參數(shù)資料
型號(hào): TPA2008D2PWPRG4
廠商: Texas Instruments
文件頁(yè)數(shù): 23/26頁(yè)
文件大?。?/td> 0K
描述: IC AMP AUDIO PWR 3W STER 24TSSOP
標(biāo)準(zhǔn)包裝: 2,000
類型: D 類
輸出類型: 2 通道(立體聲)
在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量: 3W x 2 @ 3 歐姆
電源電壓: 4.5 V ~ 5.5 V
特點(diǎn): 消除爆音,差分輸入,短路和熱保護(hù),關(guān)機(jī),音量控制
安裝類型: 表面貼裝
供應(yīng)商設(shè)備封裝: 24-HTSSOP
封裝/外殼: 24-TSSOP(0.173",4.40mm)裸露焊盤(pán)
包裝: 帶卷 (TR)
配用: 296-18922-ND - EVAL MODULE FOR TPA2008D2
www.ti.com
TPA2008D2
SLOS413C – JULY 2003 – REVISED MAY 2004
Table 1. TYPICAL DC VOLUME CONTROL
VOLTAGE ON VOLUME PIN
TYPICAL GAIN OF AMPLIFIER
(V)
(dB) (1)
(INCREASING OR FIXED GAIN)
(DECREASING GAIN)
0-0.33
0.31-0
-38(2)
0.34-0.42
0.43-0.32
-37
0.43-0.52
0.54-0.44
-35
0.53-0.63
0.64-0.55
-33
0.64-0.75
0.75-0.65
-31
0.76-0.86
0.86-0.76
-29
0.87-0.97
0.97-0.87
-27
0.98-1.07
1.08-0.98
-25
1.08-1.18
1.19-1.09
-23
1.19-1.30
1.32-1.20
-21
1.31-1.41
1.42-1.33
-19
1.42-1.52
1.53-1.43
-17
1.53-1.63
1.63-1.54
-15
1.64-1.75
1.75-1.64
-13
1.76-1.85
1.84-1.76
-12
1.86-1.96
1.96-1.85
-10
1.97-2.07
2.09-1.97
-8
2.08-2.18
2.19-2.10
-6
2.19-2.30
2.33-2.20
-4
2.31-2.40
2.43-2.34
-2
2.41-2.52
2.49-2.44
0(2)
2.53-2.63
2.62-2.50
2
2.64-2.75
2.75-2.63
4
2.76-2.87
2.85-2.76
6
2.88-2.98
2.99-2.86
8
2.99-3.10
3.12-3.00
10
3.11-3.22
3.25-3.13
12
3.23-3.33
3.36-3.26
14
3.34-3.47
3.48-3.37
16
3.48-3.69
3.64-3.49
18
3.70-VDD
VDD-3.65
20(2)
(1)
The typical part-to-part gain variation can be as large as
±2 dB (one gain step).
(2)
Tested in production.
The volume control circuitry of the TPA2008D2 is internally referenced to the VDD and AGND terminals. Any
common-mode noise between the VOLUME terminal and these terminals will be sensed by the volume control
circuitry. If the noise exceeds the step size voltage, the gain will change. In order to minimize this effect, care
must be taken to ensure the signal driving the VOLUME terminal is referenced to the VDD and AGND terminals
of the TPA2008D2. See section titled, “Special Layout Considerations” for more details.
6
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