LTC2172-12 Linear Technology, LTC2172-12 Datasheet - Page 14

• Manufacturer Part Number: LTC2172-12
• Description: (LTC217x-12) 65Msps/40Msps/ 25Msps Low Power Quad ADCs
• Manufacturer: Linear Technology

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LTC2172-12/
LTC2171-12/LTC2170-12
TYPICAL PERFORMANCE CHARACTERISTICS
14
–100
–110
–120
–100
–110
–120
–10
–20
–30
–40
–50
–60
–70
–80
–90
–10
–20
–30
–40
–50
–60
–70
–80
–90
72
71
70
69
68
67
66
0
0
LTC2170-12: 8k Point FFT,
f
0.6
IN
0
0
LTC2170-12: 8k Point FFT, f
–1dBFS, 25Msps
LTC2171-12: SNR vs SENSE,
f
IN
= 140MHz –1dBFS, 25Msps
= 5MHz, –1dBFS
0.7
0.8
FREQUENCY (MHz)
FREQUENCY (MHz)
SENSE PIN (V)
5
5
0.9
1
1.1
10
IN
10
1.2
= 5MHz
217212 G46
217212 G35
217212 G43
1.3
–100
–110
–120
–100
–110
–120
–0.2
–0.4
–0.6
–0.8
–1.0
–50
–60
–70
–80
–90
–10
–20
–30
–40
–50
–60
–70
–80
–90
–10
–20
–30
–40
1.0
0.8
0.6
0.4
0.2
0
0
0
LTC2170-12: Integral Nonlinearity
(INL)
0
0
LTC2170-12: 8k Point 2-Tone FFT,
f
25Msps
LTC2170-12: 8k Point FFT, f
–1dBFS, 25Msps
0
IN
= 68MHz, 69MHz, –1dBFS,
1024
FREQUENCY (MHz)
FREQUENCY (MHz)
OUTPUT CODE
5
5
2048
3072
IN
10
10
= 30MHz
217212 G41
217212 G44
217212 G47
4096
18000
12000
10000
16000
14000
–100
–110
–120
8000
6000
4000
2000
–0.2
–0.4
–0.6
–0.8
–1.0
–10
–20
–30
–40
–50
–60
–70
–80
–90
1.0
0.8
0.6
0.4
0.2
0
0
0
2049
LTC2170-12: Differential
Nonlinearity (DNL)
0
0
LTC2170-12: 8k Point FFT, f
–1dBFS, 25Msps
LTC2170-12: Shorted Input
Histogram
2050
1024
FREQUENCY (MHz)
OUTPUT CODE
OUTPUT CODE
5
2051
2048
2052
3072
IN
10
= 70MHz
21721012f
217212 G42
217212 G45
217212 G48
2053
4096