LMH6642

更新时间： 2024-11-10 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
22页	950K
描述
3V, Low Power, 130MHz, 75mA Rail-to-Rail Output Amplifiers

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LMH6642 数据手册

May 2003

LMH6642/6643/6644

3V, Low Power, 130MHz, 75mA Rail-to-Rail Output

Amplifiers

in single (LMH6642), dual (LMH6643), and quad (LMH6644)

options. See ordering information for packages offered.

General Description

The LMH664X family true single supply voltage feedback

amplifiers offer high speed (130MHz), low distortion

(−62dBc), and exceptionally high output current (approxi-

mately 75mA) at low cost and with reduced power consump-

tion when compared against existing devices with similar

performance.

Features

(V_S

5V, T_A= 25˚C, R_L= 2kΩ, A_V= +1. Typical values

unless specified).

n −3dB BW (A_V= +1)

130MHz

3V to 12.8V

130V/µs

Input common mode voltage range extends to 0.5V below V⁻

and 1V from V⁺. Output voltage range extends to within

40mV of either supply rail, allowing wide dynamic range

especially desirable in low voltage applications. The output

stage is capable of approximately 75mA in order to drive

heavy loads. Fast output Slew Rate (130V/µs) ensures large

peak-to-peak output swings can be maintained even at

higher speeds, resulting in exceptional full power bandwidth

of 40MHz with a 3V supply. These characteristics, along with

low cost, are ideal features for a multitude of industrial and

commercial applications.

n Supply voltage range

n Slew rate (Note 8), (A_V= −1)

n Supply current (no load)

n Output short circuit current

n Linear output current

2.7mA/amp

+115mA/−145mA

75mA

n Input common mode volt. 0.5V beyond V⁻, 1V from V⁺

n Output voltage swing

n Input voltage noise (100kHz)

n Input current noise (100kHz)

40mV from rails

17nV/

0.9pA/

n THD (5MHz, R_L= 2kΩ, V_O= 2V_PP, A_V= +2)

n Settling time

−62dBc

68ns

Careful attention has been paid to ensure device stability

under all operating voltages and modes. The result is a very

well behaved frequency response characteristic (0.1dB gain

flatness up the 12MHz under 150Ω load and A_V= +2) with

minimal peaking (typically 2dB maximum) for any gain set-

ting and under both heavy and light loads. This along with

fast settling time (68ns) and low distortion allows the device

to operate well in ADC buffer, and high frequency filter

applications as well as other applications.

n Fully characterized for 3V, 5V, and 5V

n Overdrive recovery

100ns

n Output short circuit protected (Note 11)

n No output phase reversal with CMVR exceeded

Applications

n Active filters

n CD/DVD ROM

n ADC buffer amp

n Portable video

n Current sense buffer

This device family offers professional quality video perfor-

mance with low DG (0.01%) and DP (0.01˚) characteristics.

Differential Gain and Differential Phase characteristics are

also well maintained under heavy loads (150Ω) and through-

out the output voltage range. The LMH664X family is offered

Closed Loop Gain vs. Frequency for Various Gain

Large Signal Frequency Response

20018547

20018535

DS200185

www.national.com

12 3 4 5 6 7...22

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与LMH6642相关器件

型号	品牌	获取价格	描述	数据表
LMH6642EP	NSC	获取价格	Enhanced Plastic Low Power, 130MHz, 75mA Rail-to-Rail Output Amplifiers
LMH6642MA	TI	获取价格	LMH6642/LMH6643/LMH6644 Low Power, 130MHz, 75mA Rail-to-Rail Output Amplifiers
LMH6642MA	NSC	获取价格	3V, Low Power, 130MHz, 75mA Rail-to-Rail Output Amplifiers
LMH6642MA/NOPB	NSC	获取价格	IC 1 CHANNEL, VIDEO AMPLIFIER, PDSO8, SOIC-8, Audio/Video Amplifier
LMH6642MA/NOPB	TI	获取价格	LMH664x Low Power, 130 MHz, 75 mA Rail-to-Rail Output Amplifiers
LMH6642MAEP	TI	获取价格	1 CHANNEL, VIDEO AMPLIFIER, PDSO5, PLASTIC, SOT-23, 5 PIN
LMH6642MAX	NSC	获取价格	3V, Low Power, 130MHz, 75mA Rail-to-Rail Output Amplifiers
LMH6642MAX	TI	获取价格	LMH6642/LMH6643/LMH6644 Low Power, 130MHz, 75mA Rail-to-Rail Output Amplifiers
LMH6642MAX/NOPB	TI	获取价格	Single Channel, Low Power, 130MHz, 75mA Rail-to-Rail Output Amplifier 8-SOIC -40 to 85
LMH6642MAXEP	TI	获取价格	1 CHANNEL, VIDEO AMPLIFIER, PDSO5, PLASTIC, SOT-23, 5 PIN

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