Datasheet

LTC2175-12/
LTC2174-12/LTC2173-12
12
21754312fa
Typical perForMance characTerisTics
LTC2175-12: SFDR vs Input Level,
f
IN
= 70MHz, 2V Range, 125Msps
LTC2175-12: I
VDD
vs Sample Rate,
5MHz Sine Wave Input, –1dB
INPUT LEVEL (dBFS)
–80
60
50
40
30
20
10
0
80
70
SFDR (dBc AND dBFS)
90
100
110
–70
–60 –50 –40 –30 –20 –10 0
217512 G12
dBFS
dBc
INPUT FREQUENCY (MHz)
0
90
85
80
75
70
65
95
SFDR (dBFS)
50
100 150 200 250 300 350
217512 G10
LTC2175-12: SFDR vs Input
Frequency, –1dB, 2V Range,
125Msps
IO
VDD
vs Sample Rate, 5MHz Sine
Wave Input, –1dB
LTC2175-12: SNR vs SENSE,
f
IN
= 5MHz, –1dB
LTC2174-12: Integral Nonlinearity
(INL)
LTC2174-12: Differential
Nonlinearity (DNL)
LTC2174-12: 8k Point FFT, f
IN
= 5MHz
–1dBFS, 105Msps
SENSE PIN (V)
0.6
71
68
69
70
67
66
72
SNR (dBFS)
0.7 0.8 0.9 1.1 1.2 1.31
217512 G15
OUTPUT CODE
0
–1.0
–0.4
–0.6
–0.8
INL ERROR (LSB)
–0.2
0
0.2
0.4
0.6
0.8
1.0
1024
2048 3072 4096
217512 G21
OUTPUT CODE
0
–1.0
–0.4
–0.2
–0.6
–0.8
DNL ERROR (LSB)
0
0.4
0.2
0.6
0.8
1.0
1024
2048 3072 4096
217512 G22
FREQUENCY (MHz)
0
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
10
20 30 40 50
217512 G23
SAMPLE RATE (Msps)
290
280
270
260
250
240
230
220
210
I
VDD
(mA)
0 25 50 75 100 125
217512 G53
SAMPLE RATE (Msps)
50
40
30
20
10
0
IO
VDD
(mA)
0 25 50 75 100 125
217512 G51
1-LANE, 1.75mA
2-LANE, 3.5mA
2-LANE, 1.75mA
1-LANE, 3.5mA
INPUT LEVEL (dBFS)
60
50
40
30
20
10
0
80
70
SNR (dBc AND dBFS)
–60 –50 –40 –30 –20 –10 0
217512 G50
dBFS
dBc
LTC2175-12: SNR vs Input Level,
f
IN
= 70MHz, 2V Range, 125Msps