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LT1818 Datasheet(PDF) 9 Page - Linear Technology

Part # LT1818
Description  Octal, 12-Bit Sign, 1.5Msps/Ch Simultaneous Sampling ADC
PDF  32 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1818 Datasheet(HTML) 9 Page - Linear Technology

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LTC2320-12
9
Rev B
For more information www.analog.com
TYPICAL PERFORMANCE CHARACTERISTICS
Step Response
(Fine Settling)
External Reference Supply
Current vs Sample Frequency
REF Output vs Temperature
Offset Error vs Temperature
Supply Current
vs Sample Frequency
OVDD Current vs SCK Frequency,
CLOAD = 10pF
CMRR vs Input Frequency
Crosstalk vs Input Frequency
Step Response
(Large Signal Settling)
TA = 25°C, VDD = 5V, OVDD = 2.5V, REFOUT1,2,3,4
= 4.096V, fSMPL = 1.5Msps, unless otherwise noted.
VCM = 4VP-P
FREQUENCY (kHz)
0
500
1000
1500
90
95
100
105
110
115
120
CMRR vs Input Frequency
232012 G10
4.096V RANGE
IN+ = 1.5MHz SQUARE WAVE
IN– = 0V
SETTLING TIME (ns)
–20 –10 0 10 20 30 40 50 60 70 80 90
–1024
0
1024
2048
3072
4096
232012 G12
IN+ = 1.5MHz
SQUARE WAVE
IN– = 0V
4.096V RANGE
SETTLING TIME (ns)
–20 –10 0 10 20 30 40 50 60 70 80 90
–100
–80
–60
–40
–20
0
20
40
60
80
100
(Fine Settling)
232012 G13
VREFOUT1,2,3,4 = 4.096V
VREFOUT1,2,3,4 = 2.048V
REFBUFEN = 0V
(EXT REF BUF
OVERDRIVING REF BUF)
SAMPLE FREQUENCY (Msps)
0
0.3
0.6
0.9
1.2
1.5
0
50
100
150
200
250
300
350
400
Current vs Sample Frequency
232012 G14
VDD = 3.3V
VDD = 5V
TEMPERATURE (°C)
–55 –35 –15 5
25 45 65 85 105 125
–3.00
–2.50
–2.00
–1.50
–1.00
–0.50
0
0.50
1.00
REF Output vs Temperature
232012 G15
TEMPERATURE (°C)
–55 –35 –15 5
25 45 65 85 105 125
–0.250
–0.125
0
0.125
0.250
Offset Error vs Temperature
232012 G16
VDD = 5V
VDD = 3.3V
SAMPLE FREQUENCY (Msps)
0
0.3
0.6
0.9
1.2
1.5
19
21
23
25
27
29
31
33
vs Sample Frequency
232012 G17
LVDS (4 LANES)
CMOS (2.5V, 8 LANES)
LOW POWER LVDS (4 LANES)
CMOS(1.8V, 8 LANES)
FULL SCALE SINUSOIDAL INPUT
SCK FREQUENCY (MHz)
0
50
100
150
200
250
300
0
1
2
3
4
5
6
7
8
12
14
16
18
20
22
24
26
28
30
32
CLOAD = 10pF,
232012 G18
FREQUENCY (kHz)
0
100 200 300 400 500 600 700
–100
–99
–98
–97
–96
–95
–94
–93
–92
–91
–90
232012 G11



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