Operating Temperature Range *
-55
C to +125
C
0
C to +70
C
0
C to +70
C
14-Pin
14-Pin
14-Pin
CERDIP
Small Outline
Plastic Dip
Package
Package (SOIC)
Package
ALD4303ADB
ALD4303ASB
ALD4303APB
ALD4303DB
ALD4303SB
ALD4303PB
QUAD PRECISION MICROPOWER CMOS VOLTAGE COMPARATOR WITH DRIVER
ALD4303A/ALD4303
ORDERING INFORMATION
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.
FEATURES
3V, 5V and 12V supply
Guaranteed to drive 200
loads
Fanout of 30LS TTL loads
Guaranteed maximum supply current of
22
A per comparator
Industry standard pinout of LM393 type
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
Compatible with push-pull outputs
High output sinking current -- 60mA
Low supply current spikes
High gain -- 100V/mV
GENERAL DESCRIPTION
The ALD4303A/ALD4303 is a precision monolithic high performance
quad voltage comparator with open drain output built with advanced
silicon gate CMOS technology. It features very high typical input
impedance of 10
12
; low input bias current of 10pA; very low power
dissipation of 7.5
A per comparator; micropower operation; high
output drive 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 ALD4303A/ALD4303 can be used in connection with other voltage
comparator circuits such as the ALD2301/ALD2302/ALD4302 voltage
comparators. The outputs can be connected to a higher external
voltage than V
+
and used in a wired-OR connection with other open
drain circuits such as ALD2301/ALD2303. They can also be used with
push-pull output types such as ALD2302/ALD4302 voltage compara-
tors simultaneously with open drain comparators using a common V+.
The ALD4303A/ALD4303 is ideal for a great variety of voltage com-
parator applications, especially micropower detection circuits requiring
very low input currents, high output currents and low standby power.
* Contact factory for industrial temperature range
PIN CONFIGURATION
BLOCK DIAGRAM
2005 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, California 94089 -1706 Tel: (408) 747-1155 Fax: (408) 747-1286 http://www.aldinc.com
DB, PB, SB PACKAGE
+IN
1
-IN
2
+IN
2
03
04
GND
-IN
4
+IN
3
-IN
3
02
01
-IN
1
+IN
4
1
14
V
+
2
3
13
12
11
10
9
8
4
5
6
7
V
+
(3)
INVERTING INPUT
- IN
1
(4)
NONINVERTING INPUT
+ IN
1
(5)
NONINVERTING INPUT
+ IN
2
(7)
INVERTING INPUT
- IN
2
(6)
NONINVERTING INPUT
+ IN
3
(9)
INVERTING INPUT
- IN
3
(8)
INVERTING INPUT
- IN
4
(10)
(12)
NONINVERTING INPUT
+ IN
4
(11)
-
+
-
+
-
+
-
+
(2) OUT
1
(1) OUT
2
(14) OUT
3
(13) OUT
4
ALD4303A/ALD4303
Advanced Linear Devices
OPERATING ELECTRICAL CHARACTERISTICS
T
A
= 25
C V+= +5V unless otherwise specified
4303A
4303
Test
Parameter
Symbol
Min
Typ
Max
Min
Typ
Max
Unit
Conditions
Notes:
1
Consists of junction leakage currents
2
Sample tested parameters
Voltage
V
S
1.5
6
1.5
6
V
Dual Supplies
Supply
V
+
3
12
3
12
V
Single Supply
Supply
I
S
50
90
50
90
A
R
LOAD
=
Current
4 comparators
Voltage
A
VD
10
100
10
100
V/mV
R
LOAD
15K
Gain
Input Offset
V
OS
2
5.0
4
10.0
mV
R
LOAD
