LTC2203/LTC2202
10
22032fd
LTC2203: 32K Point 2-Tone FFT,
fIN = 44.9MHz and 70.1MHz,
–7dBFS, PGA = 0
LTC2203: 32K Point 2-Tone FFT,
fIN = 44.9MHz and 70.1MHz,
–15dBFS, PGA = 0
LTC2203: SFDR vs Input Level,
fIN = 70.1MHz, PGA = 0,
Dither “Off”
LTC2203: SFDR vs Input Level,
fIN = 70.1MHz, PGA = 0,
Dither “On”
LTC2203: SFDR (HD2 or HD3)
vs Input Frequency
LTC2203: SNR vs Input Frequency
FREQUENCY(MHz)
0
–140
AMPLITUDE
(dBFS)
–120
–100
–80
0
–10
–30
–50
–70
–90
–110
–130
–40
26
–20
–60
4
8
10
12
22032 G28
FREQUENCY(MHz)
0
–140
AMPLITUDE
(dBFS)
–120
–100
–80
0
–10
–30
–50
–70
–90
–110
–130
–40
26
–20
–60
4
8
10
12
22032 G29
INPUT LEVEL (dBFS)
–70
–60
–50
–40
–30
–20
–10
0
SFDR
(dbc
AND
dBFS)
80
100
120
22032 G30
60
40
20
0
140
INPUT LEVEL (dBFS)
–70
SFDR
(dBc
AND
dBFS)
80
100
120
22032 G31
60
40
–60
–50
–40
–30
–20
–10
0
20
0
140
INPUT FREQUENCY (MHz)
0
SFDR
(dBc)
85
90
95
60
100
22032 G32
80
75
70
20
40
80
100
105
110
PGA = 1
PGA = 0
INPUT FREQUENCY (MHz)
0
73
SNR
(dBFS)
74
76
77
78
80
82
22032 G33
75
40
20
100
120
60
140
79
80
81
PGA = 0
PGA = 1
LTC2203: 32K Point FFT,
fIN = 70.1MHz, –1dBFS, PGA = 1
LTC2203: 32K Point FFT,
fIN = 70.1MHz, –10dBFS, PGA = 1
LTC2203: 32K Point FFT,
fIN = 70.1MHz, –20dBFS, PGA = 1
FREQUENCY(MHz)
0
–140
AMPLITUDE
(dBFS)
–120
–100
–80
0
–10
–30
–50
–70
–90
–110
–130
–40
26
–20
–60
4
8
10
12
22032 G25
FREQUENCY(MHz)
0
–140
AMPLITUDE
(dBFS)
–120
–100
–80
0
–10
–30
–50
–70
–90
–110
–130
–40
26
–20
–60
4
8
10
12
22032 G26
FREQUENCY(MHz)
0
–140
AMPLITUDE
(dBFS)
–120
–100
–80
0
–10
–30
–50
–70
–90
–110
–130
–40
26
–20
–60
4
8
10
12
22032 G27
TYPICAL PERFORMANCE CHARACTERISTICS