LMH7220 datasheet(4/19 Pages) NSC

Part #	LMH7220

Description	High Speed Comparator with LVDS Output

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Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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+5V DC Electrical Characteristics (Continued)

Unless otherwise specified, all limits guaranteed for T

J = 25˚C, VCM = 300 mV, −50 mV < VID < +50 mV and RL = 100

Ω.

Boldface limits apply at the temperature extremes. (Note 6)

Symbol

Parameter

Conditions

Min

(Note 6)

Typ

(Note 5)

Max

(Note 6)

Units

I

S

Supply Current

Load Current Excluded

V

IN Differential = 50 mV

6.8

9

12.6

mA

+5V AC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for T

J = 25˚C, VCM = 300 mV, −50 mV < VID < +50 mV and RL = 100

Ω.

Boldface limits apply at the temperature extremes. (Note 6)

Symbol

Parameter

Conditions

Min

(Note 6)

Typ

(Note 5)

Max

(Note 6)

Units

TR

Toggle Rate

Overdrive = ±50 mV; C

L =2pF @

50% Output Swing

750

940

Mb/s

t

PDLH

Propagation Delay

t

PDLH =(tPDH +tPDL )/2

(see figure 3 application note)

Input SR = Constant

V

ID start value = -100mV

Overdrive 20 mV

3.63

ns

Overdrive 50 mV

3.09

Overdrive 100 mV

2.9

7

Overdrive 1V

2.41

t

OD-disp

Input Overdrive Dispersion

@Overdrive 20 - 100 mV

0.79

ns

@Overdrive 100 mV - 1V

0.43

t

SR-disp

Input Slew Rate Dispersion

0.05 V/ns to 1 V/ns

Overdrive 100 mV

0.20

ns

t

CM-disp

Input Common Mode Dispersion

SR = 4 V/ns; Overdrive 100 mV

V

CM =0to3V

0.21

ns

∆t

PDLH

Q to Q Time Skew

|t

PDH -tPDL | (Note 8)

Overdrive = 100 mV; C

L = 2 pF

0.09

ns

∆t

PDHL

Q to Q Time Skew

|t

PDL -tPDH | (Note 8)

Overdrive = 100 mV; C

L = 2 pF

0.07

ns

t

r

Output Rise Time (20% - 80%)

(Note 9)

Overdrive = 100 mV; C

L = 2 pF

0.59

ns

t

f

Output Fall Time (20% - 80%)

(Note 9)

Overdrive = 100 mV; C

L = 2 pF

0.55

ns

+2.7V DC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for T

J = 25˚C, VCM = 300 mV, −50 mV < VID < +50 mV and RL = 100

Ω.

Boldface limits apply at the temperature extremes. (Note 6)

Symbol

Parameter

Conditions

Min

(Note 6)

Typ

(Note 5)

Max

(Note 6)

Units

I

B

Input Bias Current

V

IN Differential = 0

−5

−7

−1.3

−0.5

µA

I

OS

Input Offset Current

V

IN Differential = 0

−500

+500

nA

TC I

OS

Input Offset Current TC

V

IN Differential = 0

±2

nA/˚C

V

OS

Input Offset Voltage

−9.5

+9.5

mV

TC V

OS

Input Offset Voltage TC

± 50

µV/˚C

VRI

Input Voltage Range

CMRR > 50 dB

−0.2

V

CC−2

V

CMRR

Common-Mode Rejection Ratio

V

CM =0toVCC−2.2V

56

70

dB

PSRR

Power Supply Rejection Ratio

63

74

dB

A

V

Open Loop Gain

59

dB

V

O

Output Offset Voltage

V

IN Differential = 50 mV

1125

1213

1325

mV

∆V

O

V

O Change Between ‘0’ and ‘1’

V

IN Differential = ± 50 mV

−25

+25

mV

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