LMH7322_14 datasheet(7/33 Pages) TI1

Part #	LMH7322

Description	Dual 700 ps High Speed Comparator with RSPECL Outputs

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Manufacturer	TI1 [Texas Instruments]

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1

VCCOA

LEA

VEEA

VCCIA

RHYSA

RHYSB

VCCIB

LEB

VEEB

VCCOB

LMH7322

24-pin LLP

IN+

IN-

RHYS

Q

1/2

LMH7322

Q

LMH7322

www.ti.com

SNOSAU8H – MARCH 2007 – REVISED MAY 2011

2.7V AC Electrical Characteristics (continued)

Unless otherwise specified, all limits are specified for TJ = 25°C, VCCI = VCCO = 2.7V, VEE = 0V, RL = 50Ω to VCCO-2V, VCM =

300 mV, RHYS = none. Boldface limits apply at temperature extremes.

Min

Typ

Max

Symbol

Parameter

Conditions

Units

(1)

(2)

(1)

tjitter_RMS

RMS Random Jitter

Overdrive = ±50 mV; CL = 2 pF

551

fs

Center Frequency = 140 MHz

Bandwidth = 10 Hz–20 MHz

tPDH

Propagation Delay.

Overdrive 20 mV

783

ps

(see Figure 19 application note)

Overdrive 50 mV

728

Input SR = Constant

Overdrive 100 mV

713

ps

VIN startvalue = VREF – 100 mV

Overdrive 1V

718

tOD-disp

Input Overdrive Dispersion

tPDH @ Overdrive 20 mV ↔ 100 mV

70

ps

tPDH @ Overdrive 100 mV ↔ 1V

5

tSR-disp

Input Slew Rate Dispersion

0.1 V/ns to 1 V/ns; Overdrive = 100 mV

54

ps

tCM-disp

Input Common Mode Dispersion

SR = 1 V/ns; Overdrive = 100 mV;

12

ps

0V

≤ VCM ≤ VCCI- 1.5V

ΔtPDLH

Q to Q Time Skew |tPDH – tPDL|

Overdrive = 100 mV; CL = 2 pF

35

ps

ΔtPDHL

Q to Q Time Skew |tPDL – tPDH|

Overdrive = 100 mV; CL = 2 pF

53

ps

tr

Output Rise Time (20%–80%)

Overdrive = 100 mV; CL = 2 pF

165

ps

tf

Output Fall Time (20%–80%)

Overdrive = 100 mV; CL = 2 pF

165

ps

tsLE

Latch Setup Time

102

ps

thLE

Latch Hold Time

37

ps

tPD_LE

Latch to Output Delay Time

906

ps

Connection Diagrams

Figure 2. Schematic

Figure 3. Footprint

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