參數(shù)資料
型號(hào): TPA2051D3YFFR
廠商: TEXAS INSTRUMENTS INC
元件分類: 音頻/視頻放大
英文描述: 2.9 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA25
封裝: 2.16 X 2.11 MM, 0.40 MM PITCH, GREEN, WCSP-25
文件頁(yè)數(shù): 17/34頁(yè)
文件大小: 1594K
代理商: TPA2051D3YFFR
SLOS641A – JUNE 2009 – REVISED OCTOBER 2009 ..................................................................................................................................................... www.ti.com
The headphone amplifier limiter settings depend on the setting of the HP_gain bits. Table 5 shows limiter values
for different headphone amplifier gains.
Table 5. Typical Headphone Output Limiter Levels
HEADPHONE LIMITER
HEADPHONE OUTPUT
REGISTER BYTE:
PEAK VOLTAGE
LIMHP [2:0]
(HP_GAIN = 0dB)
(HP_GAIN = -6dB)
(HP_GAIN = -12dB)
000
0.65 V
0.325 V
0.163 V
001
0.75 V
0.375 V
0.188 V
010
0.83 V
0.415 V
0.208 V
011
0.90 V
0.45 V
0.225 V
100
0.97 V
0.485 V
0.244 V
101
1.05 V
0.525 V
0.263 V
110
1.2 V
0.60 V
0.300 V
111
1.3 V
0.65 V
0.325 V
The attack and release time can be selected via I2C interface. Table 6 gives the possible selections for the
attack time.
Table 6. Attack Time Selection
ATTACK TIME
REGISTER BYTE:
(MS/STEP)
REGISTER BYTE:
(MS/STEP)
ATK_TIME[4:0]
00000
1.28
10000
21.76
00001
2.56
10001
23.04
00010
3.84
10010
24.32
00011
5.12
10011
25.6
00100
6.4
10100
26.88
00101
7.68
10101
28.16
00110
8.96
10110
29.44
00111
10.24
10111
30.72
01000
11.52
11000
32
01001
12.8
11001
33.28
01010
14.08
11010
34.56
01011
15.36
11011
35.84
01100
16.64
11100
37.12
01101
17.92
11101
38.4
01110
19.2
11110
39.68
01111
20.48
11111
40.96
24
Copyright 2009, Texas Instruments Incorporated
Product Folder Link(s): TPA2051D3
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