参数资料
型号: FAB2200UCX
厂商: FAIRCHILD SEMICONDUCTOR CORP
元件分类: 音频/视频放大
英文描述: 1.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA25
封装: 0.40 MM PITCH, WLCSP-25
文件页数: 9/33页
文件大小: 948K
代理商: FAB2200UCX
2009 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAB2200 Rev. 1.0.1
17
FAB2200
Audio
Subsystem
with
St
ereo
Class-G
Headph
on
eAmplifier
Starting Gain
Starting gain is the amount of speaker gain applied when the AGC is not active. It can also be thought of as
maximum gain when the AGC is active. Starting gain is controlled by the STARTGAIN register (see Table 11).
Table 11. Speaker Gain Values
Gain Register [5:0]
Gain (dB)
Gain Register [5:0]
Gain (dB)
000000
Mute
100000
-9.5
000001
-25.0
100001
-9.0
000010
-24.5
100010
-8.5
000011
-24.0
100011
-8.0
000100
-23.5
100100
-7.5
000101
-23.0
100101
-7.0
000110
-22.5
100110
-6.5
000111
-22.0
100111
-6.0
001000
-21.5
101000
-5.5
001001
-21.0
101001
-5.0
001010
-20.5
101010
-4.5
001011
-20.0
101011
-4.0
001100
-19.5
101100
-3.5
001101
-19.0
101101
-3.0
001110
-18.5
101110
-2.5
001111
-18.0
101111
-2.0
010000
-17.5
110000
-1.5
010001
-17.0
110001
-1.0
010010
-16.5
110010
-0.5
010011
-16.0
110011
0
010100
-15.5
110100
0.5
010101
-15.0
110101
1.0
010110
-14.5
110110
1.5
010111
-14.0
110111
2.0
011000
-13.5
111000
2.5
011001
-13.0
111001
3.0
011010
-12.5
111010
3.5
011011
-12.0
111011
4.0
011100
-11.5
111100
4.5
011101
-11.0
111101
5.0
011110
-10.5
111110
5.5
011111
-10.0
111111
6.0
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