ADCMP551 datasheet(4/14 Pages) AD

Part #	ADCMP551

Description	Single Supply High Speed PECL Comparators

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ADCMP551/ADCMP552/ADCMP553

Preliminary Technical Data

Rev. PrB | Page 4 of 14

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

AC PERFORMANCE (continued)

Equivalent Input Rise Time Bandwidth1

BWEQ

0 V to 1 V swing, 2 V/ns

750

MHz

Maximum Toggle Rate

>50% output swing

650

MHz

Minimum Pulse Width

PWMIN

∆tPD < 50 ps

750

ps

Unit-to-Unit Propagation Delay Skew

100

ps

POWER SUPPLY (ADCMP551/ADCMP552)

Input Supply Current

IVCCI

@ 3.3 V

12.5

16

mA

Output Supply Current

IVCCO

@ 3.3 V without load

6

9

mA

Output Supply Current

@ 3.3 V with load

62

70

mA

Input Supply Voltage

VCCI

Dual

3.135

3.3

5.25

V

Output Supply Voltage

VCCO

Dual

3.135

3.3

5.25

V

Positive Supply Differential

VCCO − VCCI

–0.2

+2.3

V

Power Dissipation

PD

Dual, without load

55

70

mW

Power Dissipation

Dual, with load

115

140

mW

DC Power Supply Rejection Ratio—VCCI

PSRRVCCI

70

dB

DC Power Supply Rejection Ratio—VCCO

PSRRVCCO

70

dB

POWER SUPPLY (ADCMP553)

Positive Supply Current

IVCC

@ 3.3 V without load

9

11

mA

Positive Supply Current

@ 3.3 V with load

35

42

mA

Positive Supply Voltage

VCC

Dual

3.135

3.3

5.25

V

Power Dissipation

PD

Dual, without load

30

40

mW

Power Dissipation

Dual, with load

60

75

mW

DC Power Supply Rejection Ratio — VCC

PSRRVCC

70

dB

HYSTERESIS (ADCMP552 Only)

Programmable Hysteresis

0

40

mV

1 Equivalent input rise time bandwidth assumes a first order input response and is calculated by the following formula: BWEQ = .22/

√(tr

COMP

2-trIN2), where trIN is the 20/80

input transition time applied to the comparator and trCOMP is the effective transition time as digitized by the comparator input.

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