Prescalar – Postscalar Open-loop and Closed-loop Settings TI Information – Selective Disclosure

WHY PRES-SCALAR – POST-SCALAR What is it? Pre-scalar has digital headroom of +24dB without clipping Post-scalar can be adjusted to the desire distortion for increased power over the full scale input. What is it for? By increasing the input signal over the full scale (clipped signal) in the pre-scalar block and then adjusting the output the desired distortion in the post-scalar block: The distortion level is independent of PVCC The distortion level is also maintained in post-scalar block, i.e. in a certain range the post-scalar block can be adjusted so that the output amplitude changes but the distortion level stays constant TI Information – Selective Disclosure

TI Information – Selective Disclosure Closed-loop TAS5710 Prescalar: 0x57 00AB AAAA Postscalar: 0x56 0002 3333 Input: 13 VDC, full scale digital Load: 8 Ohm Output: 8W, 10% THD+N 1kHz – 8W – 10% THD+N 15kHz – 8W – 10% THD+N TI Information – Selective Disclosure

TI Information – Selective Disclosure Open-loop TAS5709 Prescalar: 0x57 002B 0000 Postscalar: 0x56 0006 B000 Input: 13 VDC, full scale digital Load: 8 Ohm Output: 8W, 10% THD+N 1kHz – 8W – 10% THD+N 15kHz – 8W – 10% THD+N TI Information – Selective Disclosure

TI Information – Selective Disclosure