SBASAB5 March 2024 ADC3683-SP
PRODMIX
Refer to the PDF data sheet for device specific package drawings
The ADC3683-SP provides three different options for supplying the voltage reference to the ADC. An external 1.6V reference can be directly connected to the VREF input. A voltage 1.2V reference can be connected to the REFBUF input using the internal gain buffer or the internal 1.2V reference can be enabled to generate a 1.6V reference voltage. For best performance, the reference noise is filtered by connecting a 10µF and a 0.1µF ceramic bypass capacitor to the VREF pin. The internal reference circuitry of the device is shown in Figure 7-13.