LT1713IMS8 데이터 시트보기 (PDF) - Linear Technology

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LT1713IMS8

Single/Dual, 7ns, Low Power, 3V/5V/±5V Rail-to-Rail Comparators

Linear Technology 

LT1713/LT1714

APPLICATIO S I FOR ATIO

Hysteresis

Another useful technique to avoid oscillations is to provide

positive feedback, also known as hysteresis, from the

output to the input. Increased levels of hysteresis, how-

ever, reduce the sensitivity of the device to input voltage

levels, so the amount of positive feedback should be

tailored to particular system requirements. The

LT1713/LT1714 are completely flexible regarding the ap-

plication of hysteresis, due to rail-to-rail inputs and the

complementary outputs. Specifically, feedback resistors

can be connected from one or both outputs to their

corresponding inputs without regard to common mode

considerations. Figure 2 shows several configurations.

VIN

+

LT1713

–

50k

50Ω

Q

50k

100k

50Ω

VIN

+

Q

50Ω

VIN+

+

LT1713

Q

VREF

–

VIN– 50Ω

LT1713

–

V+ = 5V

V– = –5V

VHYST = 5mV

(ALL 3 CASES)

Q

100k

Figure 2. Various Configurations for Introducing Hysteresis

Q

Q

171314 F02

10

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