ZHCSL30B June 2009 – March 2020 PGA280
PRODUCTION DATA.
The output stage power is connected to the low-voltage supply (normally 3 V or 5 V) that is used by the subsequent signal path of the system. This design prevents overloading of the low-voltage signal path.
The output signal is fully differential around a common-mode voltage (VOCM). The VOCM input pin is typically connected to midsupply voltage to offer the widest signal amplitude range. VOCM is a high-impedance input that requires an external connection to a voltage within the supply boundaries. The usable voltage range for the VOCM input is specified in the and must be observed.
The output stage can be set to a gain of 1 V/V and 1⅜ V/V. THe output stage is set to 1 V/V after a device reset or power-on, and is controlled by the gain multiplication factor.
Both signal outputs, VOP and VON, swing symmetrically around VOCM. The signal is represented as the voltage between the two outputs and does not require an accurate VOCM. Therefore, the signal output does not include ground noise or grounding errors. Noise or drift on VOCM is normally rejected by the common-mode rejection capability of the subsequent signal stage.
The signal that passes through the output stage is internally monitored for two error conditions: clipping of the signal to the supply rail and overcurrent. In fault conditions, an error flag bit is set (OUTerr).