MAX900AEWP 데이터 시트보기 (PDF) - Maxim Integrated

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MAX900AEWP

Low-Cost / Ultra-Small / Single/Dual/Quad Single-Supply Comparators

Maxim Integrated 

High-Speed, Low-Power Voltage Comparators

OUTPUT

1V/div

OUTPUT

1V/div

INPUT

10mV/div

5ns/div

Figure 6. Response to 50MHz Sine Wave

+1.25V

VREF

MX7228

OCTAL

8-BIT

DAC

VDAC1

MSB

D7

8-BIT

DATA

INPUT

LSB

D1

8x8

DATA

LATCH

IN1

VOUT1

UNDER

LIMIT

OVER

LIMIT

IN2

IN3

UNDER

LIMIT

IN4

MAX901

UNDER

LIMIT

IN5

UNDER

LIMIT

IN6

UNDER

LIMIT

INPUT

10mV/div

5ns/div

Figure 7. Response to 100MHz Sine Wave Photo

Typical Application

Programmed, Variable-Alarm Limits

By combining two quad analog comparators with an

octal 8-bit D/A converter (the MX7228), several alarm

and limit-defect functions can be performed simultane-

ously without external adjustments

The MX7228’s internal latches allow the system

processor to set the limit points for each comparator

independently and update them at any time. Set the

upper and lower thresholds for a single transducer by

pairing the D/A converter and comparator sections.

A0

A1

CONTROL

LOGIC

A2

VDAC8

IN7

VOUT8

IN8

MAX901

OVER

LIMIT

OVER

LIMIT

Figure 8. Alarm Circuit Level Monitors Eight Separate Inputs

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