LTC6752-2_15 datasheet, PDF - EEWORLD Datasheet

FeaTures

n

LTC6752/LTC6752-1/

LTC6752-2/LTC6752-3/LTC6752-4

280MHz, 2.9ns Comparator

Family with Rail-to-Rail Inputs

and CMOS Outputs

DescripTion

The

LTC

®

6752

is a family of very high speed comparators

capable of supporting toggle rates up to 280MHz. These

comparators exhibit low propagation delays of 2.9ns, and

fast rise/fall times of 1.2ns. There are a total of 5 members

in the LTC6752 family, with different options for separate

input and output supplies, shutdown, output latch, adjust-

able hysteresis, complementary outputs, and package.

The LTC6752 comparators have rail-to-rail inputs that

operate from 2.45V, up to 3.5V or 5.25V, depending on

the option. The outputs are CMOS and the separate supply

options can operate down to 1.71V, allowing for directly

interfacing to 1.8V logic devices.

The low propagation delay of only 2.9ns combined with

low dispersion of only 1.8ns (10mV to 125mV overdrive

variation) makes these comparators an excellent choice

for critical timing applications. Similarly, the fast toggle

rate and the low jitter of 4.5ps RMS (100mV

P-P

, 100MHz

input) make the LTC6752 family ideally suited for high

frequency line driver and clock recovery circuits.

L,

LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

n

Very High Toggle Rate: 280MHz

Low Propagation Delay: 2.9ns

Rail-to-Rail Inputs Extend Beyond Both Rails

Output Current Capability: ±22mA

Low Quiescent Current: 4.5mA

Features within the LTC6752 Family:

n

2.45V to 5.25V Input Supply and 1.71V to 3.5V

Output Supply (Separate Supply Option)

n

2.45V to 3.5V Supply (Single Supply Option)

n

Shutdown Pin for Reduced Power

n

Output Latch and Adjustable Hysteresis

n

Complementary Outputs

Packages: TSOT-23, SC70, MSOP 3mm × 3mm QFN

,

Direct Replacement for ADCMP60X Family

Operating Temperature Range: –40°C to 125°C

applicaTions

n

Clock and Data Recovery

Level Shifting

High Speed Data Acquisition Systems

Window Comparators

High Speed Line Receivers

Fast Crystal Oscillators

Time of Flight Measurements

Time Domain Reflectometry

Typical applicaTion

High Speed Differential Line Receiver with Excellent

Common Mode Rejection

SMALL DIFFERENTIAL SIGNAL WITH

LARGE COMMON MODE COMPONENT

V

CC

= 5V

+IN

500mV/DIV

Q

–IN +IN

+

–

–IN

V

DD

= 2.7V

Q

LTC6752-2

V

EE

6752 T01a

50ns/DIV

6752 T01a

6752fb

For more information

www.linear.com/LTC6752

1

LTC6752/LTC6752-1/

LTC6752-2/LTC6752-3/LTC6752-4

absoluTe MaxiMuM raTings

(Note 1)

Total Supply Voltage (V

CC

to V

EE

)

(LTC6752-2/LTC6752-3/LTC6752-4)....................5.5V

(LTC6752/LTC6752-1) ..........................................3.6V

Total Supply Voltage (V

DD

to V

EE

) ............................3.6V

Input Current (+IN, –IN,

SHDN, LE/HYST)

(Note 2)................................................................ ±10mA

Output Current (Q,

Q)

(Note 3) ............................ ±50mA

Specified Temperature Range (Note 4)

LTC6752I .............................................–40°C to 85°C

LTC6752H .......................................... –40°C to 125°C

Storage Temperature Range .................. –65°C to 125°C

Maximum Junction Temperature (Note 3)............. 150°C

Lead Temperature Soldering (10s) ........................ 300°C

pin conFiguraTion

LTC6752

TOP VIEW

Q1

V

EE

2

+IN 3

4 –IN

5 V

CC

Q1

V

EE

2

+IN 3

LTC6752-1

TOP VIEW

6 V

CC

5

LE/HYST

4 –IN

LTC6752-2

TOP VIEW

V

CC

+IN

–IN

SHDN

1

2

3

4

8

7

6

5

V

DD

Q

V

EE

LE/HYST

S5 PACKAGE

5-LEAD PLASTIC TSOT-23

T

JMAX

= 150°C,

JA

= 215°C/W (NOTE 3)

LTC6752-3

SC6 PACKAGE

6-LEAD PLASTIC SC70

WITH LATCHING/ADJUSTABLE HYSTERESIS

T

JMAX

= 150°C,

θ

JA

= 270°C/W (NOTE 3)

