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): 137/167頁
文件大小: 2566K
代理商: TPS65950ZXNT
6.1.3.2 External Components and Application Schematic
Onboard
Chip
4-wirestereojack
HSOR
HSOL
Cl
Rb
HSMIC.M
HSMIC.P
VHSMIC .OUT
Cb
Rs
Rl
Rsb
Cs
CHM.P
CHM.M
CHM.O
032-20
TPS65950
Integrated Power Management/Audio Codec
www.ti.com
SWCS032 – OCTOBER 2008
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(1)
Typ(2)
Max(3)
Unit
Rsb
Cb < 200 pF
0
Cb = 100 nF
300
Cb = 1
F
500
Rb + Rsb
2.2
2.7
k
Cs
22
47
F
The input capacitors and output resistors form a
high-pass filter (HPF) with the corner frequency =
1/(2
πR
out/Cs)
RL
CL
Rs required to ensure
16 to 32
<100 pF
0
HS amplifier stability
16 to 32
1 nF
4
16
2 nF
8
24
12
32
18
16
3 nF
12
24
20
32
24
16
4 nF
16
24
24
32
32
16
5 nF
20
24
28
(1)
Min = Minimum value
(2)
Typ = Typical value
(3)
Max = Maximum value
Audio/Voice Module
71
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