LM4871MX 参数 Datasheet PDF下载

LM4871

External Components Description

Components

1.

2.

R

i

C

i

(Figure

1)

Functional Description

Inverting input resistance which sets the closed-loop gain in conjunction with R

f

. This resistor also forms a

high pass filter with C

i

at f

C

= 1/(2π R

i

C

i

).

Input coupling capacitor which blocks the DC voltage at the amplifiers input terminals. Also creates a

highpass filter with R

i

at f

c

= 1/(2π R

i

C

i

). Refer to the section,

Proper Selection of External Components,

for an explanation of how to determine the value of C

i

.

Feedback resistance which sets the closed-loop gain in conjunction with R

i

.

Supply bypass capacitor which provides power supply filtering. Refer to the

Power Supply Bypassing

section for information concerning proper placement and selection of the supply bypass capacitor.

Bypass pin capacitor which provides half-supply filtering. Refer to the section,

Proper Selection of External

Components,

for information concerning proper placement and selection of C

B

.

3.

4.

5.

R

f

C

S

C

B

Typical Performance Characteristics

THD+N vs Frequency

THD+N vs Frequency

THD+N vs Frequency

DS100008-3

DS100008-4

DS100008-5

THD+N vs Output Power

THD+N vs Output Power

THD+N vs Output Power

DS100008-6

DS100008-7

DS100008-8

Output Power vs

Supply Voltage

Output Power vs

Supply Voltage

Output Power vs

Supply Voltage

DS100008-9

DS100008-10

DS100008-11

3

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