MAX4018EEE+

更新时间： 2024-01-14 01:19:03

品牌	Logo	应用领域
美信 - MAXIM		运算放大器
页数	文件大小	规格书
16页	199K
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MAX4018EEE+ 数据手册

Lo w -Co s t , Hig h -S p e e d , S OT2 3 , S in g le -S u p p ly

Op Am p s w it h Ra il-t o -Ra il Ou t p u t s

618/MAX420

Maxim recommends using microstrip and stripline tech-

niques to obtain full bandwidth. To ensure that the PC

board does not degrade the amplifier’s performance,

design it for a frequency greater than 1GHz. Pay care-

ful attention to inputs and outputs to avoid large para-

sitic capacitance. Whether or not you use a constant-

impedance board, observe the following guidelines

when designing the board:

The outp ut s wing s to within 60mV of e ithe r p owe r-

supply rail with a 2kΩ load. The input ground-sensing

and the rail-to-rail output substantially increase the

dynamic range. With a symmetric input in a single +5V

application, the input can swing 2.95Vp-p, and the out-

put can swing 4.9Vp-p with minimal distortion.

En a b le In p u t a n d Dis a b le d Ou t p u t

The enable feature (EN_) allows the amplifier to be

placed in a low-power, high-output-impedance state.

• Don’t use wire-wrap boards because they are too

inductive.

Typically, the EN_ logic low input current (I ) is small.

• Don’t use IC sockets because they increase parasitic

capacitance and inductance.

However, as the EN voltage (V ) approaches the nega-

tive supply rail, I increases (Figure 2). A single resis-

tor connected as shown in Figure 3 prevents the rise in

the logic-low input current. This resistor provides a

• Use surface-mount instead of through-hole compo-

nents for better high-frequency performance.

feedback mechanism that increases V as the logic

• Use a PC board with at least two layers; it should be

as free from voids as possible.

input is brought to V . Figure 4 shows the resulting

input current (I ).

• Keep signal lines as short and as straight as possi-

ble. Do not make 90° turns; round all corners.

When the MAX4018 is disabled, the amplifier’s output

impedance is 35kΩ. This high resistance and the low

2p F outp ut c a p a c ita nc e ma ke this p a rt id e a l in

RF/video multiplexer or switch applications. For larger

arrays, pay careful attention to capacitive loading. See

the Output Capacitive Loading and Stability section for

more information.

Ra il-t o -Ra il Ou t p u t s ,

Gro u n d -S e n s in g In p u t

The inp ut c ommon-mod e ra ng e e xte nd s from

(V - 200mV) to (V - 2.25V) with excellent common-

mode rejection. Beyond this range, the amplifier output

is a nonlinear function of the input, but does not under-

go phase reversal or latchup.

Table 1. Recommended Component Values

GAIN (V/V)

COMPONENT

∞

-1

500

—

-2

500

250

500

124

—

-5

500

100

+10

500

-10

500

+25

500

-25

1200

(Ω)

—

∞

(Ω)

49.9

200

49.9

105

49.9

100

49.9

TIN

49.9

Small-Signal -3dB Bandwidth (MHz)

Note: = R + R ; R and R

are calculated for 50Ω applications. For 75Ω systems, R

= 75Ω; calculate R from the

TIN

following equation:

Ω

TIN

______________________________________________________________________________________ 11

1...8 9 101112 13 14...16

中文翻译

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MAX4018EEE+ 替代型号

型号	品牌	替代类型	描述	数据表
MAX4018EEE-T	MAXIM	类似代替	暂无描述
MAX4018EEE	MAXIM	完全替代	Low-Cost, High-Speed, SOT23, Single-Supply Op Amps with Rail-to-Rail Outputs

与MAX4018EEE+相关器件

型号	品牌	描述	获取价格	数据表
MAX4018EEE-T	MAXIM	暂无描述	获取价格
MAX4018ESD	MAXIM	Low-Cost, High-Speed, SOT23, Single-Supply Op Amps with Rail-to-Rail Outputs	获取价格
MAX4018ESD-T	MAXIM	Video Amplifier, 1 Channel(s), 3 Func, PDSO14, 0.150 INCH, MS-012AB, SO-14	获取价格
MAX4019	MAXIM	Low-Cost, High-Speed, Single-Supply, Gain of +2 Buffers with Rail-to-Rail Outputs in SOT23	获取价格
MAX4019	ADI	低成本、高速、单电源、增益为+2的缓冲器，满摆幅输出，SOT23封装	获取价格
MAX4019EEE	MAXIM	Low-Cost, High-Speed, Single-Supply, Gain of +2 Buffers with Rail-to-Rail Outputs in SOT23	获取价格

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