Because of the Thanksgiving holiday in the U.S., TI E2E™ design support forum responses may be delayed from November 25 through December 2. Thank you for your patience.
Part Number: PCM1795 Other Parts Discussed in Thread: TINA-TI , NE5534 Hi,
Could you please provide the output impedance(res and cap) to me for PCM1795 to simulate the phase margin with TINA-TI for the operational amplifier which is used as I/V converter…
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…
Hi Andy,
thank you for your detailed reply! I fully agree with everything you say. Yes, popcorn noise is really annyoing in an audio circuit. That's why we had to place a huge percentage of all screened NE5534 directly into the dustbin. By the way, our…
Hi Shh,
you mean a circuit like figure 32 of datasheet of PCM1798 but with the OPA1632 instead of U3=NE5534? Would also some low pass filtering be needed?
Kai
Part Number: TPS7A49 Other Parts Discussed in Thread: LM317 , LM337 , NE5534 , TLE2141 hi, my name is doni. i have trouble designing tracking regulator for LM317 and LM337. i found an article about TPS7A4901 and TPS7A3001 as a tracking regulator. my question…
Other Parts Discussed in Thread: PCM4220 , OPA1632 , NE5534 , OPA227 , PCM4222 I have designed an ADC Circuit with the PCM4220 buffered by the OPA1632 but strangely enough, when I supply a Vcom at the OPA1632 this voltage also appears at the + and - input…
Hi Omeraygor,
The missing bypass caps could be the reason the op amps are acting this way. With the op amps biased to VCOM, and the input at 0V then this would be pushing a full scale output by the op amps which could heat them up.
What is the temperature…
Here is some new information:
After finding that installing the input caps caused the chip to trip the DC offset fault, I decided to try BTL mode. As suggested in the datasheet I tied the LINP and LINN to GND and then applied power to the chip. Much…
Other Parts Discussed in Thread: UA741 , NE5534 , LM118-N , LM101A-N Hello. I have an obsolete Nat. Semi. part UA702HMQB on a board designed decades ago. Today, I'm looking to replace this part for its function in a through-hole DIP or Can package. Can…