Datasheet > MIC841_1104

MIC841_1104

更新时间： 2024-11-09 07:16:59

品牌	Logo	应用领域
麦瑞 - MICREL		/
页数	文件大小	规格书
8页	300K
描述
Comparator with 1.25% Reference and Adjustable Hysteresis

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数据手册

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MIC841_1104 数据手册

MIC841/842

Comparator with 1.25% Reference

and Adjustable Hysteresis

General Description

Features

The MIC841 and MIC842 are micropower, precision

voltage comparators with an on-chip voltage reference.

• 1.5V to 5.5V operating range

• 1.5μA typical supply current

Both devices are intended for voltage monitoring

applications. External resistors are used to set the voltage

monitor threshold. When the threshold is crossed,

the outputs switch polarity.

• ±1.25% voltage threshold accuracy

• 10nA max input leakage current over temperature

• 10µs propagation delay

• Externally adjustable hysteresis (MIC841)

• Internal 20mV hysteresis (MIC842)

• Output options

- Push-pull, active high

- Push-pull, active low

- Open drain, active low

The MIC842 incorporates a voltage reference and

comparator with fixed internal hysteresis; two external

resistors are used to set the switching threshold voltage.

The MIC841 provides a similar function with user

adjustable hysteresis; this part requires three external

resistors to set the upper and lower thresholds

(the difference between the threshold voltages being the

hysteresis voltage).

• Open drain output can be pulled to 6V regardless of V_DD

• Immune to brief input transients

• Teeny™ 5-pin SC-70 package

Both the MIC841 and MIC842 are available with push-pull

or open-drain output stage. The push-pull output stage is

configured either active high or active low; the open-drain

output stage is only configured active low.

Applications

Supply current is extremely low (1.5μA, typical), making it

ideal for portable applications.

• Smart phones

• PDAs

• Precision battery monitoring

• Battery chargers

The MIC841/2 is supplied in Micrel’s Teeny™ 5-pin

SC-70 package.

Data sheets and support documentation are found on the

Micrel web site: www.micrel.com.

______________________________________________________________________________________________________________________

Typical Application

Threshold Detector with

Threshold Detection with

Internal Fixed Hysteresis

Adjustable Hysteresis

Teeny™ is a trademark of Micrel, Inc.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

M9999-042711-C

April 2011

12 3 4 5 6 7 8

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