![](http://datasheet.mmic.net.cn/Analog-Devices-Inc/AD8368ACPZ-WP_datasheet_108085/AD8368ACPZ-WP_7.png)
AD8368
Rev. B | Page 7 of 20
TYPICAL PERFORMANCE CHARACTERISTICS
VS = 5 V, T = 25°C, system impedance Z0 = 50 Ω, MODE = 5 V, unless otherwise noted.
25
–20
–15
–10
–5
0
5
10
15
20
10
100
1000
S21
(d
B
)
FREQUENCY (MHz)
05
90
7-
0
03
0V
0.25V
0.5V
0.75V
1V
Figure 3. S21 vs. Frequency by VGAIN
25
–15
–10
–5
0
5
10
15
20
4
–4
–3
–2
–1
0
1
2
3
0
0.2
0.4
0.6
0.8
1.0
GA
IN
(
d
B
)
C
O
NF
O
RM
ANC
E
RRO
R
(
d
B)
VGAIN (V)
05
90
7-
0
04
70MHz
+85°C
–40°C
+25°C
Figure 4. Gain and Conformance Error vs. VGAIN (f = 70 MHz)
25
–15
–10
–5
0
5
10
15
20
4
–4
–3
–2
–1
0
1
2
3
0
0.2
0.4
0.6
0.8
1.0
GA
IN
(
d
B
)
CO
NF
O
RM
A
NCE
E
RRO
R
(
d
B)
VGAIN (V)
05
90
7-
00
5
140MHz
+85°C
–40°C
+25°C
Figure 5. Gain and Conformance Error vs. VGAIN (f = 140 MHz)
25
–15
–10
–5
0
5
10
15
20
4
–4
–3
–2
–1
0
1
2
3
0
0.2
0.4
0.6
0.8
1.0
GA
IN
(
d
B
)
C
O
NF
O
RM
ANC
E
RRO
R
(
d
B)
VGAIN (V)
05
90
7-
0
06
240MHz
+85°C
–40°C
+25°C
Figure 6. Gain and Conformance Error vs. VGAIN (f = 240 MHz)
25
–15
–10
–5
0
5
10
15
20
4
–4
–3
–2
–1
0
1
2
3
0
0.2
0.4
0.6
0.8
1.0
GA
IN
(
d
B
)
C
O
NF
O
RM
ANC
E
RRO
R
(
d
B)
VGAIN (V)
05
90
7-
0
07
380MHz
+85°C
–40°C
+25°C
Figure 7. Gain and Conformance Error vs. VGAIN (f = 380 MHz)
0.7
–0.4
–0.3
–0.2
–0.1
0
0.1
0.2
0.3
0.4
0.5
0.6
–0.5 –0.4 –0.3 –0.2 –0.1
0
0.1
0.2
0.3
0.4
0.5
AM
P
L
IT
UDE
(
V
)
TIME (s)
05
90
7-
0
08
VGAIN
VOUTP
Figure 8. Gain Step Time Domain Response (6 dB Gain Step)