Datasheet

LTC2157-12/
LTC2156-12/LTC2155-12
14
21576512f
TYPICAL PERFORMANCE CHARACTERISTICS
LTC2155-12: SNR vs Input Level,
f
IN
= 70MHz, 1.5V Range, 170Msps
LTC2155-12: SFDR vs Input Level,
f
IN
= 70MHz, 1.5V Range, 170Msps
LTC2155-12: SFDR vs Input
Frequency, –1dBFS, 1.5V Range,
170Msps
LTC2155-12: SNR vs Input
Frequency, –1dBFS, 1.5V Range,
170Msps
LTC2155-12: I
VDD
vs Sample Rate,
15MHz Sine Wave Input, –1dBFS
LTC2155-12: Frequency Response
SAMPLE RATE (Msps)
0
I
VDD
(mA)
250
260
136
21576512 G55
240
230
220
210
200
190
180
34
68
102
170
AMPLITUDE (dBFS)
0
SFDR (dBFS)
40
20
80
100
120
–70
–50
–40 0 10
21576512 G56
60
–80 –60
–30
–20
–10
dBFS
dBc
AMPLITUDE (dBFS)
0
SNR (dBFS)
10
50
40
60
70
–50
–30
0
21576512 G57
30
20
dBFS
dBc
–60 –40
–20
–10
INPUT FREQUENCY (MHz)
0
SFDR (dBFS)
50
40
60
70
800
21576512 G38
20
30
10
0
200
400
500
1000
90
80
600
100
300
900
700
INPUT FREQUENCY (MHz)
0
SNR (dBFS)
55
50
60
65
800
21576512 G59
45
40
200
400
500
1000
75
70
600
100
300
900
700
INPUT FREQUENCY (MHz)
–5.0
INPUT AMPLITUDE (dBFS)
–4.5
–3.5
–3.0
–2.5
1000
–0.5
21576512 G60
–4.0
100
–2.0
–1.5
–1.0