TL K 5507
LH0033LH0063
Fast
and
Ultra
Fast
Buffers
December 1994
LH0033 LH0063
Fast and Ultra Fast Buffers
General Description
The LH0033 and LH0063 are high speed FET input voltage
follower buffers designed to provide high current drive at
frequencies from DC to over 100 MHz The LH0033 will
provide
g
10 mA into 1 kX loads (
g
100 mA peak) at slew
rates of 1500V ms The LH0063 will provide
g
250 mA into
50X loads (
g
500 mA peak) at slew rates up to 6000V ms
In addition both exhibit excellent phase linearity up to
20 MHz
Both are intended to fulfill a wide range of buffer applica-
tions such as high speed line drivers video impedance
transformation nuclear instrumentation amplifiers op amp
isolation buffers for driving reactive loads and high imped-
ance input buffers for high speed A to Ds and comparators
In addition the LH0063 can continuously drive 50X coaxial
cables or be used as a yoke driver for high resolution CRT
displays For additional applications information see AN-48
These devices are constructed using specially selected
junction FETs and active laser trimming to achieve guaran-
teed performance specifications The LH0033 is specified
for operation from
b
55 C to
a
125 C the LH0033C and the
LH0063C are specified from
b
25 C to
a
85 C The LH0033
is available in either a 1 5W metal TO-8 package or an 8-pin
ceramic dual-in-line package The LH0063 is available in a
5W 8-pin TO-3 package
Features
Y
Ultra fast (LH0063) 6000 V ms
Y
Wide range single or dual supply operation
Y
Wide power bandwidth DC to 100 MHz
Y
High output drive
g
10V with 50X load
Y
Low phase non-linearity 2 degrees
Y
Fast rise times 2 ns
Y
High input resistance 10
10
X
Advantages
Y
Only 10V supply needed for 5 Vp-p video out
Y
Speed does not degrade system performance
Y
Wide data rate range for phase encoded systems
Connection Diagrams
LH0033G
Metal Can Package
TL K 5507 1
Case is electrically isolated
Order Number LH0033G LH0033G-MIL
or LH0033CG
See NS Package Number G12B
LH0033J
Dual-In-Line Package
TL K 5507 2
Order Number LH0033J or LH0033CJ
See NS Package Number HY08A
LH0063K
Metal Can Package
TL K 5507 3
Top View
Case is electrically isolated
Order Number LH0063CK
See NS Package Number K08A
Teflon
TM
is a trademark of E I DuPont Corporation
C1996 National Semiconductor Corporation
RRD-B30M26 Printed in U S A
Absolute Maximum Ratings
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Supply Voltage (V
a
V
b
)
40V
Power Dissipation (See Curves)
LH0063C
5W
LH0033 LH0033C
2 2W
Junction Temperature
175 C
Input Voltage
g
V
S
Continuous Output Current
LH0063C
g
250 mA
LH0033 LH0033C
g
100 mA
Peak Output Current
LH0063C
g
500 mA
LH0033 LH0033C
g
250 mA
Lead Temp (Soldering 10 seconds)
300 C
Operating Temperature Range
LH0033
b
55 C to
a
125 C
LH0033C and LH0063C
b
25 C to
a
85 C
Storage Temperature Range
b
65 to
a
150 C
ESD rating to be determined
DC Electrical Characteristics
V
S
e
g
15V T
MIN
s
T
A
s
T
MAX
unless otherwise specified (Note 1)
Parameter
Conditions
LH0033
LH0033C
Units
Min
Typ
Max
Min
Typ
Max
Output Offset
R
S
e
100X T
J
e
25 C
5 0
10
12
20
mV
Voltage
V
IN
e
0V (Note 2)
R
S
e
100X
15
25
mV
Average
R
S
e
100X V
IN
e
0V
50
100
50
100
m
V C
Temperature
(Note 3)
Coefficient of
Offset Voltage
