Wideband Video Buffer
CORPORATION
LH4002A / LH4002 / LH4002C
FEATURES
GENERAL DESCRIPTION
±5V
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 50Ω at slew rates of 2000 V/µs.
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
LH4002AH
LH4002H
LH4002CH
LH4002AN
LH4002N
LH4002CN
CONNECTION DIAGRAMS
Package
Temperature Range
-55
o
C to +125
o
C
-55
o
C to +125
o
C
-40
o
C to +85
o
C
-40
o
C to +85
o
C
-40
o
C to +85
o
C
-40
o
C to +85
o
C
HO8A (TO5-8 Lead)
HO8A (TO5-8 Lead)
HO8A (TO5-8 Lead)
N10A (Plastic Dip-10 Lead)
N10A (Plastic Dip-10 Lead)
N10A (Plastic Dip-10 Lead)
•
DC to 300 MHz Bandwidth with V
S
=
•
3000 V/µs Slew Rate into 50Ω
•
Wideband Amplifier Buffer
•
Wideband Line Driver
•
Video
•
Coaxial Cable Driver
APPLICATIONS
METAL CAN PACKAGE
INPUT
8
DUAL-IN-LINE
PACKAGE
+V
CC2
+V
CC1
INPUT
-V
CC1
1
2
3
4
5
10
9
8
7
6
E
1
E
3
OUTPUT
E
4
E
2
+V
CC1
7
1
-V
CC1
+V
CC2
6
2
-V
CC2
NC
5
4
3
NC
-V
CC2
OUTPUT
HO8A
TOP VIEW
N10A
CALOGIC CORPORATION
, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-1076
LH4002A / LH4002 / LH4002C
CORPORATION
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 (θ
JA
) (Note 6)
H Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
o
C/W
N Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
o
C/W
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . 150
o
C
DC ELECTRICAL CHARACTERISTICS
The following specifications apply for Supply Voltage =
±5V,
V
CM
= 0, R
L
≥
100KΩ and R
S
= 50Ω 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.
LH4002A
SYMBOL
CHARACTERISTICS
TYP
Limit
(Note 5)
0.96
0.95
0.89
0.89
15
25
10
20
LH4002
Limit
(Note 5)
0.95
0.95
0.88
0.87
25
35
15
30
LH4002C
Limit
(Note 5)
0.95
0.95
V/V Min
A
V2
A
V3
V
OS
Voltage Gain 2
Voltage Gain 3
Offset Voltage
0.92
0.92
10
0.87
0.87
30
40
20
40
mV Max
µA
Max
MΩ
pF
10
10
30
35
2.2
2.2
2
2
3.0
60
10
10
30
35
2.2
2.2
2
2
3.0
60
10
10
35
35
2.2
2.2
2
2
3.0
60
V
PP
Min
mA
Ω
Max
R
S
= 10K, R
L
= 50Ω
UNITS
CONDITIONS
A
V1
Voltage Gain 1
0.99
R
L
= 1K, V
IN
=
±2V,
R
S
= 10K
R
L
= 50Ω, V
IN
=
±3V
R
L
= 50Ω, V
IN
=
±2V
R
L
= 50Ω, R
S
= 150Ω
I
B
R
IN
C
IN
R
O
Input Bias Current
Input Resistance
Input Capacitance
Output Resistance
1
0.3
3.5
3
R
L
= 50Ω, R
S
= 1KΩ
R
S
= 10K, R
L
= 50Ω
I
S1
Supply Current 1
20
mA Max
R
S
= 10K, V
IN
= 0V, R
L
= 1K
R
S
= 150Ω, V
IN
=
±2.5V,
R
L
= 50Ω
V
O1
Output Swing 1
2.4
±V
Min
R
S
= 150Ω, V
IN
=
±2.5V,
R
L
= 1K
R
S
= 150Ω, V
IN
=
±4.5V,
R
L
= 50Ω
V
IN
= 4V
V
O2
V
O3
I
OUT
Output Swing 2
Output Swing 3
Output Current
2.2
3.6
80
CALOGIC CORPORATION
, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-1076
LH4002A / LH4002 / LH4002C
CORPORATION
AC ELECTRICAL CHARACTERISTICS
The following specifications apply for Supply Voltage =
±5V,
V
CM
= 0, R
L
≥
100KΩ and R
S
= 50Ω 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.
