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參數資料
| 型號： | TPA6021A4NE4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PDIP20 |
| 封裝： | ROHS COMPLIANT, PLASTIC, MS001-AD, DIP-20 |
| 文件頁數： | 7/25頁 |
| 文件大小： | 1823K |
| 代理商： | TPA6021A4NE4 |
www.ti.com
VOLUME OPERATION
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10
20
30
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
Volume [Pin 18] - V
V
olume
-
dB
BTL Volume
TPA6021A4
SLOS465 – JUNE 2005
The VOLUME pin controls the BTL volume when driving speakers, and the SE volume when driving
headphones. This pin is controlled with a dc voltage, which should not exceed VDD.
The output volume increases in discrete steps as the dc voltage increases and decreases in discrete steps as
the dc voltage decreases. There are a total of 32 discrete gain steps of the amplifier and range from -85 dB to 20
dB for BTL operation and -85 dB to 14 dB for SE operation.
A pictorial representation of the typical volume control can be found in Figure 24.
Figure 24. Typical DC Volume Control Operation
15
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