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參數(shù)資料
| 型號： | FAB2200UCX |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA25 |
| 封裝： | 0.40 MM PITCH, WLCSP-25 |
| 文件頁數(shù)： | 20/33頁 |
| 文件大?。?/td> | 948K |
| 代理商： | FAB2200UCX |
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2009 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAB2200 Rev. 1.0.1
27
FAB2200
—
Audio
Subsystem
with
St
ereo
Class-G
Headph
on
eAmplifier
Address
B7
B6
B5
B4
B3
B2
B1
B0
0x05
0
HPLVOL
0
default
0
0x06
0
HPRVOL
0
default
0
HPxVOL
HPxVOL sets the gain of the headphone amplifiers according to Table 19.
HPxVOL does not include PGAINxx. Gain for the entire headphone amplifier signal path is defined by PGAINxx +
HPxVOL.
Table 19. Headphone Amplifier Gain Settings
HPxVOL [4:0]
Gain (dB)
HPxVOL [4:0]
Gain (dB)
00000
mute
10000
-9
00001
-53
10001
-8
00010
-49
10010
-7
00011
-45
10011
-6
00100
-41
10100
-5
00101
-37
10101
-4
00110
-33
10110
-3
00111
-29
10111
-2
01000
-25
11000
-1
01001
-23
11001
0
01010
-21
11010
1
01011
-19
11011
2
01100
-17
11100
3
01101
-15
11101
4
01110
-13
11110
5
01111
-11
11111
6
Address
B7
B6
B5
B4
B3
B2
B1
B0
0x07
HPNGZRA
HPNGTHRESH
HPNGZRR
HPNGTIME
default
0
HPNGZRA
1 = The headphone noise gate attack function obeys headphone zero-crossing detection and ramp settings.
0 = The headphone noise gate attack (mute) function occurs immediately rather than waiting for zero-crossing
detection or ramping.
HPNGTHRESH
HPNGTHRESH sets the threshold voltage for the headphone amplifiers’ noise gate function according to Table 1.
HPNGZRR
1 = The headphone noise gate release (un-mute) function obeys headphone zero-crossing detection and ramp
settings.
0 = The headphone noise gate release (un-mute) function occurs immediately rather than waiting for zero-crossing
detection or ramping.
HPNGTIME
HPNGTIME sets the timing for the headphone amplifiers’ noise gate function according to Table 6.
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