
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
QUAD PRECISION CMOS VOLTAGE COMPARATOR WITH OPEN DRAIN DRIVER
ALD4301A/ALD4301
ADVANCED
LINEAR
DEVICES, INC.
GENERAL DESCRIPTION
The ALD4301A/ALD4301 is a monolithic high performance quad
voltage comparator built with advanced silicon gate CMOS technol-
ogy. It features very high typical input impedance of 1012; low input
bias current of 10pA; fast response time of 300ns; very low power
dissipation of 55A per comparator; high output drive and single
(+5V) or dual (±5V) power supply operation.
The input voltage range includes ground, making this comparator
ideal for low level signal detection with high source impedance. The
outputs are open-drain configuration, allowing maximum application
flexibility. The outputs can be connected to 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 ALD4301A/ALD4301 is ideal for a great
variety of voltage comparator applications, especially detection cir-
cuits requiring very low input currents and low standby power, yet
retaining high output current capability.
FEATURES
Fanout of 30LS TTL loads
Low supply current of 55A/comparator typical
Pinout/Functional equivalent to LM393 types
Extremely low input bias currents -- typically 10pA
Virtually eliminates source impedance effects
Low operating supply voltage of 3V to 10V
Single (+5V) and dual supply (±5V) operation
High speed for both large signal and low level
signals -- 300ns typical for TTL inputs
CMOS, NMOS and TTL compatible
Wired-OR open drain outputs
High output sinking current -- typically 60mA
Low supply current spikes
High gain
APPLICATIONS
High source impedance voltage
comparison circuits
Dual/Quad limit window comparator
Power supply voltage monitor
Photo-detector sensor circuit
Relay or LED driver
Oscillators
Battery operated instruments
Remote signal detection
Operating Temperature Range *
0°C to +70°C0°C to +70°C
-55°C to +125°C
14-Pin
Small Outline
Plastic Dip
CERDIP
Package (SOIC)
Package
ALD4301ASBL
ALD4301APBL
ALD4301ADB
ALD4301SBL
ALD4301PBL
ALD4301DB
* Contact factory for leaded (non-RoHS) or high temperature versions.
ORDERING INFORMATION (“L” suffix for lead free version)
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