AD9020 Datasheet, PDF (9/12 Pages) Analog Devices – 10-Bit 60 MSPS A/D Converter

ANALOG INPUT
AD9020
+V_SENSE
+5V
1/2 AD708
150Ω
0.1µF
+1.75V
+V_REF 12 ^*
+V_SENSE 11
R/2
R1
10kΩ
R
R_S
+0.875V
R/2
R_S 1/2 AD708
3/4_REF 7
R2
10kΩ
0.1µF
R/2
R
+1.75V
356Ω
+2.5V
150Ω
AD580
R_S
0V
R_S 1/2 AD708
R3
10kΩ
R
R/2
1/2_{REF 1}
0.1 µF
R/2
R
R
R4
10kΩ
–0.875V
R/2
1/2 AD708
1/4_{REF 63}
0.1 µF
R/2
R
R
20kΩ
20kΩ
R
–1.75V
1/2 AD708
150Ω
–5V
–V_SENSE 57
0.1µF
–V_REF 56
R/2
*
* _{= WIRING}
RESISTANCE = < 5Ω
AD9020
AD9020 Reference Circuit
3/4_REF
1/2_REF
1/4_REF
–V_SENSE
AD9020 Equivalent Analog Input
+V_S
DIGITAL BITS
AND OVERFLOW
AD9020 Equivalent Digital Outputs
+5.0V
13k
ENCODE 14
AD9020 Equivalent Encode Circuit
REV. A
–9–