Datasheet > LT1721_15

LT1721_15

更新时间： 2024-10-04 01:22:47

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
28页	273K
描述
Dual/Quad, 4.5ns, Single Supply 3V/5V Comparators with Rail-to-Rail Outputs

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LT1721_15 数据手册

LT1720/LT1721

Dual/Quad, 4.5ns, Single

Supply 3V/5V Comparators

with Rail-to-Rail Outputs

DESCRIPTION

The LT^®1720/LT1721 are UltraFast^TMdual/quad compara-

tors optimized for single supply operation, with a supply

voltagerangeof2.7Vto6V.Theinputvoltagerangeextends

from 100mV below ground to 1.2V below the supply volt-

age. Internal hysteresis makes the LT1720/LT1721 easy to

use even with slow moving input signals. The rail-to-rail

outputs directly interface to TTL and CMOS. Alternatively,

the symmetric output drive can be harnessed for analog

applications or for easy translation to other single supply

logic levels.

FEATURES

UltraFast: 4.5ns at 20mV Overdrive

7ns at 5mV Overdrive

Low Power: 4mA per Comparator

Optimized for 3V and 5V Operation

Pinout Optimized for High Speed Ease of Use

Input Voltage Range Extends 100mV

Below Negative Rail

TTL/CMOS Compatible Rail-to-Rail Outputs

Internal Hysteresis with Speciﬁed Limits

Low Dynamic Current Drain; 15μA/(V-MHz),

Dominated by Load In Most Circuits

The LT1720 is available in three 8-pin packages; three pins

per comparator plus power and ground. In addition to SO

and MSOP packages, a 3mm × 3mm low proﬁle (0.8mm)

dualﬁnepitchleadlesspackage(DFN)isavailableforspace

limited applications. The LT1721 is available in the 16-pin

SSOP and S packages.

Tiny 3mm × 3mm × 0.75mm DFN Package (LT1720)

APPLICATIONS

High Speed Differential Line Receiver

Crystal Oscillator Circuits

Window Comparators

Threshold Detectors/Discriminators

Pulse Stretchers

Zero-Crossing Detectors

High Speed Sampling Circuits

The pinouts of the LT1720/LT1721 minimize parasitic

effects by placing the most sensitive inputs (inverting)

away from the outputs, shielded by the power rails. The

LT1720/LT1721 are ideal for systems where small size and

low power are paramount.

L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. UltaFast is

a trademark of Linear Technology Corporation. All other trademarks are the property of their

respective owners.

TYPICAL APPLICATION

Propagation Delay vs Overdrive

2.7V to 6V Crystal Oscillator with TTL/CMOS Output

2.7V TO 6V

25°C

= 100mV

= 10pF

STEP

LOAD

1MHz TO 10MHz

= 5V

CRYSTAL (AT-CUT)

RISING EDGE

220Ω

)

PDLH

620Ω

GROUND

CASE

FALLING EDGE

)

PDHL

OUTPUT

1/2 LT1720

–

1.8k

17201 TA01

OVERDRIVE (mV)

0.1μF

17201 TA02

17201fc

12 3 4 5 6 7...28

中文翻译

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与LT1721_15相关器件

型号	品牌	获取价格	描述	数据表
LT1721CGN	Linear	获取价格	Dual/Quad, 4.5ns, Single Supply 3V/5V Comparators with Rail-to-Rail Outputs
LT1721CGN#PBF	Linear	获取价格	LT1721 - Quad, 4.5ns, Single Supply 3V/5V Comparators with Rail-to-Rail Outputs; Package:
LT1721CGN#TR	Linear	获取价格	LT1721 - Quad, 4.5ns, Single Supply 3V/5V Comparators with Rail-to-Rail Outputs; Package:
LT1721CGN#TRPBF	Linear	获取价格	LT1721 - Quad, 4.5ns, Single Supply 3V/5V Comparators with Rail-to-Rail Outputs; Package:
LT1721CS	Linear	获取价格	Dual/Quad, 4.5ns, Single Supply 3V/5V Comparators with Rail-to-Rail Outputs
LT1721CS#TRPBF	Linear	获取价格	LT1721 - Quad, 4.5ns, Single Supply 3V/5V Comparators with Rail-to-Rail Outputs; Package:
LT1721IGN	Linear	获取价格	Dual/Quad, 4.5ns, Single Supply 3V/5V Comparators with Rail-to-Rail Outputs
LT1721IGN#PBF	Linear	获取价格	LT1721 - Quad, 4.5ns, Single Supply 3V/5V Comparators with Rail-to-Rail Outputs; Package:
LT1721IGN#TR	Linear	获取价格	LT1721 - Quad, 4.5ns, Single Supply 3V/5V Comparators with Rail-to-Rail Outputs; Package:
LT1721IS	Linear	获取价格	Dual/Quad, 4.5ns, Single Supply 3V/5V Comparators with Rail-to-Rail Outputs

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