LTC6401-20 Datasheet, PDF (7/16 Pages) Linear Technology – 1.3GHz Low Noise, Low Distortion Differential ADC Driver for 140MHz IF

TYPICAL PERFORMANCE CHARACTERISTICS
LTC6401-20
Harmonic Distortion (Unfiltered)
vs Frequency
–40
DIFFERENTIAL INPUT
–50 ^{VOUT = 2VP-P}
–60
–70
–80
–90
–100
–110
–120
0
HD2 NO R_L
HD2 200Ω R_L
HD3 NO R_L
HD3 200Ω R_L
50
100
150
200
FREQUENCY (MHz)
640120 G12
Harmonic Distortion (Filtered) vs
Frequency
–40
DIFFERENTIAL INPUT
–50
V_OUT = 2V_P-P
NO R_L
–60
–70
–80
–90
–100
–110
–120
0
HD2
HD3
50
100
150
200
FREQUENCY (MHz)
640120 G13
Third Order Intermodulation
Distortion vs Frequency
–40
UNFILTERED NO R_L
–50
UNFILTERED 200Ω R_L
FILTERED NO R_L
–60
–70
–80
–90
–100
–110
–120
0
DIFFERENTIAL INPUT
V_OUT = 2V_P-P COMPOSITE
50
100
150
200
FREQUENCY (MHz)
640120 G14
Harmonic Distortion (Unfiltered)
vs Frequency
–40
SINGLE-ENDED INPUT
–50 ^{VOUT = 2VP-P}
–60
Harmonic Distortion (Filtered) vs
Frequency
–40
SINGLE-ENDED INPUT
–50
V_OUT = 2V_P-P
NO R_L
–60
Third Order Intermodulation
Distortion vs Frequency
–40
UNFILTERED NO R_L
–50
UNFILTERED 200Ω R_L
FILTERED NO R_L
–60
–70
–70
–70
–80
–80
–80
–90
–90
–90
–100
–110
–120
0
HD2 NO R_L
HD2 200Ω R_L
HD3 NO R_L
HD3 200Ω R_L
50
100
150
200
FREQUENCY (MHz)
640120 G15
–100
–110
–120
0
Harmonic Distortion vs Output
Common Mode Voltage
(Unfiltered Outputs)
–40 _{DIFFERENTIAL INPUT}
V_OUT = 2V_P-P at 100MHz
–50 ^RL ^{= 400Ω}
HD2
HD3
50
100
150
200
FREQUENCY (MHz)
640120 G16
–100
–110
–120
0
SINGLE-ENDED INPUT
V_OUT = 2V_P-P COMPOSITE
50
100
150
200
FREQUENCY (MHz)
640120 G17
Equivalent Output 1dB
Compression Point vs Frequency
20 _{DIFFERENTIAL INPUT}
R_L = 400Ω
(NOTE 7)
19
–60
HD3
18
–70
17
–80
HD2
–90
16
–100
1.0 1.1 1.2 1.3 1.4 1.5
OUTPUT COMMON MODE VOLTAGE (V)
640120 G18
15
50
80 110 140 170 200
FREQUENCY (MHz)
640020 G19
640120f
7