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Showing 62 results View by: Thread Post Sort by
  • TPA6138A2: The Inverting Input and Non-inverting input of TPA6138A2

    Charlie Xiao
    Charlie Xiao
    TI Thinks Resolved
    Part Number: TPA6138A2 Tool/software: Hi BU expert, I have noticed that the inverting input is as below in datasheet. But there is no non- inverting input in datasheet. May I know if the device support the non-inverting input? If so, may I know…
    • 10 months ago
    • Audio
    • Audio forum
  • Answered
  • TPA6138A2: Maximum load capacitance

    Shuji Ishiwata
    Shuji Ishiwata
    Resolved
    Part Number: TPA6138A2 Tool/software: Hi All, I have a question about the maximum load capacitance. What is the maximum load capacitance that can be connected to C19 and C20 on the EVM below? Currently, R22 and R23 are 33 Ω. Best Regards, I…
    • Resolved
    • 7 months ago
    • Audio
    • Audio forum
  • TPA6138A2: CN, CP voltage spike

    Toshiro Imi
    Toshiro Imi
    Part Number: TPA6138A2 Hello, Our customer is annoyed CN (Pin7), CP (Pin8) 300mV to 900mV voltage spike in 3.3V VDD, and he does not figure out if this phenomenon is allowable. Could you please let us know CN, CP absolute max voltage rating ? Could…
    • over 2 years ago
    • Audio
    • Audio forum
  • Answered
  • TPA6138A2: MUTE High input at NO VDD power supply

    Toshiro Imi
    Toshiro Imi
    Resolved
    Part Number: TPA6138A2 Hello, Our customer had a question about MUTE=3V input while NO VDD input. would you suggest whether any damage or reliability problem will be happened in this use case ? Does MUTE have MUTE to VDD ESD diode ? Please share…
    • Resolved
    • over 2 years ago
    • Audio
    • Audio forum
  • TPA6138A2: TPA6138A2 Damaged after 96 hours of aging

    switch
    switch
    Answer Suggested
    Part Number: TPA6138A2 Hi Ti Team, I have a headset project using TPA6138A2 ,Connect the earphones to the noise generator and age with pink noise for 96 hours, the chip is damaged. Setting up the following conditions Frequency range: 20Hz~20KHz Buzz…
    • over 4 years ago
    • Audio
    • Audio forum
  • TPA6138A2: TPA6138A2 Input characteristics

    Kazuki Kuramochi
    Kazuki Kuramochi
    TI Thinks Resolved
    Part Number: TPA6138A2 Hello Professional, My customer has questions for TPA6138A2 regarding electric characteristics. Could you provide below characteristics? ・Input Impedance ・Input bias current ・Input offset voltage(Is it same as Output offset / 2…
    • over 6 years ago
    • Audio
    • Audio forum
  • TPA6138A2: How to describe output impedance

    Hideki Hayashi1
    Hideki Hayashi1
    Part Number: TPA6138A2 Hi team, I learn it from E2E, output impedance is defined by Po plot. What is the conversion equation from output power to output impedance? Best regards, Hideki
    • over 4 years ago
    • Audio
    • Audio forum
  • TPA6138A2: Channel noise & Bluetooth noise Removal

    Dinesh Damodar
    Dinesh Damodar
    TI Thinks Resolved
    Part Number: TPA6138A2 Hello, I am using TPA6138A2 Chip to hear the sound waves to the headphone jack of 3.5mm along with I am using the CSR8645 Bluetooth module. When I am using only TPA6138A2, we can hear very good sound but when we turn on the…
    • over 4 years ago
    • Audio
    • Audio forum
  • Answered
  • TPA6138A2: Unused channel treatment

    Kelvin Tee
    Kelvin Tee
    Resolved
    Part Number: TPA6138A2 Hi Customer has following questions 1. What is the treatment of unused channel (Rch is unused)? For Pin 1, 2 and 3, is that ok to short directly to GND ? If answer is no, AC ground is not preferred due to capacitor shortage…
    • Resolved
    • over 4 years ago
    • Audio
    • Audio forum
  • Answered
  • TPA6138A2: Two peaks on THD+N

    Mochi
    Mochi
    Resolved
    Part Number: TPA6138A2 Hello, We have seen strange THD+N characteristics at Vdd=3.3V RL=33ohm SE input c onfiguration on own PCB, not EVM. There is two peaks before Voltage clipping as attached image, we also observed switching noise at positive signal…
    • Resolved
    • over 4 years ago
    • Audio
    • Audio forum
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