2nd and 3rd Harmonic Distortion
Distortion (dBc)
-30
-40
-50
-60
-100
Frequency (MHz)
0
100
200
300
50
150
250
-70
-80
-90
V
o
= 2V
pp
3rd
2nd
Features
DC - 1GHz bandwidth
Fixed 14dB (5V/V) gain
100
(differential) inputs and outputs
-74/-64dBc 2nd/3rd HD at 50MHz
45mA output current
9V
pp
into 100
differential load
13,000V/
s slew rate
Optional supply current and offset voltage adjustment
Applications
ATE systems
High-end instrumentation
High bandwidth output amplifier
Differential buffer
Line driver
Description
The KH600 is the first amplifier to combine differential input
and output with a bandwidth of DC-1GHz at 2V
pp
. The
inputs and outputs are 100
differential (50 single ended).
The KH600 operates from 5V supplies and offers a fixed
gain of 14dB (5V/V).
The KH600 also offers optional supply current, differential
output offset voltage, and common mode offset voltage
adjustments.
The KH600 is constructed using Fairchild's in-house thin film
resistor/bipolar transistor technology. The KH600 is available
in a 12-pin TO8 package.
KH600
1GHz, Differential Input/Output Amplifier
www.fairchildsemi.com
5V
pp
Pulse Response
Output voltage (V)
Time (2ns/div)
3
2
1
-3
0
-1
-2
Single Tone Intercept Point
Distortion (dBm)
100
90
80
70
60
20
Frequency (MHz)
0
100
200
350
50
150
250
50
I2
I3
40
30
300
Typical Application
Differential
100
Source
+
-
50
50
The KH600 includes 50
resistors from each
input to ground (resulting in a differential input
impedance of 100
).
REV. 2 January 2002
DATA SHEET
KH600
2
REV. 2 January 2002
Absolute Maximum Ratings
Parameter
Min.
Max.
Unit
Total Supply Voltage
15
V
Maximum Junction Temperature
+150
C
Storage Temperature Range
-65
+150
C
Lead Temperature, 10 seconds
+300
C
Pin Definitions
Pin Number
Pin Name
Pin Function Description
6, 10
+V
s
Positive supply voltage
8
-V
s
Negative supply voltage
11
+V
b1
Positive bias voltage for OUT1
5
+V
b2
Positive bias voltage for OUT2
2
-V
b
Negative bias voltage for OUT1 and OUT2
1
IN1
Input 1, +IN
3
IN2
Input 2, -IN
9
OUT1
Output 1, +OUT
7
OUT2
Output 2, -OUT
4, 12
GND
Input termination ground and case
6
5
4
3
2
1
12
11
10
9
8
7
GND
GND
+V
b1
+V
s
+V
s
+V
b2
-V
s
-V
b
-In
+In
+OUT
-OUT
TOP VIEW
12-pin TO8
NOTE: Case is grounded.
Pin Assignments
KH600
DATA SHEET
REV. 2 January 2002
3
Electrical Specifications
(G = +5V/V (14dB), R
L
= 100
(differential), T
a
= +25C, +V
b1
= +V
b2
= +V
s
= +5V, -V
b
= -V
s
= -5V; unless noted)
Parameter
Conditions
Min.
Typ.
Max.
Unit
Frequency Domain Response
-3dB Bandwidth
V
o
= 2V
pp
1000
MHz
Peaking
DC to 250MHz
0.2
dB
DC to 500MHz
0.5
dB
Full Power Bandwidth
V
o
= 8V
pp
350 MHz
Linear Phase Deviation
DC to 500MHz
3
deg
Gain
1MHz
14
dB
DC
1
14.2
14.3
14.4
dB
Input Return Loss (SE 50
)
2
DC = 250MHz
22
dB
DC = 500MHz
14
dB
Output Return Loss (SE 50
)
2
DC = 500MHz
27
dB
Time Domain Response
Rise and Fall Time
2V step
350
ps
8V step
1
ns
Overload Recovery V
in
= 4V
pp
900
ps
Slew Rate
8V step
13,000
V/
s
Distortion and Noise Response
2nd Harmonic Distortion
5V
pp
, 50MHz
61
dBc
2V
pp
, 50MHz
1
61
74 dBc
1V
pp
, 200MHz
65
dBc
3rd Harmonic Distortion
5V
pp
, 50MHz
46
dBc
2V
pp
, 50MHz
1
57
64 dBc
1V
pp
, 200MHz
70
dBc
Input Referred Noise >1MHz
1.35
nV/
Hz
Noise Figure
6.5
dB
DC Performance
Output Offset Voltage
I/Os terminated 50
to GND
1
-60
-18
+60
mV
Average Drift
200
V/C
Power Supply Rejection Ratio (V
s
)
DC
55
dB
Supply Current
V
s
pins
1
67
70
mA
V
b
pins 22
24
mA
(+V
b1
shorted to +V
b2
)
1
Output Characteristics
Output Voltage Swing
differential
9
V
pp
Output Current
45
mA
Recommended Operating
Conditions
Total Supply Voltage
(+V
s
to -V
s
)
4 to 12
V
-
V
b
0 to -12
V
+
V
b1
, +V
b2
0 to -12
V
Input Voltage (Relative to Gain)
2
V
Min/max ratings are based on product characterization and simulation. Individual parameters are tested as noted. Outgoing quality levels are
determined from tested parameters.
