LTC6248 datasheet(4/30 Pages) LINER

Part #	LTC6248

Description	280MHz, 2.9ns Comparator Family with Rail-to-Rail Inputs and CMOS Outputs

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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LTC6752/LTC6752-1/

LTC6752-2/LTC6752-3/

LTC6752-4

4

6752fc

For more information www.linear.com/LTC6752

elecTrical characTerisTics (V

CC = 2.5V, VDD = 2.5V, VEE = 0). The l denotes the specifications which

apply over the specified temperature range, otherwise specifications are at TA = 25°C. LE/HYST, SHDN pins floating, CL = 5pF,

VOVERDRIVE = 50mV, –IN = VCM = 300mV, +IN = –IN + VOVERDRIVE, 150mV step size unless otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

PSRR_VCC

Input Power Supply Rejection Ratio

VCM = 0.3V, VDD = 2.5V, VCC Varied from 2.45V

to 5.25V (LTC6752-2/LTC6752-3/LTC6752-4)

l

59

57

74

dB

Total Power Supply Rejection Ratio

VCM = 0.3V, VCC Varied from 2.45V to 3.5V

(LTC6752/LTC6752-1)

l

53

51

73

dB

PSRR_VDD

Output Power Supply Rejection Ratio

VCM = 0.3V, VDD Varied from 1.71V to 3.5V

(LTC6752-2/LTC6752-3/LTC6752-4)

l

56

51

71

dB

AVOL

Open Loop Gain

LTC6752-1/LTC6752-2/LTC6752-3, Hysteresis

Removed (Note 12)

6000

V/V

VOH

Output High Voltage (Amount Below

VDD (LTC6752-2/LTC5752-3/LTC6752-4),

VCC (LTC6752/LTC6752-1))

ISOURCE = 8mA

l

130

260

340

mV

VOL

Output Low Voltage (Referred to VEE)

ISINK = 8mA

l

200

340

400

mV

ISC

Output Short-Circuit Current

Source

l

16

12

30

mA

Sink

l

15

9

22

mA

IVCC

VCC Supply Current, Device On

LTC6752/LTC6752-1

l

4.5

5.0

5.9

mA

LTC6752-2/LTC6752-3/LTC6752-4

l

1.9

2.25

2.5

mA

IVDD

VDD Supply Current, Device On

LTC6752-2/LTC6752-4

l

2.6

3.2

3.4

mA

LTC6752-3

l

4.3

4.75

5.2

mA

ITOTAL

Total Supply Current, Device On

LTC6752/LTC6752-1/LTC6752-2/LTC6752-4

l

4.5

5.0

5.9

mA

LTC6752-3

l

6.2

6.65

7.7

mA

tR, tF

Rise/Fall time

10% to 90%

1.2

ns

tPD

Propagation Delay (Note 8)

VOVERDRIVE = 50mV

l

2.9

5

5.5

ns

tSKEW

Propagation Delay Skew, Rising to Falling

Transition (Note 9)

300

ps

tODD

Overdrive Dispersion (Note 8)

Overdrive Varied from 10mV to 125mV

1.8

ns

tCMD

Common Mode Dispersion

VCM Varied from VEE – 0.2V to VCC + 0.1V

240

ps

TR

Toggle Rate (Note 11)

100mVP-P Input, LTC6752/LTC6752-1/

LTC6752-2/LTC6752-4

100mVP-P Input, LTC6752-3

280

250

MHz

tJITTER

RMS Jitter

VIN = 100mVP-P,

fIN = 100MHz, Jitter BW = 10Hz – 50MHz

fIN = 61.44MHz, Jitter BW = 10Hz – 30.72MHz

fIN = 10MHz, Jitter BW = 10Hz – 5MHz

4.5

6.0

30

ps

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