A
DVANCED
L
INEAR
D
EVICES,
I
NC.
ALD4302A/ALD4302
QUAD PRECISION CMOS VOLTAGE COMPARATOR WITH PUSH-PULL DRIVER
GENERAL DESCRIPTION
The ALD4302A/ALD4302 is a monolithic high performance quad voltage
comparator built with advanced silicon gate CMOS technology. It features
very high typical input impedance of 10
12
Ω;
low input bias current of 10pA;
fast response time of 120ns; very low power dissipation of 150µA per
comparator; 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 ALD4302A/ALD4302 can be used in wired-OR
connections with other open drain circuits such as the ALD2301 and
ALD2303 voltage comparators.
The ALD4302A/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.
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
PIN CONFIGURATION
02
01
1
14
03
04
GND
+IN
4
-IN
4
+IN
3
-IN
3
2
13
FEATURES
•
•
•
•
•
•
•
•
•
•
•
•
•
Guaranteed to drive 200Ω loads
Fanout of 30LS TTL loads
Low supply current of 150µA each comparator
Extremely low input bias currents -- typically 10pA
Virtually eliminates source impedance effects
Low operating supply voltage of 4V to 10V
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 -- typically 60mA
Low supply current spikes
High gain -- 100V/mV
V
+
-IN
1
+IN
1
-IN
2
+IN
2
3
4
12
11
5
10
6
9
7
8
SBL, PBL, DB PACKAGES
BLOCK DIAGRAM
V
+
INVERTING INPUT
- IN
1
(4)
(3)
-
(2) OUT
1
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
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)
+
-
(1) OUT
2
+
-
(14) OUT
3
+
-
(13) OUT
4
ALD4302ASBL
ALD4302SBL
ALD4302APBL
ALD4302PBL
ALD4302ADB
ALD4302DB
INVERTING INPUT
- IN
4
(10)
NONINVERTING INPUT
+ IN
4
(11)
+
* 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 ]