Notes:
1. 100% tested at 25C.
2. SE = Single-Ended.
DATA SHEET
KH600
4
REV. 2 January 2002
Small Signal AC Response (S
21
)
Magnitude (1dB/div)
Frequency (MHz)
1
10
100
1000
Input and Output Return Loss (S
11
/S
22
)
Magnitude (dB)
Frequency (MHz)
1
10
100
1000
0
-6
-12
-18
-24
-30
-36
-42
-48
-54
-60
-66
S
11
Ch1
S
22
Ch2
Reverse Isolation (S
12
)
Magnitude (dB)
Frequency (MHz)
1
10
100
1000
-10
-16
-22
-28
-34
-40
-46
-52
-58
Linear Phase Deviation
Linear Phase Deviation (deg)
Frequency (MHz)
1
100
200
300
5
4
3
2
1
0
-1
400
500
Input Noise
Input Refered Noise (nV
Hz)
1.5
1.4
1.3
1.2
1.1
1.0
Frequency (MHz)
1
10
100
1000
Differential Gain vs. Supply Voltage
Differential Gain (V/V)
6
5
4
3
2
0
Supply Voltage (
V)
1
3
5
7
2
4
6
1
V
b
=
V
s
2 Tone 3rd Order Intermod. Distortion
IMD (dBc)
20
-100
-80
-60
-40
-20
0
Frequency (MHz)
49.45
49.65
49.85
50.05
50.25
50.45
V
o
= 1V
pp
2 Tone 3rd Order Intermod. Distortion
IMD (dBc)
20
-100
-80
-60
-40
-20
0
Frequency (MHz)
99.45
99.65
99.85
100.05
100.25
100.45
V
o
= 1V
pp
Typical Operating Characteristics
(G = +5V/V (14dB), R
L
= 100
(differential), T
a
= +25C, +V
b1
= +V
b2
= +V
s
= +5V, -V
b
= -V
s
= -5V; unless noted)
KH600
DATA SHEET
REV. 2 January 2002
5
2 Tone 3rd Order Intermod. Distortion
IMD (dBc)
20
-100
-80
-60
-40
-20
0
Frequency (MHz)
49.45
49.65
49.85
50.05
50.25
50.45
V
o
= 5V
pp
2 Tone 3rd Order Intermod. Distortion
IMD (dBc)
20
-100
-80
-60
-40
-20
0
Frequency (MHz)
99.45
99.65
99.85
100.05
100.25
100.45
V
o
= 5V
pp
2nd Harmonic Distortion vs. V
o
Distortion (dBc)
-30
-40
-50
-60
-100
Frequency (MHz)
0
100
200
300
50
150
250
-70
-80
-90
V
o
= 5V
pp
V
o
= 2V
pp
V
o
= 1V
pp
V
o
= 0.5V
pp
3rd Harmonic Distortion vs. V
o
Distortion (dBc)
-30
-40
-50
-60
-70
-100
Frequency (MHz)
0
100
200
300
50
150
250
-80
V
o
= 5V
pp
V
o
= 2V
pp
V
o
= 1V
pp
V
o
= 0.5V
pp
-90
Single Tone Intercept Point
Distortion (dBm)
100
90
80
70
60
20
Frequency (MHz)
0
100
200
350
50
150
250
50
I2
I3
40
30
300
-1dB Compression
Power Output (dBm)
24
23
22
21
20
16
Frequency (MHz)
0
100
300
500
200
400
19
18
17
V
s
Supply Currents vs. Temperature
Supply Current (mA)
72
70
68
66
58
Temperature (
C)
-40
-20
20
80
0
60
64
62
60
40
+V
s
-V
s
V
b
Supply Currents vs. Temperature
Supply Current (mA)
24
21
20
18
Temperature (
C)
-40
-20
20
80
0
60
19
40
-V
b
+V
b1
shorted to +V
b2
23
22
Typical Operating Characteristics
(G = +5V/V (14dB), R
L
= 100
(differential), T
a
= +25C, +V
b1
= +V
b2
= +V
s
= +5V, -V
b
= -V
s
= -5V; unless noted)
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