=1.5K
Voltage
7.0
12.0
0
C
T
A
70
C
Input Offset
I
OS
0.1
30
0.1
30
pA
Current
1
800
800
0
C
T
A
70
C
Input Bias
I
B
0.1
30
0.1
30
pA
Current
1
1000
1000
0
C
T
A
70
C
Common
Mode Input
V
ICR
-0.3
V
+-1.5
-0.3
V
+
-1.5
V
Voltage
Range
2
Low Level
I
SINK
=12mA
Output
V
OL
0.18
0.4
0.18
0.4
V
V
INPUT
=1V
Voltage
Differential
Low Level
Output
I
OL
24
60
24
60
mA
V
OL
=1.0V
Current
High Level
Leakage
I
LH
0.1
20
0.1
20
nA
V
OH
= 5.0V
Current
Response
R
L
=50K
Time
2
t
RP
6.5
6.5
s
C
L
= 15pF
10mV Input
Step/10mV
Overdrive
RL = 50K
5
5
s
C
L
= 15pF
TTL- Level Input
Step
ABSOLUTE MAXIMUM RATINGS
Supply voltage, V
+
13.2V
Differential input voltage range
-0.3V to V
+
+0.3V
Power dissipation
600 mW
Operating temperature range
PB, SB package
0
C to +70
C
DB package
-55
C to +125
C
Storage temperature range
-65
C to +150
C
Lead temperature, 10 seconds
+260
C
ALD4303A/ALD4303
Advanced Linear Devices
TYPICAL PERFORMANCE CHARACTERISTICS
SATURATION VOLTAGE
vs. TEMPERATURE
TEM PERATURE (
C)
-55
-25
0
25
50
125
100
75
1.4
1.2
1.0
0.8
0.6
0.4
0.2
SATURATION VOLTAGE (V)
0
V
S
=
2.5V
I
SINK
= 50mA
TRANSFER FUNCTION
DIFFERENTIAL INPUT VOLTAGE (mV)
+6.0
-6.0
0.0
OUTPUT VOLTAGE (V)
+2.5
0.0
-2.5
T
A
= 25
C
V
S
=
6V
R
L
= 50K
COMMON - MODE VOLTAGE REFERRED
TO SUPPLY VOLTAGE
TEMPERATURE (
C)
0.5
V+
-0.5
-1.0
0.5
V-
-0.5
COMMON - MODE LIMITS (V)
-55
-25
0
25
50
125
100
75
V
S
=
2.5V
TIM E (
s)
0
1
2
4
3
6
5
7
RESPONSE TIME FOR VARIOUS
INPUT OVERDRIVES
+2.5
100
0
0.0
-2.5
INPUT
VOLTAGE (mV)
OUTPUT
VOLTAGE (V)
TTL
T
A
= 25
C
V
S
=
2.5V
0V
V
IN
V+
V-
V
OUT
+
-
10mV
50K
SATURATION VOLTAGE vs.
SINK CURRENT
OUTPUT SINK CURRENT (mA)
0
15
30
45
60
75
1.5
1.2
0.9
0.6
0.3
0.0
OUTPUT SATURATION
VOLTAGE (V)
V
S
=
2.5V
-55
C
25
C
-25
C
85
C
125
C
TIM E (
s)
0.0
0.1
0.2
0.4
0.3
0.6
0.5
0.7
RESPONSE TIME FOR VARIOUS
INPUT OVERDRIVES
+2.5
0
100
0.0
-2.5
INPUT
VOLTAGE (mV)
OUTPUT
VOLTAGE (V)
TTL
5mV
10mV
20mV
50mV
T
A
= 25
C
V
S
=
2.5V
0V
V
IN
V+
V-
V
OUT
+
-
50K
ALD4303A/ALD4303
Advanced Linear Devices
TYPICAL PERFORMANCE CHARACTERISTICS
6
8
10
12
4
2
SUPPLY VOLTAGE (V)
OUTPUT LOW VOLTAGE
vs. SUPPLY VOLTAGE
OUTPUT LOW VOLTAGE (V)
T
A
= 25
C
I
OL
= 12mA
0.0
0.2
0.4
0.5
0.6
0.1
0.3
0
-2
-4
-6
2
6
8
10
12
4
2
SUPPLY VOLTAGE (V)
6
4
INPUT OFFSET VOLTAGE vs. SUPPLY
VOLTAGE REPRESENTATIVE SAMPLES
INPUT OFFSET VOLTAGE (mV)
T
A
= 25
C
SAMPLES
RESPONSE TIME FOR
REPRESENTATIVE SAMPLES
5
10
0
RESPONSE TIME (
s)
50
100
150
200
V
S
=
2.5V
T
A
= 25
C
td
LH
SAMPLES
RESPONSE TIME FOR
REPRESENTATIVE SAMPLES
5
10
0
RESPONSE TIME (
s)
50
100
150
200
V
S
=
2.5V
T
A
= 25
C
td
HL
10
1
100
6.0
8.0
10.0
12.0
4.0
2.0
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (
A)
T
A
= 25
C
R
L
=
-
+
V +
TOTAL SUPPLY CURRENT vs.
TOTAL SUPPLY VOLTAGE
NORMALIZED INPUT OFFSET VOLTAGE
vs. TEMPERATURE
TEMPERATURE (
C)
+3
+2
+1
0
-1
-2
-3
-55
-25
0
25
50
125
100
75
NORMALIZED INPUT OFFSET
VOLTAGE (mV)
V
CM
= 0V
V
S
=
2.5V
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