Analog Devices AD9273, Руководство пользователя

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AD9273
Rev. B | Page 15 of 48
TYPICAL PERFORMANCE CHARACTERISTICS
f
SAMPLE
= 40 MSPS, f
IN
= 5 MHz, R
S
= 50 Ω, LNA gain = 21.3 dB, LNA bias = mid-high, PGA gain = 24 dB, AAF LPF cutoff = f
SAMPLE
/3,
HPF = LPF cutoff/20.7 (default), GAIN− = 0.8 V
–2.0
–1.5
–0.5
–1.0
0
0.5
1.0
1.5
2.0
0 0.2 0.4 0.6 0.8 1.0
GAIN+ (V)
G
A
IN
E
RRO
R
(d
B)
1.2 1.4 1.6
+85°C
+25°C
–40°C
07
03
0-
11
4
Figure 6. Gain Error vs. GAIN+ at Three Temperatures
20
18
16
14
12
10
8
6
4
2
0
–1.
0
–0.
9
–0.
8
–0.
7
–0.
6
–0.
5
–0.
4
–0.
3
–0.
2
–0.
1 0
0.
1
0.
2
0.
3
0.
4
0.
5
0.
6
0.
7
0.
8
0.
9
1.
0
P
E
RC
E
NT
AG
E
O
F
UNI
T
S
(
%
)
GAIN ERROR (dB)
07
03
0-
18
4
Figure 7. Gain Error Histogram, GAIN+ = 0.16 V
0
2
4
6
10
8
12
14
–1.
0
–0.
9
–0.
8
–0.
7
–0.
6
–0.
5
–0.
4
–0.
3
–0.
2
–0.
1 0
0.
1
0.
2
0.
3
0.
4
0.
5
0.
6
0.
7
0.
8
0.
9
1.
0
P
E
RCE
NT
A
G
E
O
F
UNI
T
S
(
%
)
GAIN ERROR (dB)
07
03
0-
18
5
Figure 8. Gain Error Histogram, GAIN+ = 0.8 V
0
2
4
6
10
8
12
14
–1.
0
–0.
9
–0.
8
–0.
7
–0.
6
–0.
5
–0.
4
–0.
3
–0.
2
–0.
1 0
0.
1
0.
2
0.
3
0.
4
0.
5
0.
6
0.
7
0.
8
0.
9
1.
0
P
E
RC
E
NT
AG
E
O
F
UNI
T
S
(
%
)
GAIN ERROR (dB)
07
03
0-
18
6
Figure 9. Gain Error Histogram, GAIN+ = 1.44 V
0
5
10
15
20
25
–1.25 –1.00 –0.75
P
E
RC
E
NT
AG
E
O
F
UNI
T
S
(
%
)
–0.50 –0.25 0
CHANNEL-TO-CHANNEL GAIN MATCHING (dB)
0.25 0.50 0.75 1.00 1.25
07
03
0-
1
80
Figure 10. Gain Match Histogram, GAIN+ = 0.3 V
5
0
10
15
20
25
–1.25 –1.00 –0.75
P
E
RC
E
NT
AG
E
O
F
UNI
T
S
(
%
)
–0.50 –0.25 0
CHANNEL-TO-CHANNEL GAIN MATCHING (dB)
0.25 0.50 0.75 1.00 1.25
07
03
0-
1
81
Figure 11. Gain Match Histogram, GAIN+ = 1.3 V