參數(shù)資料
型號(hào)： 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)： 134/167頁
文件大?。?/td> 2566K
代理商： TPS65950ZXNT
6.1.2.2 External Components and Application Schematic
8 W
Ferritecheapbead
VBAT.RIGHT/LEFT
IHF.RIGHT/LEFT.M
GND.RIGHT/LEFT
C
/C
HFR
HFL
IHF.RIGHT/LEFT.P
VBAT
Onboard
Chip
032-018
L
/L
HFR.P
HFL.P
L
/L
HFR.M
HFL.M
C
/C
HFR.P
HFL.P
C
/C
HFR.M
HFL.M
6.1.3
Headset
6.1.3.1 Headset Output Characteristics
DigitalPGA
Gain=0dB
AnalogPGA
Gain=0dB
Amp
0dB
DAC
1.5Vpp
0dBFs
032-019
TPS65950
Integrated Power Management/Audio Codec
www.ti.com
SWCS032 – OCTOBER 2008
Figure 6-5 is a simplified schematic of the 8-
stereo hands-free.
Figure 6-5. 8-
Stereo Hands-Free
NOTE
For the component values, see Table 15-1.
For ferrite bead, choose one with high impedance at high frequencies, but with very low impedance at low
frequencies. For example, MPZ1608S221A (recommended), N2012ZPS121, Murata BLM15AG102SN1,
or MDP BKP1608HS271.
The analog signal from the audio and/or voice interface is fed to two single-ended headset amplifiers.
There are two configurations:
Stereo single-ended mode: Left and right headset amplifiers with different gains (–6, 0, 6 dB) provide
the stereo signal on the HSOL and HSOR terminals. A pseudo-ground is provided on the VMID
terminal to eliminate external capacitors.
Stereo single-ended mode ac-coupled: Left and right headset amplifiers with different gains (–6, 0, 6
dB) provide the stereo signal on the HSOL and HSOR terminals. The external capacitor is required to
eliminate the dc component of the signal.
Figure 6-6 shows the headset amplifier. Table 6-3 lists the output characteristics of the headset amplifier.
Figure 6-6. Headset Amplifier
Audio/Voice Module
69
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