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AP393A
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 (0.4mA) - independent of supply voltage Low input biasing current: 150nA Low input offset current: 70nA Low input offset voltage: 4mV Input common-mode voltage range includes ground Differential input voltage range equal to the power supply voltage Low output saturation voltage: 250mV at 4mA Output voltage compatible with TTL, DTL, ECL, MOS and CMOS logic systems MSOP-8L and SOP-8L: Available in "Green" Molding Compound (No Br, Sb) Lead Free Finish/ RoHS Compliant (Note 1)
General Description
The AP393A consists of two independent precision voltage comparators with an offset voltage specification as low as 8.0mV 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, square wave and time delay generators; wide range VCO; MOS clock timers; multivibrators and high voltage digital logic gates. The AP393A is designed to directly interface with TTL and CMOS. When operated from both plus and minus power supplies, the AP393A will directly interface with MOS logic where their low power drain is a distinct advantage over standard comparators.
Applications
* * * * * * High precision comparators Reduced VOS drift over temperature Eliminates need for dual supplies Allows sensing near ground Compatible with all forms of logic Power drain suitable for battery operation
Ordering Information
A P 3 9 3 A XX G - X
Package
M8 : MSOP-8L S : SOP-8L
Lead Free
G : Green
Packing
U : Tube 13 : Tape & Reel
13" Tape and Reel Part Number Quantity Suffix NA NA 2500/Tape & Reel -13 NA NA 2500/Tape & Reel -13
Device AP393AM8G-U AP393AM8G-13 AP393ASG-U AP393ASG-13
Notes:
Package Code M8 M8 S S
Packaging (Note 2) MSOP-8L MSOP-8L SOP-8L SOP-8L
Tube Part Number Quantity Suffix 80 -U NA NA 100 -U NA NA
1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied, see EU Directive 2002/95/EC Annex Notes. 2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf.
AP393A Rev. 3
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AP393A
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS
Pin Assignments
( Top View ) OUTPUT 1 INVERTING INPUT 1 NON-INVERTING INPUT 1 GND 1 2 3 4 AP393A 8 7 6 5 V+ OUTPUT 2 INVERTING INPUT 2 NON-INVERTING INPUT 2
MSOP-8L/ SOP-8L
Pin Descriptions
Pin Name OUTPUT 1 INVERTING INPUT 1 NON-INVERTING INPUT 1 GND NON-INVERTING INPUT 2 INVERTING INPUT 2 OUTPUT 2 V+ Pin No. 1 2 3 4 5 6 7 8 Channel 1 Output Channel 1 Negative Input Channel 1 Positive Input Ground Channel 2 Positive Input Channel 2 Negative Input Channel 2 Output VCC Description
AP393A Rev. 3
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AP393A
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS
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+
3.5A
100A
3.5A
100A
Q2 +INPUT Q1
Q3 Q4 Q5 OUTPUT
-INPUT Q6 Q8 Q7
AP393A Rev. 3
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AP393A
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS
Absolute Maximum Ratings
Symbol VCC VIN VIN ICC PD TOP TST Parameter Supply Voltage Differential Input Voltage (Note 10) Input Voltage Input Current (VIN-0.3V) (Note 5) Power Dissipation (Note 3) Output Short-Circuit to Ground (Note 4) Operating Junction Temperature Range Storage Temperature Range MSOP-8L SOP-8L Rating 40 40 -0.3 to +40 50 670 510 Continuous 0 to +70 -65 to +150 Unit V V V mA mW
o o
C C
Recommended Operating Conditions
