JAJSF44D March 2014 – March 2018 PCM1860 , PCM1861 , PCM1862 , PCM1863 , PCM1864 , PCM1865
PRODUCTION DATA.
To match the dynamic range of the secondary ADC to an incoming line level signal, an overall attenuation is applied to the incoming signal. This attenuation is also present in controlsense mode. The impact of this is that the secondary ADC in controlsense mode can only detect control signals up to 4.3 V. Exact values will vary a small amount from device to device along with the gain error.
Input impedance of the secondary ADC is designed to be 20 kΩ.