LONDON Ė NXP Semiconductors NV has announced the availability of a stereo Class-D audio amplifier that can provide 136 watts into two by 8 ohms for use in automobiles where high power output is required.
NXP (Eindhoven, The Netherlands) said the TDF8599C works from a supply voltage of between 8 volts and 48 volts and drives two 8-ohm to 6-ohm bridge-tied load (BTL) channels or one 4-ohm/3-ohm BTL channel.
The TDF8599C is supplied in an SOT851-2 package known as an HSOP36. This is a plastic small outline package with heatsink, low stand-off height and 36 leads dual in line.
The audio amplifier uses differential inputs and includes an output stage based on silicon-on-insulator (SOI) BCDMOS manufacturing process. The gain is selectable up to 32-dB and the part is qualified in accordance with AEC-Q100.
The TDF8599C can operate in either non-I2C-bus mode or I2C-bus mode. When in I2C-bus mode, DC load detection results and fault conditions can be read back from the device. Up to 15 I≤C-bus addresses can be selected depending on the value of the external resistors connected to pins ADS and MOD.
There are tweeter and clip detect functions and independent short-circuit protection for each channel. There is also a thermal protection warning, NXP states.
NXP did not provide pricing information. The chip is available but the datasheet is not, according to NXP's website.
I find it really bizarre that the chip is available but the datasheet is not! How is anyone supposed to use it or consider it for a design without the datasheet? I really like the power and wonder what the sound specifications are going to be.
Today's standard amps are 50x4, I wonder is 136x2 stereo is actually 136x4? If so, thats a teremendous boost, and quite close to my Sony home theatre at 135x4. Guessing sub-woofer would need a seperate driver, maybe with this kind of power, subs wont be needed. Challenge would be to get door integrated speakers able to translate this much power into distortion-less sound, and without rattling the door hinges ;-)
@electrnx_lyf: How is this audio amp article related to integration and reliability could you please explain?