Symbol VCC VCC VIN VIN TA Parameter Supply Voltage (Single) Supply Voltage (Dual Supplies, V+ VS GND) Differential Input Voltage (Single) (Note 10) Differential Input Voltage (Dual Supplies) (Note 10) Operating Ambient Temperature Min +2 1 0 -18 0 Max +36 18 36 +18 70 Unit V V V V o C
Electrical Characteristics
Symbol VOFFSET IBIAS IOFFSET Parameter Input Offset Voltage Input Bias Current
( VCC = 5V, TA = 25oC, unless otherwise stated )
ICC
IO(Sink) VSAT IO(Leak)
Input Offset Current Input Common Mode Voltage + V = 30V (Note 8) Range V+ = 5V Supply Current RL = V+ = 36V RL 15k, V+ = 15V Voltage Gain VO = 1V to 11V VIN = TTL Logic Swing, Large Signal Response Time VREF = 1.4V, VRL = 5V, RL = 5.1k VRL = 5V, RL = 5.1k Response Time (Note 9) VIN(-) = 1V, VIN(+) = 0, Output Sink Current VO 1.5V VIN(-) = 1V, VIN(+) = 0, Saturation Voltage ISINK 4mA VIN(-) = 0, VIN(+) = 1V, Output Leakage Current VO = 5V
Conditions (Note 11) IIN(+) or IIN(-) with Output In Linear Range, VCM = 0V (Note 7) IIN(+) - IIN(-) VCM = 0V
Min 0 50 6.0 -
Typ. 4.0 150 70 0.4 1 200 300 1.3 16 250 0.1
Max 8.0 300 125 V+ -1.5 1 2.5 400 -
Unit mV nA nA V mA V/mV ns s mA mV nA
AP393A Rev. 3
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AP393A
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS
Electrical Characteristics
Symbol VOFFSET IOFFSET IBIAS Parameter Input Offset Voltage Input Offset Current Input Bias Current
( VCC = 5V ) ( Note 6 )
Conditions (Note 11) IIN(+) -IIN(-), VCM = 0V IIN(+) or IIN(-) with Output In Linear Range, VCM = 0V (Note 7)
Min 0 -
Typ. 208 165 39 26
Max 9 150 400 V+ -2.0 700 1.0 36
Unit mV nA nA V mV A V
o
VSAT IO(Leak)
JA JC
Notes:
Input Common Mode Voltage + V =30V (Note 8) Range VIN(-) = 1V, VIN(+) = 0, Saturation Voltage ISINK 4mA VIN(-) = 0, VIN(+) = 1V, Output Leakage Current VO = 30V Keep All VIN's 0V (or V-, if Differential Input Voltage Used), (Note 10) Thermal Resistance MSOP-8L (Note 12) Junction-to-Ambient SOP-8L (Note 12) Thermal Resistance MSOP-8L (Note 12) Junction-to-Case SOP-8L (Note 12)
C/W C/W
o
3. For operating at high temperatures, the AP393A must be derated based on a 125C maximum junction temperature and a thermal resistance of 170C/W which applies for the device soldered in a printed circuit board, operating in a still air ambient. The low bias dissipation and the "ON-OFF" characteristic of the outputs keeps the chip dissipation very small (PD <100mW), provided the output transistors are allowed to saturate. 4. 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 20mA independent of the magnitude of V+. 5. 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. 6. The AP393A temperature specifications are limited to 0C < TOP < +70C. 7. 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. 8. 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 25C, but either or both inputs can go to 36V without damage, independent of the magnitude of V+. 9. The response time specified is for a 100mV input step with 5mV overdrive. For larger overdrive signals 300ns can be obtained, see typical performance characteristics section. 10. 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). 11. At output switch point, VO ~ 1.4V, RS=0 with V+ from 5V to 30V; and over the full input common-mode range (0V to V+-1.5V), at 25C. 12. Test condition for MSOP-8L and SOP-8L: Device mounted on FR-4 substrate PC board, 2oz copper, with minimum recommended pad layout.
