www.fairchildsemi.com
KH560
Wideband, Low Distortion Driver Amplifier
Features
s
s
s
s
s
s
General Description
The KH560 is a wideband DC coupled, amplifier that
combines high output drive and low distortion. At
an output of +24dBm (10V
pp
into 50Ω), the -3dB
bandwidth is 120MHz. As illustrated in the table
below, distortion performance remains excellent
even when amplifying high-frequency signals to high
output power levels.
With the output current internally limited to 250mA,
the KH560 is fully protected against shorts to ground
and can, with the addition of a series limiting resistor
at the output, withstand shorts to the ±15V supplies.
The KH560 has been designed for maximum flexibility
in a wide variety of demanding applications. The
two resistors comprising the feedback network set
both the gain and the output impedance, without
requiring the series backmatch resistor needed by
most op amps. This allows driving into a matched
load without dropping half the voltage swing
through a series matching resistor. External compen-
sation allows user adjustment of the frequency
response. The KH560 is specified for both maximally
flat frequency response and 0% pulse overshoot
compensations.
The combination of wide bandwidth, high output
power, and low distortion, coupled with gain, output
impedance and frequency response flexibility, makes
the KH560 ideal for waveform generator applications.
Excellent stability driving capacitive loads yields
superior performance driving ADC’s, long transmission
lines, and SAW devices. A companion part, the
KH561, offers higher full power bandwidth for
broadband sinusoidal applications.
The KH560 is constructed using thin film resistor/bipolar
transistor technology, and is available in the following
versions:
KH560AI
KH560AK
-25°C to +85°C
-55°C to +125°C
24-pin Ceramic DIP
24-pin Ceramic DIP,
features burn-in
and hermetic testing
24-pin Ceramic DIP,
environmentally screened
and electronically tested
to MIL-STD-883
120MHz bandwidth at +24dBm output
Low distortion
(2nd/3rd: -60/-62dBc @ 20MHz and 10dBm)
Output short circuit protection
User-definable output impedance, gain,
and compensation
Internal current limiting
Direct replacement for CLC560
Applications
s
s
s
s
s
s
s
Output amplification
Arbitrary waveform generation
ATE systems
Cable/line driving
Function generators
SAW drivers
Flash A/D driving and testing
Large Signal Pulse Response
A
v
= +20
Output Voltage (2V/div)
A
v
= -20
Time (5ns/div)
4
+V
CC
Compensation
V
o
V+
8
+
-
19
23
V-
18
5
21
10
15
20
-V
CC
All undesignated
pins are internally
unconnected. May
be grounded if
desired.
Typical Distortion Performance
Output
Power
10dBm
18dBm
24dBm
20MHz
2nd
3rd
-60
-51
-46
-62
-48
-38
50MHz
2nd
3rd
-50
-40
-33
-54
-40
-25
100MHz
2nd
3rd
-54
-36
-44
-29
KH560AM
-55°C to +125°C
REV. 1A February 2001
DATA SHEET
KH560
KH560 Electrical Characteristics
(A
v
= +10V, V
CC
= ±15V, R
L
= 50Ω, R
f
= 410Ω, R
g
= 40Ω, R
o
= 50Ω; unless specified)
NOTES TO THE ELECTRICAL SPECIFICATIONS
The electrical characteristics shown here apply to the specific test conditions shown above (see also Figure 1 in
description of the operation). The KH560 provides an equivalent, non-zero, output impedance determined by the
external resistors. The signal gain to the load is therefore load dependent.
The signal gain shown above (A
v
=
+10) is the no load gain.
The actual gain to the matching 50Ω load used in these specifications is half of this (+5).
The KH560 requires an external compensation capacitor. Unless otherwise noted, this has been set to 10.5pF for
the frequency domain specifications (yielding a maximally flat frequency response) and 12.5pF for the time domain
specifications (yielding a 0% small signal pulse overshoot response).
