Answered

• OPA1622: PCM512 + OPA1622 + BUF634

  

  Jahongir Dodokhonov

  Resolved

  Part Number: OPA1622 Other Parts Discussed in Thread: BUF634 , Hi TI staff, I would like to ask related question based on a thread " PCM512 + OPA1622 + BUF634" started by user.. My question refers to a schematic provided by TI staff member during…

  • Resolved

  • 2 months ago
  • Audio
  • Audio forum
Answered

• OPA1622: Enable function dead after power sequencing.

  

  Andreas Broeckling

  Resolved

  Part Number: OPA1622 Hello, the enable function does'nt work on 8 x OPA1622 after power supply sequencing. It is possible to turn the op amps correctly on if enable is high. If low, the OPA1622 pulls out a strong distorted 2Vrms signal. This happens if…

  • Resolved

  • 1 month ago
  • Audio
  • Audio forum
Answered

• OPA1622: BA3308F TI cross

  

  Kazuki Itoh

  Resolved

  Part Number: OPA1622 Other Parts Discussed in Thread: OPA1688 , OPA1656 , OPA1652 Hi team, Could you please suggest BA3308F TI cross? My customer is looking for EOL replacement device. ALC is not needed, please just recommend hero dual audio amps. https…

  • Resolved

  • 2 months ago
  • Audio
  • Audio forum

• RE: OPA1622: Single-Ended Input Circuit for OPA1622

  

  Chris Featherstone

  Jeffrey, The BUF634 is used for a couple reasons. Basically it is decoupling the precision amplifier (OPA1622) from the load (headphones). With its large slew rate the BUF634 is able to reproduce the signal seen at it's input coming from the precision…

  • 5 months ago
  • Audio
  • Audio forum

• OPA1622: As single supply transformer driver

  

  Jonah Strauss

  TI Thinks Resolved

  Part Number: OPA1622 Other Parts Discussed in Thread: INA1620 , , BUF634A , OPA210 , BUF634 , NE5534 I'm thinking of using the OPA1622 as a parallel buffer to drive a line output transformer with a 33Ω-100Ω primary impedance and a 10dBu step up. Power is 24V…

  • 6 months ago
  • Audio
  • Audio forum

• OPA1622: Simulation problems with cascaded outputstage with OPA1622

  

  Hidde de Wit

  TI Thinks Resolved

  Part Number: OPA1622 Other Parts Discussed in Thread: OPA1611 , OPA2192 Hi, I am currently working on a headphone amplifier. The goal of the headphone amplifier is to have unmeasurably low distortion levels. For this reason a cascaded outputstage with…

  • 11 months ago
  • Audio
  • Audio forum

• INA1620: & OPA1622 bias current implications

  

  Jonah Strauss

  Part Number: INA1620 Other Parts Discussed in Thread: OPA1622 , LM4562 , TINA-TI , OPA827 , OPA828 I am a little mystified as to how the high bias current of these devices interacts with resistances in the bias position and on the inverting input. Part of…

  • 7 months ago
  • Amplifiers
  • Amplifiers forum

• OPA1622: Noise in output during shutdown.

  

  William Anderson1

  TI Thinks Resolved

  Part Number: OPA1622 Looking for info, appnotes, etc. on output characteristics during shutdown . With head phone like loads (using the eval board) the output seems controlled and quiet. With higher load impedances (100k) the output during shutdown is…

  • 8 months ago
  • Audio
  • Audio forum
Answered

• OPA1622: Single supply operation

  

  Alula Hailu

  Resolved

  Part Number: OPA1622 Other Parts Discussed in Thread: , OPA1688 Could the OPA1622 be used with a single supply? I tried connecting +5V to the VCC of the OPA1622EVM and connected the VEE pin to the GND pin (and to the return of the power supply). The audio…

  • Resolved

  • 11 months ago
  • Audio
  • Audio forum

• OPA1622: Supply Voltage

  

  Frank Mancuso

  TI Thinks Resolved

  Part Number: OPA1622 I have built a high-performance audio DAC using the OPA1622. I used +/-15 volts to power the op-amps. I can't seem to find any data in the OPA1622 datasheet that discusses the performance of these op-amps with different supply voltages…

  • over 1 year ago
  • Audio
  • Audio forum

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