Datasheet LTC6702 (Analog Devices) - 8
| Fabricante | Analog Devices |
| Descripción | Tiny Micropower, Low Voltage Dual Comparators |
| Páginas / Página | 12 / 8 — APPLICATIONS INFORMATION. Level Translators. Power Supplies. TYPICAL … |
| Formato / tamaño de archivo | PDF / 369 Kb |
| Idioma del documento | Inglés |
APPLICATIONS INFORMATION. Level Translators. Power Supplies. TYPICAL APPLICATIONS. Low to High Level Translator
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LTC6702
APPLICATIONS INFORMATION
maintain micropower operation, the output stage uses a at least 1mA, a 1μF bypass capacitor is recommended. break-before-make circuit. The break interval of this circuit Pulsing the V+ supply to the comparators on and off may turns off both the pull-up and pull-down devices for tens engage the ESD protection circuitry at the V+ pin. If this of nanoseconds before activating the appropriate output occurs, current is pulled from the V+ pin through the output transistor (depends on the output transition direction). stage. Using the recommended supply bypass capacitors Any load connected to the output will charge or discharge with some series resistance in the V+ supply line will help internal capacitance during this interval. This can create a to prevent this action in pulsed supply applications. soft corner during output transitions and also decrease the propagation delay. The Typical Performance Characteristics
Level Translators
section shows this behavior under three load conditions: The level translators in the Typical Applications section unloaded, 10k to ground and 200Ω to ground. Loads to show an adjustable high-precision voltage reference V+ have a similar affect when the output is transitioning enabling the user to vary the threshold voltage. Simply from low to high. adjusting the ratio of the two resistors changes the thresh- old voltage according to the following equation:
Power Supplies
The comparator circuitry operates from a single 1.7V V = THR 0.4 1+ RF to 5.5V. A 0.1μF minimum bypass capacitor is required RG between the V+ pin and GND. When the output is sinking
TYPICAL APPLICATIONS Low to High Level Translator
5.5V LT6650 500mV IN OUT – 5.5V 24.9k 1/2 LTC6702 OUT 0V GND 2V 0.1μF FB 1μF 0V + 100k 6702 TA02 6702fa 8
APPLICATIONS INFORMATION
maintain micropower operation, the output stage uses a at least 1mA, a 1μF bypass capacitor is recommended. break-before-make circuit. The break interval of this circuit Pulsing the V+ supply to the comparators on and off may turns off both the pull-up and pull-down devices for tens engage the ESD protection circuitry at the V+ pin. If this of nanoseconds before activating the appropriate output occurs, current is pulled from the V+ pin through the output transistor (depends on the output transition direction). stage. Using the recommended supply bypass capacitors Any load connected to the output will charge or discharge with some series resistance in the V+ supply line will help internal capacitance during this interval. This can create a to prevent this action in pulsed supply applications. soft corner during output transitions and also decrease the propagation delay. The Typical Performance Characteristics
Level Translators
section shows this behavior under three load conditions: The level translators in the Typical Applications section unloaded, 10k to ground and 200Ω to ground. Loads to show an adjustable high-precision voltage reference V+ have a similar affect when the output is transitioning enabling the user to vary the threshold voltage. Simply from low to high. adjusting the ratio of the two resistors changes the thresh- old voltage according to the following equation:
Power Supplies
The comparator circuitry operates from a single 1.7V V = THR 0.4 1+ RF to 5.5V. A 0.1μF minimum bypass capacitor is required RG between the V+ pin and GND. When the output is sinking
TYPICAL APPLICATIONS Low to High Level Translator
5.5V LT6650 500mV IN OUT – 5.5V 24.9k 1/2 LTC6702 OUT 0V GND 2V 0.1μF FB 1μF 0V + 100k 6702 TA02 6702fa 8