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AP393 Datasheet(PDF) 10 Page - Diodes Incorporated |
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AP393 Datasheet(HTML) 10 Page - Diodes Incorporated |
10 / 15 page AP393 LOW POWER LOW OFFSET VOLTAGE DUAL COMPARATORS AP393 Document number: DS31006 Rev. 8 - 2 10 of 15 www.diodes.com July 2010 © Diodes Incorporated Electrical Characteristics (Continued) (VCC = 5V) (Note 5) Symbol Parameter Conditions Min Typ. Max Unit VOFFSET Input Offset Voltage (Note 10) - - 9 mV IOFFSET Input Offset Current IIN(+) -IIN(-), VCM = 0V - - 150 nA IBIAS Input Bias Current IIN(+) or IIN(-) with Output In Linear Range, VCM = 0V (Note 6) - - 400 nA Input Common Mode Voltage Range V + =30V (Note 7) 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 9) - - 36 V Notes: 2. For operating at high temperatures, the AP393 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 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 0°C < TOP < +70°C. 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 25°C, 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=0Ω with V + from 5V to 30V; and over the full input common-mode range (0V to V+-1.5V), at 25°C. |
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