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
DUAL PRECISION CMOS VOLTAGE COMPARATOR WITH OPEN DRAIN DRIVER
ALD2301A/ALD2301B
ALD2301C/ALD2301
A
DVANCED
L
INEAR
D
EVICES,
I
NC.
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.
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
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
BENEFITS
• Low power and high precision combination
• Built-in high input impedance buffer
• Built-in output driver with up to 60mA sink current
BLOCK DIAGRAM
(1) OUT
1
(7) OUT
2
(4) GND
V
+
(8) V
+
NONINVERTING INPUT
+IN
1
(3)
INVERTING INPUT
NONINVERTING INPUT
INVERTING INPUT
-IN
1
(2)
+IN
2
(5)
-IN
2
(6)
Operating Temperature Range *
0°C to +70°C0°C to +70°C -55°C to +125°C
8-Pin 8-Pin 8-Pin
Small Outline Plastic Dip CERDIP
Package (SOIC) Package Package
ALD2301ASAL ALD2301APAL ALD2301ADA
ALD2301BSAL ALD2301BPAL ALD2301BDA
ALD2301CSAL ALD2301CPAL ALD2301CDA
ALD2301SAL ALD2301PAL ALD2301DA
ORDERING INFORMATION (“L” suffix for lead free version)
* Contact factory for leaded (non-RoHS) or high temperature versions.
PIN CONFIGURATION
1
2
3
4
8
7
6
5
OUT
1
-IN
1
+IN
1
GND
V
+
OUT
2
-IN
2
+IN
2
SAL, PAL, DA PACKAGES
