AD9020/PCB AD [Analog Devices], AD9020/PCB Datasheet - Page 11

• Manufacturer Part Number: AD9020/PCB
• Description: 10-Bit 60 MSPS A/D Converter
• Manufacturer: AD [Analog Devices]

Step
1024
1023
1022
512
511
510
02
01
00
The overflow bit is always 0 except where noted in parentheses ( ). MSB INVERT and LSBs INVERT are considered dc controls.
REV. A
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AD9020 SNR and ENOB vs. Input Frequency
AD9020 Harmonics vs. Input Frequency
62
56
50
44
38
32
26
20
30
35
40
45
50
55
60
65
70
FS = +1.75 V
0 = –1.75 V
1
1
> +1.7500
<–1.7466
Range
+1.7466
+1.7432
+0.0034
–0.0034
–1.7432
–1.7466
0.000
2
2
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4
INPUT FREQUENCY – MHz
+55 C & +125 C
INPUT FREQUENCY – MHz
4
6 8 10
6 8 10
ENCODE RATE = 40MSPS
– 55 C
+125 C
20
40
20
LSBs INV = “0”
MSB INV = “0”
(1)1111111111
60 100
1111111111
1111111110
1000000000
0111111111
0111111110
0000000010
0000000001
0000000000
+25 C
+ 25 C
40
True
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60
200
10.0
9.0
8.0
7.0
6.0
5.0
4.0
100
AD9020 Truth Table
Offset Binary
LSBs INV = “1”
(1)0000000000
MSB INV = “1”
–11–
0000000000
0000000001
0111111111
1000000000
1000000001
1111111101
1111111110
1111111111
Inverted
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Input Capacitance/Resistance vs. Input Voltage
AD9020 SNR and ENOB vs. Conversion Rate
62
56
50
44
38
32
26
20
48
47
46
45
44
–1.8
1
–1.2
2
RESISTANCE
ANALOG INPUT
CONVERSION RATE – MSPS
LSBs INV = “0”
MSB INV = “1”
(1)0111111111
–0.6
4
0111111111
0111111110
0000000000
1111111111
1111111110
1000000010
1000000001
1000000000
ANALOG INPUT = 2.3MHz
6
True
8 10
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0
Twos Complement
(A
IN
)
+
0.6
– Volts
20
CAPACITANCE
40
+
1.2
LSBs INV = “1”
MSB INV = “0”
(1)1000000000
60
AD9020
1000000000
1000000001
1111111111
0000000000
0000000001
0111111101
0111111110
0111111111
Inverted
+
100
1.8
10
70
60
50
40
30
20
10.0
9.0
8.0
7.0
6.0
5.0
4.0
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