AP393A LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS General Description 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) 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 - 13 Device AP393AM8G-13 AP393ASG-13 Notes: Package Green Packing M8 : MSOP-8L S : SOP-8L G : Green 13 : Tape & Reel Package Code Packaging (Note 2) M8 S MSOP-8L SOP-8L 13” Tape and Reel Quantity 2500/Tape & Reel 2500/Tape & Reel Part Number Suffix -13 -13 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. AP393A Rev. 7 1 of 15 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AP393A LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS Pin Assignments ( Top View ) OUTPUT 1 1 INVERTING INPUT 1 2 NON-INVERTING INPUT 1 3 GND 4 AP393A 8 V+ 7 OUTPUT 2 6 5 INVERTING INPUT 2 NON-INVERTING INPUT 2 MSOP-8L/ SOP-8L 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 8 VCC V + AP393A Rev. 7 2 of 15 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AP393A LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS Block Diagram OUTPUT 1 INVERTING INPUT 1 1 8 V+ 2 7 OUTPUT 2 A - NON-INVERTING INPUT 1 3 GND B + + - 6 5 4 INVERTING INPUT 2 NON-INVERTING INPUT 2 V+ 3.5μA Q2 +INPUT 100μA 3.5μA 100μA Q3 Q1 Q4 OUTPUT Q5 -INPUT Q6 Q8 AP393A Rev. 7 Q7 3 of 15 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AP393A LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS Absolute Maximum Ratings Symbol VCC VIN VIN ICC Parameter Supply Voltage Differential Input Voltage (Note 10) Input Voltage Input Current (VIN-0.3V) (Note 5) MSOP-8L SOP-8L PD Power Dissipation (Note 3) TOP TST Output Short-Circuit to Ground (Note 4) Operating Junction Temperature Range Storage Temperature Range 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 ( VCC = 5V, TA = 25oC, unless otherwise stated ) Symbol Parameter Conditions (Note 11) VOFFSET Input Offset Voltage IOFFSET Input Offset Current IIN(+) - IIN(-) VCM = 0V IIN(+) or IIN(-) with Output In IBIAS Input Bias Current Linear Range, VCM = 0V (Note 7) Input Common Mode Voltage + V = 30V (Note 8) Range V+ = 5V ICC Supply Current RL = ∞ V+ = 36V RL ≥ 15kΩ, V+ = 15V Voltage Gain VO = 1V to 11V VIN = TTL Logic Swing, Large Signal Response Time VREF = 1.4V, VRL = 5V, RL = 5.1kΩ VRL = 5V, RL = 5.1kΩ (Note 9) Response Time VIN(-) = 1V, VIN(+) = 0, IO(Sink) Output Sink Current VO ≤ 1.5V VIN(-) = 1V, VIN(+) = 0, VSAT Saturation Voltage ISINK ≤ 4mA VIN(-) = 0, VIN(+) = 1V, IO(Leak) Output Leakage Current VO = 5V AP393A Rev. 7 4 of 15 www.diodes.com Min - Typ. 4.0 70 Max 8.0 150 Unit mV nA - 150 400 nA 0 - V+ -1.5 V - 0.4 1 1 2.5 mA 50 200 - V/mV - 300 - ns - 1.3 - μs 6.0 16 - mA - 250 400 mV - 0.1 - nA FEBRUARY 2009 © Diodes Incorporated AP393A LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS Electrical Characteristics ( VCC = 5V ) ( Note 6 ) Symbol Parameter VOFFSET Input Offset Voltage IOFFSET Input Offset Current IBIAS VSAT IO(Leak) θJA θJC Notes: Input Bias Current (Continued) Conditions (Note 11) IIN(+) -IIN(-), VCM = 0V IIN(+) or IIN(-) with Output In Linear