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LTC2641 Datasheet(PDF) 6 Page - Linear Technology

Part # LTC2641
Description  18-Bit, 1.6Msps, Low Power SAR ADC with 101dB SNR
PDF  24 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC2641 Datasheet(HTML) 6 Page - Linear Technology

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LTC2379-18
6
237918p
TYPICAL PERFORMANCE CHARACTERISTICS
32k Point FFT fS = 1.6Msps,
fIN = 2kHz
SNR, SINAD vs Input Frequency
THD, Harmonics
vs Input Frequency
SNR, SINAD vs Input level,
fIN = 2kHz
SNR, SINAD vs Reference
Voltage, fIN = 2kHz
THD, Harmonics vs Reference
Voltage, fIN = 2kHz
Integral Nonlinearity
vs Output Code
Differential Nonlinearity
vs Output Code
DC Histogram
OUTPUT CODE
0
65536
131072
196608
262144
–2.0
0.0
0.5
1.0
1.5
–0.5
–1.0
–1.5
2.0
238018 G01
FREQUENCY (kHz)
0
100 200 300 400
800
700
600
500
–180
–60
–40
–20
–80
–100
–120
–140
–160
0
237918 G04
SNR = 101.2dB
THD = –120dB
SINAD = 101.1dB
SFDR = 121dB
OUTPUT CODE
–1.0
0.5
0.0
–0.5
1.0
237918 G02
0
65536
131072
196608
262144
CODE
131073
131072
131071
131070
131069
131068
0
10000
60000
40000
20000
50000
30000
70000
237918 G03
TA = 25°C, VDD = 2.5V, OVDD = 2.5V, REF = 5V,
fSMPL = 1.6Msps, unless otherwise noted.
INPUT LEVEL (dB)
102.0
237918 G07
100.0
100.5
101.0
101.5
–40
–30
–20
–10
0
SINAD
SNR
REFERENCE VOLTAGE (V)
102
237918 G16
95
96
97
98
99
100
101
2.5
3.0
3.5
4.0
4.5
5.0
SINAD
SNR
–100
–110
237918 G17
–140
–135
–130
–125
–120
–115
–105
THD
2ND
3RD
REFERENCE VOLTAGE (V)
2.5
3.0
3.5
4.0
4.5
5.0
FREQUENCY (kHz)
105
237918 G05
80
85
90
95
100
0
25
50
75
100 125 150 175 200
SNR
SINAD
FREQUENCY (kHz)
–80
237918 G06
–140
–130
–120
–110
–100
–90
0
25
50
75
100 125 150 175 200
THD
3RD
2ND



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