Input Bias
V
IN
e
0V
Current
T
J
e
25 C (Note 2)
250
500
pA
T
A
e
25 C (Note 4)
2 5
5 0
nA
T
J
e
T
A
e
T
MAX
10
20
nA
Voltage Gain
V
O
e
g
10V
0 97
0 98
1 00
0 96
0 98
1 00
V V
R
S
e
100X
R
L
e
1 0kX
Input
R
L
e
1 kX
10
10
10
11
10
10
10
11
X
Impedance
Output
V
IN
e
g
1 0V
6 0
10
6 0
10
X
Impedance
R
L
e
1 0k
Output
V
I
e
g
14V R
L
e
1 0k
g
12
g
12
V
Voltage Swing
V
I
e
g
10 5V
R
L
e
100X T
A
e
25 C
g
9 0
g
9 0
V
Supply Current
V
IN
e
0V (Note 5)
20
22
21
24
mA
Power Consumption
V
IN
e
0V
600
660
630
720
mW
AC Electrical Characteristics
T
J
e
25 C V
S
e
g
15V R
S
e
50X R
L
e
1 0 KX (Note 6)
Parameter
Conditions
LH0033
LH0033C
Units
Min
Typ
Max
Min
Typ
Max
Slew Rate
V
IN
e
g
10V
1000
1500
1000
1400
V ms
Bandwidth
V
IN
e
1 0 Vrms
100
100
MHz
Phase Non-Linearity
BW
e
1 0Hz to 20 MHz
2 0
2 0
degrees
Rise Time
D
V
IN
e
0 5V
2 9
3 2
ns
Propagation Delay
D
V
IN
e
0 5V
1 2
1 5
ns
Harmonic Distortion
f
l
1 kHz
k
0 1
k
0 1
%
Note 1
LH0033 is 100% production tested as specified at 25 C 125 C and55 C LH0033AC C are 100% production tested at 25 C only Specifications at
temperature extremes are verified by sample testing but these limited are not used to calculate outgoing quality level
Note 2
Specification is at 25 C junction temperature due to requirements of high speed automatic testing Actual values at operating temperature will exceed the
value at T
J
e
25 C When supply voltages are
g
15V no-load operating junction temperature may rise 40-60 C above ambient and more under load conditions
Accordingly V
OS
may change one to several mV and I
B
will change significantly during warm-up Refer to I
B
vs temperature graph for expected values
Note 3
LH0033 is 100% production tested for this parameter LH0033C is sample tested only Limits are not used to calculate outgoing quality levels DV
OS
D
T is
the average value calculated from measurements at 25 C and T
MAX
Note 4
Measured in still air 7 minutes after application of power Guaranteed through correlated automatic pulse testing
Note 5
Guaranteed through correlated automatic pulse testing at T
J
e
25 C
Note 6
Not 100% production tested verified by sample testing only Limits are not used to calculate outgoing quality level
Note 7
Refer to RETS0033 for the LH0033G military specifications
2
DC Electrical Characteristics
V
S
e
g
15V T
MIN
s
T
A
s
T
MAX
unless otherwise specified (Note 1)
Parameter
Conditions
LH0063C
Units
Min
Typ
Max
Output Offset Voltage
R
S
s
100kX T
J
e
25 C R
L
e
100X (Note 2)
10
50
mV
100
mV
Average Temperature
R
S
s
100 kX
300
m
V C
Coefficient of Output
Offset Voltage
Input Bias Current
T
J
e
25 C (Note 2)
10
30
nA
100
nA
Voltage Gain
V
IN
e
g
10V R
S
s
100 kX R
L
e
1 kX
0 94
0 96
1 0
V V
Voltage Gain
V
IN
e
g
10V R
S
s
100 kX R
L
e
50X
0 91
0 93
0 98
V V
T
J
e
25 C
Input Capacitance
Case Shorted to Output
8 0
pF
Output Impedance
V
OUT
e
g
10V R
S
s
100 kX R
L
e
50X
1 0
4 0
X
Output Current Swing
V
IN
e
g
10V R
S
s
100 kX
0 2
0 25
A
Output Voltage Swing
R
L
e
50X
g
10
g
13
V
Output Voltage Swing
V
S
e
g
5 0V R
L
e
50X T
J
e
25 C
5 09
7 0
Vp-p
Supply Current
T
J
e
25 C R
L
e
%
V
S
e
g
15V
50
65
mA
Supply Current
V
S
e
g
5 0V
40
mA
Power Consumption
T
J
e
25 C R
L
e
%
V
S
e
g
15V
1 5
1 95
W
Power Consumption
V
S
e
g
5 0V
400
