Wideband Video Buffer
LH4002A / LH4002 / LH4002C
FEATURES
DC to 300 MHz Bandwidth with V
S
=
5V
3000 V/
s Slew Rate into 50
APPLICATIONS
Wideband Amplifier Buffer
Wideband Line Driver
Video
Coaxial Cable Driver
GENERAL DESCRIPTION
The LH4002 family is a high speed voltage follower designed
to drive video signals from DC up to 300MHz. At voltage
supplies of
5V, the LH4002 family will provide up to 80mA
into 50
at slew rates of 2000 V/
s.
The LH4002 family is intended to fulfill a wide range of high
speed applications including video distribution, impedance
transformation, and load isolation. It is also suitable for use in
current booster applications within an op amp loop. This allows
the output current capability of existing op amps to be increased.
ORDERING INFORMATION
Part
Package Temperature
Range
LH4002AH
HO8A (TO5-8 Lead)
-55
o
C to +125
o
C
LH4002H
HO8A (TO5-8 Lead)
-55
o
C to +125
o
C
LH4002CH
HO8A (TO5-8 Lead)
-40
o
C to +85
o
C
LH4002AN
N10A (Plastic Dip-10 Lead)
-40
o
C to +85
o
C
LH4002N
N10A (Plastic Dip-10 Lead)
-40
o
C to +85
o
C
LH4002CN
N10A (Plastic Dip-10 Lead)
-40
o
C to +85
o
C
CORPORATION
7
6
5
4
3
2
1
8
HO8A
OUTPUT
INPUT
METAL CAN PACKAGE
NC
-V
CC2
-V
CC1
NC
+V
CC2
+V
CC1
1
2
3
4
5
6
7
8
9
10
OUTPUT
INPUT
DUAL-IN-LINE
PACKAGE
TOP VIEW
CC2
-V
CC1
-V
+V
CC1
+V
CC2
E
1
E
3
E
4
E
2
N10A
CONNECTION DIAGRAMS
CALOGIC CORPORATION
, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-1076
CORPORATION
DC ELECTRICAL CHARACTERISTICS
The following specifications apply for Supply Voltage =
5V, V
CM
= 0, R
L
100K
and R
S
= 50
unless otherwise noted.
Boldface limits apply for T
A
= T
J
= T
MIN
to T
MAX
; all other limits T
A
= T
J
= 25
o
C.
SYMBOL
CHARACTERISTICS
TYP
LH4002A
LH4002
LH4002C
UNITS
CONDITIONS
Limit
(Note 5)
Limit
(Note 5)
Limit
(Note 5)
A
V1
Voltage Gain 1
0.99
0.96
0.95
0.95
0.95
0.95
0.95
V/V Min
R
L
= 1K, V
IN
=
2V, R
S
= 10K
A
V2
Voltage Gain 2
0.92
0.89
0.88
0.87
R
L
= 50
, V
IN
=
3V
A
V3
Voltage Gain 3
0.92
0.89
0.87
0.87
R
L
= 50
, V
IN
=
2V
V
OS
Offset Voltage
10
15
25
25
35
30
40
mV Max
R
L
= 50
, R
S
= 150
I
B
Input Bias Current
1
10
20
15
30
20
40
A Max
R
L
= 50
, R
S
= 1K
R
IN
Input Resistance
0.3
M
R
S
= 10K, R
L
= 50
C
IN
Input Capacitance
3.5
pF
R
O
Output Resistance
3
10
10
10
10
10
10
Max
R
S
= 10K, R
L
= 50
I
S1
Supply Current 1
20
30
35
30
35
35
35
mA Max
R
S
= 10K, V
IN
= 0V, R
L
= 1K
V
O1
Output Swing 1
2.4
2.2
2.2
2.2
2.2
2.2
2.2
V Min
R
S
= 150
, V
IN
=
2.5V, R
L
= 50
V
O2
Output Swing 2
2.2
2
2
2
2
2
2
R
S
= 150
, V
IN
=
2.5V, R
L
= 1K
V
O3
Output Swing 3
3.6
3.0
3.0
3.0
V
PP
Min
R
S
= 150
, V
IN
=
4.5V, R
L
= 50
I
OUT
Output Current
80
60
60
60
mA
V
IN
= 4V
ABSOLUTE MAXIMUM RATINGS (Note 1)
Supply Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vsupply
Storage Temperature Range . . . . . . . . . . . . -65
o
C to +150
o
C
Lead Temperature
(Soldering 10 seconds) . . . . . . . . . . . . . . . . . . . . . . 260
o
C
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . (Note 4)
ESD Tolerance (Note 3). . . . . . . . . . . . . . . . . . . . . . .
2000V
Thermal Resistance (
JA
) (Note 6)
H Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
o
C/W
N Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
o
C/W
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . 150
o
C
LH4002A / LH4002 / LH4002C
CALOGIC CORPORATION
, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-1076
CORPORATION
AC ELECTRICAL CHARACTERISTICS
The following specifications apply for Supply Voltage =
5V, V
CM
= 0, R
L
100K
and R
S
= 50
unless otherwise noted.
