Datasheet

11
21576512f
LTC2157-12/
LTC2156-12/LTC2155-12
TYPICAL PERFORMANCE CHARACTERISTICS
LTC2156-12: I
OVDD
vs Sample Rate,
15MHz Sine Wave Input, –1dBFS
LTC2156-12: I
VDD
vs Sample Rate,
15MHz Sine Wave Input, –1dBFS
LTC2156-12: 32K Point FFT,
f
IN
= 907MHz, –1dBFS, 210Msps
LTC2156-12: 32K Point 2-Tone
FFT, f
IN
= 70.0MHz and 69.0MHz,
210Msps
LTC2156-12: SFDR vs Input Level,
f
IN
= 70MHz, 1.5V Range, 210Msps
LTC2156-12: 32K Point FFT,
f
IN
= 417MHz, –1dBFS, 210Msps
LTC2156-12: 32K Point FFT,
f
IN
= 567MHz, –1dBFS, 210Msps
LTC2156-12: Shorted
Input Histogram
LTC2156-12: 32K Point FFT,
f
IN
= 379MHz, –1dBFS, 210Msps
FREQUENCY (MHz)
0
–120
AMPLITUDE (dBFS)
–100
–80
–60
–40
0
20
40 60 80
21576512 G28
100
–20
FREQUENCY (MHz)
0
–120
AMPLITUDE (dBFS)
–100
–80
–60
–40
0
20
40 60 80
21576512 G29
100
–20
FREQUENCY (MHz)
0
–120
AMPLITUDE (dBFS)
–100
–80
–60
–40
0
20
40 60 80
21576512 G30
100
–20
FREQUENCY (MHz)
0
–120
AMPLITUDE (dBFS)
–100
–80
–60
–40
0
20
40 60 80
21576512 G31
100
–20
FREQUENCY (MHz)
0
–120
AMPLITUDE (dBFS)
–100
–80
–60
–40
0
20
40 60 80 100
21576512 G32
–20
OUTPUT CODE
2044 2048
COUNT
12000
16000
20000
21576512 G33
8000
4000
10000
14000
18000
6000
2000
0
2052
2056
SAMPLE RATE (Msps)
0
I
OVDD
(mA)
60
70
168
21576512 G34
50
40
30
42
84
126
210
LVDS CURRENT 3.5mA
LVDS CURRENT 1.75mA
SAMPLE RATE (Msps)
0
I
VDD
(mA)
260
280
168
21576512 G35
240
220
200
180
42
84
126
210
AMPLITUDE (dBFS)
0
SFDR (dBFS)
40
20
80
100
120
–70
–50
–40 0
21576512 G36
60
–80 –60
–30
–20
–10 10
dBFS
dBc