Part Number:CC2640
I am developing a product using CC2640 and TI AFE circuit. This product is a battery operated product with external battery and is charged through USB.
Since, we can use CC2640 (4x4) in external regulator (1.7-1.95) mode, which eliminates the need of external capacitors and also simplifies the PCB routing.
The other thing is, the external AFE and ADC circuits runs on 3.3V, and have SPI interface. My question is, Does we require a level translator between ADC (ADS1120) and CC2640, which are running under different voltages, even though they are from the same battery?