ZHCSHK8B October 2017 – October 2018 TAS2770
The TAS2770 provides speaker voltage and current sense for real time monitoring of loudspeaker behavior. The VSNS_P and VSNS_N pins should be connected after any ferrite bead filter (or directly to the OUT_P and OUT_N connections if no EMI filter is used). The V-Sense connections eliminate IR drop error due to packaging, PCB interconnect or ferrite bead filter resistance. It should be noted that any interconnect resistance after the V-Sense terminals will not be corrected for, so it is advised to connect the sense connections as close to the load as possible.
I-Sense and V-Sense can be powered down by asserting the ISNS_PD and VSNS_PD register bits respectively. When powered down, the device will return null samples for the powered down block.
| ||I-Sense is active (default)|
| ||I-Sense is powered down|
| ||V-Sense is active (default)|
| ||V-Sense is powered down|