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AP393
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS Description
The AP393 consists of two independent precision voltage comparators with an offset voltage specification as low as 2.0mV 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, 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.
Pin Assignments
( Top View ) OUTPUT 1 1 2 3 4 SOP-8L GND 8 AP393 7 6 5 V+ OUTPUT 2 INVERTING INPUT 2 NON-INVERTING INPUT 2
INVERTING INPUT 1 NON-INVERTING INPUT 1
( Top View ) OUTPUT 1 INVERTING INPUT 1 NON-INVERTING INPUT 1 GND 1 2 3 4 PDIP-8L AP393 8 7 6 5 V+ OUTPUT 2 INVERTING INPUT 2 NON-INVERTING INPUT 2
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: 25nA Low input offset current: 5nA Maximum offset voltage: 3mV 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 Lead Free packages: SOP-8L and PDIP-8L SOP-8L and PDIP-8L: Available in "Green" Molding Compound (No Br, Sb) Lead Free Finish/RoHS Compliant (Note 1)
Application
* * * * * * 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
Notes:
1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html.
AP393
Document number: DS31006 Rev. 8 - 2
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AP393
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS Typical Circuit (Vcc=5.0VDC)
+5.0VDC
V+
+VIN
+ AP393
3.0K
+
VO
100K
AP393 1/4 MM54CXX
+VREF
-
Basic Comparator
Driving CMOS
V+
+5VDC
100K 75 pF
4.3K V+ 0 1:100kHz VO
+ AP393
10K
1/2 AP393
1/4 DM54XX
+
100K V+ 100K 100K
-
Driving TTL
Squarewave Oscillator
AP393
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AP393
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS Typical Circuit (Continued) (Vcc=5.0VDC)
V+ R1 1M D1 1N914 * 15K
V+
200K
R2 D2 100K 1N914 80 pF 6s VO -V 60s 0 t2 tO t1
+
100K
2.0K V+ 0 VO
1/2 AP393
1M +15VDC
0.1F
1/2 AP393 +
+
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 V+/2
100K
10 +VC FREQUENCY CONTROL VOLTAGE INPUT 50K 0.1F
500pF
1/2 AP393 +
+ 1/2 AP393 -
3.0K OUTPUT1
20K 20K OUTPUT2
1/2 AP393 +
V+/2
Two-Decade High Frequency VCO
V*=+30VDC +250mVDC < VC < +50VDC 700Hz < fO < 100KHz
V+
V
+
+VIN
+ 1/2 AP393
3.0K VO
+VREF
1/2 AP393
3K VO
+VIN
10K
+
10M
+VREF
-
Basic Comparator
Non-Inverting Comparator with Hysteresis
AP393
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AP393
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS Typical Circuit (Continued) (Vcc=5.0VDC)
V+
V+
+VIN
1/2 AP393
3K
VO
6.2K VO * STROBE INPUT
1/2 AP393
+
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
f
3K
1/2 AP393 +
A B C V+ 0
1/2 AP393 +
f
100K 100K 100K 1K "0" "1"
V+ 0 "0" "1"
AND Gate
V+
Or Gate
V+ (12VDC)
R4 3K
100K 10K 100K
+VREF HI
2RS
+ 1/2 AP393
1/2 AP393
VOUT
10K LAMP 12 ESB
V+ 0 "0" "1"
D1 A B D3 C D4 D ALL DIODES 1N914 D2
RS +VIN
+
+ 1/2 AP393
+VREF LOW 2RS 2N2222
-
Large Fan-in AND Gate
Limit Comparator
AP393
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AP393
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS Typical Circuit (Continued) (Vcc=5.0VDC)
V+
+
100K 100K 2N2222 5.1K
3.0K VO
1/2 AP393 -
+VIN1 -VIN2
1/2 AP393
+
+
1/2 AP393 -
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 AP393 +
20M
1/2 AP393 +
0.001F 1M 1N914
VO 1ms PW t0 t1
10K
Zero Crossing Detector (Single Power Supply)
One-Shot Multivibrator
V+
51K V+ 0 V+ 0 100K R S 100K 100K
15K S +15V 0
+ 1/2 AP393 -
R VO
Bi-Stable Multivibrator
AP393
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AP393
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 AP393 +
100pF
+4V 1s 0
1/2 AP393 +
10M 240K 62K
One-Shot Multivibrator with Input Lock Out
V+
3.0K 10K 15K 200K 10K 10M
+ 1/2 AP393
V+ VO3 V+ 0 3.0K t0 t3
V3
V+ 0 t0 t4 +VIN INPUT GATING SIGNAL 10K VC1 51K 10K 10M
1/2 AP393 +
+ 1/2 AP393
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 AP393
VO1
0
t0 t1
V1
-
Time Delay Generator
AP393
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AP393
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 AP393 +
8.2K 2K
2.4K
2.4K
+ 1/2 AP393 -
A
1/2 AP393
B
+
5.1K
1/2 AP393 -
50pF
6.8K
V-
MOS Clock Driver
V+ V+
+ VIN
+ 1/2 AP393 V-
5.1K VO
+ VIN -5 VDC
+ 1/2 AP393 V
5.1K VO
Zero Crossing Detector
Comparator With a Negative Reference
AP393
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AP393
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS Functional Block Diagram
1
OUTPUT 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
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 # 1 2 3 4 5 6 7 8 Description Channel 1 Output Channel 1 Negative Input Channel 1 Positive Input Ground Channel 2 Positive Input Channel 2 Negative Input Channel 2 Output VCC
AP393
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AP393
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS Absolute Maximum Ratings
Symbol VCC VIN VIN ICC PD Parameter Supply Voltage Differential Input Voltage (Note 9) Input Voltage Input Current (VIN-0.3V) (Note 4) Power Dissipation (Note 2) Output Short-Circuit to Ground (Note 3) Operating Junction Temperature Range Storage Temperature Range PDIP-8L SOP-8L Rating 36 36 -0.3 to +36 50 780 510 Continuous 0 to +70 -65 to +150 Unit V V V mA mW
o o
TOP TST
C C
Electrical Characteristics (VCC = 5V, TA = 25oC, unless otherwise stated)
