AP393
LOW POWER LOW OFFSET VOLTAGE DUAL
COMPARATORS
Features
•
•
•
•
•
•
•
•
•
•
Wide supply
Voltage range: 2.0V to 36V
Single or dual supplies: ±1.0V to ±18V
Very low supply current drain (0.4 mA) – independent
of supply voltage
Low input biasing current: 25 nA
Low input offset current: ±5 nA
Maximum offset voltage: ±3 mV
Input common-mode voltage range includes ground
Differential input voltage range equal to the power
supply voltage
Low output saturation voltage: 250 mV at 4 mA
Output voltage compatible with TTL, DTL, ECL, MOS
and CMOS logic systems
8-pin SOP, PDIP package
General Description
The AP393 consists of two independent precision voltage
comparators with an offset voltage specification as low as 2.0 mV
max for two comparators which were designed specifically to
operate from a single power supply over a wide range of voltages.
Operation from split power supplies is also possible and the low
power supply current drain is independent of the magnitude of
the power supply voltage. These comparators also have a unique
characteristic in that the input common-mode voltage range
includes ground, even though operated from a single power
supply voltage.
Application areas include limit comparators, simple analog to
digital converters; pulse, squarewave and time delay generators;
wide range VCO; MOS clock timers; multivibrators and high
voltage digital logic gates. The AP393 is designed to directly
interface with TTL and CMOS. When operated from both plus
and minus power supplies, the AP393 will directly interface with
MOS logic where their low power drain is a distinct advantage
over standard comparators.
Advantages
•
•
•
•
•
•
High precision comparators
Reduced V
OS
drift over temperature
Eliminates need for dual supplies
Allows sensing near ground
Compatible with all forms of logic
Power drain suitable for battery operation
AP393 Rev. 3
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Diodes Incorporated
AP393
LOW POWER LOW OFFSET VOLTAGE DUAL
COMPARATORS
Ordering Information
A P
3 9 3 X X X
Package
S : SOP - 8 L
N : PDIP-8L
Lead - Free
Blank : Standard
L : Lead - Free
Packing
- U : Tube
-13 : Taping
Device
AP393S
AP393N
Package
Code
S
N
Packaging
SOP-8L
PDIP-8L
Tube
Quantity Part Number
Suffix
100
60
-U
-U
13” Tape and Reel
Quantity
Part Number
Suffix
2500/Tape & Reel
⎯
-13
⎯
Pin Assignments
(Top View )
OUTPUT 1 1
INVERTING INPUT 1 2
NON-INVERTING INPUT 1 3
GND 4
SOP-8L
8
AP393
7
6
5
V
+
OUTPUT 2
INVERTING INPUT 2
NON-INVERTING INPUT 2
(Top View )
OUTPUT 1 1
INVERTING INPUT 1 2
NON-INVERTING INPUT 1 3
GND 4
PDIP -8L
8
AP393
7
6
5
V
+
OUTPUT 2
INVERTING INPUT 2
NON-INVERTING INPUT 2
AP393 Rev. 3
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Diodes Incorporated
AP393
LOW POWER LOW OFFSET VOLTAGE DUAL
COMPARATORS
Pin Descriptions
Pin Name
OUTPUT 1
INVERTING
INPUT 1
NON-INVERT
ING INPUT 1
GND
Pin
No.
1
2
3
4
Description
Channel 1 Output
Channel 1 Negative Input
Channel 1 Positive Input
Ground
Pin Name
NON-INVERT
ING INPUT 2
INVERTING
INPUT 2
OUTPUT 2
V
+
Pin
No.
5
6
7
8
Description
Channel 2 Positive Input
Channel 2 Negative Input
Channel 2 Output
V
cc
Block Diagram
OUTPUT 1
1
8
V+
INVERTING INPUT 1
2
A
B
+ +
-
7
OUTPUT 2
NON-INVERTING INPUT 1 3
-
6
INVERTING INPUT 2
GND
4
5
NON-INVERTING INPUT 2
V
+
3.5µA
100µA
3.5µA
100µA
Q2
+INPUT
Q1
Q3
Q4
Q5
OUTPUT
-INPUT
Q6
Q8
Q7
AP393 Rev. 3
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Diodes Incorporated
AP393
LOW POWER LOW OFFSET VOLTAGE DUAL
COMPARATORS
Absolute Maximum Ratings
Symbol
V
CC
V
IN
V
IN
I
CC
P
D
T
OP
T
ST
T
Lead
( Note 10 )
Parameter
Supply Voltage
Differential Input Voltage
(Note 8)
Input Voltage
Input Current (V
IN
-0.3V)
(Note 3)
Molded DIP
Power Dissipation
(Note 1)
Metal Can
Small Outline Package
Output Short-Circuit to Ground
(Note 2)
Operating Temperature Range
Storage Temperature Range
Lead Temperature Range (Soldering, 10 sec)
Soldering Information
SOP
Vapor Phase (60 sec)
Infrared (15 sec)
ESD rating (1.5kΩ in with 100pF)
Rating
36
36
-0.3 to +36
50
780
660
510
Continuous
0 to +70
-65 to +150
+260
+215
+220
1300
Unit
V
V
V
mA
mW
o
o
C
C
o
C
o
C
V
Electrical Characteristics
Symbol
Parameter
V
OFFSET
Input Offset Voltage
I
BIAS
I
OFFSET
I
CC
( V
CC
= 5V, T
A
= 25
o
C, unless otherwise stated )
Conditions
I
O(Sink)
V
SAT
I
O(Leak)
(Note 9)
I
IN
(+) or I
IN
(-) with Output In
Linear Range, V
CM
= 0V
Input Bias Current
(Note 5)
Input Offset Current
I
IN
(+) - I
IN
(-) V
CM
= 0V
Input Common Mode Voltage Range V
+
= 30V
(Note 6)
V
+
= 5V
Supply Current
R
L
=
∞
V
+
= 36V
R
L
> 15kΩ, V
+
= 15V
Voltage Gain
V
O
= 1V to 11V
V
IN
= TTL Logic Swing,
Large Signal Response Time
V
REF
= 1.4V, V
RL
= 5V,
R
L
= 5.1kΩ
Response Time
V
RL
= 5V, R
L
= 5.1kΩ
(Note 7)
V
IN
(-) = 1V, V
IN
(+) = 0,
Output Sink Current
V
O
< 1.5V
V
IN
(-) = 1V, V
IN
(+) = 0,
Saturation Voltage
I
SINK
< 4mA
Output Leakage Current
V
IN
(-) = 0, V
IN
(+) = 1V, V
O
= 5V
Min.
