Hi Team,
Working on the TS5A3159A. We did an isolated test on TS5A3159A since it is used in many designs and it keeps coming back with the following issues:
- Select input is digital 5v tolerant: it can go above VCC up to 5v, but going below VCC will cause excess current (from VCC). Excess current starts showing up beyond 0.2~0.3v divergence from GND/VCC.
- NO/NC channels can have any analog voltage below VCC. After going 0.2~0.3v above VCC, internal clamping diodes will start draining NO/NC voltages into VCC.
Our application has a 2.8V drive on the control line and ~4.2V supply voltage and would need the DSBGA package.
The attached spreadsheet shows the measured current draws in the common earth return for 3 analogue switches. You can clearly see that as the Vin voltage starts to deviate from the power supply voltage that the current draw by the device deviates hugely from what the datasheet says it should be.
Regards,
RJ