LH4002A
SYMBOL
CHARACTERISTICS
TYP
Limit (Note 5)
SR
1
SR
2
SS
BW
LS
BW
P
BW
t
r
, t
f
t
pd
O
S
Slew Rate 1
Slew Rate 2
Small Signal
Bandwidth
Large Signal
Bandwidth
Power Bandwidth
Rise Time
Fall Time
Propagation Delay
Time
Overshoot
3000
2000
300
140
130
1.2
2.0
10
2750
1750
250
100
100
1.5
Limit (Note 5)
2500
1600
220
90
90
1.7
Limit (Note 5)
2500
V/µs
1500
200
80
80
1.8
ns
ns
%
MHz
V
IN
=
±2V,
R
L
= 50Ω (Note 2)
V
IN
=
±4V,
R
L
= 50Ω (Note 2)
R
L
= 50Ω, V
OUT
= 100mV
P-P
R
L
= 50Ω, V
OUT
= 2V
P-P
R
L
= 50Ω, V
OUT
= 4V
P-P
R
L
= 50Ω, C
L
≤
10pF
V
O
= 100mV
PP
R
L
= 50Ω, C
L
≤
10pF
V
O
= 100mV
PP
R
L
= 50Ω, C
L
≤
10pF
V
O
= 100mV
PP
LH4002
LH4002C
UNITS
CONDITIONS
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 50Ω source impedance at 25
o
C. For accurate measurements, the input slew rate should be at least
5000V/µs.
Note 3:
The test circuit consists of the human body model of 120pF in series with 1500Ω.
Note 4:
The maximum power dissipation is a function of T
J(max),
θ
JA
and T
A
. The maximum allowable power dissipation at any ambient
temperature is P
D
= (T
J(max)
- T
A
)/θ
JA
.
Note 5:
Limits are guaranteed by testing, correlation or periodic characterization.
Note 6:
For N package,
θ
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.
CALOGIC CORPORATION
, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-1076
LH4002A / LH4002 / LH4002C
CORPORATION
TYPICAL PERFORMANCE CHARACTERISTICS
FREQUENCY RESPONSE
20
15
PHASE LAG (DEGREES)
FREQUENCY RESPONSE
5
0
-5
-10
GAIN (dB)
90
PHASE LAG (DEGREES)
10
5
GAIN (dB)
80
70
60
50
40
30
20
10
0.5 1 2
0
5 10 20 50 100 200 500 1000
84
72
60
48
36
24
12
0.5 1 2
0
5 10 20 50 100 200 500 1000
0
-5
R
L
= 100Ω
-10
V
IN
≤
100mV
-15
C
L
≤
100pF
-20 T = 25˚C
j
-25
-30
-15
-20
R
L
= 50Ω
-25
V
IN
≤
100mV
-30
C
L
≤
10pF
-35 T = 25˚C
j
-40
-45
FREQUENCY (MHz)
FREQUENCY (MHz)
BANDWIDTH
(LARGE SIGNAL & POWER)
10
9
8
7
V
OUT
(V
P-P
)
-3dB BANDWIDTH (MHz)
SUPPLY VOLTAGE
vs BANDWIDTH
400
380
360
340
320
300
280
260
240
220
200
180
160
140
1
R
L
= 100Ω
R
L
= 100Ω
R
L
= 50Ω
6
5
4
3
2
1
0
1
2
5
R
L
= 50Ω
10 20
50 100 200 400
3
5
7
9
FREQUENCY (MHz)
SUPPLY VOLTAGE (±V)
SUPPLY VOLTAGE
vs SUPPLY CURRENT
50
45
SUPPLY CURRENT (±mA)
OUTPUPT VOLTAGE
vs SLEW RATE
4000
3500
R
L
= 100Ω
SLEW RATE (V/µs)
40
35
30
25
20
15
10
5
0
1
3
5
7
9
SUPPLY VOLTAGE (±V)
3000
2500
2000
1500
R
L
= 50Ω
1000
500
0
1
3
5
7
V
OUT
(V
P-P
)
CALOGIC CORPORATION
, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-1076
LH4002A / LH4002 / LH4002C
CORPORATION
Wideband Unity Gain Amplifier
+5V
0.1µF
+5V
0.01µF
1
2
V
IN
+
OP-AMP
_
3
LH4002CN
5
4
8
V
OUT
0.01µF
50Ω
-5V
0.1µF
50Ω
-5V
Short Circuit Protection
+5V
1
2
10
9
8
6
7
V
OUT
INPUT
3
LH4002
4
5
-5V
CALOGIC CORPORATION
, 237 Whitney Place, Fremont, California 94539, Telephone: 510-656-2900, FAX: 510-651-1076
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