Part Number: LM4954 Hi
There are the critical issues for the LM4954. Need your help. 1. The output is using single-end. 2. The Av = 39 When the power supply is 8V, there is no sound from the VO1. When the power supply is 4V, there is the sound from the VO1…
Part Number: LM4954 Dear TI :
There is one design of speaker using LM4954.
1. Maximum sound input level : 0.125 Vrms.
2. Speaker : 8 ohm / 3W / 4.89Vrms
3. Rf = 39KOhm and Ri = 1KOhm. Will the gain be 39 for Single-End output ?
Please provide your suggestion…
Hi, sorry for the late response, this thread was left behind.
Proposed implementation looks OK, depending on the application output power requirements some other codec with both headphone and speaker drivers could be considered. If lower voltage is available…
I would like to stick with Class A-B in order not to introduce the risk of radiated or electrical noise issues caused by a switching amp. This is a redesign to replace an exiting device and hence layout effort and project risk must be minimized.
I was…
