5
LTC1419
1419fb
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
S/(N + D) vs Input Frequency
and Amplitude
Distortion vs Input Frequency
Spurious-Free Dynamic Range
vs Input Frequency
Differential Nonlinearity
vs Output Code
Integral Nonlinearity
vs Output Code
Input Common Mode Rejection
vs Input Frequency
INPUT FREQUENCY (Hz)
SIGNAL/(NOISE
+
DISTORTION)
(dB)
90
80
70
60
50
40
30
20
10
0
1k
100k
1M
2M
1419 G01
10k
VIN = 0dB
VIN = –20dB
VIN = –60dB
INPUT FREQUENCY (Hz)
AMPLITUDE
(dB
BELOW
THE
FUNDAMENTAL)
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
– 110
1419 G03
THD
2ND
3RD
1k
100k
1M
2M
10k
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
1419 G02
100k
1M
2M
10k
Intermodulation Distortion Plot
INPUT FREQUENCY (Hz)
10k
SPURIOUS-FREE
DYNAMIC
RANGE
(dB)
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
100k
1M
2M
1419 G04
FREQUENCY (kHz)
0
–120
AMPLITUDE
(dB)
–100
–80
–60
–40
100
200
300
400
1419 G05
–20
0
50
150
250
350
fSAMPLE = 800kHz
fIN1 = 95.8984375kHz
fIN2 = 104.1015625kHz
OUTPUT CODE
0
–1.0
DNL
ERROR
(LSBs)
– 0.5
0
0.5
1.0
4096
8192
1419 G06
12288
16384
Power Supply Feedthrough
vs Ripple Frequency
OUTPUT CODE
0
–1.0
INL
ERROR
(LSBs)
– 0.5
0
0.5
1.0
4096
8192
1419 G07
12288
16384
RIPPLE FREQUENCY (Hz)
AMPLITUDE
OF
POWER
SUPPLY
FEEDTHROUGH
(dB)
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
1k
100k
1M
2M
1419 G08
10k
VSS
DGND
VDD
INPUT FREQUENCY (Hz)
1
COMMON
MODE
REJECTION
(dB)
80
70
60
50
40
30
20
10
0
10
100
1419 G09
1000
10000