ADVANCED
LINEAR
DEVICES, INC.
ALD4303A/ALD4303
QUAD PRECISION MICROPOWER CMOS VOLTAGE COMPARATOR WITH DRIVER
APPLICATIONS
GENERAL DESCRIPTION
• 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
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 10 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.
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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
• Battery operated instruments
• Remote signal detection
• Multiple relay drivers
+
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.
PIN CONFIGURATION
02
01
1
2
14
13
03
04
+
12
11
10
9
3
4
V
GND
FEATURES
-IN
+IN
-IN
+IN
-IN
1
1
2
2
4
• 3V, 5V and 10V supply
• Guaranteed to drive 200Ω loads
• Fanout of 30LS TTL loads
5
6
7
+IN
-IN
4
• 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
3
+IN
8
3
SBL, PBL, DB PACKAGES
BLOCK DIAGRAM
+
V
(3)
INVERTING INPUT
-
• High gain -- 100V/mV
- IN (4)
1
(2) OUT
(1) OUT
1
NONINVERTING INPUT
+
+IN (5)
1
ORDERING INFORMATION (“L” suffix for lead free version)
INVERTING INPUT
-
- IN (6)
2
Operating Temperature Range *
2
0°C to +70°C
0°C to +70°C
-55°C to +125°C
NONINVERTING INPUT
+
+ IN (7)
2
14-Pin
Small Outline
Package (SOIC)
14-Pin
Plastic Dip
Package
14-Pin
CERDIP
Package
INVERTING INPUT
-
- IN (8)
3
(14) OUT
(13) OUT
3
4
NONINVERTING INPUT
+
+ IN (9)
3
-
INVERTING INPUT
ALD4303ASBL
ALD4303SBL
ALD4303APBL
ALD4303PBL
ALD4303ADB
ALD4303DB
- IN (10)
4
NONINVERTING INPUT
+
+ IN (11)
4
* Contact factory for leaded (non-RoHS) or high temperature versions.
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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 ]
