AD7683 Ver la hoja de datos (PDF) - Analog Devices
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AD7683 Datasheet PDF : 17 Pages
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Data Sheet
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
AD7683
REF 1
8 VDD
+IN 2 AD7683 7 DCLOCK
–IN
3
TOP VIEW
(Not to Scale)
6
DOUT
GND 4
5 CS
Figure 6. 8-Lead MSOP Pin Configuration
Table 8. 8-Lead MSOP Pin Function Descriptions
Pin No. Mnemonic Type1 Function
1
REF
AI
Reference Input Voltage. The REF range is from 0.5 V to VDD. It is referred to the GND pin. Decouple the
REF pin closely to the GND pin with a ceramic capacitor of a few μF.
2
+IN
AI
Analog Input. It is referred to Pin –IN. The voltage range, that is, the difference between +IN and –IN, is 0 V
to VREF.
3
–IN
AI
Analog Input Ground Sense. Connect this pin to either the analog ground plane or a remote sense ground.
4
GND
P
Power Supply Ground.
5
CS
DI
Chip Select Input. On its falling edge, it initiates the conversions. The part returns to shutdown mode as
soon as the conversion is completed. It also enables DOUT. When high, DOUT is high impedance.
6
DOUT
DO Serial Data Output. The conversion result is output on this pin. It is synchronized to DCLOCK.
7
DCLOCK DI
Serial Data Clock Input.
8
VDD
P
Power Supply.
1 AI = analog input; DI = digital input; DO = digital output; and P = power.
REF 1
+IN 2
–IN 3
GND 4
AD7683
TOP VIEW
(Not to Scale)
8 VDD
7 DCLOCK
6 DOUT
5 CS
NOTES
1. EXPOSED PAD. CONNECT THE EXPOSED PAD TO GND. THIS CONNECTION
IS NOT REQUIRED TO MEET SPECIFIED ELECTRICAL PERFORMANCE.
Figure 7. 8-Lead QFN (LFCSP) Pin Configuration
Table 9. 8-Lead QFN (LFCSP) Pin Function Descriptions
Pin No. Mnemonic Type1 Function
1
REF
AI
Reference Input Voltage. The REF range is from 0.5 V to VDD. It is referred to the GND pin. Decouple the
REF pin closely to the GND pin with a ceramic capacitor of a few μF.
2
+IN
AI
Analog Input. It is referred to Pin –IN. The voltage range, that is, the difference between +IN and –IN, is 0 V
to VREF.
3
–IN
AI
Analog Input Ground Sense. Connect this pin to either the analog ground plane or a remote sense ground.
4
GND
P
Power Supply Ground.
5
CS
DI
Chip Select Input. On its falling edge, it initiates the conversions. The part returns to shutdown mode as
soon as the conversion is completed. It also enables DOUT. When high, DOUT is high impedance.
6
DOUT
DO Serial Data Output. The conversion result is output on this pin. It is synchronized to DCLOCK.
7
DCLOCK DI
Serial Data Clock Input.
8
VDD
P
Power Supply.
EPAD
Exposed Pad. Connect the exposed pad to GND. This connection is not required to meet specified
electrical performance.
1 AI = analog input; DI = digital input; DO = digital output; and P = power.
Rev. B | Page 7 of 16
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