SBAS813 June 2018 ADS8688AT
PRODUCTION DATA.
NO. | NAME | I/O | DESCRIPTION |
---|---|---|---|
1 | SDI | Digital input | Data input for serial communication. |
2 | RST/PD | Digital input | Active low logic input.
Dual functionality to reset or power-down the device. |
3 | DAISY | Digital input | Chain the data input during serial communication in daisy-chain mode. |
4 | REFSEL | Digital input | Active low logic input to enable the internal reference.
When low, the internal reference is enabled; REFIO becomes an output that includes the VREF voltage. When high, the internal reference is disabled; REFIO becomes an input to apply the external VREF voltage. |
5 | REFIO | Analog input, output | Internal reference output and external reference input pin. Decouple with REFGND on pin 6. |
6 | REFGND | Power supply | Reference GND pin; short to the analog GND plane.
Decouple with REFIO on pin 5 and REFCAP on pin 7. |
7 | REFCAP | Analog output | ADC reference decoupling capacitor pin. Decouple with REFGND on pin 6. |
8 | AGND | Power supply | Analog ground pin. Decouple with AVDD on pin 9. |
9 | AVDD | Power supply | Analog supply pin. Decouple with AGND on pin 8. |
10 | AUX_IN | Analog input | Auxiliary input channel: positive input. Decouple with AUX_GND on pin 11. |
11 | AUX_GND | Analog input | Auxiliary input channel: negative input. Decouple with AUX_IN on pin 10. |
12 | AIN_6P | Analog input | Analog input channel 6, positive input. Decouple with AIN_6GND on pin 13. |
13 | AIN_6GND | Analog input | Analog input channel 6, negative input. Decouple with AIN_6P on pin 12. |
14 | AIN_7P | Analog input | Analog input channel 7, positive input. Decouple with AIN_7GND on pin 15. |
15 | AIN_7GND | Analog input | Analog input channel 7, negative input. Decouple with AIN_7P on pin 14. |
16 | AIN_0P | Analog input | Analog input channel 0, positive input. Decouple with AIN_0GND on pin 17. |
17 | AIN_0GND | Analog input | Analog input channel 0, negative input. Decouple with AIN_0P on pin 16. |
18 | AIN_1P | Analog input | Analog input channel 1, positive input. Decouple with AIN_1GND on pin 19. |
19 | AIN_1GND | Analog input | Analog input channel 1, negative input. Decouple with AIN_1P on pin 18. |
20 | AIN2_GND | Analog input | Analog input channel 2, negative input. Decouple with AIN_2P on pin 21. |
21 | AIN_2P | Analog input | Analog input channel 2, positive input. Decouple with AIN_2GND on pin 20. |
22 | AIN_3GND | Analog input | Analog input channel 3, negative input. Decouple with AIN_3P on pin 23. |
23 | AIN_3P | Analog input | Analog input channel 3, positive input. Decouple with AIN_3GND on pin 22. |
24 | AIN_4GND | Analog input | Analog input channel 4, negative input. Decouple with AIN_4P on pin 25. |
25 | AIN_4P | Analog input | Analog input channel 4, positive input. Decouple with AIN_4GND on pin 24. |
26 | AIN_5GND | Analog input | Analog input channel 5, negative input. Decouple with AIN_5P on pin 27. |
27 | AIN_5P | Analog input | Analog input channel 5, positive input. Decouple with AIN_5GND on pin 26. |
28 | AGND | Power supply | Analog ground pin |
29 | AGND | Power supply | Analog ground pin |
30 | AVDD | Power supply | Analog supply pin. Decouple with AGND on pin 31. |
31 | AGND | Power supply | Analog ground pin. Decouple with AVDD on pin 30. |
32 | AGND | Power supply | Analog ground pin |
33 | DGND | Power supply | Digital ground pin. Decouple with DVDD on pin 34. |
34 | DVDD | Power supply | Digital supply pin. Decouple with DGND on pin 33. |
35 | ALARM | Digital output | Active high alarm output |
36 | SDO | Digital output | Data output for serial communication |
37 | SCLK | Digital input | Clock input for serial communication |
38 | CS | Digital input | Active low logic input; chip-select signal |