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LTC6945 Datasheet(PDF) 10 Page - Linear Technology

Part # LTC6945
Description  16-Bit, 20Msps Low Noise Dual ADC
PDF  36 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC6945 Datasheet(HTML) 10 Page - Linear Technology

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LTC2270
10
2270f
TYPICAL PERFORMANCE CHARACTERISTICS
SFDR vs Input Level, fIN = 5MHz,
20Msps, 2.1V Range
INPUT FREQUENCY (MHz)
0
85
80
75
70
90
95
105
100
20
40
60
80
100
120
140
2270 G12
2ND
3RD
INPUT LEVEL (dBFS)
–80
40
60
50
80
70
130
120
110
100
90
–70
–40
–50
–60
0
–10
–20
–30
2270 G13
dBFS
dBc
0
20
40
60
80
100
120
140
INPUT FREQUENCY (MHz)
83
82
81
80
79
85
84
2270 G10
SINGLE-ENDED
ENCODE
DIFFERENTIAL
ENCODE
SNR vs Input Frequency, –1dBFS,
20Msps, 2.1V Range
IVDD vs Sample Rate, 5MHz,
–1dBFS Sine Wave Input on
Each Channel
IOVDD vs Sample Rate, 5MHz,
–1dBFS Sine Wave Input on
Each Channel
SNR, SFDR vs Sample Rate,
fIN = 5MHz, –1dBFS
SFDR vs Analog Input Common
Mode, fIN = 9.7MHz, 20Msps,
2.1V Range
SNR vs SENSE,
fIN = 5MHz, –1dBFS
SAMPLE RATE (Msps)
0
80
70
90
100
5
101520
2270 G14
3.5mA LVDS
OUTPUTS
CMOS OUTPUTS
SAMPLE RATE (Msps)
0
10
0
20
30
80
70
60
50
40
5
101520
2270 G15
3.5mA LVDS
1.75mA LVDS
1.8V CMOS
SENSE PIN (V)
0.6
77
78
79
80
81
82
85
84
83
0.8
0.7
1
1.2
1.1
0.9
1.3
2270 G16
80
85
90
95
100
2270 G17
INPUT COMMON MODE (V)
0.6
0.8
0.7
0.9
1.1
1
1.2
VDD 1.9V
VDD 1.7V
SAMPLE RATE (Msps)
0
80
90
100
110
10
515
20
2270 G18
SFDR
SNR
020
60
40
80
100
120
140
INPUT FREQUENCY (MHz)
95
90
85
80
75
70
105
100
2270 G11
2ND
3RD
2nd, 3rd Harmonic vs Input
Frequency, –1dBFS, 20Msps,
2.1V Range
2nd, 3rd Harmonic vs Input
Frequency, –1dBFS, 20Msps,
1.05V Range



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