Datasheet

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
V
IN
= 0dB
V
IN
= –20dB
V
IN
= –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 2M10k
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 2M10k
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
f
SAMPLE
= 800kHz
f
IN1
= 95.8984375kHz
f
IN2
= 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
V
SS
DGND
V
DD
INPUT FREQUENCY (Hz)
1
COMMON MODE REJECTION (dB)
80
70
60
50
40
30
20
10
0
10 100
1419 G09
1000 10000