Datasheet > LTC1540

LTC1540

更新时间： 2023-12-20 18:44:04

品牌	Logo	应用领域
亚德诺 - ADI		比较器
页数	文件大小	规格书
14页	203K
描述
具有基准的毫微功率比较器

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LTC1540 数据手册

LTC1540

Nanopower Comparator

with Reference

FEATURES

DESCRIPTION

The LTC^®1540 is an ultralow power, single compara-

tor with built-in reference. The comparator’s features

includelessthan0.6µAsupplycurrentoverthecommercial

temperature range, a 1.182V 2% reference, program-

mable hysteresis and TTL/CMOS outputs that sink and

source current. The reference output can drive a bypass

capacitor of up to 0.01µF without oscillation.

Ultralow Quiescent Current: 0.3µA Typ

Reference Output Drives 0.01µF Capacitor

Adjustable Hysteresis

Available in 3mm × 3mm × 0.8mm DFN Package

Wide Supply Range: 2V to 11V

Input Voltage Range Includes the Negative Supply

Reference Output Sources Up to 1mA

TTL/CMOS Compatible Outputs

The comparator operates from a single 2V to 11V supply

or a dual 1V to 5.5V supply. Comparator hysteresis is

easily programmed by using two resistors and the HYST

pin. Each comparator’s input operates from the negative

supply to within 1.3V of the positive supply. The compara-

tor output stage can continuously source up to 40mA. By

eliminating the cross-conducting current that normally

occur when the comparator changes logic states, power

supply glitches are eliminated.

60µs Propagation Delay with 10mV Overdrive

No Crowbar Current

40mA Continuous Source Current

Pin Compatible with LTC1440, MAX921, MAX931

APPLICATIONS

Battery-Powered System Monitoring

Threshold Detectors

Window Comparators

Oscillator Circuits

The LTC1540 is available in the 8-pin MSOP and SO

packages. For space limited applications, the LTC1540

is available in a 3mm × 3mm low profile (0.8mm) dual

fine-pitch leadless package (DFN).

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and C-Load

is a trademark of Analog Devices, Inc. All other trademarks are the property of their respective

owners.

TYPICAL APPLICATION

Nanopower 2.9V V_CCThreshold Detector

3.3V

LTC1540 Supply Current vs Temperature

0.50

4.32M

= 5V

–

= GND = 0V

0.45

0.40

0.35

0.30

0.25

0.20

0.15

LTC1540

–

OUT

HYST

REF

–

–40 –20

TEMPERATURE (°C)

100

GND

1540 • TA02

1540

• TA01

1540fb

For more information www.linear.com/LTC1540

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