EVAL-AD7689EDZ Datasheet, PDF (18/32 Pages) Analog Devices – 16-Bit, 4-Channel/8-Channel, 250 kSPS PulSAR ADC

AD7682/AD7689
TYPICAL CONNECTION DIAGRAMS
5V 1.8V TO VDD
10µF²
100nF
100nF
100nF
V+
0V TO V_REF
ADA4841-x ³
V–
V+
0V TO V_REF
ADA4841-x ³
V–
0V OR
V_REF/2
REF
REFIN VDD
IN0
AD7689
IN[7:1]
VIO
DIN
SCK
SDO
CNV
COM
GND
MOSI
SCK
MISO
SS
NOTES
1. INTERNAL REFERENCE SHOWN. SEE VOLTAGE REFERENCE OUTPUT/INPUT SECTION FOR
REFERENCE SELECTION.
2. C_REF IS USUALLY A 10µF CERAMIC CAPACITOR (X5R).
3. SEE THE DRIVER AMPLIFIER CHOICE SECTION FOR ADDITIONAL RECOMMENDED AMPLIFIERS.
4. SEE THE DIGITAL INTERFACE SECTION FOR CONFIGURING AND READING CONVERSION DATA.
Figure 26. Typical Application Diagram with Multiple Supplies
+5V
1.8V TO VDD
V_REF p-p
V_REF/2
10µF²
100nF
100nF
V+
ADA4841-x ³
V–
REF
IN0
REFIN VDD
AD7689
V+
ADA4841-x ³
V–
IN[7:1]
100nF
VIO
DIN
SCK
SDO
CNV
COM
GND
MOSI
SCK
MISO
SS
NOTES
1. INTERNAL REFERENCE SHOWN. SEE VOLTAGE REFERENCE OUTPUT/INPUT SECTION FOR
REFERENCE SELECTION.
2. C_REF IS USUALLY A 10µF CERAMIC CAPACITOR (X5R).
3. SEE THE DRIVER AMPLIFIER CHOICE SECTION FOR ADDITIONAL RECOMMENDED AMPLIFIERS.
4. SEE THE DIGITAL INTERFACE SECTION FOR CONFIGURING AND READING CONVERSION DATA.
Figure 27. Typical Application Diagram Using Bipolar Input
Data Sheet
Rev. D | Page 18 of 32