A
L
D
DVANCED
INEAR
EVICES, INC.
ALD4302A/ALD4302
QUAD PRECISION CMOS VOLTAGE COMPARATOR WITH PUSH-PULL DRIVER
GENERAL DESCRIPTION
APPLICATIONS
The ALD4302A/ALD4302 is a monolithic high performance quad voltage
comparatorbuiltwithadvancedsilicongateCMOStechnology. Itfeatures
veryhightypicalinputimpedanceof10 Ω;lowinputbiascurrentof10pA;
fast response time of 120ns; very low power dissipation of 150µA per
comparator; and single (+5V) or dual (±5V) power supply operation.
• MOSFET driver
• High source impedance voltage
comparison circuits
12
• 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
Theinputvoltagerangeincludesground, makingthiscomparatoridealfor
single supply low level signal detection with high source impedance. The
outputs can source and sink current, allowing application flexibility, and
canbeusedineitherwired-ORconnectionwithoutpullupresistororpush-
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.
PIN CONFIGURATION
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.
02
01
1
2
14
13
03
04
+
12
11
10
9
3
4
FEATURES
V
GND
• Guaranteed to drive 200Ω loads
• Fanout of 30LS TTL loads
-IN
+IN
-IN
+IN
-IN
1
1
2
2
4
• 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
5
6
7
+IN
-IN
4
3
+IN
8
3
SBL, PBL, DB PACKAGES
BLOCK DIAGRAM
• High output sinking current -- typically 60mA
• Low supply current spikes
• High gain -- 100V/mV
+
V
(3)
INVERTING INPUT
-
- IN (4)
1
(2) OUT
(1) OUT
1
NONINVERTING INPUT
+
ORDERING INFORMATION (“L” suffix for lead free version)
+IN (5)
1
Operating Temperature Range *
INVERTING INPUT
-
- IN (6)
2
0°C to +70°C
0°C to +70°C
-55°C to +125°C
2
NONINVERTING INPUT
+
+ IN (7)
2
14-Pin
14-Pin
14-Pin
Small Outline
Package (SOIC)
Plastic Dip
Package
CERDIP
Package
INVERTING INPUT
-
- IN (8)
3
(14) OUT
(13) OUT
3
4
NONINVERTING INPUT
+
+ IN (9)
3
ALD4302ASBL
ALD4302SBL
ALD4302APBL
ALD4302PBL
ALD4302ADB
ALD4302DB
-
INVERTING INPUT
- IN (10)
4
NONINVERTING INPUT
+
+ IN (11)
4
* 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
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