LTC1282ACS Ver la hoja de datos (PDF) - Linear Technology
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LTC1282ACS Datasheet PDF : 24 Pages
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LTC1282
TYPICAL PERFOR A CE CHARACTERISTICS
Integral Nonlinearity
1
0.5
Differential Nonlinearity
1
0.5
0
0
– 0.5
– 0.5
–1
0 512 1024 1536 2048 2560 3072 3584 4096
CODE
LTC1282 • TPC01
Supply Current (IDD)
vs Supply Voltage
20
18
fSAMPLE = 160kHz
TA = 25°C
16
14
12
SINGLE
SUPPLY
10
8
DUAL
SUPPLIES
6
4
2
0
2.5
3
3.5
4
4.5
5
SUPPLY VOLTAGE (V)
LTC1282 • TPC04
Distortion vs Input Frequency
(Bipolar)
0
– 10
fSAMPLE = 140kHz
±3V SUPPLIES
–20 BIPOLAR
– 30
– 40
– 50
– 60
– 70
– 80
– 90
– 100
1k
3rd HARMONIC
THD
2nd HARMONIC
10k
100k
1M
10M
INPUT FREQUENCY (Hz)
LTC1282 • TPC07
–1
0 512 1024 1536 2048 2560 3072 3584 4096
CODE
LTC1282 • TPC02
ENOBs and S/(N + D)
vs Input Frequency
12
11
10
UNIPOLAR
9 (0V – 2.5V INPUT)
74
BIPOLAR 68
(± 1.25V
INPUT)
62
56
8
50
7
6
5
4
3
2 fSAMPLE = 160kHz
1
VS = ±2.7V BIPOLAR
VS = 3V UNIPOLAR
0
1k
10k
100k
1M
10M
INPUT FREQUENCY (Hz)
LTC1282 • TPC05
Power Supply Feedthrough
vs Ripple Frequency
0
– 10
fSAMPLE = 140kHz
VDD (VRIPPLE = 2.5mV)
– 20
VSS (VRIPPLE = 2.5mV)
– 30
DGND (VRIPPLE = 250mV)
– 40
– 50
– 60
– 70
– 80
– 90
– 100
1k
10k
100k
1M
RIPPLE FREQUENCY (Hz)
LTC1282 • TPC08
Supply Current (IDD)
vs Temperature
10
9
fSAMPLE = 160kHz
VDD = 3V
8
7
6
5
4
3
2
1
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
LTC1282 • TPC03
Distortion vs Input Frequency
(Unipolar)
0
– 10
fSAMPLE = 160kHz
3V SUPPLY
–20 UNIPOLAR
– 30
– 40
– 50
THD
– 60
3rd HARMONIC
– 70
2nd HARMONIC
– 80
– 90
– 100
1k
10k
100k
1M
10M
INPUT FREQUENCY (Hz)
LTC1282 • TPC06
Intermodulation Distortion Plot
0
fSAMPLE = 160kHz
– 20
fIN1 = 19.0kHz
fIN2 = 20.6kHz
VDD = 3V
– 40
UNIPOLAR
– 60
– 80
– 100
– 120
0 10k 20k 30k 40k 50k 60k 70k 80k
FREQUENCY (Hz)
LTC1282 • TPC09
6
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