AP393A

Microsoft Word - AP393A_R7.doc

Document overview

• Manufacturer or author: garion_campbell
• PDF pages: 15

Technical content

LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS AP393A Rev. 7 1 of 15 FEBRUARY 2009 www.diodes.com © Diodes Incorporated

• 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) 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.
• 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

Ordering Information

G : Green 13 : Tape & Reel A P 3 9 3 A XX G - 13 M8 : MSOP-8L S : SOP-8L Device Package Code Packaging (Note 2) 13” Tape and Reel Quantity Part Number Suffix AP393AM8G-13 M8 MSOP-8L 2500/Tape & Reel -13 AP393ASG-13 S SOP-8L 2500/Tape & Reel -13 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 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. Features General Description

Applications

LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS AP393A Rev. 7 2 of 15 FEBRUARY 2009 www.diodes.com © Diodes Incorporated Pin Assignments MSOP-8L/ SOP-8L ( Top View ) INVERTING INPUT 1 GND AP393A NON-INVERTING INPUT 1 OUTPUT 2 OUTPUT 1 V+ INVERTING INPUT 2 NON-INVERTING INPUT 2 Pin Descriptions Pin Name Pin No. Description OUTPUT 1 1 Channel 1 Output INVERTING INPUT 1 2 Channel 1 Negative Input NON-INVERTING INPUT 1 3 Channel 1 Positive Input GND 4 Ground NON-INVERTING INPUT 2 5 Channel 2 Positive Input INVERTING INPUT 2 6 Channel 2 Negative Input OUTPUT 2 7 Channel 2 Output V+ 8 VCC

LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS AP393A Rev. 7 3 of 15 FEBRUARY 2009 www.diodes.com © Diodes Incorporated Block Diagram INVERTING INPUT 1 GND NON-INVERTING INPUT 1 OUTPUT 2 OUTPUT 1 INVERTING INPUT 2 NON-INVERTING INPUT 2 4 5 AB +-+ - V + 100μA3.5μA100μA3.5μA +INPUT -INPUT OUTPUTQ1 Q2 Q3 Q7Q8

LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS AP393A Rev. 7 4 of 15 FEBRUARY 2009 www.diodes.com © Diodes Incorporated Absolute Maximum Ratings Symbol Parameter Rating Unit VCC Supply Voltage 40 V VIN Differential Input Voltage (Note 10) 40 V VIN Input Volta ge -0.3 to +40 V ICC Input Current (VIN-0.3V) (Note 5) 50 mA PD Power Dissipation (Note 3) MSOP-8L 670 mW SOP-8L 510 Output Short-Circuit to Ground (Note 4) Continuous TOP Operating Junction Temperature Range 0 to +70 oC TST Storage Temperature Range -65 to +150 oC Recommended Operating Conditions Symbol Parameter Min Max Unit VCC Supply Voltage (Single) +2 +36 V VCC Supply Voltage (Dual Supplies, V + VS GND) ±1 ±18 V VIN Differential Input Voltage (Single) (Note 10) 0 ±36 V VIN Differential Input Voltage (Dual Supplies) (Note 10) -18 +18 V TA Operating Ambient Temperature 0 70 oC

Electrical Characteristics

( VCC = 5V, TA = 25oC, unless otherwise stated ) Symbol Parameter Conditions Min Typ. Max Unit VOFFSET Input Offset Voltage (Note 11) - 4.0 8.0 mV IOFFSET Input Offset Current I IN(+) - IIN(-) VCM = 0V - 70 150 nA IBIAS Input Bias Current IIN(+) or I IN(-) with Output In Linear Range, VCM = 0V (Note 7) - 150 400 nA Input Common Mode Voltage Range V+ = 30V (Note 8) 0 - V + -1.5 V ICC Supply Current R L = ∞ V+ = 5V - 0.4 1 mA V+ = 36V - 1 2.5 Voltage Gain RL ≥ 15kΩ, V+ = 15V VO = 1V to 11V 50 200 - V/mV Large Signal Response Time VIN = TTL Logic Swing, VREF = 1.4V, VRL = 5V, RL = 5.1kΩ - 300 - ns Response Time VRL = 5V, RL = 5.1kΩ (Note 9) - 1.3 - μs IO(Sink) Output Sink Current VIN(-) = 1V, VIN(+) = 0, VO ≤ 1.5V 6.0 16 - mA VSAT Saturation Voltage VIN(-) = 1V, VIN(+) = 0, ISINK ≤ 4mA - 250 400 mV IO(Leak) Output Leakage Current VIN(-) = 0, VIN(+) = 1V, VO = 5V - 0.1 - nA

LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS AP393A Rev. 7 5 of 15 FEBRUARY 2009 www.diodes.com © Diodes Incorporated Electrical Characteristics (Continued) ( VCC = 5V ) ( Note 6 ) Symbol Parameter Conditions Min Typ. Max Unit VOFFSET Input Offset Volta ge (Note 11) -- 9 m V IOFFSET Input Offset Current I IN(+) -IIN(-), VCM = 0V - - 180 nA IBIAS Input Bias Current IIN(+) or I IN(-) with Output In Linear Range, VCM = 0V (Note 7) - - 500 nA Input Common Mode Voltage Range V+ =30V (Note 8) 0 - V + -2.0 V VSAT Saturation Voltage VIN(-) = 1V, VIN(+) = 0, ISINK ≤ 4mA - - 700 mV IO(Leak) Output Leakage Current VIN(-) = 0, VIN(+) = 1V, VO = 30V - - 1.0 μA Differential Input Voltage Keep All VIN’s ≥ 0V (or V-, if Used), (Note 10) - - 36 V θJA Thermal Resistance Junction-to-Ambient MSOP-8L (Note 12) 208 oC/W SOP-8L (Note 12) 165 θJC Thermal Resistance Junction-to-Case MSOP-8L (Note 12) 39 oC/W SOP-8L (Note 12) 26 Notes: 3. For operating at high temperatures, the AP393A 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 ambi ent. 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 ac tion 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 negat ive, again returns to a value greater than -0.3V. 6. The AP393A temperature specifications are limited to 0°C < TOP < +70°C. 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 25°C, 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 ou tput 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=0Ω with V+ from 5V to 30V; and over the full input common-mode range (0V to V+-1.5V), at 25°C. 12. Test condition for MSOP-8L and SOP-8L: Device mounted on FR-4 substrate PC board, 2oz copper, with minimum recommended pad layout.

LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS AP393A Rev. 7 6 of 15 FEBRUARY 2009 www.diodes.com © Diodes Incorporated

Application Information

The AP393A is high gain, wide bandwidth devices, like most comparators, can easily oscillate if the output lead is inadvertentl y allowed to capacitively couple to the inputs via stray capacitance. This shows up only during the output voltage transition int ervals 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 < 10kΩ 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 fee dback 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 V DC (at 25°C). 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 voltag e within the permitted supply voltage range and there is no restriction on this voltage due to the magnitude of the voltage applied to t he 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 β 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 60Ω 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 ) VO 3.0K +VIN +VREF Basic Comparator AP393A Driving CMOS +5.0VDC 100K AP393A 1/4 MM54CXX Driving TTL AP393A 1/4 DM54XX +5VDC 10K VO 100K 100K 100K 100K 75 pF 4.3K Squarewave Oscillator 1:100KHz 1/2 AP393A

LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS AP393A Rev. 7 7 of 15 FEBRUARY 2009 www.diodes.com © Diodes Incorporated Typical Circuit (Continued) ( VCC = 5.0VDC ) Pulse Generator VO 100K 80 pF 15K +15VDC 1N914 1N914 60µs6µs -V+ 0tOt1 t2 *For large ratios of R1/R2, D1 can be omitted 1/2 AP393A Crystal Controlled Oscillator VO 200K 0.1µF 2.0K 100K200K CRYSTAL f=100KHz 1/2 AP393A +VC FREQUENCY CONTROL VOLTAGE INPUT 0.1µF 20K 20K 50K V+/2 OUTPUT2 OUTPUT1 500pF 0.01µF 3.0K 5.1K 100K 3.0K Two-Decade High Frequency VCO V+/2 1/2 AP393A 1/2 AP393A 1/2 AP393A 100K VO 3.0K +VIN +VREF Basic Comparator V*=+30VDC +250mVDC < VC < +50VDC 700Hz < fO < 100KHz 1/2 AP393A Non-Inverting Comparator with Hysteresis VO +VIN +VREF 10M 10K 1/2 AP393A

LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS AP393A Rev. 7 8 of 15 FEBRUARY 2009 www.diodes.com © Diodes Incorporated Typical Circuit (Continued) ( VCC = 5.0VDC ) Inverting Comparator with Hysteresis 3K+VIN V+ 1M VO 1/2 AP393A VO 6.2K Output Strobing STROBE INPUT* * OR LOGIC GATE WITHOUT PULL-UP RESISTOR 1/2 AP393A AND Gate f A B C 100K 100K 100K 39K +0.375V "0" "1" 1/2 AP393A Or Gate A B C 100K 100K 100K 200K +0.075V "0" "1" f1/2 AP393A Large Fan-in AND Gate A + B C 100K 10K "0" "1" D ALL DIODES 1N914 100K VOUT1/2 AP393A Limit Comparator -2RS 2RS RS 10K V+ (12VDC) LAMP

