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ManualsBrandsLINEAR TECHNOLOGY ManualsData collecting ICsData acquisition IC - AD converter (ADC) External , Internal SSOP 16
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LTC1863/LTC1867
6
18637fb
For more information www.linear.com/LTC1863
Signal-to-Noise Ratio vs
Frequency
Signal-to-(Noise + Distortion) vs
Input Frequency
Total Harmonic Distortion vs
Input Frequency
Integral Nonlinearity vs
Output Code
Differential Nonlinearity vs
Output Code
Histogram for 4096 Conversions
4096 Points FFT Plot (f
IN
= 1kHz)
4096 Points FFT Plot (f
IN
= 1kHz,
REFCOMP = External 5V)
Crosstalk vs Input Frequency
typical perFormance characteristics
(LTC1867)
OUTPUT CODE
0
INL (LBS)
49152
18637 GO1
16384 32768 65536
2.0
1.5
1.0
0.5
0
– 0.5
– 1.0
– 1.5
– 2.0
OUTPUT CODE
0
DNL (LSB)
4915216384 32768 65536
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
18637 GO2
CODE
–4
COUNTS
4
18637 GO3
–2–3
0–1
321
2500
2000
1500
1000
500
0
1
26
276
2152
579
122
5
0
935
FREQUENCY (kHz)
0
0
–20
–40
–60
–80
–100
–120
–140
75
18637 G04
25 50 100
AMPLITUDE (dB)
SNR = 88.8dB
SINAD = 87.9dB
THD = 95dB
f
SAMPLE
= 200ksps
INTERNAL REFERENCE
FREQUENCY (kHz)
0
0
–20
–40
–60
–80
–100
–120
–140
75
18637 G05
25 50 100
AMPLITUDE (dB)
SNR = 90dB
SINAD = 88.5dB
THD = 94dB
f
SAMPLE
= 200ksps
V
REF
= 0V
REFCOMP = EXT 5V
ACTIVE CHANNEL INPUT FREQUENCY (kHz)
1
RESULTING AMPLITUDE ON
SELECTED CHANNEL (dB)
–80
–90
–100
–110
–120
–130
–140
10 100 1000
18637 G06
ADJACENT PAIR
NONADJACENT PAIR
INPUT FREQUENCY (kHz)
1
AMPLITUDE (dB)
100
90
80
70
60
50
40
30
20
10 100
18637 G07
INPUT FREQUENCY (kHz)
1
AMPLITUDE (dB)
100
90
80
70
60
50
40
30
20
10 100
18637 G08
INPUT FREQUENCY (kHz)
1
AMPLITUDE (dB)
–20
–30
–40
–50
–60
–70
–80
–90
–100
10 100