PARAMETERS
Case Temperature
Case Temperature
CONDITIONS
KH560AI
KH560AK/AM
TYP
+25°C
+25°C
MIN & MAX RATINGS
-25°C
-55°C
+25°C
+25°C
+85°C
+125°C
UNITS
SYM
FREQUENCY DOMAIN RESPONSE
(Max. Flat Compensation)
✝
-3dB bandwidth
✝
maximally flat compensation
V
o
<2V
pp
(+10dBm)
0% overshoot compensation
V
o
<2V
pp
(+10dBm)
large signal bandwidth
Vo <10V
pp
(+24dBm)
(see Frequency Response vs. Output Power plot)
gain flatness
V
o
<2V
pp
(+10dBm)
✝
peaking
0.1 -50MHz
✝
peaking
>50MHz
✝
rolloff
at 100MHz
group delay
to 100MHz
linear phase deviation
to 100MHz
return loss
(see discussion of R
x
)
to 100MHz
DISTORTION
(Max. Flat Compensation)
2nd harmonic distortion
✝
24dBm (10V
pp
):
20MHz
✝
50MHz
✝
18dBm (5V
pp
):
20MHz
✝
50MHz
100MHz
✝
10dBm (2V
pp
):
20MHz
✝
50MHz
100MHz
3rd harmonic distortion
✝
24dBm (10V
pp
):
20MHz
✝
50MHz
✝
18dBm (5V
pp
):
20MHz
✝
50MHz
100MHz
✝
✝
215
210
120
0
0
0.1
3.1
0.6
-15
>175
>170
>115
<0.50
<1.25
<1.00
–
<1.7
<-12
>185
>180
>100
<0.40
<0.75
<0.75
–
<1.2
<-12
>175
>170
>90
<0.50
<1.00
<1.00
–
<2.7
<-12
MHz
MHz
MHz
dB
dB
dB
ns
°
dB
SSBW
FPBW
GFPL
GFPH
GFR
GD
LPD
RL
-46
-33
-51
-40
-36
-60
-50
-54
-38
-25
-48
-40
-29
-62
-54
-44
40
35
25
<-36
<-27
<-44
<-35
<-25
<-54
<-43
<-32
<-32
<-21
<-42
<-36
<-25
<-58
<-50
<-40
>38
>32
>23
<-36
<-27
<-44
<-35
<-28
<-54
<-43
<-32
<-32
<-21
<-45
<-36
<-25
<-58
<-50
<-40
>38
>32
>23
<-33
<-27
<-42
<-30
<-26
<-50
<-40
<-32
<-25
<-20
<-42
<-30
<-25
<-57
<-48
<-36
>38
>32
>20
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBm
dBm
dBm
HD2HL
HD2HM
HD2ML
HD2MM
HD2MH
HD2LL
HD2LM
HD2LH
HD3HL
HD3HM
HD3ML
HD3MM
HD3MH
HD3LL
HD3LM
HD3LH
IM3L
IM3M
IM3H
10dBm (2V
pp
):
2-tone 3rd order
intermod intercept
2
20MHz
50MHz
100MHz
20MHz
50MHz
100MHZ
Min/max ratings are based on product characterization and simulation. Individual parameters are tested as noted. Outgoing quality levels are
determined from tested parameters.
2
REV. 1A February 2001
KH560
DATA SHEET
KH560 Electrical Characteristics
(A
v
= +10V, V
CC
= ±15V, R
L
= 50Ω, R
f
= 410Ω, R
g
= 40Ω, R
o
= 50Ω; unless specified)
PARAMETERS
Case Temperature
Case Temperature
CONDITIONS
KH560AI
KH560AK/AM
TYP
+25°C
+25°C
MIN & MAX RATINGS
-25°C
-55°C
+25°C
+25°C
+85°C
+125°C
UNITS
SYM
TIME DOMAIN RESPONSE
(0% Overshoot Compensation)
rise and fall time
2V step
10V step
settling time to 0.1% (time <1µs)
5V step
long term thermal tail (time >1µs)
5V step
slew rate
10V
pp
, 175MHz
overshoot
2V step
maximally flat compensation
0% overshoot compensation
EQUIVALENT INPUT NOISE
voltage
inverting current
non-inverting current
noise floor
3
integrated noise
3
noise figure
STATIC, DC PERFORMANCE
* input offset voltage
average temperature coefficient
* non-inverting bias current
average temperature coefficient
* inverting bias current
average temperature coefficient
* power supply rejection ratio (DC)
* supply current
MISCELLANEOUS PERFORMANCE
open loop current gain
average temperature coefficient
inverting input resistance
average temperature coefficient
non-inverting input resistance
non-inverting input capacitance
output voltage range
output current limit
>100KHz
>100KHz
>100KHz
>100KHz
1kHz to 200MHz
>100KHz
1.6
3.6
10
0.4
2600
5
0
2.1
34
2.8
-159
35
15
2.0
35
5.0
20
10.0
100
60
50
10.0
+0.02
14.0
+.02
700
2.3
±10.5
210
<2.0
<3.8
<15
<0.5
>2300
<13
<5
<2.5
<40
<4.5
<-157
<45
<17
<14.0
<100
<35
<175
<50
<200
>58
<60
–
<+.03
–
<+.025
>200
<3.0
>10.0
<250
<1.9
<4.5
<15
<0.5
>2000
<10
<3
<2.5
<40
<4.5
<-157
<45
<17
<5.0
–
<20
–
<30
–
>58
<60
–
–
–
–
>400
<3.0
>10.0
<250
<2.0
<5.3
<25
<0.5
>1800
<13
<5
<2.5
<45
<5.0
<-157
<45
<17
<15.0
<100
<20
<100
<50
<200
>57
<65
–
<+.02
–
<+.025
>400
<3.0
>10.0
<250
ns
ns
ns
%
V/µs
%
%
nV/√Hz
pA/√Hz
pA/√Hz
dBm/(1Hz)
TRS
TRL
TS
SE
SR
OSMF
OSZO
VN
ICN
NCN
SNF
INV
NF
VIO
DVIO
IBN
DIBN
IBI
DIBI
PSRR
ICC
G
DG
RIN
DRIN
RNI
CNI
VO
OCL
µV
dB
no load
(±1% tolerance)
(±5% tolerance)
to 100MHz
150mA load current
mV
µV/°C
µA
nA/°C
µA
nA/°C
dB
mA
mA/mA
%/°C
Ω
Ω/°C
KΩ
pF
V
mA
Min/max ratings are based on product characterization and simulation. Individual parameters are tested as noted. Outgoing quality levels are
determined from tested parameters.