LTC6752-4

MS8 PACKAGE

8-LEAD PLASTIC MSOP

T

JMAX

= 150°C,

θ

JA

= 163°C/W (NOTE 3)

TOP VIEW

NC

Q

12 11 10

V

DD

1

V

CC

2

V

EE

3

4

+IN

9

8

7

6

–IN

V

EE

LE/HYST

SHDN

Q

TOP VIEW

Q1

V

EE

2

+IN 3

6 V

CC

5 V

DD

4 –IN

13

V

EE

5

NC

UD PACKAGE

12-LEAD (3mm

×

3mm) PLASTIC QFN

T

JMAX

= 150°C,

θ

JA

= 68°C/W (NOTE 3)

EXPOSED PAD (PIN 13) IS V

EE

, MUST BE SOLDERED TO PCB

SC6 PACKAGE

6-LEAD PLASTIC SC70

WITH SEPARATE INPUT/OUTPUT SUPPLIES

T

JMAX

= 150°C,

θ

JA

= 270°C/W (NOTE 3)

Table 1. Features and Part Numbers

PART#

LTC6752

LTC6752-1

LTC6752-2

LTC6752-3

LTC6752-4

l

LATCHING/ADJUSTABLE

HYSTERESIS

SEPARATE INPUT/

OUTPUT SUPPLIES

SHUTDOWN

COMPLEMENTARY

OUTPUTS

PACKAGE OFFERING

TSOT-23-5

SC70-6

MS8

3mm × 3mm QFN

SC70-6

2

6752fb

For more information

www.linear.com/LTC6752

LTC6752/LTC6752-1/

LTC6752-2/LTC6752-3/LTC6752-4

orDer inForMaTion

Lead Free Finish

TAPE AND REEL (MINI)

LTC6752IS5#TRMPBF

LTC6752HS5#TRMPBF

LTC6752ISC6-1#TRMPBF

LTC6752HSC6-1#TRMPBF

LTC6752ISC6-4#TRMPBF

LTC6752HSC6-4#TRMPBF

TAPE AND REEL

LTC6752IS5#TRPBF

LTC6752HS5#TRPBF

LTC6752ISC6-1#TRPBF

LTC6752HSC6-1#TRPBF

LTC6752ISC6-4#TRPBF

LTC6752HSC6-4#TRPBF

PART MARKING* PACKAGE DESCRIPTION

LTGKT

LGQK

LGQM

5-Lead Plastic TSOT-23

6-Lead Plastic SC-70

SPECIFIED TEMPERATURE RANGE

–40°C to 85°C

–40°C to 125°C

–40°C to 85°C

–40°C to 125°C

–40°C to 85°C

–40°C to 125°C

TRM = 500 pieces. *Temperature grades are identified by a label on the shipping container.

LEAD FREE FINISH

LTC6752IMS8-2#PBF

LTC6752HMS8-2#PBF

LTC6752IUD-3#PBF

LTC6752HUD-3#PBF

TAPE AND REEL

LTC6752IMS8-2#TRPBF

LTC6752HMS8-2#TRPBF

LTC6752IUD-3#TRPBF

LTC6752HUD-3#TRPBF

PART MARKING* PACKAGE DESCRIPTION

LTGKW

LGKV

8-Lead Plastic MSOP

12-Lead Plastic QFN (3mm

×

3mm)

12-Lead Plastic QFN (3mm

×

3mm)

SPECIFIED TEMPERATURE RANGE

–40°C to 85°C

–40°C to 125°C

–40°C to 85°C

–40°C to 125°C

Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.

Consult LTC Marketing for information on nonstandard lead based finish parts.

For more information on lead free part marking, go to:

http://www.linear.com/leadfree/

For more information on tape and reel specifications, go to:

http://www.linear.com/tapeandreel/

(V

CC

= 2.5V, V

DD

= 2.5V, V

EE

= 0). The

l

denotes the specifications which

apply over the specified temperature range, otherwise specifications are at T

A

= 25°C.

LE/HYST, SHDN

pins floating, C

L

= 5pF,

V

OVERDRIVE

= 50mV, –IN = V

CM

= 300mV, +IN = –IN + V

OVERDRIVE

, 150mV step size unless otherwise noted.

