1402I Просмотр технического описания (PDF) - Linear Technology
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1402I Datasheet PDF : 24 Pages
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LTC1402
TYPICAL PERFOR A CE CHARACTERISTICS (Bipolar Mode Plots Run with Dual ±5V Supplies.
Unipolar Mode Plots Run with a Single 5V Supply. VDD = 5V, VSS = – 5V for Bipolar, VDD = 5V, VSS = 0V for Unipolar), TA = 25°C.
Sine Wave Spectrum Plot
(Bipolar) ±5V Supply
10
0
fSAMPLE = 2222222.22Hz
–10
fSINE = 109592.01Hz
2048 SAMPLES
–20
–30
–40
–50
–60
4TH
–70
2ND
5TH
–80
3RD
6TH
–90
–100
–110
–120
0
0.55
1.11
FREQUENCY (MHz)
1402 G09
Sine Wave Spectrum Plot
(Unipolar) 5V Supply
10
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
0
fSAMPLE = 2222222.22Hz
fSINE = 109592.01Hz
2048 SAMPLES
2ND
3RD
4TH
5TH
6TH
0.55
1.11
FREQUENCY (MHz)
1402 G12
4VP-P Power Bandwidth and
100mVP-P Small-Signal
Bandwidth
5
0
100mVP-P
–3
–5
4VP-P
– 10
– 15
– 20
– 25
0.1
1
10
100
FREQUENCY (MHz)
1000
1402 F07
Sine Wave Spectrum Plot
(Bipolar) Dual ±5V Supply
10
0 fSAMPLE = 2222222.22Hz
–10
fSINE = 1131727.43Hz
2048 SAMPLES
–20
–30
–40
–50
–60
2ND
–70
4TH
–80
6TH
–90
3RD
5TH
–100
–110
–120
0
0.55
1.11
FREQUENCY (MHz)
1402 G11
Sine Wave Spectrum Plot
(Unipolar) 5V Supply
10
0 fSAMPLE = 2222222.22Hz
–10
fSINE = 1131727.43Hz
2048 SAMPLES
–20
–30
–40
–50
–60
–70
2ND
–80
4TH
–90
6TH
3RD
5TH
–100
–110
–120
0
0.55
1.11
FREQUENCY (MHz)
1402 G08
IMD Spectrum Plot (Bipolar)
10
0
–10
fSAMPLE
fSINEA =
fSINEB =
= 2352941.18Hz
1250000Hz ±1V INTO
1199449Hz ±1V INTO
AAIINN–+
–20 IMD = 83.9dB
–30 2048 SAMPLES
–40
–50
–60
–70
–80
–90
fA – fB
2fB
fA – fB
2fA
fA – 2fB
3fB
fA + 2fB
3fA
–100
–110
–120
0
0.59
FREQUENCY (MHz)
2fA – fB
2fA + fB
1.18
1402 G10
IMD Spectrum Plot (Unipolar)
10
0
fSAMPLE
fSINEA =
= 2352941.18Hz
1250000Hz INTO
AIN+,
–10
1.5V TO 3.5V
–20 fSINEB = 1199449Hz INTO AIN–,
–30
1.5V TO 3.5V
IMD = – 84.1dB
–40 2048 SAMPLES
–50
–60
–70
–80
–90
fA – fB
2fB
fA + fB
2fA
3fB
2fA – fB, fA + 2fB
2fA + fB
3fA
–100
–110
–120
0
0.59
FREQUENCY (MHz)
fA – 2fB
1.18
1402 G13
PSRR vs Frequency
0
VCC
– 10
VSS
VDD
– 20
DGND
– 30
– 40
– 50
– 60
– 70
– 80
0.1
1
10
100
FREQUENCY (MHz)
1000
1402 G18
Load Regulation for VREF
4.100
4.090
4.080
4070
.4.060
4.050
4.040
0
0.4
0.8
1.2
1.6
2.0
LOAD CURRENT (mA)
1402 G20
6
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