Absolute Maximum Ratings
V
CC
(reversed supplies will destroy part)
differential input voltage
common mode input voltage
junction temperature (see thermal model)
storage temperature
lead temperature (soldering 10s)
output current (internally limited)
±20V
±3V
±V
CC
+175°C
-65°C to +150°C
+300°C
±250mA
Recommended Operating Conditions
V
CC
I
o
common mode input voltage
output impedance
gain range (no-load voltage gain)
case temperature: AI
AK/AM
±10V to ±15V
≤
±200mA
< ±(|V
CC
| -6)V
25Ω to 200Ω
+5 to +80
-25°C to +85°C
-55°C to +125°C
Notes
1) * AI/AK/AM 100% tested at +25°C
✝
AK/AM
100% tested at at +25°C and sample tested at -55°C and +125°C
✝
AI
sample tested at +25°C
2) Test Tones are set ±100kHz of indicated frequency.
3) Noise tests are perfomed from 5MHz to 200MHz.
REV. 1A February 2001
3
DATA SHEET
KH560
KH560 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
P
o
= 10dBm
A
v
= 10
A
v
= 5
Frequency Response vs. Output Power
16
P
o
= 18dBm
V
o
= 5V
pp
14
Maximally Flat
0% Overshoot
14
P
o
= 10dBm
V
o
= 2V
pp
Phase (degrees)
Gain (dB)
12
0
10
Phase
Gain
Gain (dB)
12
10
8
P
o
= 27.5dBm
V
o
= 15V
pp
-90
-180
-270
-360
A
v
= 15
8
6
0
50
100
150
200
250
P
o
= 24dBm
V
o
= 10V
pp
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)
P
i
= -4dBm
R
L
= 50Ω
Frequency (MHz)
Frequency Response vs. Power Supply
P
o
= 10dBm
Frequency (MHz)
Frequency Response vs. R
o
Normalized Magnitude (1dB/div)
P
i
= -4dBm
16
14
±V
CC
= 18
Gain (dB)
R
L
= 25Ω
R
L
= 75Ω
12
±V
CC
= 15
R
o
= 25Ω
R
o
= 75Ω
R
o
= 100Ω
R
o
= 50Ω
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
= 75Ω)
Normalized Magnitude (1dB/div)
V
o
= 2V
pp
Gain
Frequency (MHz)
Gain Flatness/Deviation from Linear Phase
P
o
= 10dBm
Frequency (MHz)
Internal Current Gain and Phase
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
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
-25
100MHz
Frequency (MHz)
3rd Harmonic Distortion vs. Frequency
-25
-35
100MHz
50MHz
Intercept (2.5dB/div)
Distortion (dBc)
-45
-55
-65
-75
Distortion (dBc)
A
v
= 10
-35
50MHz
20MHz
-45
-55
-65
-75
20MHz
10MHz
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
-30
A
v
= +5
R
o
= 25
V
o
= 2V
pp
Output Power (dB)
2nd Harmonic Distortion Driving C
L
-30
Compensation as shown in
Frequency Response plot
A
v
= +5
R
o
= 25
V
o
= 2V
pp
C
L
= 20pF
Output Power (dB)
3rd Harmonic Distortion Driving C
L
A
v
= +5
R
o
= 25
V
o
= 2V
pp
C
L
= 20pF
C
L
= 20pF
Distortion (5dBc/div)
Distortion (5dBc/div)
-40
-50
-60
-70
-80
C
L
= 50pF
-40
-50
-60
-70
-80
Gain (1dB/div)
C
L
= 100pF
C
L
= 100pF
C
L
= 100pF
C
L
= 50pF
C
L
= 50pF
Re-compensated
at each
C
L
0
50
100
150
200
250
10
20
30
40
50
70
100
10
20
30
40
50
70
100
Frequency (MHz)
Frequency (MHz)
Frequency (MHz)
4