Range, VCM = 0V (Note 7) 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) MSOP-8L (Note 12) Thermal Resistance Junction-to-Ambient SOP-8L (Note 12) MSOP-8L (Note 12) Thermal Resistance Junction-to-Case SOP-8L (Note 12) Min - Typ. - Max 9 180 Unit mV nA - - 500 nA 0 - V+ -2.0 V - - 700 mV - - 1.0 μA - - 36 V 208 165 39 26 o C/W o C/W 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 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 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 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=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. AP393A Rev. 7 5 of 15 www.diodes.com FEBRUARY 2009 © Diodes Incorporated 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 < 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 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 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 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 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 ) +5.0VDC V+ +VIN 3.0K + AP393A +VREF 100K + VO AP393A - 1/4 MM54CXX Basic Comparator Driving CMOS V+ +5VDC 100K V+ 0 1:100KHz VO 75 pF 10K + 4.3K 1/2 AP393A AP393A + 1/4 DM54XX V+ 100K 100K 100K Squarewave Oscillator Driving TTL AP393A Rev. 7 6 of 15 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AP393A LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS Typical Circuit (Continued) ( VCC = 5.0VDC ) V+ R1 1M D1 1N914 * V+ 15K 200K R2 D2 100K 1N914 80 pF 6µs - tOt1 +15VDC t2 -V+ 0 V+ 0 - 0.1µF VO 1/2 AP393A VO 1/2 AP393A 1M 60µs 2.0K 100K + + 200K 1M 1M CRYSTAL f=100KHz *For large ratios of R1/R2, D1 can be omitted Crystal Controlled Oscillator Pulse Generator V+ V+ 100K 100K - 3.0K 5.1K 10 +VC FREQUENCY CONTROL VOLTAGE INPUT 500pF 0.1µF 0.01µF + 3.0K + 1/2 AP393A OUTPUT1 1/2 AP393A - V+/2 20K 50K 20K OUTPUT2 - V+/2 1/2 AP393A + Two-Decade High Frequency VCO V*=+30VDC +250mVDC < VC < +50VDC 700Hz < fO < 100KHz V+ V+ +VIN + 3K - +VREF 3.0K 1/2 AP393A 1/2 AP393A VO +VIN +VREF - VO + 10M Non-Inverting Comparator with Hysteresis Basic Comparator AP393A Rev. 7 10K 7 of 15 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AP393A LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS Typical Circuit (Continued) ( VCC = 5.0VDC ) V+ 3K - +VIN V+ VO 1/2 AP393A 1M V+ 6.2K - 1/2 AP393A + VO + STROBE INPUT * 1M 1M * OR LOGIC GATE WITHOUT PULL-UP RESISTOR Inverting Comparator with Hysteresis Output Strobing V+ V+ +0.375V 1K 100K A B C 100K +0.075V 1K 100K 1/2 AP393A f 1/2 AP393A A + B 100K V+ 0 "0" "1" 3K 200K 3K 39K C 1K 100K f + 100K 1K V+ 0 "0" "1" Or Gate AND Gate V+ V+ (12VDC) R4 3K 100K 10K +VREF HI 2RS + 100K 1/2 AP393A D1 + V 0 A "0" "1" 10K 1/2 AP393A VOUT - + RS D2 +VIN B D3 + C D4 D 1/2 AP393A 2RS ALL DIODES 1N914 +VREF LOW 2N2222 - Limit Comparator Large Fan-in AND Gate AP393A Rev. 7 LAMP 12 ESB 8 of 15 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AP393A LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS Typical Circuit (Continued) ( VCC = 5.0VDC ) V+ + +VIN1 -VIN2 100K 2N2222 VO - 5.1K - 100K 3.0K 1/2 AP393A 1/2 AP393A + + 1/2 AP393A - Comparing Input Voltages of Opposite Polarity ORing the Outputs V+ V+ + 100K 100K 0 5.1K 5.1K 5.1K t0 100pF 1M 10K - - VIN 1N914 1/2 AP393A 1N914 VO 1M 1/2 AP393A VO + + 20M 0.001µF 1ms t0 Zero Crossing Detector (Single Power Supply) t1 0 1N914 1M 10K V PW One-Shot Multivibrator V+ 51K V 0 S 100K S + 1/2 AP393A V+ 0 15K 100K + 100K R R +15V 0 VO - Bi-Stable Multivibrator AP393A Rev. 7 9 of 15 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AP393A LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS Typical Circuit (Continued) ( VCC = 5.0VDC ) V+ 100K 1M 1M 10M 15K 560K - +VIN 100K 1/2 AP393A - +4V + 1µs t0 1/2 AP393A 100pF 0 V+ 40µs 0 t1 VO + 10M 240K 62K One-Shot Multivibrator with Input Lock Out V+ 3.0K 10K 15K 10M 200K 10K + 1/2 AP393A V3 V+ VO3 0 - VC1 V 10K 1/2 AP393A 0 t0 t4 +VIN 10K + 1/2 AP393A V2 INPUT GATING SIGNAL V+ VO2 10M 51K 10K V+ V3 V2 V1 0 V+ 0 - VC1 t3 C1 0.001µF + t0 3.0K 10M 51K + V+ t0 t2 3.0K V+ + 1/2 AP393A 0 t0 t1 VO1 V1 - t0 t1 t2 t3 t4 51K t Time Delay Generator AP393A Rev. 7 10 of 15 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AP393A LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS Split-Supply Applications ( V+ = +15VDC and V- = -15 VDC ) V+ 51K 51K 2K 10K 3.9K - 2.4K 2.4K φA 1/2 AP393A + + 1/2 AP393A 8.2K 1/2 AP393A 2K - φB + 5.1K 1/2 AP393A - 50pF 6.8K V- MOS Clock Driver V+ + + VIN V+ 5.1K 1/2 AP393A VO VIN V- 5.1K 1/2 AP393A -5 VDC - VO V Zero Crossing Detector AP393A Rev. 7 + + 11 of 15 www.diodes.com Comparator With a Negative Reference FEBRUARY 2009 © Diodes Incorporated 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. 7 12 of 15 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AP393A LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS Marking Information (1) MSOP-8L ( Top view ) 8 7 Logo 6 5 YWX AP393A Part Number 1 2 3 A~Z : Green Y : Year : 0~9 W : Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week 4 (2) SOP-8L ( Top View ) 8 5 Logo Part Number AP393A YY WW X X 1 AP393A Rev. 7 G : Green YY : Year : 08, 09,10~ WW : Week : 01~52; 52 represents 52 and 53 week X : Internal Code 4 13 of 15 www.diodes.com FEBRUARY 2009 © Diodes Incorporated AP393A LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS Package Information (All Dimensions in mm) (1) Package Type: MSOP-8L 4.4 4.7/5.1 2.9/3.1 8x-0.45 8x-1.4 6x-0.65 0.25 0.05 2.9/3.1 Land Pattern Recommendation (Unit:mm) "A" 0.05/0.15 0.75/0.95 0/0.15 0.22/0.38 0.15Typ. 1 0.65Bsc. Gauge plane DETAIL "A" 0°/8 ° 0.4/0.8 0.95Ref. 0.254 0.10/0.20 3.85/3.95 5.90/6.10 (2) Package Type: SOP-8L Gauge Plane Seating Plane 0.62/0.82 Detail "A" 7°~9° 0.15/0.25 1.30/1.50 1.75max. 0.35max. 45° 7°~9° Detail "A" 0°/8° 0.3/0.5 1.27typ 4.85/4.95 5.4 8x-0.60 8x-1.55 6x-1.27 Land Pattern Recommendation (Unit: mm) AP393A Rev. 7 14 of 15 www.diodes.com FEBRUARY 2009 © Diodes Incorporated 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. 7 15 of 15 www.diodes.com FEBRUARY 2009 © Diodes Incorporated