LTC2188 Datasheet, PDF (13/36 Pages) Linear Technology – 16-Bit, 20Msps Low Power Dual ADC

Typical Performance Characteristics
LTC2188
Integral Non-Linearity (INL)
4.0
3.0
2.0
1.0
0
–1.0
–2.0
–3.0
–4.0
0
16384 32768 49152 65536
OUTPUT CODE
2188 G01
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
16384 32768 49152 65536
OUTPUT CODE
2188 G02
Shorted Input Histogram
10000
9000
8000
7000
6000
5000
4000
3000
2000
1000
0
32836
32842 32848 32854
OUTPUT CODE
32860
2188 G03
SNR vs Input Frequency, –1dBFS,
20Msps, 2V Range
78
2nd, 3rd Harmonic vs Input
Frequency, –1dBFS, 20Msps,
2V Range
100
2nd, 3rd Harmonic vs Input
Frequency, –1dBFS, 20Msps,
1V Range
100
77
SINGLE-ENDED
95
ENCODE
76
90
75
85
74
DIFFERENTIAL
ENCODE
80
73
72
75
71
70
95
90
3RD
85
2ND
80
75
70
3RD
2ND
70
0 50 100 150 200 250 300
INPUT FREQUENCY (MHz)
2188 G04
65
0 50 100 150 200 250 300
INPUT FREQUENCY (MHz)
2188 G05
65
0 50 100 150 200 250 300
INPUT FREQUENCY (MHz)
2188 G06
SFDR vs Input Level,
f_IN = 70MHz, 20Msps, 2V Range
130
120
110
dBFS
100
90
80
dBc
70
60
50
40
30
20
–80 –70 –60 –50 –40 –30 –20 –10 0
INPUT LEVEL (dBFS)
2188 G07
I_VDD vs Sample Rate, 5MHz,
–1dBFS, Sine Wave Input on
Each Channel
49
3.5mA LVDS OUTPUTS
44
39
CMOS OUTPUTS
34
29
0
4
8
12
16
SAMPLE RATE (Msps)
20
2188 G08
2188f
13