Datasheet

LTC2142-12/
LTC2141-12/LTC2140-12
10
21421012fa
TYPICAL PERFORMANCE CHARACTERISTICS
LTC2142-12: SFDR vs Input Level,
f
IN
= 70MHz, 65Msps, 2V Range
LTC2142-12: I
VDD
vs Sample Rate, 5MHz, –1dBFS
Sine Wave Input on Each Channel
INPUT LEVEL (dBFS)
–80
40
30
20
10
0
60
50
SFDR (dBc AND dBFS)
70
80
110
100
90
–70 –60 –50 –40 –30 –20 –10 0
21421012 G12
dBFS
dBc
SAMPLE RATE (Msps)
0
50
40
45
35
55
I
VDD
(mA)
10 20 30 40 50 60
21421012 G13
CMOS OUTPUTS
LVDS OUTPUTS
0 50 100 150 200 250 300
INPUT FREQUENCY (MHz)
90
85
80
75
70
65
100
95
2ND AND 3RD HARMONIC (dBFS)
21421012 G10
2ND
3RD
LTC2142-12: 2nd, 3rd Harmonic
vs Input Frequency, –1dBFS,
65Msps, 2V Range
LTC2142-12: IO
VDD
vs Sample Rate, 5MHz, –1dBFS,
Sine Wave on Each Channel
LTC2142-12: SNR
vs SENSE, f
IN
= 5MHz, –1dBFS
LTC2141-12: Integral
Non-Linearity (INL)
LTC2141-12: Differential
Non-Linearity (DNL)
LTC2141-12: 64k Point FFT,
f
IN
= 5MHz, –1dBFS, 40Msps
SAMPLE RATE (Msps)
0
10
20
0
70
60
50
30
40
IOV
DD
(mA)
10 20 30 40 50 60
21421012 G14
1.8V CMOS
1.75mA LVDS
3.5mA LVDS
SENSE PIN (V)
0.6
67
66
68
69
72
71
70
SNR (dBFS)
0.7 0.8 0.9 1.1 1.2 1.31
21421012 G15
OUTPUT CODE
0
–1.0
–0.8
–0.6
–0.4
INL ERROR (LSB)
–0.2
0.0
0.2
1.0
0.6
0.8
0.4
1024
2048 3072 4096
21421012 G16
–1.0
–0.4
–0.2
–0.6
–0.8
DNL ERROR (LSB)
0
0.4
0.2
0.6
0.8
1.0
21421012 G17
OUTPUT CODE
0
1024
2048 3072 4096
FREQUENCY (MHz)
0
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
5 101520
21421012 G18
214
210
12f
FRE
Q
UEN
C
Y (MHz
)
0
5
1
0
15
20
21421012 G1
8
0 50 100 150 200 250 300
INPUT FREQUENCY (MHz)
90
85
80
75
70
65
100
95
2ND AND 3RD HARMONIC (dBFS)
21421012 G11
2ND
3RD
LTC2142-12: 2nd, 3rd Harmonic
vs Input Frequency, –1dBFS,
65Msps, 1V Range