EL2252CM 데이터 시트보기 (PDF) - Elantec -> Intersil

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EL2252CM

Dual 50 MHz Comparator/Pin Receiver

Elantec -> Intersil 

EL2252C

Dual 50 MHz Comparator Pin Receiver

Simplified Schematic

One Comparator

Applications Information

The EL2252 is very easy to use and is relatively

oscillation-free but a few items must be attend-

ed The first is that both supplies should be by-

passed closely 1 mF tantalums are very good and

no additional smaller capacitors are necessary

The EL2252 requires Vb to be at least 5V to pre-

serve AC performance Va must be at least 6V

for a TTL output swing 8V for CMOS outputs

The input voltage range will be referred to the

more positive of the two inputs That is bringing

an input as negative as Vb will not cause prob-

lems it’s the other input’s level that must be con-

sidered The typical input range is a13 b12V

2252 – 19

when the supplies are g15V This range dimin-

ishes over temperature and varies with process-

ing it is wise to set power supplies such that Va

is 5V more positive than the most positive input

signal and Vb more negative than 6V below the

most negative input g12V supplies will easily

encompass all CMOS and ECL logic inputs If

the input exceeds the device’s common-mode in-

put capability the EL2252 propagation delay

and input bias current will increase Fault cur-

rents will occur with inputs a diode below Vb or

above Va No damage nor VOS shift will occur

even when fault currents within the absolute

maximum ratings

9

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