BLOCK DIAGRAM

APPLICATIONS

• MOSFET driver

• High source impedance voltage

comparison circuits

• Multiple limit window comparator

• Power supply voltage monitor

• Photo-detector sensor circuit

• High speed LED driver

• Oscillators

• Battery operated instruments

• Remote signal detection

• Multiple relay drivers

FEATURES

• Guaranteed to drive 200

Ω loads

• Fanout of 30 LS TTL loads

• Low supply current of 150

µA each comparator

• Extremely low input bias currents -- 10pA

• 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 and small signals -

120ns for TTL inputs and 400ns for 5mV overdrive

• CMOS, NMOS and TTL compatible

• Push-pull outputs

• High output sinking current -- 60mA

• Low supply current spikes

• High gain -- 100V/mV

GENERAL DESCRIPTION

The ALD4302 is a monolithic high performance quad voltage comparator

built with advanced silicon gate CMOS technology. It features very high

Ω; low input bias current of 10pA; fast

response time of 120ns; very low power dissipation of 150

µA per compara-

tor; and single +5V or dual

±5V power supply operation.

The input voltage range includes ground, making this comparator ideal for

single supply low level signal detection with high source impedance. The

outputs can source and sink current, allowing application flexibility, and can

be used in either wired-OR connection without pull up resistor or push-pull

configuration. The ALD4302 can be used in wired-OR connection with

other open drain circuits such as the ALD2301 and ALD2303 voltage

comparators.

The ALD4302 is ideal for a great variety of precision voltage comparator

applications, especially low level signal detection circuits requiring low

standby power, yet retaining high output current capability.

QUAD PRECISION CMOS VOLTAGE COMPARATOR WITH PUSH-PULL DRIVER

ALD4302A/ALD4302

Operating Temperature Range*

-55

°C to +125°C0°C to 70°C0°C to +70°C

14-Pin

14-Pin

14-Pin

CERDIP

Small Outline

Plastic Dip

Package

Package( SOIC)

Package

ALD4302A DB

ALD4302A SB

ALD4302A PB

ALD4302 DB

ALD4302 SB

ALD4302 PB

PIN CONFIGURATION

DB, PB, SB PACKAGE

03

04

GND

02

01

1

14

2

3

13

12

11

10

9

8

4

5

6

7

V+

(3)

INVERTING INPUT

- IN 1 (4)

NONINVERTING INPUT

+ IN 1 (5)

NONINVERTING INPUT

+ IN 2 (7)

INVERTING INPUT

- IN 2 (6)

NONINVERTING INPUT

+ IN 3 (9)

INVERTING INPUT

- IN 3 (8)

INVERTING INPUT

- IN 4 (10)

(12)

NONINVERTING INPUT

+ IN 4 (11)

-

+

-

+

-

+

-

+

(2) OUT 1

(1) OUT 2

(14) OUT 3

(13) OUT 4

* Contact factory for industrial temperature range

ORDERING INFORMATION

© 2005.1 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, California 94089 -1706 Tel: (408) 747-1155 Fax: (408) 747-1286 http://www.aldinc.com