A
DVANCED
L
INEAR
D
EVICES,
I
NC.
ALD2301A/ALD2301B
ALD2301C/ALD2301
DUAL PRECISION CMOS VOLTAGE COMPARATOR WITH OPEN DRAIN DRIVER
GENERAL DESCRIPTION
The ALD2301A/ALD2301B/ALD2301C/ALD2301 is a monolithic high
performance dual 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 300ns;
very low power dissipation of 55µA per comparator; 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, such as wired-OR connection. The outputs can be con-
nected to a higher external voltage than V
+
.
The ALD2301A/ALD2301B/ALD2301C/ALD2301 is ideal for a great
variety of voltage comparator applications, especially low level signal
detection circuits requiring low standby power, yet retaining high
output current capability as needed.
APPLICATIONS
•
•
•
•
•
•
•
•
High source impedance voltage comparison circuits
Dual limit window comparator
Power supply voltage monitor
Photo-detector sensor circuit
Relay or LED driver
Oscillators
Battery operated instruments
Remote signal detection
FEATURES
• Fanout of 30LS TTL loads
• Low supply current of 110µA typical
• Functional equivalent to LM193 industry
standard comparators
• 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
PIN CONFIGURATION
OUT
1
-IN
1
+IN
1
GND
1
2
3
4
8
7
6
5
V
+
OUT
2
-IN
2
+IN
2
BENEFITS
• Low power and high precision combination
• Built-in high input impedance buffer
• Built-in output driver with up to 60mA sink current
SAL, PAL, DA PACKAGES
ORDERING INFORMATION
(“L” suffix for lead free version)
0°C to +70°C
Operating Temperature Range *
0°C to +70°C
-55°C to +125°C
8-Pin
Plastic Dip
Package
8-Pin
CERDIP
Package
BLOCK DIAGRAM
(8) V
+
INVERTING INPUT
-IN
1
(2)
NONINVERTING INPUT
+IN
1
(3)
V
+
(1) OUT
1
8-Pin
Small Outline
Package (SOIC)
ALD2301ASAL
ALD2301BSAL
ALD2301CSAL
ALD2301SAL
ALD2301APAL
ALD2301BPAL
ALD2301CPAL
ALD2301PAL
ALD2301ADA
ALD2301BDA
ALD2301CDA
ALD2301DA
INVERTING INPUT
-IN
2
(6)
NONINVERTING INPUT
+IN
2
(5)
(4) GND
(7) OUT
2
* Contact factory for leaded (non-RoHS) or high temperature versions.
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 ]
