參數(shù)資料
型號(hào): LM4810LD
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 音頻/視頻放大
英文描述: Dual 105mW Headphone Amplifier with Active-High Shutdown Mode
中文描述: 0.105 W, 2 CHANNEL, AUDIO AMPLIFIER, DSO8
封裝: LLP-8
文件頁數(shù): 5/18頁
文件大?。?/td> 928K
代理商: LM4810LD
External Components Description
(
Figure 1
)
Components
Functional Description
1. R
i
The inverting input resistance, along with R
f
, set the closed-loop gain. R
i
, along with C
i
, form a high
pass filter with f
c
= 1/(2
π
R
i
C
i
).
The input coupling capacitor blocks DC voltage at the amplifier’s input terminals. C
i
, along with R
i
,
create a highpass filter with f
c
= 1/(2
π
R
i
C
i
). Refer to the section,
Selecting Proper External
Components
, for an explanation of determining the value of C
i
.
The feedback resistance, along with R
i
, set closed-loop gain.
This is the supply bypass capacitor. It provides power supply filtering. Refer to the
Application
Information
section for proper placement and selection of the supply bypass capacitor.
This is the BYPASS pin capacitor. It provides half-supply filtering. Refer to the section,
Selecting
Proper External Components
, for information concerning proper placement and selection of C
B
.
This is the output coupling capacitor. It blocks the DC voltage at the amplifier’s output and forms a high
pass filter with R
L
at f
O
= 1/(2
π
R
L
C
O
)
2. C
i
3. R
f
4. C
S
5. C
B
6. C
O
Typical Performance Characteristics
THD+N vs Frequency
THD+N vs Frequency
20008985
20008964
THD+N vs Frequency
THD+N vs Frequency
20008965
20008966
L
www.national.com
5
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