tfa9887
Latest
Modded Nexus 7 shows why some phone and tablet loudspeakers are better than others (video)
We never used to take the speakers in phones or tablets very seriously. Frankly, we're not sure manufacturers did either. But the old assumption that tiny = tinny is starting to seem a bit unfair. Last year, Dutch chip-maker NXP released a new type of mobile audio component -- the TFA9887 -- that allowed a mobile device to monitor its speaker system in real-time in order to max out volume without risking damage to the driver. Although NXP is way too modest to confirm it, we happen to know that this chip made its way into a number of HTC devices, including the new One, One X+ and 8X, where it's been described as "feedback" speaker technology. The extra voltage delivered to speakers by this generation of component hasn't been especially wild -- just a couple of volts above the industry norm of around 3V. But what you're about to hear after the break is the next-gen TFA9890, which is expected to appear in devices around the middle of this year, and which racks things all the way up to 9.5V. This promises to be a much more audible leap relative to traditional no-feedback speaker systems, and you should be able to spot the difference for yourself after the break.
NXP's new audio chip pumps up the volume for mobile device speakers (update: video)
Dutch company NXP -- best known for it's NFC solutions -- introduced a new audio chip today that's set to significantly improve the sound quality of the micro-speakers commonly built into mobile devices such as smartphones and tablets. The TFA9887 integrated circuit combines NXP's CoolFlux audio DSP, a class-D amplifier with current sensing and a DC-to-DC converter to boost the output level of micro-speakers up to five times (up to 2.6W RMS) without damaging the driver. Class-D amplifiers are highly efficient and, when combined with a DC-to-DC converter, provide a strong and clear signal regardless of battery level. With current sensing, the chip uses feedback from the driver to optimize power delivery, allowing micro speakers to provide louder, richer sound with deeper, tighter bass over the entire lifetime of a mobile device. Are you ready to turn it up to 11? Check out the full PR after the break. Update: Hit the break for a couple videos from NXP.
