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
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 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
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.
A
DVANCED
L
INEAR
D
EVICES,
I
NC.
QUAD PRECISION CMOS VOLTAGE COMPARATOR WITH PUSH-PULL DRIVER
ALD4302A/ALD4302
PIN CONFIGURATION
+IN
1
-IN
2
+IN
2
03
04
GND
-IN
4
+IN
3
-IN
3
02
01
-IN
1
+IN
4
1
14
V
+
2
3
13
12
11
10
9
8
4
5
6
7
SBL, PBL, DB PACKAGES
BLOCK DIAGRAM
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
Operating Temperature Range *
0°C to +70°C0°C to +70°C -55°C to +125°C
14-Pin 14-Pin 14-Pin
Small Outline Plastic Dip CERDIP
Package (SOIC) Package Package
ALD4302ASBL ALD4302APBL ALD4302ADB
ALD4302SBL ALD4302PBL ALD4302DB
* Contact factory for leaded (non-RoHS) or high temperature versions.
ORDERING INFORMATION (“L” suffix for lead free version)
