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