![](http://datasheet.mmic.net.cn/Linear-Technology/LTC1418ACG-TRPBF_datasheet_101457/LTC1418ACG-TRPBF_5.png)
5
LTC1418
TYPICAL PERFORMANCE CHARACTERISTICS
UW
FREQUENCY (kHz)
0
–120
AMPLITUDE
(dB)
–100
–80
–60
–40
20
50
70
100
1418 G05
–20
0
10
30 40
60
80
90
fSAMPLE = 200kHz
fIN1 = 97.65625kHz
fIN2 = 104.248046kHz
Intermodulation Distortion Plot
FREQUENCY (kHz)
0
10
305070
90
AMPLITUDE
(dB)
0
–20
–40
–60
–80
–100
–120
20
40
60
80
1418 F02a
100
fSAMPLE = 200kHz
fIN = 9.9609375kHz
SFDR = 99.32
SINAD = 82.4
Nonaveraged, 4096 Point FFT,
Input Frequency = 10kHz
INPUT FREQUENCY (Hz)
10k
SPURIOUS-FREE
DYNAMIC
RANGE
(dB)
100k
1M
1418 G04
0
–20
–40
–60
–80
–100
–120
S/(N + D) vs Input Frequency
and Amplitude
INPUT FREQUENCY (Hz)
SIGNAL/(NOISE
+
DISTORTION)
(dB)
90
80
70
60
50
40
30
20
10
0
1k
100k
1M
1418 G01
10k
VIN = –60dB
VIN = 0dB
VIN = –20dB
FREQUENCY (kHz)
0
10
305070
90
AMPLITUDE
(dB)
0
–20
–40
–60
–80
–100
–120
20
40
60
80
1418 F02b
100
fSAMPLE = 200kHz
fIN = 97.509765kHz
SFDR = 94.29
SINAD = 81.4
Nonaveraged, 4096 Point FFT,
Input Frequency = 100kHz
Typical INL Curve
OUTPUT CODE
4096
0
–1.0
INL
(LSBs)
–0.5
0
0.5
1.0
8192
1418 TA02
12288
16384
OUTPUT CODE
0
–1.0
DNL
ERROR
(LSBs)
– 0.5
0
0.5
1.0
4096
8192
1418 G06
12288
16384
Differential Nonlinearity
vs Output Code
INPUT FREQUENCY (Hz)
AMPLITUDE
(dB
BELOW
THE
FUNDAMENTAL)
0
–20
–40
–60
–80
–100
–120
1418 G03
1k
100k
1M
10k
THD
2ND
3RD
Distortion vs Input Frequency
Spurious-Free Dynamic Range
vs Input Frequency
Signal-to-Noise Ratio
vs Input Frequency
INPUT FREQUENCY (Hz)
SIGNAL-TO
-NOISE
RATIO
(dB)
1k
0
90
80
70
60
50
40
30
20
10
1418 G02
100k
1M
10k