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PDF ALD2303DA Data sheet ( Hoja de datos )
| Número de pieza | ALD2303DA | |
| Descripción | DUAL PRECISION MICROPOWER CMOS VOLTAGE COMPARATOR WITH DRIVER | |
| Fabricantes | Advanced Linear Devices | |
| Logotipo |  |
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ADVANCED
LINEAR
DEVICES, INC.
ALD2303A/ALD2303
DUAL PRECISION MICROPOWER CMOS VOLTAGE COMPARATOR WITH DRIVER
GENERAL DESCRIPTION
The ALD2303A/ALD2303 is a precision monolithic high performance
dual voltage comparator built with advanced silicon gate CMOS tech-
nology. It features very high typical input impedance of 1012Ω; 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 voltage
comparator applications, especially low level signal detection circuits
requiring low standby power, yet retaining high output current
capability.
FEATURES
• 3V, 5V and 12V 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 -- 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 -- 60mA
• Low supply current spikes
• High gain -- 100V/mV
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
PIN CONFIGURATION
OUT 1 1
8 V+
-IN 1 2
+IN 1 3
7 OUT 2
6 -IN 2
GND 4
5 +IN 2
TOP VIEW
DA, PA, SA PACKAGE
BENEFITS
• Extremely low power and high precision combination
• Built-in high input impedance buffer
• Built-in output driver with up to 60mA sink current
BLOCK DIAGRAM
ORDERING INFORMATION
Operating Temperature Range *
-55°C to +125°C
0°C to +70°C
0°C to +70°C
8-Pin
CERDIP
Package
Q8-Pin
Small Outline
Package (SOIC)
8-Pin
Plastic Dip
Package
ALD2303A DA
ALD2303 DA
ALD2303A SA
ALD2303 SA
* Contact factory for industrial temperature range
ALD2303A PA
ALD2303 PA
INVERTING INPUT
-IN 1 (2)
NONINVERTING INPUT
+IN 1 (3)
INVERTING INPUT
-IN 2 (6)
NONINVERTING INPUT
+IN 2 (5)
(8) V+
(1) OUT 1
V+
(7) OUT 2
(4) GND
© 1998 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, California 94089 -1706 Tel: (408) 747-1155 Fax: (408) 747-1286 http://www.aldinc.com
1 page  
TYPICAL APPLICATIONS
ZERO CROSSING DETECTOR
+3V
50K
VIN +
VOUT
-3V
1/2 ALD2303
DOUBLE DUAL LIMIT WINDOW COMPARATOR
+12V
ALD2303
+12V
50K VH2
+
+12V
MULTIPLE RELAY DRIVE
+5V
+5V
VREF
VIN
+
1/2 ALD2303
VH1
VIN
47K
+
+12V
+12V
+
VL1
VL2
50K
+
ALD2303
VL1 and VH1 first limit window send warning
VL2 and VH2 second limit window execute system cutoff
VOLTAGE LEVEL TRANSLATOR
V+ = +10V
VREF
VIN
+
50K
VOUT
1/2 ALD2303
VREF
VREF
= 1.4V for TTL input
= V+ for CMOS input
2
Output VOUT swings from rail-to-rail
ALD2303A/ALD2303
Advanced Linear Devices
17
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet ALD2303DA.PDF ] | |
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