SPT561 Просмотр технического описания (PDF) - Signal Processing Technologies
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SPT561 Datasheet PDF : 12 Pages
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SPT561 Typical Performance Characteristics (TA = +25°C, Circuit in Figure 1; unless specified)
Small Signal Gain and Phase
16
Po = 10dBm
14
12
10
8
6
0
0% Overshoot
Phase
Maximally Flat
0
-90
Gain
-180
-270
-360
50
100
150
200
250
Frequency (MHz)
Frequency Response vs. RL
Pi = -4dBm
RL = 50Ω
RL = 25Ω
RL = 75Ω
Fixed gain and
compensated vs. load
RL = 100Ω
0
50
100
150
200
250
Frequency (MHz)
Frequency Response vs. Gain (Ro, RL = 75Ω)
Vo = 2Vpp
Av = 10
Av = 5
Av = 15
Av = 20
Frequency Response vs. Gain
Po = 10dBm
Av = 10
Av = 5
Av = 15
Re-compensated at
each gain (see text)
Av = 20
0
50
100
150
200
250
Frequency (MHz)
Frequency Response vs. Power Supply
16
Po = 10dBm
14
±VCC = 18
12
±VCC = 15
10
±VCC = 12
8
Re-compensated at
each supply voltage
6
±VCC = 10
0
50
100
150
200
250
Frequency (MHz)
Gain Flatness/Deviation from Linear Phase
Po = 10dBm
Gain
Phase
Re-compensated
at each gain
0
50
100
150
200
250
Frequency (MHz)
Two Tone, 3rd-Order Intermodulation
45
Av = 5
40
Av = 10
35
Av = 15
30
Av = 20
25
Re-compensated
at each gain
20
0
20
40
60
80
100
Frequency (MHz)
Frequency Response Driving CL
Av = +5
Ro = 25
Vo = 2Vpp
CL = 20pF
CL = 100pF
CL = 50pF
Re-compensated
at each CL
0
50
100
150
200
250
Frequency (MHz)
0
20
40
60
80
100
Frequency (MHz)
2nd Harmonic Distortion vs. Frequency
-25
-35
100MHz
-45
50MHz
20MHz
-55
10MHz
-65
-75
4
8
12
16
20
24
Output Power (dB)
2nd Harmonic Distortion Driving CL
-30
Compensation as shown in
Frequency Response plot
-40
-50
CL = 20pF
-60
-70
-80
10
CL = 50pF
CL = 100pF
20
30 40 50
Frequency (MHz)
Av = +5
Ro = 25
Vo = 2Vpp
70 100
4
Frequency Response vs. Output Power
16
Po = 10dBm
14
Vo = 2Vpp
12
Po = 24dBm
Vo = 10Vpp
10
Po = 27.5dBm
Vo = 15Vpp
8
Po = 18dBm
Vo = 5Vpp
6
0
40
80
120
160
200
Frequency (MHz)
Frequency Response vs. Ro
Pi = -4dBm
Ro = 25Ω
Ro = 75Ω
Ro = 100Ω
Ro = 50Ω
Response measured with matched load
Re-compensated at each Ro
0
50
100
150
200
250
Frequency (MHz)
Internal Current Gain and Phase
Gain
30
20
Phase
10
0
-10
-20
-30
Phase consistant with current
polarity connection of Figure 3
Cx = 0
RL = 0
180
90
0
-90
-180
0
100
200
300
400
500
Frequency (MHz)
3rd Harmonic Distortion vs. Frequency
-25
50MHz
-35
100MHz
-45
-55
20MHz
-65
10MHz
-75
4
8
12
16
20
24
Output Power (dB)
3rd Harmonic Distortion Driving CL
-30
Av = +5
Ro = 25
-40
Vo = 2Vpp
-50
-60
CL = 100pF
CL = 50pF
-70
CL = 20pF
-80
10
20
30 40 50 70
Frequency (MHz)
100
SPT561
10/9/98
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