A
DVANCED
L
INEAR
D
EVICES,
I
NC.
ALD4303A/ALD4303
QUAD PRECISION MICROPOWER CMOS VOLTAGE COMPARATOR WITH DRIVER
GENERAL DESCRIPTION
The ALD4303A/ALD4303 is a precision monolithic high performance
quad voltage comparator with open drain output built with advanced
silicon gate CMOS technology. It features very high typical input
impedance of 1012
Ω;
low input bias current of 10pA; very low power
dissipation of 7.5µA per comparator; micropower operation; high
output drive 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 ALD4303A/ALD4303 can be used in connection with
other voltage comparator circuits such as the ALD2301, ALD2302,
and ALD4302 voltage comparators. The outputs can be connected to
a higher external voltage than V+ and used in a wired-OR connection
with other open drain circuits such as the ALD2301 and ALD2303.
They can also be used with push-pull output types such as the
ALD2302 and ALD4302 voltage comparators simultaneously with
open drain comparators using a common V+. The ALD4303A/ALD4303
is ideal for a great variety of voltage comparator applications, espe-
cially micropower detection circuits requiring very low input currents,
high output currents and low standby power.
FEATURES
•
•
•
•
•
•
•
•
•
•
•
•
•
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3V, 5V and 10V supply
Guaranteed to drive 200Ω loads
Fanout of 30LS TTL loads
Guaranteed maximum supply current of 22µA per comparator
Industry standard pinout of LM393 type
Extremely low input bias currents -- typically 10pA
Virtually eliminates source impedance effects
Single (+5V) and dual supply (±5V) operation
CMOS, NMOS and TTL compatible
Open drain wired-OR outputs
Compatible with push-pull outputs
High output sinking current -- typically 60mA
Low supply current spikes
High gain -- 100V/mV
-IN
1
+IN
1
-IN
2
+IN
2
4
11
APPLICATIONS
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•
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Sensor detection circuits
PCMCIA instruments
MOSFET driver
High source impedance voltage
comparison circuits
Multiple limit window comparator
Power supply voltage monitor
Photodetector sensor circuit
High speed LED driver
Oscillators
Battery operated instruments
Remote signal detection
Multiple relay drivers
PIN CONFIGURATION
02
01
V
+
1
14
03
04
GND
+IN
4
-IN
4
+IN
3
-IN
3
2
13
3
12
5
10
6
9
7
8
SBL, PBL, DB PACKAGES
BLOCK DIAGRAM
V
+
INVERTING INPUT
- IN
1
(4)
NONINVERTING INPUT
+ IN
1
(5)
INVERTING INPUT
- IN
2
(6)
NONINVERTING INPUT
+ IN
2
(7)
INVERTING INPUT
- IN
3
(8)
NONINVERTING INPUT
+ IN
3
(9)
INVERTING INPUT
- IN
4
(10)
NONINVERTING INPUT
+ IN
4
(11)
(3)
-
(2) OUT
1
+
-
(1) OUT
2
ORDERING INFORMATION
(“L” suffix for lead free version)
Operating Temperature Range *
0°C to +70°C
0°C to +70°C
-55°C to +125°C
14-Pin
Small Outline
Package (SOIC)
14-Pin
Plastic Dip
Package
14-Pin
CERDIP
Package
+
-
(14) OUT
3
+
-
(13) OUT
4
ALD4303ASBL
ALD4303SBL
ALD4303APBL
ALD4303PBL
ALD4303ADB
ALD4303DB
+
* Contact factory for leaded (non-RoHS) or high temperature versions.
(12)
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
ALD [ ADVANCED LINEAR DEVICES ]