Symbol VOFFSET IBIAS IOFFSET Parameter Input Offset Voltage Input Bias Current Input Offset Current Input Common Mode Voltage Range Supply Current Voltage Gain Large Signal Response Time Response Time IO(Sink) VSAT IO(Leak) Output Sink Current Saturation Voltage Output Leakage Current Conditions (Note 10) IIN(+) or IIN(-) with Output In Linear Range, VCM = 0V (Note 6) IIN(+) - IIN(-) VCM = 0V V = 30V (Note 7) V = 5V V+ = 36V RL > 15k, V+ = 15V VO = 1V to 11V VIN = TTL Logic Swing, VREF = 1.4V, VRL = 5V, RL = 5.1k VRL = 5V, RL = 5.1k (Note 8) VIN(-) = 1V, VIN(+) = 0, VO < 1.5V VIN(-) = 1V, VIN(+) = 0, ISINK < 4mA VIN(-) = 0, VIN(+) = 1V, VO = 5V RL =
+ +
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 2.5 400 +
Unit mV nA nA V mA V/mV ns s mA mV nA
ICC
AP393
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AP393
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS Electrical Characteristics (Continued)
(VCC = 5V) (Note 5) Symbol Parameter VOFFSET Input Offset Voltage IOFFSET Input Offset Current IBIAS Input Bias Current Input Common Mode Voltage Range VSAT IO(Leak) Saturation Voltage Output Leakage Current Differential Input Voltage
Notes:
Conditions (Note 10) IIN(+) -IIN(-), VCM = 0V IIN(+) or IIN(-) with Output In Linear Range, VCM = 0V (Note 6) V+ =30V (Note 7) VIN(-) = 1V, VIN(+) = 0, ISINK < 4mA VIN(-) = 0, VIN(+) = 1V, VO = 30V Keep All VIN's > 0V (or V-, if Used), (Note 9)
Min 0 -
Typ. -
Max 9 150 400 V+ -2.0 700 1.0 36
Unit mV nA nA V mV A V
2. For operating at high temperatures, the AP393 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 + 3. 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 . 4. 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. 5. The AP393 temperature specifications are limited to 0C < TOP < +70C. 6. 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. 7. 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 . 8. 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. 9. 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). + + 10. 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.
AP393
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AP393
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS Typical Performance Characteristics
Supply Current Input Current
Response Time for Various Input Overdrives-- Negative Transition
Response Time for Various Input Overdrives-- Positive Transition
Output Saturation Voltage
AP393
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AP393
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS Application Information
The AP393 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 AP393 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 11). 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 AP393 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 AP393 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.
AP393
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AP393
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS Ordering Information
AP 3 9 3 X X - X
Package S : SOP-8L N : PDIP-8L
Lead Free L : Lead Free G : Green
Tube Quantity Part Number Suffix NA NA NA NA 60 -U 60 -U
Packing U : Tube 13 : Tape & Reel
13" Tape and Reel Part Number Quantity Suffix 2500/Tape & Reel -13 2500/Tape & Reel -13 NA NA NA NA
Device
Lead-free
Package Code S S N N
Packaging (Note 11) SOP-8L SOP-8L PDIP-8L PDIP-8L
Lead-free
AP393SL-13 AP393SG-13 AP393NL-U AP393NG-U
Notes:
11. 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.
Marking Information
(1) SOP-8L
(Top View) 8 Logo Part Number 7 6 5 YY : Year : 08, 09,10~ WW : Week : 01~52; 52 represents 52 and 53 week X : Internal Code G : Green L : Lead Free 4
AP393
YY WW X X
1
2
3
(2) PDIP-8L
(Top View) 8 Logo Part Number 7 6 5 YY : Year : 08, 09,10~ WW : Week : 01~52; 52 represents 52 and 53 week X : Internal Code G : Green L : Lead Free 4
AP393
YY WW X X
1
2
3
AP393
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AP393
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS Package Outline Dimensions (All Dimensions in mm)
(1) Package type: SOP- 8L
3.85/3.95
5.90/6.10
0.10/0.20
0.254 0.62/0.82
Gauge Plane Seating Plane
Detail "A"
7~9 1.30/1.50 1.75max. 0.15/0.25
0.35max. 45
7~9
Detail "A"
0/8
1.27typ 4.85/4.95
0.3/0.5
8x-0.60 5.4 6x-1.27 8x-1.55
Land Pattern Recommendation (Unit: mm)
(2) Package type: PDIP- 8L
AP393
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AP393
LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS
IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or trademark rights, nor the rights of others. Any Customer or user of this document or products described herein 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 Diodes Incorporated website, harmless against all damages. Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel. Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application. Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings noted herein may also be covered by one or more United States, international or foreign trademarks. LIFE SUPPORT Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user. B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness.
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. Copyright (c) 2010, Diodes Incorporated www.diodes.com
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