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 MICROPOWER CMOS VOLTAGE COMPARATOR WITH DRIVER
ALD2303A/ALD2303
APPLICATIONS
• Sensor detection circuits
• PCMCIA instruments
• MOSFET driver
• High source impedance voltage comparison circuits
• Multiple limit window comparator
• Power supply voltage monitor
• Photodetector sensor circuit
• High speed LED driver
• Oscillators
• Battery operated instruments
• Remote signal detection
• Multiple relay drivers
BENEFITS
• Extremely low power and high precision combination
• Built-in high input impedance buffer
• Built-in output driver with up to 60mA sink current
A
DVANCED
L
INEAR
D
EVICES,
I
NC.
GENERAL DESCRIPTION
The ALD2303A/ALD2303 is a precision 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; very low power dissipation of 7.5µA 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 ALD2303A/ALD2303 can be used in connection with
other voltage comparator circuits such as the ALD2301/ALD2302/
ALD4302 voltage comparators. The output can be connected to a
higher external voltage than V
+
.
The ALD2303A/ALD2303 is ideal for high precision micropower volt-
age comparator applications, especially low level signal detection
circuits requiring low standby power, yet retaining high output current
capability.
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
ALD2303ASAL ALD2303APAL ALD2303ADA
ALD2303SAL ALD2303APAL ALD2303DA
ORDERING INFORMATION (“L” suffix for lead free version)
* Contact factory for leaded (non-RoHS) or high temperature versions.
BLOCK DIAGRAM
(1) OUT
1
(7) OUT
2
(4) GND
V
+
NONINVERTING INPUT
+IN
1
(3)
INVERTING INPUT
-IN
2
(6)
NONINVERTING INPUT
+IN
2
(5)
INVERTING INPUT
-IN
1
(2)
(8) V
+
FEATURES
• 3V, 5V, and 10V supply
• Guaranteed to drive 200Ω loads
• Fanout of 30LS TTL loads
• Guaranteed maximum supply current of
20µA for each comparator
• Pinout of LM193 type industry standard
comparators
• Extremely low input bias currents
-- typically 10pA
• Virtually eliminates source impedance
effects
• Single (+5V) and dual supply (±5V) operation
• CMOS, NMOS and TTL compatible
• Open drain wired-OR outputs
• High output sinking current -- typically 60mA
• Low supply current spikes
• High gain -- 100V/mV
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