-
-
-
0
-
-
50
-
-
6.0
-
-
Typ.
1.0
25
5.0
-
0.4
1
200
300
1.3
16
250
0.1
Max.
5.0
250
50
V -1.5
1
2.5
+
Unit
mV
nA
nA
V
mA
V/mV
ns
µs
mA
mV
nA
-
-
-
-
400
-
AP393 Rev. 3
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Diodes Incorporated
AP393
LOW POWER LOW OFFSET VOLTAGE DUAL
COMPARATORS
Electrical Characteristics
Symbol
Parameter
V
OFFSET
Input Offset Voltage
I
OFFSET
Input Offset Current
I
BIAS
( V
CC
= 5V )
( Note 4 )
Conditions
Min.
-
-
-
0
-
-
-
Typ.
-
-
-
-
-
-
-
Max.
9
150
400
V
+
-2.0
700
1.0
36
Unit
mV
nA
nA
V
mV
µA
V
V
SAT
I
O(Leak)
(Note 9)
I
IN
(+) -I
IN
(-), V
CM
= 0V
I
IN
(+) or I
IN
(-) with Output In
Input Bias Current
Linear Range, V
CM
= 0V
(Note
5)
Input Common Mode Voltage Range V
+
=30V
(Note 6)
V
IN
(-) = 1V, V
IN
(+) = 0, I
SINK
<
Saturation Voltage
4mA
V
IN
(-) = 0, V
IN
(+) = 1V,
Output Leakage Current
V
O
= 30V
Keep All V
IN
’s > 0V (or V
-
, if
Differential Input Voltage
Used),
(Note 8)
For operating at high temperatures, the AP393 must be derated based on a 125°C maximum junction temperature and a
thermal resistance of 170°C/W which applies for the device soldered in a printed circuit board, operating in a still air ambient.
The AP393 must be derated based on a 150°C maximum junction temperature. The low bias dissipation and the “ON-OFF”
characteristic of the outputs keeps the chip dissipation very small (P
D
<100 mW), provided the output transistors are allowed
to saturate.
+
Note 2:
Short circuits from the output to V can cause excessive heating and eventual destruction. When considering short circuits to
+
ground, the maximum output current is approximately 20 mA independent of the magnitude of V .
Note 3:
This input current will only exist when the voltage at any of the input leads is driven negative. It is due to the collector-base
junction of the input PNP transistors becoming forward biased and thereby acting as input diode clamps. In addition to this
diode action, there is also lateral NPN parasitic transistor action on the IC chip. This transistor action can cause the output
+
voltages of the comparators to go to the V voltage level (or to ground for a large overdrive) for the time duration that an input
is driven negative. This is not destructive and normal output states will re-establish when the input voltage, which is negative,
again returns to a value greater than -0.3V.
Note 4:
The AP393 temperature specifications are limited to 0°C < T
A
< +70°C.
Note 5:
The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant, independent
of the state of the output so no loading change exists on the reference or input lines.
Note 6:
The input common-mode voltage or either input signal voltage should not be allowed to go negative by more than 0.3V. The
+
upper end of the common-mode voltage range is V -1.5V at 25°C, but either or both inputs can go to 36V without damage,
+
independent of the magnitude of V .
Note 7:
The response time specified is for a 100 mV input step with 5 mV overdrive. For larger overdrive signals 300 ns can be
obtained, see typical performance characteristics section.
Note 8:
Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the
common-mode range, the comparator will provide a proper output state. The low input voltage state must not be less than
-0.3V (or 0.3V below the magnitude of the negative power supply, if used).
+
+
Note 9:
At output switch point, V
O
~ 1.4V, R
S
=0Ω with V from 5V to 30V; and over the full input common-mode range (0V to V -1.5V),
at 25°C.
Note 10:
Refer to RETS193AX for AP393 military specifications.
Note 1:
AP393 Rev. 3
5 of 15
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OCTOBER 2006
©
Diodes Incorporated
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