Datasheet

13
2188f
LTC2188
Typical perForMance characTerisTics
Shorted Input Histogram
Integral Non-Linearity (INL) Differential Non-Linearity (DNL)
OUTPUT CODE
0
–4.0
–3.0
–2.0
–1.0
INL ERROR (LSB)
0
1.0
4.0
3.0
2.0
16384
32768 49152 65536
2188 G01
–1.0
–0.4
–0.2
–0.6
–0.8
DNL ERROR (LSB)
0
0.4
0.2
0.6
0.8
1.0
2188 G02
OUTPUT CODE
0
16384
32768 49152 65536
OUTPUT CODE
32836
1000
0
3000
2000
COUNT
4000
5000
10000
9000
8000
7000
6000
32842
32848 32854 32860
2188 G03
INPUT FREQUENCY (MHz)
0
72
71
70
78
77
76
75
74
73
SNR (dBFS)
50 100 150 200 250 300
2188 G04
SINGLE-ENDED
ENCODE
DIFFERENTIAL
ENCODE
SNR vs Input Frequency, –1dBFS,
20Msps, 2V Range
0 50 100 150 200 250 300
INPUT FREQUENCY (MHz)
90
85
80
75
70
65
100
95
2ND AND 3RD HARMONIC (dBFS)
2188 G05
2ND
3RD
2nd, 3rd Harmonic vs Input
Frequency, –1dBFS, 20Msps,
2V Range
0 50 100 150 200 250 300
INPUT FREQUENCY (MHz)
90
85
80
75
70
65
100
95
2ND AND 3RD HARMONIC (dBFS)
2188 G06
2ND
3RD
2nd, 3rd Harmonic vs Input
Frequency, –1dBFS, 20Msps,
1V Range
SFDR vs Input Level,
f
IN
= 70MHz, 20Msps, 2V Range
INPUT LEVEL (dBFS)
–80
60
50
40
30
20
80
70
SFDR (dBc AND dBFS)
90
100
130
120
110
–70 –60 –50 –40 –30 –20 –10 0
2188 G07
dBFS
dBc
I
VDD
vs Sample Rate, 5MHz,
–1dBFS, Sine Wave Input on
Each Channel
SAMPLE RATE (Msps)
0
34
39
44
29
49
I
VDD
(mA)
8 124 16 20
2188 G08
CMOS OUTPUTS
3.5mA LVDS OUTPUTS