LTC1420I データシートの表示（PDF） - Linear Technology
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LTC1420I Datasheet PDF : 20 Pages
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TYPICAL PERFOR A CE CHARACTERISTICS
LTC1420
S/(N+D) vs Input Frequency
and Amplitude
75
VIN = 0dB
70
VIN = –6dB
65
DUAL SUPPLIES
60 ±2.048V RANGE
GAIN = 1×
55
VIN = –20dB
50
0.1
1
10
INPUT FREQUENCY (MHz)
100
1420 G01
S/(N+D) vs Input Frequency
and Amplitude
75
SINGLE SUPPLY
70
VIN = 0dB
±1.024V RANGE
GAIN = 2×
VIN = –6dB
65
60
55
50
0.1
VIN = –20dB
1
10
INPUT FREQUENCY (MHz)
100
1420 G02
SFDR vs Input Frequency,
Differential Input
–50
DUAL SUPPLIES
–55 ±2.048V RANGE
–60
GAIN = 1×
AIN = 0dBFS
–65
–70
–75
–80
–85
–90
–95
–100
0.1
1
10
INPUT FREQUENCY (MHz)
100
1420 F07
Spurious-Free Dynamic Range
vs Input Amplitude
100
dBFS
90
80
dBc
70
60
50
40
–50
DUAL SUPPLIES
±2.048V RANGE
GAIN = 1×
fIN = 5MHz
–40 –30 –20 –10
0
INPUT AMPLITUDE (dBFS)
1420 G03
Spurious-Free Dynamic Range
vs Input Amplitude
100
dBFS
90
80
dBc
70
60
50
40
–50
SINGLE SUPPLY
±1.024V RANGE
GAIN = 2×
fIN = 5MHz
–40 –30 –20 –10
0
INPUT AMPLITUDE (dBFS)
1420 G05
SFDR vs Input Frequency,
Differential Input
–50
SINGLE SUPPLY
–55 ±1.024V RANGE
–60
GAIN = 2×
AIN = 0dBFS
–65
–70
–75
–80
–85
–90
–95
–100
0.1
1
10
INPUT FREQUENCY (MHz)
100
1420 F08
Distortion vs Input Frequency
–50
DUAL SUPPLIES
–55 ±2.048V RANGE
GAIN = 1×
–60 AIN = 0dBFS
–65
–70
–75
–80
THD
–85
3RD 2ND
–90
–95
0
1
10
INPUT FREQUENCY (MHz)
100
1420 G04
Distortion vs Input Frequency
–50
SINGLE SUPPLY
–55 ±1.024V RANGE
GAIN = 2×
–60 AIN = 0dBFS
–65
–70
–75
–80
THD
3RD
–85
2ND
–90
–95
0
1
10
INPUT FREQUENCY (MHz)
100
1420 G06
Grounded Input Histogram
VREF = 4.096V 410554
GAIN = 1×
1570
N–1
N
CODE
1572
N+1
1420 F09
5
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