mW
AC Electrical Characteristics
T
J
e
25 C V
S
e
g
15V R
S
e
50X R
L
e
50X (Note 3)
Parameter
Conditions
LH0063C
Units
Min
Typ
Max
Slew Rate
R
L
e
1 0 kX V
IN
e
g
10V
6000
V ms
Slew Rate
R
L
e
50X V
IN
e
g
10V T
J
e
25 C
2000
2400
V ms
Bandwidth
V
IN
e
1 0 Vrms
200
MHz
Phase Non-Linearity
BW
e
1 0 Hz to 20 MHz
2 0
degrees
Rise Time
D
V
IN
e
0 5V
1 9
ns
Propagation Delay
D
V
IN
e
0 5V
2 1
ns
Harmonic Distortion
k
0 1
%
Note 1
LH0063C is 100% production tested at 25 C only Specifications at temperature extremes are verified by sample testing but these limits are not used to
calculate outgoing quality level
Note 2
Specification is at 25 C junction temperature due to requirements of high speed automatic testing Actual values at operating temperature will exceed the
value at T
J
e
25 C When supply voltages are
g
15V no-load operating junction temperature may rise 40-60 C above ambient and more under load conditions
Accordingly V
OS
may change one to several mV and I
B
will change significantly during warm-up Refer to I
B
vs temperature graph for expected values
Note 3
Not 100% production tested verified by sample testing only Limits are not used to calculate outgoing quality level
3
Typical Performance Characteristics
LH0033 Power Dissipation
LH0063 Power Dissipation
LH0063 DC Safe Operating
Area
LH0033 Supply Current vs
Supply Voltage
LH0063 Supply Current vs
Supply Voltage
LH0033 Output Voltage vs
Supply Voltage
LH0063 Output Voltage vs
Supply Voltage
LH0033 Negative Pulse
Response
LH0033 Positive Pulse
Response
LH0033 Frequency
Response
LH0033 Rise and Fall Time
vs Temperature
LH0063 Large Signal Pulse
Response
TL K 5507 4
4
Typical Performance Characteristics
(Continued)
LH0033 Input Bias Current
vs Temperature
LH0063 Input Current
LH0063 Frequency
Response
LH0033 Normalized Input
Bias Current During
Warm-Up
LH0063 Small Signal Rise
Time
LH0033 Input Bias Current
vs Input Voltage
Application Hints
RECOMMENDED LAYOUT PRECAUTIONS
RF video printed circuit board layout rules should be fol-
lowed when using the LH0033 and LH0063 since they will
provide power gain to frequencies over 100 MHz Ground
planes are recommended and power supplies should be de-
coupled at each device with low inductance capacitors In
addition ground plane shielding may be extended to the
metal case of the device since it is electrically isolated from
internal circuitry Alternatively the case should be connected
to the output to minimize input capacitance
OFFSET VOLTAGE ADJUSTMENT
Both the LH0033's and LH0063's offset voltages have been
actively trimmed by laser to meet guaranteed specifications
when the offset preset pin is shorted to the offset adjust pin
This pre-calibration allows the devices to be used in most
DC or AC applications without individually offset nulling
each device If offset null is desirable it is simply obtained
by leaving the offset preset pin open and connecting a trim
pot of 100X for the LH0033 or 1 kX for the LH0063 be-
tween the offset adjust pin and V
b
as illustrated in
Figures
1 and 2
FIGURE 1 Offset Zero Adjust for LH0033
(Pin numbers shown for TO-8)
FIGURE 2 Offset Zero Adjust for LH0063
TL K 5507 5
TL K 5507 6
TL K 5507 7
5
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