TPA6120A2: Chip consultion

Hello Gust,

The TPA6120A2 should be able to meet all of these requirements. Are there any other metrics customer is concerned about (power saving, cost, etc.)?

Best,

Hasan Babiker

Hi Hasan,

Thank you for your reply. My customer is focused on balance output and input. His application is headphone, but he mentioned that our TPA6120A2 can't balance the output. Do you have some application notes to explain it? I have researched the Internet that somebody used two TPA6120A2 to do balanced headphones. Does this way make the two channels of TPA6120A2 one channel? So is this method feasible in my client's application?

BR

Gust

Hello Gust,

Customer can use amplifier as shown on the simplified schematic in the datasheet:

Best,

Hasan Babiker

Hi Hasan,

I have one question to confirm with you. My customer see one application in balance headphone using TPA6120 and the application uses two TPA6120 realize the balance output. The blow picture is the application block diagram. Can you check whether use two TPA6120 can realize the balance output? How to use TPA6120 realize the balance output? Thank you!

BR

Gust

Hello Gust,

Can you clarify? Are you looking rather for a fully-differential device such as the OPA1637?

Best,

Hasan Babiker

Hi Hasan,

I just need a headphone amplifier. My customer finds TPA6120 and he thinks TPA6120 can't balance output. He saw an application in the Internet that using two TPA6120s to make a balance headphone. He thinks whether using TPA6120's two channels as one balance channel, which needs you confirm. The above picture is the application block diagram. The link as follow but it is Chinese version.

http://www.bi-xenon.cn/item/45280461973.html

BR

Gust

Hello Gust,

The schematic shown earlier shows the TPA6120 being used in this way, unless there is something I'm missing?

Best,

Hasan Babiker

Hi Hasan,

Thank you for your reply. So using two TPA6120 to make a balanced channel can achieve output balance, right? The customer believes that one TPA6120 cannot achieve output balance, so it is necessary to confirm whether the application of two TPA6120 can meet the output balance?

BR

Gust

Hello Gust,

Yes I believe customer should be able to do this with two TPA6120 devices. Although this device doesn't have a spice model, the THS6012 is a similar device that has a spice model that the customer can use to test out their circuit in TINA.

Best,

Hasan Babiker