SYMBOL

V

CC

- V

EE

V

DD

- V

EE

V

CMR

V

OS

TCV

OS

V

HYST

C

IN

R

DM

R

CM

I

B

PARAMETER

Supply Voltage (Note 5)

Output Stage Supply Voltage (Note 5)

Input Voltage Range (Note 7)

Input Offset Voltage (Note 6)

l

elecTrical characTerisTics

CONDITIONS

l

LTC6752/LTC6752-1 (Total Supply)

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

l

MIN

2.45

1.71

–5.5

–8.5

TYP

MAX

3.5

5.25

3.5

V

CC

+ 0.1

UNITS

V

mV

µV/°C

mV

pF

kΩ

MΩ

µA

LTC6752-2/LTC6752-3/LTC6752-4

l

V

EE

– 0.2

±1.2

18

5

1.1

57

6.4

5.5

8.5

Input Offset Voltage Drift

Input Hysteresis Voltage (Note 6)

Input Capacitance

Differential Mode Resistance

Common Mode Resistance

Input Bias Current

V

CM

= V

EE

+ 0.3V

LE/HYST

Pin Floating

l

–3.8

–4

–1.35

0.3

1.25

2.1

0.75

V

CM

= V

CC

– 0.3V

l

µA

dB

6752fb

I

OS

CMRR_

LVCM

CMRR_FR

Input Offset Current

Common Mode Input Range, Low V

CM

Region

V

CM

= V

EE

– 0.2V to V

CC

– 1.5V

l

–0.75

51

46

50

45.5

±0.1

69

65

Common Mode Rejection Ratio (Measured at V

CM

= V

EE

– 0.2V to V

CC

+ 0.1V

Extreme Ends of V

CMR

)

For more information

www.linear.com/LTC6752

3

LTC6752/LTC6752-1/

LTC6752-2/LTC6752-3/LTC6752-4

(V

CC

= 2.5V, V

DD

= 2.5V, V

EE

= 0). The

l

denotes the specifications which

apply over the specified temperature range, otherwise specifications are at T

A

= 25°C.

LE/HYST, SHDN

pins floating, C

L

= 5pF,

V

OVERDRIVE

= 50mV, –IN = V

CM

= 300mV, +IN = –IN + V

OVERDRIVE

, 150mV step size unless otherwise noted.

SYMBOL

PSRR_V

CC

PARAMETER

Input Power Supply Rejection Ratio

Total Power Supply Rejection Ratio

PSRR_V

DD

A

VOL

V

OH

Output Power Supply Rejection Ratio

Open Loop Gain

Output High Voltage (Amount Below

V

DD

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

V

CC

(LTC6752/LTC6752-1))

Output Low Voltage (Referred to V

EE

)

Output Short-Circuit Current

CONDITIONS

V

CM

= 0.3V, V

DD

= 2.5V, V

CC

Varied from 2.45V

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

V

CM

= 0.3V, V

CC

Varied from 2.45V to 3.5V

(LTC6752/LTC6752-1)

V

CM

= 0.3V, V

DD

Varied from 1.71V to 3.5V

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

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

Removed (Note 12)

I

SOURCE

= 8mA

l

elecTrical characTerisTics

MIN

59

57

53

51

56

51

TYP

74

73

71

6000

130

MAX

UNITS

dB

V/V

260

340

400

mV

mA

V

OL

I

SC

I

SINK

= 8mA

l

200

16

12

15

9

30

22

4.5

l

Source

l

Sink

l

I

VCC

V

CC

Supply Current, Device On

LTC6752/LTC6752-1

LTC6752-2/LTC6752-3/LTC6752-4

l

5.0

5.9

2.25

2.5

3.2

3.4

4.75

5.2

5.0

5.9

6.65

7.7

5

5.5

mA

ns

ps

ns

ps

MHz

1.9

2.6

l

I

VDD

V

DD

Supply Current, Device On

LTC6752-2/LTC6752-4

LTC6752-3

l

4.3

4.5

l

I

TOTAL

Total Supply Current, Device On

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

LTC6752-3

l

6.2

1.2

2.9

l

t

R

, t

F

t

PD

t

SKEW

t

ODD

t

CMD

TR

Rise/Fall time

Propagation Delay (Note 8)

Propagation Delay Skew, Rising to Falling

Transition (Note 9)

Overdrive Dispersion (Note 8)

Common Mode Dispersion

Toggle Rate (Note 11)

10% to 90%

V

OVERDRIVE

= 50mV

300

Overdrive Varied from 10mV to 125mV

V

CM

Varied from V

EE

– 0.2V to V

CC

+ 0.1V

100mV

P-P

Input, LTC6752/LTC6752-1/

LTC6752-2/LTC6752-4

100mV

P-P

Input, LTC6752-3

V

IN

= 100mV

P-P

,

f

IN

= 100MHz, Jitter BW = 10Hz – 50MHz

f

IN

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

f

IN

= 10MHz, Jitter BW = 10Hz – 5MHz

1.8

240

280

250

t

JITTER

RMS Jitter

4.5

6.0

30

ps

4

6752fb

For more information

www.linear.com/LTC6752

LTC6752/LTC6752-1/

LTC6752-2/LTC6752-3/LTC6752-4

(V

CC

= 2.5V, V

DD

= 2.5V, V

EE

= 0). The

l

denotes the specifications which

apply over the specified temperature range, otherwise specifications are at T

A

= 25°C.

