIONS

• High source impedance voltage

comparison circuits

• Dual limit window comparator

• Power supply voltage monitor

• Photo-detector sensor circuit

• Relay or LED driver

• Oscillators

• Battery operated instruments

• Remote signal detection

1

2

3

4

8

7

6

5

OUT1

-IN 1

+IN 1

GND

V+

OUT 2

-IN 2

+IN 2

TOP VIEW

DA, PA, SA PACKAGE

(4) GND

NONINVERTING INPUT

INVERTING INPUT

NONINVERTING INPUT

INVERTING INPUT

* Contact factory for industrial temperature range

© 1998 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, California 94089 -1706 Tel: (408) 747-1155 Fax: (408) 747-1286 http://www.aldinc.com