LMH6645

更新时间： 2024-09-23 22:47:03

品牌	Logo	应用领域
美国国家半导体 - NSC		放大器
页数	文件大小	规格书
19页	638K
描述
2.7V, 650レA, 55MHz, Rail-to-Rail Input and Output Amplifiers with Shutdown Option

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LMH6645 技术参数

生命周期：	Obsolete	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.83

LMH6645 数据手册

February 2002

LMH6645/46/47

2.7V, 650µA, 55MHz, Rail-to-Rail Input and Output

Amplifiers with Shutdown Option

General Description

Features

The LMH6645 (single) and LMH6646 (dual), rail-to-rail input

and output voltage feedback amplifiers, offer high speed

(55MHz), and low voltage operation (2.7V) in addition to

micro-power shutdown capability (LMH6647, single).

(V_S= 2.7V, T_A= 25˚C, R_L= 1kΩ to V⁺/2, A_V= +1. Typical

values unless specified).

n −3dB BW

n Supply voltage range

n Slew rate

n Supply current

n Output short circuit current

n Linear output current

n Input common mode voltage

n Output voltage swing

n Input voltage noise

n Input current noise

55MHz

2.5V to 12V

22V/µs

Input common mode voltage range exceeds either supply by

0.3V, enhancing ease of use in multitude of applications

where previously only inferior devices could be used. Output

voltage range extends to within 20mV of either supply rails,

allowing wide dynamic range especially in low voltage appli-

cations. Even with low supply current of 650µA/amplifier,

650µA/channel

42mA

20mA

0.3V beyond rails

20mV from rails

17nV/

output current capability is kept at a respectable 20mA for

driving heavier loads. Important device parameters such as

BW, Slew Rate and output current are kept relatively inde-

pendent of the operating supply voltage by a combination of

process enhancements and design architecture.

0.75pA/

Applications

n Active filters

n High speed portable devices

n Multiplexing applications (LMH6647)

n Current sense buffer

In portable applications, the LMH6647 provides shutdown

capability while keeping the turn-off current to less than

50µA. Both turn-on and turn-off characteristics are well be-

haved with minimal output fluctuations during transitions.

This allows the part to be used in power saving mode, as

well as multiplexing applications. Miniature packages

(SOT23, MSOP-8, and SO-8) are further means to ease the

adoption of these low power high speed devices in applica-

tions where board area is at a premium.

n High speed transducer amp

Connection Diagrams

SOT23-5 (LMH6645)

SOT23-6 (LMH6647)

SOIC-8 (LMH6645)

20020260

20020259

20020261

Top View

DS200202

www.national.com

12 3 4 5 6 7...19

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与LMH6645相关器件

型号	品牌	获取价格	描述	数据表
LMH6645MA	NSC	获取价格	2.7V, 650レA, 55MHz, Rail-to-Rail Input and Ou
LMH6645MA/NOPB	NSC	获取价格	IC OP-AMP, 4000 uV OFFSET-MAX, PDSO8, SOIC-8, Operational Amplifier
LMH6645MA/NOPB	TI	获取价格	单通道 2.7V 650µA 55MHz 轨到轨输入和输出放大器 \| D \| 8 \| -4
LMH6645MAX	NSC	获取价格	2.7V, 650レA, 55MHz, Rail-to-Rail Input and Ou
LMH6645MAX/NOPB	NSC	获取价格	IC OP-AMP, 4000 uV OFFSET-MAX, PDSO8, SOIC-8, Operational Amplifier
LMH6645MAX/NOPB	TI	获取价格	单通道 2.7V 650µA 55MHz 轨到轨输入和输出放大器 \| D \| 8 \| -4
LMH6645MF	NSC	获取价格	2.7V, 650レA, 55MHz, Rail-to-Rail Input and Ou
LMH6645MF/NOPB	TI	获取价格	单通道 2.7V 650µA 55MHz 轨到轨输入和输出放大器 \| DBV \| 5 \|
LMH6645MFX	ROCHESTER	获取价格	OP-AMP, 4000uV OFFSET-MAX, PDSO5, SOT-23, 5 PIN
LMH6645MFX	NSC	获取价格	2.7V, 650レA, 55MHz, Rail-to-Rail Input and Ou

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