LTC2143-12_15 Datasheet, PDF (12/38 Pages) Linear Technology – 12-Bit, 125Msps/105Msps/ 80Msps Low Power Dual ADCs

LTC2145-12/
LTC2144-12/LTC2143-12
TYPICAL PERFORMANCE CHARACTERISTICS
LTC2144-12: I_VDD vs Sample
Rate, 5MHz, –1dBFS Sine Wave
Input on Each Channel
85
80
LVDS OUTPUTS
75
70
CMOS OUTPUTS
65
60
55
50
0
25
50
75
SAMPLE RATE (Msps)
100
21454312 G28
LTC2144-12: IO_VDD vs Sample
Rate, 5MHz, –1dBFS, Sine Wave
on Each Input
70
60 3.5mA LVDS
50
40
1.75mA LVDS
30
20
10
0
0
1.8V CMOS
1.2V CMOS
25
50
75
100
SAMPLE RATE (Msps)
21454312 G29
LTC2144-12: SNR vs SENSE,
f_IN = 5MHz, –1dBFS
72
71
70
69
68
67
66
65
0.6 0.7 0.8 0.9 1 1.1 1.2 1.3
SENSE PIN (V)
21454312 G30
LTC2143-12: Integral
Non-Linearity (INL)
1.0
0.8
0.6
0.4
0.2
0.0
0.2
–0.4
–0.6
–0.8
–1.0
0
1024
2048
3072
4096
OUTPUT CODE
21454312 G31
LTC2143-12: Differential
Non-Linearity (DNL)
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
0
1024
2048
3072
4096
OUTPUT CODE
21454312 G32
LTC2143-12: 64k Point FFT,
f_IN = 5MHz, –1dBFS, 80Msps
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
0
10
20
30
40
FREQUENCY (MHz)
21454312 G33
LTC2143-12: 64k Point FFT,
f_IN = 30MHz, –1dBFS, 80Msps
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
0
10
20
30
40
FREQUENCY (MHz)
21454312 G34
12
LTC2143-12: 64k Point FFT,
f_IN = 70MHz, –1dBFS, 80Msps
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
0
10
20
30
40
FREQUENCY (MHz)
21454312 G35
LTC2143-12: 64k Point FFT,
f_IN = 140MHz, –1dBFS, 80Msps
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
0
10
20
30
40
FREQUENCY (MHz)
21454312 G36
21454312fa