EL2009C
90 MHz 1 Amp Buffer Amplifier
Electrical Characteristics
V
S
e
g
15V
Parameter
V
S
a
V
S
b
SR
1
SR
2
t
r
t
f
BW
C
IN
THD
Description
Supply Sensitivity
(Note 5)
Slew Rate
(Note 6)
Slew Rate
(Note 7)
Rise Fall Time
b
3 dB Bandwidth
g
10V
R
S
e
50X unless otherwise specified
Limits
Min
Typ
Contd
Max
2
Test
Level
I
V
V
V
V
V
1
I
Units
Test Conditions
V
IN
Load
%
50X
10X
10X
10X
10X
Temp
25 C
25 C
mV V
V
ms
V
ms
ns
TD is 2 1in
MHz
pF
%
3000
2500
1250
7
90
25
g
5V
25 C
25 C
25 C
25 C
25 C
100 mV
100 mV
Input Capacitance
Total Harmonic Distortion
Note 1 If the input exceeds the ratings shown (or the supplies) or if the input voltage exceeds
g
7 5V then the input current must be
limited to
g
50 mA
Note 2 The maximum power dissipation depends on package type ambient temperature and heat sinking See the characteristic
curves for more details
Note 3 Force the input to
a
12V and the output to
a
10V and measure the output current Repeat with
b
12V input and
b
10V on
the output
Note 4 V
S
e
g
4 5V then V
S
is changed to
g
18V
Note 5 V
S
a e a
15V V
S
b e
4 5V then V
S
b
is changed to
b
18V and V
S
b e b
15V V
S
a e a
4 5V then V
S
a
is changed to
a
18V
Note 6 Slew Rate is measured between V
OUT
e a
5V and
b
5V
Note 7 Slew Rate is measured between V
OUT
e a
2 5V and
b
2 5V
Voltage Gain and
Phase vs Frequency
Active operating area
Active operating area
2009 – 4
2009 – 5
2009 – 6
Applications Information
The EL2009 is a higher bandwidth of the
EL2008 It is recommended that you read the
EL2008 application section
Video Distribution Amplifier
The EL2009 can drive 15 double matched 75X
cables If the EL2009 is used within an op amp
feedback loop the output levels are independent
of loading The circuit below accepts 1 of 2 inputs
and drives 15 cables Pin 8 of the EL2020 (Dis-
able) is used to multiplex between the inputs and
can be easily expanded to accept more inputs
The circuit as shown when fully loaded has dif-
ferential phase
k
0 1 and differential gain
k
0 1% The 100X resistor at the EL2009 input
(R1) is necessary to stabilize the loop The
EL2009 operates with a CLASS AB output which
exhibits a slight rise in output impedance when-
3
ELANTEC [ ELANTEC SEMICONDUCTOR ]
