Datasheet

REV. E–6–
AD9221/AD9223/AD9220
(AVDD = 5 V, DVDD = 5 V, f
SAMPLE
= 1.5 MSPS, T
A
= 25C)
AD9221–Typical Performance Characteristics
1.0
0.4
–0.6
0 4095
0.8
0.6
0.0
–0.4
0.2
–0.2
–0.8
–1.0
CODE
DNL – LSBs
TPC 1. Typical DNL
FREQUENCY – MHz
SINAD – dB
80
75
40
0.1 1.0
70
65
45
60
55
50
–0.5dB
–6.0dB
–20.0dB
TPC 4. SINAD vs. Input Frequency
(Input Span = 2.0 V p-p, V
CM
= 2.5 V)
FREQUENCY – MHz
THD– dB
–50
–55
–90
0.1 1.0
–60
–65
–85
–70
–75
–80
–0.5dB
–6.0dB
–20.0dB
TPC 7. THD vs. Input Frequency
(Input Span = 5.0 V p-p, V
CM
= 2.5 V)
1.0
0.4
–1.0
0 4095
0.8
0.6
0.0
–0.8
0.2
–0.6
–0.2
–0.4
CODE
INL – LSBs
TPC 2. Typical INL
FREQUENCY – MHz
–50
–55
–90
0.1 1.0
–60
–65
–85
–70
–75
–80
–0.5dB
–6.0dB
–20.0dB
–95
–100
THD – dB
TPC 5. THD vs. Input Frequency
(Input Span = 2.0 V p-p, V
CM
= 2.5 V)
SAMPLE RATE – MSPS
–60
–65
–100
0.2 1 2
–70
–75
–95
–80
–85
–90
30.3 0.8
5V p-p
2V p-p
0.4 0.6
THD – dB
TPC 8. THD vs. Sample Rate
(A
IN
= –0.5 dB, f
IN
= 500 kHz,
V
CM
= 2.5 V)
CODE
HITS
121,764
8,180,388
85,895
N–1 N N+1
TPC 3. “Grounded-Input”
Histogram (Input Span = 2 V p-p)
FREQUENCY – MHz
SINAD – dB
80
75
40
0.1 1.0
70
65
45
60
55
50
–0.5dB
–6.0dB
–20.0dB
TPC 6. SINAD vs. Input Frequency
(Input Span = 5.0 V p-p, V
CM
= 2.5 V)
A
IN
– dBFS
100
90
30
–60 –50 –30–40
70
60
40
50
80
20
SNR/SFDR – dB
10
–20 –10 0
SFDR
SNR
TPC 9. SNR/SFDR vs. A
IN
(Input
Amplitude) (f
IN
= 500 kHz, Input
Span = 2 V p-p, V
CM
= 2.5 V)