LE/HYST, SHDN

pins floating, C

L

= 5pF,

V

OVERDRIVE

= 50mV, –IN = V

CM

= 300mV, +IN = –IN + V

OVERDRIVE

, 150mV step size unless otherwise noted.

SYMBOL

V

LE/HYST

R

HYST

V

HYST_LARGE

V

IL_LE

V

IH_LE

I

IH_LE

I

IL_LE

t

SETUP

t

HOLD

t

PL

I

SD_VCC

I

SD_VDD

PARAMETER

LE/HYST

Pin Voltage

Resistance Looking Into

LE/HYST

Hysteresis Voltage

Latch Pin Voltage, Latch Guaranteed

Latch Pin Voltage, Hysteresis Disabled

Latch Pin Current High

Latch Pin Current Low

Latch Setup Time (Note 10)

Latch Hold Time (Note 10)

Latch to Output Delay

Shutdown Mode Input Stage Supply Current V

SHDN

= 0.6V

l

elecTrical characTerisTics

CONDITIONS

Open Circuit

LE/HYST

Pin Voltage < Open Circuit Value

V

LE/HYST

= 800mV

l

MIN

1.05

15

TYP

1.25

20

40

MAX

1.45

25

0.3

UNITS

V

kΩ

mV

V

µA

ns

Latching/Adjustable Hysteresis Characteristics (LTC6752-1/LTC6752-2/LTC6752-3 Only)

Output Not Latched

V

LE/HYST

= 1.7V

V

LE/HYST

= 0.3V

l

1.7

30

–70

–47

–2

2

7

400

185

585

620

340

380

650

680

72

Shutdown Characteristics (LTC6752-2/LTC6752-3 Only)

µA

ns

V

0.6

100

V

ns

Shutdown Mode Output Stage Supply

Current

V

SHDN

= 0.6V, LTC6752-2

l

V

SHDN

= 0.6V, LTC6752-3

l

250

80

l

t

SD

V

IH_SD

V

IL_SD

t

WAKEUP

Shutdown Time

Shutdown Pin Voltage High

Shutdown Pin Voltage Low

Wake-Up Time from Shutdown

Output Hi-Z

Part Guaranteed to Be Powered On

Part Guaranteed to Be Powered Off

V

OD

= 100mV, Output Valid

1.3

(V

CC

= 3.3V, V

DD

= 3.3V, V

EE

= 0). The

l

denotes the specifications which apply over the specified temperature range, otherwise

specifications are at T

A

= 25°C.

LE/HYST, SHDN

pins floating, C

L

= 5pF, V

OVERDRIVE

= 50mV, –IN = V

CM

= 300mV, +IN = –IN +

V

OVERDRIVE

, 150mV step size unless otherwise noted.

SYMBOL

V

CC

- V

EE

V

DD

- V

EE

V

CMR

V

OS

TCV

OS

V

HYST

C

IN

R

DM

R

CM

I

B

PARAMETER

Supply Voltage (Note 5)

Output Supply Voltage (Note 5)

Input Voltage Range (Note 7)

Input Offset Voltage (Note 6)

l

CONDITIONS

l

LTC6752/LTC6752-1 (Total Supply)

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

l

MIN

2.45

1.71

–5.5

–9

TYP

MAX

3.5

5.25

3.5

V

CC

+ 0.1

UNITS

V

mV

µV/°C

mV

pF

kΩ

MΩ

µA

LTC6752-2/LTC6752-3/LTC6752-4

l

V

EE

– 0.2

±1.2

18

4.7

1.1

57

6.4

5.5

9

Input Offset Voltage Drift

Input Hysteresis Voltage (Note 6)

Input Capacitance

Differential Mode Resistance

Common Mode Resistance

Input Bias Current

V

CM

= V

EE

+ 0.3V

LE/HYST

Pin Floating

l

–3.8

–4.1

–1.4

0.33

1.5

2.3

0.75

V

CM

= V

CC

– 0.3V

l

µA

6752fb

I

OS

Input Offset Current

l

–0.75

±0.1

For more information

www.linear.com/LTC6752

5

LTC6752-2_15

LTC6752-2_15 Overview

Preview

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