Datasheet

HSO
EXTMUTE
V
0
VMID
t
VMID_EN
HSR/L_GAIN(1:0)
RAMP_EN
0
0
MUTE
HSO
RAMP_DELAY
Application
mode
t
t
RAMP_DELAY
032-024
dV/dt
TPS65950
SWCS032E–OCTOBER 2008–REVISED JANUARY 2011 www.ti.com
Figure 6-11. Headset Pop-Noise Cancellation Diagram
Table 6-7. Headset Pop-Noise Characteristics
Parameter Test Conditions Min Typ Max Unit
dv/dt Ramp of charge or discharge 170 V/s
Pop-noise (A-weighted) ac-coupling capacitor = 47 μF 1 mV
Serial resistor = 33 Ω
External FET: Rdson = 0.12 Ω
6.1.5 Predriver for External Class-D Amplifier
Two predriver amplifiers provide a stereo signal on the PreD.LEFT and PreD.RIGHT terminals to drive an
external class-D amplifier. These terminals are available if a stereo, single-ended, ac-coupled headset is
used.
6.1.5.1 Predriver Output Characteristics
Table 6-8 lists the output characteristics of the predriver.
76 Audio/Voice Module Copyright © 2008–2011, Texas Instruments Incorporated
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