Datasheet

LTC6420-20
6
642020fb
TYPICAL PERFORMANCE CHARACTERISTICS
FREQUENCY (MHz)
10
NOISE FIGURE (dB)
15
10
2
4
12
14
6
8
0
11
3
5
13
7
9
1
INPUT REFERRED NOISE VOLTAGE (nV/
√Hz
)
6
4
2
0
100 1000
642020 G08
NOISE FIGURE
e
IN
Noise Figure and Input Referred
Noise Voltage vs Frequency
TIME (ns)
0
OUTPUT VOLTAGE (V)
2.5
0.5
1.0
2.0
1.5
0
50 100 150
200
642020 G10
–OUT
R
L
= 87.5Ω PER OUTPUT
+OUT
Overdrive Transient Response
TIME (ns)
0
OUTPUT VOLTAGE (V)
1.35
1.20
1.25
1.30
1.15
2468
10
642020 G09
–OUT
+OUT
R
L
= 87.5Ω PER OUTPUT
Small Signal Transient Response
FREQUENCY (MHz)
THIRD ORDER IMD (dBc)
–40
–50
–60
–80
–90
–70
–110
–100
642020 G12
DIFFERENTIAL INPUT
V
OUT
= 2V
P-P
COMPOSITE
0 50 100 150 200 250 300
DRIVING LTC2285
Third Order Intermodulation
Distortion vs Frequency
FREQUENCY (MHz)
OUTPUT IP3 (dBm)
60
50
40
20
10
30
0
642020 G13
DIFFERENTIAL INPUT
V
OUT
= 2V
P-P
COMPOSITE
(NOTE 7)
0 50 100 150 200 250 300
DRIVING LTC2285
Equivalent Output Third Order
Intercept vs Frequency
Channel Separation
vs Frequency (Note 8)
Harmonic Distortion vs Frequency
FREQUENCY (MHz)
050
HARMONIC DISTORTION (dBc)
–40
–50
–60
–80
–90
–70
–100
100 150 200 250 30
0
642020 G11
HD2 NO R
L
HD2 200Ω R
L
HD3 NO R
L
HD3 200Ω R
L
DIFFERENTIAL INPUT
V
OUT
= 2V
P-P
FREQUENCY (MHz)
CHANNEL SEPARATION (dB)
642020 G14
120
100
20
40
60
80
0
1 100 100010