參數(shù)資料
型號: TPA6130A2RTJRG4
廠商: TEXAS INSTRUMENTS INC
元件分類: 音頻控制
英文描述: 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PQCC20
封裝: 4 X 4 MM, GREEN, PLASTIC, QFN-20
文件頁數(shù): 13/28頁
文件大?。?/td> 1198K
代理商: TPA6130A2RTJRG4
www.ti.com
Default Mode
VOLUME CONTROL
SLOS488B – NOVEMBER 2006 – REVISED FEBRUARY 2008
The TPA6130A2 starts up with the following conditions:
SWS = Off, CHARGE PUMP = On
HP ENABLES = Off
HiZ = Off
MODE = Stereo
HP MUTES = On, VOLUME = -59.5 dB,
The TPA6130A2 volume control is set through the I2C interface. The six volume control register bits are decoded
to 64 volume settings that employ an audio taper. See Table 2 for the gain table. The values listed in this table
are typical. Each gain step has a different input impedance. See Figure 33.
Table 2. Audio Taper Gain Values
Gain Control Word
Nominal Gain (dB)
Nominal Gain (V/V)
Gain Control Word
Nominal Gain
Nominal Gain (V/V)
(Binary) Mute [7:6],
(dB)
V[5:0]
11XXXXXX
–100
0.00001
00100000
–10.9
0.283
00000000
–59.5
0.001
00100001
–10.3
0.305
00000001
–53.5
0.002
00100010
–9.7
0.329
00000010
–50.0
0.003
00100011
–9.0
0.353
00000011
–47.5
0.004
00100100
–8.5
0.379
00000100
–45.5
0.005
00100101
–7.8
0.405
00000101
–43.9
0.007
00100110
–7.2
0.433
00000110
–41.4
0.009
00100111
–6.7
0.462
00000111
–39.5
0.012
00101000
–6.1
0.493
00001000
–36.5
0.015
00101001
–5.6
0.524
00001001
–35.3
0.018
00101010
–5.1
0.557
00001010
–33.3
0.022
00101011
–4.5
0.591
00001011
–31.7
0.026
00101100
–4.1
0.627
00001100
–30.4
0.031
00101101
–3.5
0.664
00001101
–28.6
0.037
00101110
–3.1
0.702
00001110
–27.1
0.043
00101111
–2.6
0.742
00001111
–26.3
0.050
00110000
–2.1
0.783
00010000
–24.7
0.057
00110001
–1.7
0.825
00010001
–23.7
0.065
00110010
–1.2
0.870
00010010
–22.5
0.074
00110011
–0.8
0.915
00010011
–21.7
0.084
00110100
–0.3
0.962
00010100
–20.5
0.093
00110101
0.1
1.010
00010101
–19.6
0.104
00110110
0.5
1.061
00010110
–18.8
0.116
00110111
0.9
1.112
00010111
–17.8
0.129
00111000
1.4
1.165
00011000
–17.0
0.142
00111001
1.7
1.220
00011001
–16.2
0.156
00111010
2.1
1.277
00011010
–15.2
0.172
00111011
2.5
1.335
00011011
–14.5
0.188
00111100
2.9
1.395
00011100
–13.7
0.205
00111101
3.3
1.456
00011101
–13.0
0.223
00111110
3.6
1.520
00011110
–12.3
0.242
00111111
4.0
1.585
00011111
–11.6
0.262
20
Copyright 2006–2008, Texas Instruments Incorporated
Product Folder Link(s): TPA6130A2
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