AP393A Rev. 3
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AP393A
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS
Application Information
The AP393A is high gain, wide bandwidth devices, like most comparators, can easily oscillate if the output lead is inadvertently allowed to capacitively couple to the inputs via stray capacitance. This shows up only during the output voltage transition intervals as the comparator change states. Power supply bypassing is not required to solve this problem. Standard PC board layout is helpful as it reduces stray input-output coupling. Reducing the input resistors to < 10k reduces the feedback signal levels and finally, adding even a small amount (1.0 to 10 mV) of positive feedback (hysteresis) causes such a rapid transition that oscillations due to stray feedback are not possible. Simply socketing the IC and attaching resistors to the pins will cause input-output oscillations during the small transition intervals unless hysteresis is used. If the input signal is a pulse waveform, with relatively fast rise and fall times, hysteresis is not required. All input pins of any unused comparators should be tied to the negative supply. The bias network of the AP393A establishes a drain current independent of the magnitude of the power supply voltage over the range of from 2.0 VDC to 30 VDC. It is usually unnecessary to use a bypass capacitor across the power supply line. The differential input voltage may be larger than V+ without damaging the device (Note 10). Protection should be provided to prevent the input voltages from going negative more than -0.3 VDC (at 25C). An input clamp diode can be used as shown in the applications section. The output of the AP393A is the uncommitted collector of a grounded-emitter NPN output transistor. Many collectors can be tied together to provide an output OR'ing function. An output pull-up resistor can be connected to any available power supply voltage within the permitted supply voltage range and there is no restriction on this voltage due to the magnitude of the voltage applied to the + V terminal of the AP393A package. The output can also be used as a simple SPST switch to ground (when a pull-up resistor is not used). + The amount of current the output device can sink is limited by the drive available (which is independent of V ) and the of this device. When the maximum current limit is reached (approximately 16mA), the output transistor will come out of saturation and the output voltage will rise very rapidly. The output saturation voltage is limited by the approximately 60 rSAT of the output transistor. The low offset voltage of the output transistor (1.0 mV) allows the output to clamp essentially to ground level for small load currents.
Typical Circuit
( VCC = 5.0VDC )
V+
+5.0VDC
+VIN
+ AP393A
3.0K VO
+ AP393A -
100K
+VREF
-
1/4 MM54CXX
Basic Comparator
+5VDC
Driving CMOS
V+ 4.3K V+ 0 1:100KHz VO
100K
+ AP393A
10K
75 pF
1/2 AP393A
1/4 DM54XX
+
V+ 100K 100K 100K
-
Driving TTL
Squarewave Oscillator
AP393A Rev. 3
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AP393A
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS
Typical Circuit
( Continued ) ( VCC = 5.0VDC )
V+ R1 1M D1 1N914 * 15K
200K
V+
R2 D2 100K 1N914 80 pF 6s VO 60s tOt1 t2 -V+ 0
100K
2.0K V+ 0 VO
1/2 AP393A
1M +15VDC
0.1F
1/2 AP393A +
+
1M 1M *For large ratios of R1/R2, D1 can be omitted
200K CRYSTAL f=100KHz
Pulse Generator
V+
Crystal Controlled Oscillator
V+ 100K 3.0K 5.1K 0.01F
100K
10 +VC FREQUENCY CONTROL VOLTAGE INPUT 50K 0.1F
500pF
1/2 AP393A +
+ 1/2 AP393A -
3.0K OUTPUT1
V+/2 20K 20K
OUTPUT2
1/2 AP393A +
V+/2
Two-Decade High Frequency VCO
V*=+30VDC +250mVDC < VC < +50VDC 700Hz < fO < 100KHz
V+
V+
+VREF
+VIN
1/2 AP393A
3K VO
+ 1/2 AP393A
3.0K VO
+VIN
+VREF
10K
+
10M
-
Basic Comparator
Non-Inverting Comparator with Hysteresis
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AP393A Rev. 3
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AP393A
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS
Typical Circuit
( Continued ) ( VCC = 5.0VDC )
