A
DVANCED
L
INEAR
D
EVICES,
I
NC.
ALD4302A/ALD4302
QUAD PRECISION CMOS VOLTAGE COMPARATOR WITH PUSH-PULL DRIVER
GENERAL DESCRIPTION
The 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 compara-
tor; 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 ALD4302 can be used in wired-OR connection with
other open drain circuits such as the ALD2301 and ALD2303 voltage
comparators.
The 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.
FEATURES
•
•
•
•
•
•
•
•
•
•
•
•
•
Guaranteed to drive 200Ω loads
Fanout of 30 LS TTL loads
Low supply current of 150µA each comparator
Extremely low input bias currents -- 10pA
Virtually eliminates source impedance effects
Low operating supply voltage of 3V to 12V
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 -- 60mA
Low supply current spikes
High gain -- 100V/mV
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
V
+
-IN
1
+IN
1
-IN
2
+IN
2
1
14
03
04
GND
+IN
4
-IN
4
+IN
3
-IN
3
2
13
3
4
12
11
5
10
6
9
7
8
DB, PB, SB PACKAGE
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
-55°C to +125°C
14-Pin
CERDIP
Package
ALD4302A DB
ALD4302 DB
Operating Temperature Range*
0°C to 70°C
0°C to +70°C
14-Pin
Small Outline
Package( SOIC)
ALD4302A SB
ALD4302 SB
14-Pin
Plastic Dip
Package
ALD4302A PB
ALD4302 PB
+
-
(14) OUT
3
+
-
(13) OUT
4
+
*
Contact factory for industrial temperature range
(12)
© 1998 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, California 94089 -1706 Tel: (408) 747-1155 Fax: (408) 747-1286 http://www.aldinc.com
ALD [ ADVANCED LINEAR DEVICES ]
