參數(shù)資料
型號: TPS65950ZXNT
廠商: TEXAS INSTRUMENTS INC
元件分類: 消費(fèi)家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PBGA209
封裝: 7 X 7 MM, 0.40 MM PITCH, PLASTIC, BGA-209
文件頁數(shù): 141/167頁
文件大小: 2566K
代理商: TPS65950ZXNT
HSO
EXTMUTE
V
0
VMID
t
VMID_EN
HSR/L_GAIN(1:0)
RAMP_EN
0
MUTE
HSO
RAMP_DELAY
Application
mode
t
RAMP_DELAY
032-024
dV/dt
TPS65950
Integrated Power Management/Audio Codec
www.ti.com
SWCS032 – OCTOBER 2008
The antipop system using an internal current generator controlling the ramp of charge or discharge is
implemented for the headset output. The pop-noise effect can be dramatically reduced by an external FET
controlled by a 1.8-V output signal (MUTE pin).
Figure 6-11 is a diagram of headset pop noise. Table 6-7 lists the characteristics of headset pop noise.
Figure 6-11. Headset Pop-Noise Cancellation Diagram
Table 6-7. Headset Pop-Noise Characteristics
Parameter
Test Conditions
Min(1)
Typ(2)
Max(3)
Unit
dv/dt
Ramp of charge or discharge
170
V/s
Pop-noise (A-weighted)
Ac-coupling capacitor = 47
F
1
mV
Serial resistor = 33
External FET: Rdson = 0.12
(1)
Min = Minimum value
(2)
Typ = Typical value
(3)
Max = Maximum value
Audio/Voice Module
75
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