ADS8674 Datasheet, PDF (4/79 Pages) Texas Instruments – 4- and 8-Channel, Single-Supply, SAR ADCs

ADS8674, ADS8678
SBAS627 – JULY 2015
NO.
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
PIN
NAME
ADS8674
ADS8678
NC
AIN_6P
NC
AIN_6GND
NC
AIN_7P
NC
AIN_7GND
AIN_0P
AIN_0GND
AIN_1P
AIN_1GND
AIN2_GND
AIN_2P
AIN_3GND
AIN_3P
NC
AIN_4GND
NC
AIN_4P
NC
AIN_5GND
NC
AIN_5P
AGND
AGND
AVDD
AGND
AGND
DGND
DVDD
ALARM
SDO
SCLK
CS
Pin Functions (continued)
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I/O
DESCRIPTION
Analog input
Analog input
Analog input
Analog input
Analog input
Analog input
Analog input
Analog input
Analog input
Analog input
Analog input
Analog input
Analog input
Analog input
Analog input
Analog input
Power supply
Power supply
Power supply
Power supply
Power supply
Power supply
Power supply
Digital output
Digital output
Digital input
Digital input
Analog input channel 6, positive input. Decouple with AIN_6GND on pin 13.
No connection for the ADS8674; this pin can be left floating or connected to AGND.
Analog input channel 6, negative input. Decouple with AIN_6P on pin 12.
No connection for the ADS8674; this pin can be left floating or connected to AGND.
Analog input channel 7, positive input. Decouple with AIN_7GND on pin 15.
No connection for the ADS8674; this pin can be left floating or connected to AGND.
Analog input channel 7, negative input. Decouple with AIN_7P on pin 14.
No connection for the ADS8674; this pin can be left floating or connected to AGND.
Analog input channel 0, positive input. Decouple with AIN_0GND on pin 17.
Analog input channel 0, negative input. Decouple with AIN_0P on pin 16.
Analog input channel 1, positive input. Decouple with AIN_1GND on pin 19.
Analog input channel 1, negative input. Decouple with AIN_1P on pin 18.
Analog input channel 2, negative input. Decouple with AIN_2P on pin 21.
Analog input channel 2, positive input. Decouple with AIN_2GND on pin 20.
Analog input channel 3, negative input. Decouple with AIN_3P on pin 23.
Analog input channel 3, positive input. Decouple with AIN_3GND on pin 22.
Analog input channel 4, negative input. Decouple with AIN_4P on pin 25.
No connection for the ADS8674; this pin can be left floating or connected to AGND.
Analog input channel 4, positive input. Decouple with AIN_4GND on pin 24.
No connection for the ADS8674; this pin can be left floating or connected to AGND.
Analog input channel 5, negative input. Decouple with AIN_5P on pin 27.
No connection for the ADS8674; this pin can be left floating or connected to AGND.
Analog input channel 5, positive input. Decouple with AIN_5GND on pin 26.
No connection for the ADS8674; this pin can be left floating or connected to AGND.
Analog ground pin
Analog ground pin
Analog supply pin. Decouple with AGND on pin 31.
Analog ground pin. Decouple with AVDD on pin 30.
Analog ground pin
Digital ground pin. Decouple with DVDD on pin 34.
Digital supply pin. Decouple with DGND on pin 33.
Active high alarm output
Data output for serial communication
Clock input for serial communication
Active low logic input; chip-select signal
4
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