V+
V+
+VIN
1/2 AP393A
3K
VO
6.2K VO * STROBE INPUT
1/2 AP393A
+
V+
1M
+
1M 1M
* OR LOGIC GATE WITHOUT PULL-UP RESISTOR
Inverting Comparator with Hysteresis
V+
Output Strobing
V+
39K +0.375V 1K 100K A B C 100K 100K 1K
3K
200K +0.075V 1K 100K A B C V+ 0 "0" "1" 100K 100K 1K
3K
1/2 AP393A +
f
1/2 AP393A +
f
V+ 0 "0" "1"
AND Gate
V+
Or Gate
V+ (12VDC)
100K 10K 100K
R4 3K
+VREF HI
2RS
+ 1/2 AP393A -
1/2 AP393A
VOUT
RS +VIN
10K LAMP 12 ESB
V+ 0 "0" "1"
D1 A D2 B D3 C D4 D
+
+ 1/2 AP393A
2RS +VREF LOW 2N2222
ALL DIODES 1N914
-
Large Fan-in AND Gate
Limit Comparator
AP393A Rev. 3
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AP393A
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS
Typical Circuit
( Continued ) ( VCC = 5.0VDC )
V+
+
100K 100K 2N2222 5.1K
3.0K VO
1/2 AP393A -
+VIN1 -VIN2
1/2 AP393A
+
+
1/2 AP393A -
Comparing Input Voltages of Opposite Polarity
V
+
ORing the Outputs
V+ +
100K 5.1K 5.1K VIN 1N914
100K 5.1K
0
t0
100pF 1N914
1M
10K
1M
VO
1/2 AP393A +
20M
1/2 AP393A +
0.001F 1M 1N914
VO V t1 0
1ms t0
PW
10K
Zero Crossing Detector (Single Power Supply)
V+
One-Shot Multivibrator
51K V+ 0 V+ 0 100K R S 100K 100K
15K S +15V 0
+ 1/2 AP393A -
R VO
Bi-Stable Multivibrator
AP393A Rev. 3
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AP393A
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS
Typical Circuit
( Continued ) ( VCC = 5.0VDC )
V+
100K +VIN
1M 100K
1M
10M
560K
15K 40s t0 VO t1 V+ 0
1/2 AP393A +
100pF
+4V 1s 0
1/2 AP393A +
10M 240K 62K
One-Shot Multivibrator with Input Lock Out
V+
3.0K 10K 15K 200K 10K 10M
+ 1/2 AP393A
V+ VO3 V+ 0 3.0K t0 t3
V3
V+ 0 t0 t4 +VIN INPUT GATING SIGNAL 10K VC1 51K 10K 10M
1/2 AP393A +
+ 1/2 AP393A
V+ VO2 V+ 0 3.0K V+ t0 t2
C1 V2
0.001F
51K V+ V3 VC1 V2 V1 0 t0 t1 t2 t3 t4 t 51K 10K 10M
+ 1/2 AP393A
VO1
0
t0 t1
V1
-
Time Delay Generator
AP393A Rev. 3
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AP393A
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS
Split-Supply Applications
( V+ = +15VDC and V- = -15 VDC )
V+
51K
51K
10K
2K
3.9K
1/2 AP393A +
8.2K 2K
2.4K
2.4K
+ 1/2 AP393A -
A
1/2 AP393A
B
+
5.1K
1/2 AP393A -
50pF
6.8K
V-
MOS Clock Driver
V+
V+
+ VIN
+ 1/2 AP393A V-
5.1K VO
+ VIN -5 VDC
+ 1/2 AP393A V
5.1K VO
Zero Crossing Detector
Comparator With a Negative Reference
AP393A Rev. 3
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AP393A
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS
Typical Characteristics
Supply Current Input Current
Response Time for Various Input Overdrives--Negative Transition
Response Time for Various Input Overdrives--Positive Transition
Output Saturation Voltage
AP393A Rev. 3
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AP393A
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS
Marking Information
(1) MSOP-8L
( Top View )
8 Logo Part Number 5 A~Z : Green package YMX Month : A~L=01~12 Year : "7" = 2007 "8" = 2008
~
AP393A
1 4
(2) SOP-8L
( Top View )
8 5
Logo Part No. AP393A YY WW X X
1 4
G : Green Internal code Xth week : 01~52 Year : "07" = 2007 "08" = 2008
~
AP393A Rev. 3
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AP393A
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS
Package Information
(1) Package Type: MSOP-8L
(All Dimensions in mm)
2.95/3.05
8x-0.45 4.8/5.0 4.4 6x-0.65 8x-1.4 Land Pattern Recommendation (Unit:mm) "A" 0.25 Gauge plane 0.95Ref.
5.79/6.20 3.70/4.10
1 0.15Typ. 0.75/0.95 0/0.15 0.65Bsc. 0.3 2.95/3.05
0.05
DETAIL "A"
(2) Package Type: SOP-8L
0/8
0.254 0.38/1.27
0.4/0.8
0.08/0.25
Gauge Plane Seating Plane
Detail "A"
7~9 1.30/1.50 1.75max. 0.20typ
0.35max. 45
7~9
Detail "A"
3.70/4.10
1.27typ 4.80/5.30
0.3/0.5
0.78
8x-0.60 5.4 6x-1.27 8x-1.55
Land Pattern Recommendation (Unit: mm)
AP393A Rev. 3
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AP393A
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS
IMPORTANT NOTICE Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages. LIFE SUPPORT Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the President of Diodes Incorporated.
AP393A Rev. 3
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