Datasheet

5
LTC1404
1404fa
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
Bipolar Mode Differential
Nonlinearity vs Output Code
OUTPUT CODE
2048
DIFFERENTIAL NONLINEARITY (LSBs)
2048
1404 G03
1024
0
1024
1.00
0.75
0.50
0.25
0
0.25
0.50
0.75
1.00
1536
512 512
1536
f
SAMPLE
= 600kHz
OUTPUT CODE
0
DIFFERENTIAL NONLINEARITY (LSBs)
4096
1404 G01
1024
2048
3072
1.00
0.75
0.50
0.25
0
0.25
0.50
0.75
1.00
512
1536
2560
3584
f
SAMPLE
= 600kHz
Unipolar Mode Differential
Nonlinearity vs Output Code
OUTPUT CODE
0
INTEGRAL NONLINEARITY (LSBs)
4096
1404 G02
1024
2048
3072
1.00
0.75
0.50
0.25
0
0.25
0.50
0.75
1.00
512
1536
2560
3584
f
SAMPLE
= 600kHz
Unipolar Mode Integral
Nonlinearity vs Output Code
Unipolar Mode 4096 Nonaverage
FFT with 300kHz Signal
Unipolar Mode 4096 Nonaverage
FFT with 100kHz Signal
OUTPUT CODE
2048
INTEGRAL NONLINEARITY (LSBs)
2048
1404 G04
1024
0
1024
1.00
0.75
0.50
0.25
0
0.25
0.50
0.75
1.00
1536
512 512
1536
f
SAMPLE
= 600kHz
Bipolar Mode Integral
Nonlinearity vs Output Code
Unipolar Mode
ENOB and Signal/(Noise +
Distortion) vs Input Frequency
INPUT FREQUENCY (kHz)
10
EFFECTIVE NUMBER OF BITS
SIGNAL/(NOISE + DISTORTION) (dB)
12
11
10
9
8
7
6
5
4
3
2
1
0
74
68
62
56
50
100 1000
1404 G07
f
SAMPLE
= 600kHz
NYQUIST
FREQUENCY
INPUT FREQUENCY (kHz)
80
70
60
50
40
30
20
10
0
100
1404 G08
10
1000
SIGNAL-TO-NOISE RATIO (dB)
f
SAMPLE
= 600kHz
INPUT FREQUENCY (kHz)
80
70
60
50
40
30
20
10
0
100
1404 G09
10
1000
SIGNAL-TO-NOISE RATIO (dB)
f
SAMPLE
= 600kHz
Unipolar Mode
Signal-to-Noise Ratio (Without
Harmonics) vs Input Frequency
Bipolar Mode
Signal-to-Noise Ratio (Without
Harmonics) vs Input Frequency
FREQUENCY (kHz)
0 60 90 120 150 180 210 240 270 300
AMPLITUDE (dB)
1404 G05
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
100
110
120
30
f
SAMPLE
= 600kHz
f
IN
= 99.1699kHz
SINAD = 71dB
THD = –77dB
FREQUENCY (kHz)
0 60 90 120 150 180 210 240 270 300
AMPLITUDE (dB)
1404 G06
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
100
110
120
30
f
SAMPLE
= 600kHz
f
IN
= 298.681kHz
SINAD = 71dB
THD = –73dB