Rev 2.0 ©2010 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, CA 94089-1706 Tel: (408) 747-1155 Fax: (408) 747-1286

www.aldinc.com

DUAL PRECISION CMOS VOLTAGE COMPARATOR WITH OPEN DRAIN DRIVER

ALD2301A/ALD2301B

ALD2301C/ALD2301

GENERAL DESCRIPTION

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

performance dual voltage comparator built with advanced silicon gate

CMOS technology. It features very high typical input impedance of

very low power dissipation of 55µA 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 con-

The ALD2301A/ALD2301B/ALD2301C/ALD2301 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 30LS TTL loads

• Low supply current of 110µA typical

• Functional equivalent to LM193 industry

standard comparators

• Extremely low input bias currents

-- typically 10pA

• Virtually eliminates source impedance

effects

• Low operating supply voltage of 3V to 10V

• 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 -- typically 60mA

• 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

BENEFITS

• Low power and high precision combination

• Built-in high input impedance buffer

• Built-in output driver with up to 60mA sink current

BLOCK DIAGRAM

(4) GND

NONINVERTING INPUT

INVERTING INPUT

NONINVERTING INPUT

INVERTING INPUT

Operating Temperature Range *

0°C to +70°C0°C to +70°C

-55°C to +125°C

8-Pin

8-Pin

8-Pin

Small Outline

Plastic Dip

CERDIP

Package (SOIC)

Package

Package

ALD2301ASAL

ALD2301APAL

ALD2301ADA

ALD2301BSAL

ALD2301BPAL

ALD2301BDA

ALD2301CSAL

ALD2301CPAL

ALD2301CDA

ALD2301SAL

ALD2301PAL

ALD2301DA

* Contact factory for leaded (non-RoHS) or high temperature versions.

PIN CONFIGURATION

1

2

3

4

8

7

6

5

OUT1

-IN 1

+IN 1

GND

V+

OUT 2

-IN 2

+IN 2

SAL, PAL, DA PACKAGES