The ADC contains an integrated oscillator circuit for use with an external crystal. Connect the crystal and load capacitors to the XTAL1/CLKIN and XTAL2 pins; see Figure 9-50 (crystal oscillator mode). Place the crystal and crystal load capacitors close to the ADC pins using short direct traces. Connect the load capacitors to digital ground. Do not connect any other external circuit to the crystal oscillator. Table 9-21 shows approved crystals for use with the ADS1262 and ADS1263. The crystal oscillator start-up time is characterized at 10 ms (typical), and can be longer depending on the crystal characteristics.
|MANUFACTURER||FREQUENCY||LOAD CAPACITORS||OPERATING TEMPERATURE RANGE||PART NUMBER|
|Citizen||7.3728 MHz||18 pF||-40°C to +85°C||HCM497372800ABJT|
|CTS||7.3728 MHz||18 pF||-40°C to +85°C||ATS073BSM-1E|
|Abracon||7.3728 MHz||18 pF||-40°C to +125°C||ABLS-7.3728MHZ-K4T|