Boldface limits apply for T
A
= T
J
= T
MIN
to T
MAX
; all other limits T
A
= T
J
= 25
o
C.
SYMBOL
CHARACTERISTICS
TYP
LH4002A
LH4002
LH4002C
UNITS
CONDITIONS
Limit (Note 5)
Limit (Note 5)
Limit (Note 5)
SR
1
Slew Rate 1
3000
2750
2500
2500
V/
s
V
IN
=
2V, R
L
= 50
(Note 2)
SR
2
Slew Rate 2
2000
1750
1600
1500
V
IN
=
4V, R
L
= 50
(Note 2)
SS
BW
Small Signal
Bandwidth
300
250
220
200
MHz
R
L
= 50
, V
OUT
= 100mV
P-P
LS
BW
Large Signal
Bandwidth
140
100
90
80
R
L
= 50
, V
OUT
= 2V
P-P
P
BW
Power Bandwidth
130
100
90
80
R
L
= 50
, V
OUT
= 4V
P-P
t
r
, t
f
Rise Time
Fall Time
1.2
1.5
1.7
1.8
ns
R
L
= 50
, C
L
10pF
V
O
= 100mV
PP
t
pd
Propagation Delay
Time
2.0
ns
R
L
= 50
, C
L
10pF
V
O
= 100mV
PP
O
S
Overshoot
10
%
R
L
= 50
, C
L
10pF
V
O
= 100mV
PP
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not
apply when operating the device beyond its rated operating conditions.
Note 2: Slew rate is measured with 50
source impedance at 25
o
C. For accurate measurements, the input slew rate should be at least
5000V/
s.
Note 3: The test circuit consists of the human body model of 120pF in series with 1500
.
Note 4: The maximum power dissipation is a function of T
J(max),
JA
and T
A
. The maximum allowable power dissipation at any ambient
temperature is P
D
= (T
J(max)
- T
A
)/
JA
.
Note 5: Limits are guaranteed by testing, correlation or periodic characterization.
Note 6: For N package,
JA
is measured by soldering the unit directly on a printed circuit board and V
-
pins are connected to 2 square inches of 2
oz copper.
LH4002A / LH4002 / LH4002C
CALOGIC CORPORATION
, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-1076
TYPICAL PERFORMANCE CHARACTERISTICS
FREQUENCY (MHz)
1
10
2
5
BANDWIDTH
(LARGE SIGNAL & POWER)
20
50
400
100 200
8
6
4
2
0
10
9
7
5
3
1
V
OUT
(
V
)
P-P
R
L
= 100
R
L
= 50
SUPPLY VOLTAGE (V)
1
SUPPLY VOLTAGE
vs BANDWIDTH
140
-3dB BANDWIDTH (M
Hz)
3
5
7
9
400
380
360
340
320
300
280
260
240
220
200
180
160
R
L
= 50
R
L
= 100
FREQUENCY (MHz)
GAI
N
(dB)
FREQUENCY RESPONSE
PH
ASE
LAG
(D
EGREE
S
)
10
0
-10
-20
-30
72
48
24
0
15
5
-5
-15
-25
20
84
60
36
12
0.5
5
1 2
10 20
200
50 100
1000
500
R
L
= 100
V
IN
100mV
C
L
100pF
T
j
= 25C
FREQUENCY (MHz)
GAI
N
(dB)
0.5
5
1 2
FREQUENCY RESPONSE
PH
ASE
LAG
(D
EGREE
S
)
10 20
200
50 100
-5
-15
-25
-35
-45
60
40
20
0
0
-10
-20
-30
-40
5
70
50
30
10
80
90
1000
500
R
L
= 50
V
IN
100mV
C
L
10pF
T
j
= 25C
SUPPLY VOLTAGE (V)
1
SUPPLY VOLTAGE
vs SUPPLY CURRENT
0
3
5
7
9
50
45
40
35
30
25
20
15
10
5
SUPPL
Y CURRENT (mA)
1
OUTPUPT VOLTAGE
vs SLEW RATE
0
3
5
7
4000
3500
3000
2500
2000
1500
1000
500
V
OUT
(V )
P-P
R
L
= 50
R
L
= 100
SLEW RATE (V/
s)
CORPORATION
LH4002A / LH4002 / LH4002C
CALOGIC CORPORATION
, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-1076
CORPORATION
Wideband Unity Gain Amplifier
+5V
V
IN
-5V
3
1
2
8
4
5
V
OUT
-5V
0.01
F
0.1
F
+5V
50
LH4002CN
0.1
F
0.01
F
50
OP-AMP
+
_
Short Circuit Protection
V
OUT
3
1
2
8
4
5
-5V
+5V
INPUT
10
9
7
6
LH4002
LH4002A / LH4002 / LH4002C
CALOGIC CORPORATION
, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-1076
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