Datasheet

Onboard
Chip
4-wirestereojack
HSOR
HSOL
Cl
Cl
Rb
HSMIC.M
HSMIC.P
VHSMIC .OUT
Cb
Rs
Rs
Rl
Rl
Rsb
Cs
Cs
C
HM.P
C
HM.M
C
HM.O
032-20
TPS65950
SWCS032E–OCTOBER 2008–REVISED JANUARY 2011 www.ti.com
6.1.3.2 External Components and Application Schematic
Figure 6-7 is a schematic of a headset 4-wire stereo jack without an external FET. Table 6-4 lists the
output characteristics of this configuration.
Figure 6-7. Headset 4-Wire Stereo Jack Without an External FET
Table 6-4. Output Characteristics of a Headset 4-Wire Stereo Jack Without an External FET
Parameter Test Conditions Min Typ Max Unit
Rsb Cb < 200 pF 0 Ω
Cb = 100 nF 300
Cb = 1 μF 500
Rb + Rsb 2.2 2.7 kΩ
Cs 22 47 μF
The input capacitors and output resistors form a
high-pass filter (HPF) with the corner frequency =
1/(2πR
out
/Cs)
R
L
C
L
Rs required to ensure 16 to 32 Ω <100 pF 0 Ω
HS amplifier stability 16 to 32 Ω 1 nF 4
16 Ω 2 nF 8
24 Ω 12
32 Ω 18
16 Ω 3 nF 12
24 Ω 20
32 Ω 24
16 Ω 4 nF 16
24 Ω 24
32 Ω 32
16 Ω 5 nF 20
24 Ω 28
32 Ω 36
72 Audio/Voice Module Copyright © 2008–2011, Texas Instruments Incorporated
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