Data Sheet
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS
AZ393/393C
General Description
The AZ393/393C series consists of two independent
precision voltage comparators with an offset voltage
specification as low as 1mV. The input common mode
voltage range of these comparators includes ground,
even when operated from a single power supply volt-
age. Operation from split power supplies is also possi-
ble and the low power supply current drain is
independent of the magnitude of the power supply
voltage.
The AZ393/393C series is designed to directly inter-
face with TTL and CMOS. AZ393C has more
stringent input offset voltage than AZ393.
Features
·
Wide Supply Voltage Range
- Single Supply: 2.0V to 18V
- Dual Supplies:
±1.0V
to
±9V
Very Low Supply Current Drain: 0.4mA
- Independent of Supply Voltage
Low Input Bias Current: 25nA (Typical)
Low Input Offset Current:
±5nA
(Typical)
Low Input Offset Voltage:
±1mV
(Typical)
Input Common Mode Voltage Range Includes
Ground
Differential Input Voltage Range Equals to the
Power Supply Voltage
Low Output Saturation Voltage: 250mV at 4mA
Open Collector Output
·
·
·
·
·
·
·
·
The AZ393/393C series can be widely used in applica-
tions such as battery charger, cordless telephone,
switching power supply, DC-DC module and PC
motherboard.
The AZ393/393C series are available in standard pack-
ages of DIP-8 and SOIC-8.
Applications
·
·
·
·
·
·
Battery Charger
Cordless Telephone
Switching Power Supply
DC-DC Module
PC Motherboard
Communication Equipment
SOIC-8
DIP-8
Figure 1. Package Types of AZ393/393C
Aug. 2006 Rev. 1. 2
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BCD Semiconductor Manufacturing Limited
Data Sheet
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS
AZ393/393C
Pin Configuration
M Package/P Package
(SOIC-8/DIP-8)
1
2
3
4
8
7
6
5
OUTPUT1
INPUT1-
INPUT1+
GND
V
CC
OUTPUT2
INPUT2-
INPUT2+
Top View
Figure 2. Pin Configuration of AZ393/393C
Functional Block Diagram
V
CC
3.5µA
100µA
3.5µA
100µA
+INPUT
Q2
Q1
Q3
Q4
OUTPUT
-INPUT
Q7
Q8
Q5
Q6
Figure 3. Functional Block Diagram of AZ393/393C
(Each Comparator)
Aug. 2006 Rev. 1. 2
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BCD Semiconductor Manufacturing Limited
Data Sheet
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS
AZ393/393C
Ordering Information
AZ393
-
E1: Lead Free
Blank: Tin Lead
TR: Tape and Reel
Blank: Tube
Circuit Type
Blank: AZ393
C: AZ393C
Package
M: SOIC-8
P: DIP-8
Package
Input Offset Voltage
5mV
Part Number
Tin Lead
AZ393M
AZ393MTR
AZ393CM
AZ393CMTR
AZ393P
AZ393CP
Lead Free
AZ393M-E1
AZ393MTR-E1
AZ393CM-E1
AZ393CMTR-E1
AZ393P-E1
AZ393CP-E1
Marking ID
Tin Lead
AZ393M
AZ393M
393CM
393CM
AZ393P
AZ393CP
Lead Free
AZ393M-E1
AZ393M-E1
393CM-E1
393CM-E1
AZ393P-E1
AZ393CP-E1
Packing Type
Tube
Tape & Reel
Tube
Tape & Reel
Tube
Tube
SOIC-8
Maximum
Value
5mV
2mV
2mV
DIP-8
Maximum
Value
5mV
2mV
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
Aug. 2006 Rev. 1. 2
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BCD Semiconductor Manufacturing Limited
Data Sheet
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS
AZ393/393C
Absolute Maximum Ratings (Note 1)
Parameter
Supply Voltage
Differential Input Voltage
Input Voltage
Input Current (V
IN
< -0.3V) (Note 2)
Power Dissipation
(T
A
=25
o
C)
Output Short Circuit to Ground
Operating Junction Temperature
T
J
T
STG
T
LEAD
Symbol
V
CC
V
ID
V
IN
I
IN
Value
20
20
-0.3 to 20
50
DIP-8
780
660
150
Unit
V
V
V
mA
mW
P
D
SOIC-8
Continuous
o
C
Storage Temperature Range
Lead Temperature (Soldering, 10 seconds)
-65 to 150
260
o
C
o
C
Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to
the device. These are stress ratings only, and functional operation of the device at these or any other conditions
beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Max-
imum Ratings" for extended periods may affect device reliability.
Note 2: 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 out-
put states will re-establish when the input voltage, which was negative, again returns to a value greater than -0.3
V
DC
(at 25
o
C).
Recommended Operating Conditions
Parameter
Supply Voltage
Operating Temperature Range
Symbol
V
CC
T
A
Min
2
-40
Max
18
85
Unit
V
o
C
Aug. 2006 Rev. 1. 2
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BCD Semiconductor Manufacturing Limited
Data Sheet
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS
AZ393/393C
Electrical Characteristics
V
CC
=5V, GND=0V, T
A
=25
o
C, unless otherwise specified.
Parameter
Input Offset Voltage
Conditions
AZ393
(Note 3)
AZ393C
Min
Typ
1.0
1.0
25
5.0
Max
5.0
2.0
250
50
V
CC
- 1.5
Unit
mV
Input Bias Current
Input Offset Current
Input Common Mode
Voltage Range
Supply Current
I
IN
+ or I
IN
- with output in linear range,
V
CM
=0V, (Note 4)
I
IN
+-I
IN
-, V
CM
=0V
V
CC
=15V (Note 5)
R
L
=∞, V
CC
=5V
R
L
=∞, V
CC
=18V
R
L
≥15KΩ,
V
CC
=15V, V
O
=1V to 11V
V
IN
=TTL logic swing, V
REF
=1.4V,
V
RL
=5V, R
L
=5.1kΩ
V
RL
=5V, R
L
=5.1kΩ, (Note 6)
V
IN
-=1V, V
IN
+=0, V
O
≤
1.5V
V
IN
-=1V, V
IN
+=0, I
SINK
≤
4mA
V
IN
-=0, V
IN
+=1V, V
O
=5V
6.0
50
0
nA
nA
V
0.4
1.0
200
300
1.3
16
250
0.1
1.0
2.5
mA
Voltage Gain
Large Signal Response
Time
Response Time
Output Sink Current
Saturation Voltage
Output Leakage Current
V/mV
ns
µ
s
mA
400
mV
nA
Note 3: At output switch point, V
O
=1.4V, R
S
=0 with V
CC
from 5V to 15V, and over the full common-mode range
(0V to V
CC
-1.5V), at 25
o
C.
Note 4: The direction of the input current is out of the PNP input stage. This current is essentially constant, inde-
pendent of the state of the output, so no loading charge exists on the reference of input lines.
Note 5: The input common-mode voltage of 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
CC
-1.5V, but either or both inputs can go to
+18V without damage, independent of the magnitude of V
CC
.
Note 6: The response time specified is a 100mV input step with 5mV overdrive. For large overdrive signals 300ns
can be obtained.
Aug. 2006 Rev. 1. 2
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BCD Semiconductor Manufacturing Limited
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