Datasheet

LTC2142-14/
LTC2141-14/LTC2140-14
10
21421014fa
TYPICAL PERFORMANCE CHARACTERISTICS
LTC2142-14: SFDR vs Input Level,
f
IN
= 70MHz, 65Msps, 2V Range
LTC2142-14: I
VDD
vs Sample
Rate, 5MHz, –1dBFS, Sine Wave
Input on Each Channel
LTC2142-14: 2nd, 3rd Harmonic
vs Input Frequency, –1dBFS,
65Msps, 2V Range
LTC2142-14: I
OVDD
vs Sample
Rate, 5MHz, –1dBFS, Sine Wave
Input on Each Channel
LTC2142-14: SNR vs SENSE,
f
IN
= 5MHz, –1dBFS
LTC2141-14: Integral
Nonlinearity (INL)
LTC2141-14: Differential
Nonlinearity (DNL)
LTC2141-14: 64k Point FFT,
f
IN
= 5MHz, –1dBFS, 40Msps
LTC2142-14: 2nd, 3rd Harmonic
vs Input Frequency, –1dBFS,
65Msps, 1V Range
0 50 100 150 200 250 300
INPUT FREQUENCY (MHz)
90
85
80
75
70
65
100
95
2ND AND 3RD HARMONIC (dBFS)
21421014 G10
2ND
3RD
0 50 100 150 200 250 300
INPUT FREQUENCY (MHz)
90
85
80
75
70
65
100
95
2ND AND 3RD HARMONIC (dBFS)
21421014 G11
3RD
2ND
INPUT LEVEL (dBFS)
120
130
90
80
100
110
SFDR (dBc AND dBFS)
70
50
60
40
30
20
21421014 G12
–80
–70
–60 –50 –40 –30 –20 –10 0
dBc
dBFS
SAMPLE RATE (Msps)
0
50
40
55
45
35
60
I
VDD
(mA)
10 20 60
21421014 G13
30 40 50
CMOS OUTPUTS
LVDS OUTPUTS
SAMPLE RATE (Msps)
0
50
60
30
40
20
10
0
70
I
OVDD
(mA)
20 40 50 60
21421014 G14
10 30
3.5mA LVDS
1.75mA LVDS
1.8V CMOS
SENSE PIN (V)
0.6
70
71
68
69
67
66
72
73
74
SNR (dBFS)
0.8 10.7 0.9 1.1 1.2 1.3
21421014 G15
OUTPUT CODE
–2.0
–1.0
–0.5
–1.5
INL ERROR (LSB)
0
0.5
1.0
1.5
2.0
21421014 G16
0
4096
8192 12288 16384
OUTPUT CODE
–1.0
–0.4
–0.2
–0.6
–0.8
DNL ERROR (LSB)
0
0.4
0.2
0.6
0.8
1.0
21421014 G17
0
4096
8192 12288 16384
FREQUENCY (MHz)
0
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
5 101520
21421014 G18