REV. 1A February 2001
KH560
DATA SHEET
KH560 Typical Performance Characteristics
(T
A
= +25°C, Circuit in Figure 1; unless specified)
Small Signal Pulse Response
1.2
Maximally Flat
Compensation
Large Signal Pulse Response
6
Maximally Flat
Compensation
Uni-Polar Pulse Response
6
Maximally Flat
Compensation
Output Voltage (V)
Output Voltage (V)
0.8
0.4
0
-0.4
-0.8
-1.2
0% Overshoot
Compensation
4
2
0
-2
-4
-6
Output Voltage (V)
0% Overshoot
Compensation
4
2
0
-2
-4
-6
Time (2ns/div)
Time (5ns/div)
Time (5ns/div)
Settling Time into 50Ω Load
0.8
5V Output Step
Settling Time into 500Ω Load
0.8
5V Output Step
Reverse Transmission Gain & Phase (S
12
)
0
-20
0.6
0.6
Reverse Phase (degrees)
Settling Error (%)
Settling Error (%)
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
10
-9
10
-7
10
-5
10
-3
10
-1
10
1
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
10
-9
10
-7
10
-5
10
-3
10
-1
10
1
Reverse Gain (dB)
-40
-60
-80
-100
Phase
Gain
0
-45
-90
-135
-180
0
50
100
150
200
250
Time (sec)
Settling Time into 50pF Load
0.8
5V Output Step
Time (sec)
Output Return Loss (S
22
)
0
-5
-10
R
o
= 50Ω
R
x
= 0Ω
Frequency (MHz)
Input Return Loss (S
11
)
0
-10
-20
0.6
Settling Error (%)
Magnitude (dB)
Magnitude (dB)
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
10
-9
10
-7
10
-5
10
-3
10
-1
10
1
Phase (degrees)
-15
-20
-25
-30
-35
-40
-45
-50
0
50
100
150
200
250
Re-compensated
at each R
x
R
o
= 40Ω
R
x
= 10Ω
-30
-40
-50
Magnitude
0
Phase
-45
-90
-135
Re-compensated
at each R
x
-180
100
150
200
250
0
50
Time (sec)
-1dB Compensation Point
32
20
19
Frequency (MHz)
Noise Figure
100
60
Frequency (MHz)
Equivalent Input Noise
100
60
-1dB Compensation (dBm)
31
Noise Voltage (nV/√Hz)
Noise Current (pA/√Hz)
Noise Figure (dBm)
30
29
28
27
26
25
24
23
22
0
20
R
o
= 50Ω
R
o
= 75Ω
18
17
16
15
14
13
12
11
10
R
o
= 25Ω
R
o
= 100Ω
R
o
= 75Ω
R
o
= 50Ω
40
20
10
6
4
2
Inverting Current 34pA/√Hz
40
20
10
Non-Inverting Current 2.8pA/√Hz
6
4
2
Match Load
Re-compensated at each load
Non-inverting input impedance
matched to source impedance
Non-Inverting Voltage 2.1nV/√Hz
1
5
10
15
20
25
30
100
1k
10k
100k
1M
10M
40
60
80
100
1
100M
Frequency (MHz)
Group Delay
4.0
3.8
5
4
No Load Gain
Gain Error Band (Worst Case, DC)
100
R
o
(nominal) = 50Ω
R
L
= 50Ω
±
0%
Frequency (Hz)
PSRR
90
80
70
60
50
40
30
20
Gain Error at Load (%)
3.6
3
2
1
0
-1
-2
-3
-4
-5
R
f
and R
g
tolerance =
±1%
R
f
and R
g
tolerance =
±0.1%
Group Delay (ns)
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
0
50
100
150
200
250
Aperture set to 5%
of span (12.8MHz)
PSRR (dB)
17
21
25
10
0
100
1k
10k
100k
1M
10M
100M
5
9
13
Frequency (MHz)
No Load Gain
Frequency (Hz)
REV. 1A February 2001
5
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