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 PUSH-PULL DRIVER
ALD2332A/ALD2332B/ALD2332
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
BENEFITS
• Simple precision reference voltage setting
• On-chip input pre-amplifier and output
buffers
• Precision voltage comparison without
pre-amplifier
• Eliminate need for second power supply
• Eliminate pull-up resistor
A
DVANCED
L
INEAR
D
EVICES,
I
NC.
GENERAL DESCRIPTION
The ALD2332A/ALD2332B/ALD2332 is a monolithic high performance
dual precision voltage comparator built with advanced silicon gate
EPAD
®
CMOS technology intended for high precision analog applica-
tions. The ALD2332A/ALD2332B/ALD2332 offers ultra-low input offset
voltages and currents at its input pre-amplifier, precision voltage com-
parator and high-current output driver integrated on-chip, in one industry
standard pinout 8 Lead PDIP or SOIC package. Primary features include:
very high typical input impedance of 10
12
Ω; low input bias current of
10pA; fast response time of 520ns with only 10mV input step signal; very
low power dissipation of 175µA per comparator; single (+5V) or dual
(±5V) power supply operation; and 50mA push-pull output drivers.
The input voltage range includes ground, which makes these compara-
tors ideal for single supply low level signal detection with high source
impedance. The outputs can source and sink current allowing for
application flexibility. They can be used in either wired-OR connection
without pull-up resistor or push-pull configuration. ALD2332A/ALD2332B/
ALD2332 can also be used in wired-OR connection with other open
drain circuits such as the ALD2331/ALD2303 voltage comparators.
The ALD2332A/ALD2332B/ALD2332 voltage comparators are ideal for
a great variety of precision analog voltage comparator applications,
especially in low level signal detection circuits which require low standby
power and high output current.
FEATURES
• Guaranteed to drive 200Ω loads
• Fanout of 30LS TTL loads
• Low supply current of 175µA each comparator
• Pinout of LM193 type industry standard voltage comparators
• Extremely low input bias currents -- typically 10pA
• Virtually eliminates source impedance effects
• Low operating supply voltage of 4V to 10V
• Single (+5V) and dual supply (±5V) operation
• High speed for both large and small signals --
180ns for TTL inputs and 400ns for 20mV overdrive
• CMOS, NMOS and TTL compatible
• Push-pull outputs-current sourcing/ sinking
• High output sinking current -- typically 50mA
• Low supply current spikes
• High gain -- 100V/mV
PIN CONFIGURATION
BLOCK DIAGRAM
(1) OUT
1
(7) OUT
(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
+
1
2
3
4
8
7
6
5
OUT
1
-IN
1
+IN
1
GND
V
+
OUT
2
-IN
2
+IN
2
SAL, PAL PACKAGES
Operating Temperature Range *
0°C to +70°C 0°C to +70°C
8-Pin Small Outline 8-PinPlastic
Package (SOIC) Dip Package
ALD2332ASAL ALD2332APAL
ALD2332BSAL ALD2332BPAL
ALD2332SAL ALD2332PAL
ORDERING INFORMATION (“L” suffix for lead free version)
* Contact factory for leaded (non-RoHS) or high temperature versions.