12 ESB

+VIN +VREF LOW +VREF HI 2N2222 1/2 AP393A 1/2 AP393A

LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS AP393A Rev. 7 9 of 15 FEBRUARY 2009 www.diodes.com © Diodes Incorporated Typical Circuit (Continued) ( VCC = 5.0VDC ) 5.1K Comparing Input Voltages of Opposite Polarity 2N2222100K 100K +VIN1 -VIN2 1/2 AP393A ORing the Outputs 3.0K VO 1/2 AP393A 1/2 AP393A Zero Crossing Detector (Single Power Supply) 5.1K VO 100K 100K 5.1K5.1K 1N914 VIN 10K 20M 1/2 AP393A One-Shot Multivibrator 10K VO 1N914 1M 1N914 100pF 0.001µF PW t0 t1 V1ms 1/2 AP393A Bi-Stable Multivibrator 15K VO 100K S 100K 100K 51K R +15V S R 1/2 AP393A

LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS AP393A Rev. 7 10 of 15 FEBRUARY 2009 www.diodes.com © Diodes Incorporated Typical Circuit (Continued) ( VCC = 5.0VDC ) One-Shot Multivibrator with Input Lock Out VO100pF 100K t0 t1 100K 1M +VIN 240K 62K 10M 15K560K10M 40µs 1µs +4V 1/2 AP393A 1/2 AP393A Time Delay Generator 3.0K VO3 10M 3.0K VO2 3.0K VO1 t0 t1 t2 t3 t4 t VC1 51K 51K 51K 10K 10K 10K 200K15K10K VC1 0.001µF 10M 10M t0 t4 +VIN 10K INPUT GATING SIGNAL t0 t1 t0 t2 t0 t3 1/2 AP393A 1/2 AP393A 1/2 AP393A 1/2 AP393A

LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS AP393A Rev. 7 11 of 15 FEBRUARY 2009 www.diodes.com © Diodes Incorporated Split-Supply Applications ( V+ = +15VDC and V- = -15 VDC ) 2.4K2.4K φA φB 2K8.2K 3.9K 2K 10K51K51K 5.1K 50pF 6.8K MOS Clock Driver 1/2 AP393A 1/2 AP393A 1/2 AP393A 1/2 AP393A Zero Crossing Detector VIN 5.1K 1/2 AP393A VO VIN V 5.1K 1/2 AP393A VO -5 VDC Comparator With a Negative Reference

LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS AP393A Rev. 7 12 of 15 FEBRUARY 2009 www.diodes.com © Diodes Incorporated 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

LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS AP393A Rev. 7 13 of 15 FEBRUARY 2009 www.diodes.com © Diodes Incorporated Marking Information (1) MSOP-8L AP393A ( Top view ) Y W X Part Number Logo Y : Year : 0~9 A~Z : Green 87 65 1 23 4 a~z : 27~52 week; z represents W : Week : A~Z : 1~26 week; 52 and 53 week (2) SOP-8L ( Top View ) AP393A YY WW X X Logo Part Number WW : Week : 01~52; 52 YY : Year : 08, 09,10~ G : Green X : Internal Code represents 52 and 53 week

LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS AP393A Rev. 7 14 of 15 FEBRUARY 2009 www.diodes.com © Diodes Incorporated Package Information (All Dimensions in mm) (1) Package Type: MSOP-8L 2.9/3.1 4.7/5.1 0.65Bsc. 0.22/0.38 0.05 0.15Typ. 0.4/0.8 0.25 0.95Ref. Gauge plane 0°/8° "A" DETAIL "A" 6x-0.65 Land Pattern Recommendation (Unit:mm) 8x-1.4 4.4 8x-0.45 0.05/0.15 (2) Package Type: SOP-8L 1.27typ 0.3/0.5 7°~9° 4.85/4.95 3.85/3.95 5.90/6.10 0.15/0.25 7°~9° 0.62/0.82 0.10/0.20 Gauge Plane 0.254 Seating Plane 0.35max. 45° Detail "A" Detail "A" 1.30/1.50 1.75max. Land Pattern Recommendation (Unit: mm) 6x-1.27 8x-1.55 8x-0.60 5.4 0°/8°

LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS AP393A Rev. 7 15 of 15 FEBRUARY 2009 www.diodes.com © Diodes Incorporated IMPORTANT NOTICE LIFE SUPPORT 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. 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.