
AD8336
Rev. C | Page 13 of
–20
28
O
U
T
P
U
T
IP
3(
d
B
m
)
25
200
30
–800
VGAIN (mV)
–600
800
–400
600
–200
400
0
20
0
10
40
H
ARM
O
N
IC
D
IS
T
O
R
T
IO
N
(d
Bc)
–30
–50
–60
–80
–70
–40
VOUT = 0.5V p-p
VOUT = 1V p-p
VOUT = 2V p-p
VOUT = 4V p-p
OUTPUT SWING OF PREAMP LIMITS
MINIMUM USABLE VGAIN LEVELS
HD3
f = 5MHz
400
VGAIN (mV)
–600
800
–400
600
–200
200
0
06
22
8-
03
9
Figure 39. Third Harmonic Distortion vs. VGAIN
for Four Values of Output Voltage (VOUT)
HARM
O
NI
C
DI
S
T
O
RT
IO
N
(
d
B
c)
–60
–50
–20
–30
–40
1M
–70
FREQUENCY (Hz)
10M
50M
HD2
HD3
VOUT = 2V p-p
VGAIN = 0V
0
622
8-
0
40
Figure 40. Harmonic Distortion vs. Frequency
IM
D3
(
d
Bc)
–60
–50
–20
–30
–70
–40
–80
1M
FREQUENCY (Hz)
10M
100M
0
–10
VOUT = 1V p-p
VGAIN = 0V
TONES SEPARATED BY 100kHz
–90
06
22
8-
04
1
Figure 41. IMD3 vs. Frequency
5
15
35
1MHz 500mV
1MHz 1V
10MHz 500mV
10MHz 1V
VOUT = 1V p-p
VGAIN = 0V
COMPOSITE INPUTS SEPARATED BY 100kHz
06
22
8-
0
42
200
–800
VGAIN (mV)
–600
800
–400
600
–200
400
0
Figure 42. Output-Referred IP3 (OIP3) vs. VGAIN
at Two Frequencies and Two Input Levels
IP
1d
B
(
d
Bm
)
0
–30
–10
10
30
20
–20
VS = ±5V
VS = ±3V
VS = ±12V
INPUT LEVEL LIMITED
BY GAIN OF PREAMP
06
22
8-
0
43
Figure 43. Input P1dB (IP1dB) vs. VGAIN at Three Power Supply Values (VS)
VO
L
TA
G
E
(V
)
–1
2
0
1
3
–2
300
–100
TIME (ns)
100
200
0
–3
VIN (V)
VOUT (V)
0
62
28
-0
44
Figure 44. Large-Signal Pulse Response of the Preamp