DATA SHEET
KH561
KH561 Typical Performance Characteristics
(T
A
= +25°C, Circuit in Figure 1; unless specified)
Small Signal Gain and Phase
Normalized Magnitude (1dB/div)
16
P
o
= 10dBm
Frequency Response vs. Gain
A
v
= 10
P
o
= 10dBm
Frequency Response vs. Output Power
16
14
A
v
= 5
P
o
= 10dBm
V
o
= 2V
pp
14
Maximally Flat
0% Overshoot
Phase (degrees)
Gain (dB)
Gain (dB)
12
0
10
8
6
0
50
100
150
200
250
Phase
Gain
12
10
8
P
o
= 24dBm
V
o
= 10V
pp
P
o
= 27.5dBm
V
o
= 15V
pp
P
o
= 18dBm
V
o
= 5V
pp
-90
-180
-270
-360
A
v
= 15
Re-compensated at
each gain (see text)
A
v
= 20
6
0
50
100
150
200
250
0
40
80
120
160
200
Frequency (MHz)
Frequency Response vs. R
L
Normalized Magnitude (1dB/div)
Frequency (MHz)
Frequency (MHz)
Frequency Response vs. R
o
Normalized Magnitude (1dB/div)
5
P
i
= -4dBm
Frequency Response vs. Power Supply
5
16
14
P
o
= 10dBm
5
P
i
= -4dBm
R
L
= 25Ω
±V
CC
= 18
Gain (dB)
R
L
= 50Ω
12
±V
CC
= 15
R
o
= 25Ω
R
o
= 75Ω
R
o
= 100Ω
R
o
= 50Ω
R
L
= 75Ω
10
8
Re-compensated at
each supply voltage
±V
CC
= 12
±V
CC
= 10
R
L
= 100Ω
Fixed gain and
compensated vs. load
Response measured with matched load
Re-compensated at each R
o
6
0
50
100
150
200
250
0
50
100
150
200
250
0
50
100
150
200
250
Frequency (MHz)
Frequency Response vs. Gain (R
o,
R
L
=
5
75Ω)
Normalized Magnitude (1dB/div)
V
o
= 2V
pp
Gain
Frequency (MHz)
Gain Flatness/Deviation from Linear Phase
5
P
o
= 10dBm
Frequency (MHz)
Internal Current Gain and Phase
5
C
x
= 0
R
L
= 0
Gain (0.1dB/div)
Gain (10dB/div)
Gain
Phase (0.5°/div)
Phase (90°/div)
A
v
= 5
A
v
= 10
A
v
= 15
A
v
= 20
30
20
10
0
-10
-20
-30
Phase consistant with current
polarity connection of Figure 3
Phase
180
90
0
-90
-180
Phase
Re-compensated
at each gain
0
50
100
150
200
250
0
20
40
60
80
100
0
100
200
300
400
500
Frequency (MHz)
Two Tone, 3rd-Order Intermodulation
5
45
40
35
30
25
Re-compensated
at each gain
A
v
= 15
A
v
= 20
A
v
= 5
Frequency (MHz)
2nd Harmonic Distortion vs. Frequency
5
-25
-35
100MHz
Frequency (MHz)
3rd Harmonic Distortion vs. Frequency
5
-25
50MHz
Intercept (2.5dB/div)
-35
Distortion (dBc)
Distortion (dBc)
A
v
= 10
100MHz
-45
50MHz
-45
-55
-65
-75
10MHz
-55
-65
-75
20MHz
20MHz
10MHz
20
0
20
40
60
80
100
4
8
12
16
20
24
4
8
12
16
20
24
Frequency (MHz)
Frequency Response Driving C
L
5
A
v
= +5
R
o
= 25
V
o
= 2V
pp
Output Power (dB)
-30
-40
-50
-60
-70
C
L
= 100pF
C
L
= 20pF
Output Power (dB)
-30
-40
-50
-60
-70
-80
10
20
30
40
50
70
100
2nd Harmonic Distortion Driving C
5
L
Compensation as shown in
Frequency Response plot
3rd Harmonic Distortion Driving C
L
5
A
v
= +5
R
o
= 25
V
o
= 2V
pp
C
L
= 20pF
C
L
= 100pF
Distortion (5dBc/div)
Distortion (5dBc/div)
Gain (1dB/div)
C
L
= 50pF
A
v
= +5
R
o
= 25
V
o
= 2V
pp
C
L
= 100pF
C
L
= 20pF
C
L
= 50pF
C
L
= 50pF
Re-compensated
at each
C
L
-80
0
50
100
150
200
250
10
20
30
40
50
70
100
Frequency (MHz)
Frequency (MHz)
Frequency (MHz)
5
5
5
REV. 1A January 2004
4
CADEKA [ CADEKA MICROCIRCUITS LLC. ]
