1
FN7158
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2003. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc.
All other trademarks mentioned are the property of their respective owners.
EL4089
DC Restored Video Amplifier
The EL4089 is an 8-pin complete DC-
restored monolithic video amplifier
sub-system. It contains a high quality
video amplifier and a nulling, sample-and-hold amplifier
specifically designed to stabilize video performance.
When the HOLD logic input is set to a TTL/CMOS logic 0,
the sample - and - hold amplifier can be used to null the DC
offset of the video amplifier.
When the HOLD input goes to a TTL/CMOS logic l, the
correcting voltage is stored on the video amplifier's input
coupling capacitor. The correction voltage can be further
corrected as need be, on each video line.
The video amplifier is optimized for video performance and
low power. Its current feedback design allows the user to
maintain essentially the same bandwidth over a gain range
of nearly 10:1. The amplifier drives back-terminated 75
lines.
The EL4089 is fabricated in Elantec's proprietary
Complementary Bipolar process which produces NPN and
PNP transistors with equivalent AC and DC performance.
The EL4089 is specified for operation over -40C to +85C
temperature range.
Pinout
Features
Complete video level restoration system
0.02% differential gain and 0.05 differential phase
accuracy at NTSC
60MHz bandwidth
0.1dB flatness to 10MHz
V
S
= 5V to 15V
TTL/CMOS hold signal
Applications
Input amplifier in video equipment
Restoration amplifier in video mixers
DC Restoring Amplifier with a gain of 2, restoring to ground
EL4089
(8-PIN PDIP, SO)
TOP VIEW
Ordering Information
PART
NUMBER
TEMP. RANGE
PACKAGE
PKG. NO.
EL4089CN
-40C to +85C
8-Pin PDIP
MDP0031
EL4089CS
-40C to +85C
8-Pin SO
MDP0027
Data Sheet
July 1998, Rev C
2
NOTES:
1. For current feedback amplifiers, A
VOL
= R
OL
/R
IN
-.
2. V
CM
= 10V for V
S
= 15V.
3. Measured from S/H Input to amplifier output, while restoring.
4. V
OS
is measured at V
S
= 4.5V and V
S
= 16V, both supplies are changed simultaneously.
Absolute Maximum Ratings
(T
A
= 25C)
Voltage between V+ and V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33V
Voltage between V
IN
+, S/H
IN
+,and GND pins . . (V+) +0.5V to (V-) -0.5V
V
OUT
Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60mA
Current into V
IN
- and HOLD Pins . . . . . . . . . . . . . . . . . . . . . . . 5mA
Internal Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . See Curves
Operating Ambient Temperature Range . . . . . . . . . . -40C to +85C
Operating Junction Temperature Plastic DIP or SOL. . . . . . . . 150C
Storage Temperature Range . . . . . . . . . . . . . . . . . . -65C to +150C
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests
are at the specified temperature and are pulsed tests, therefore: T
J
= T
C
= T
A
Open-Loop DC Electrical Specifications
Provisional Supplies at 15V, Load = 1k
; T
A
= +25C
PARAMETER
DESCRIPTION
TEMP
MIN
TYP
MAX
UNITS
AMPLIFIER SECTION (HOLD = 5V)
V
OS
Input Offset Voltage
+25C
12
25
mV
Ib+
IN+ Input Bias Current
+25C
1
5
A
Ib-
IN- Input Bias Current
+25C
18
150
A
R
OL
Transimpedance (Note 1)
+25C
180
800
k
R
IN
-
IN- Resistance
+25C
20
CMRR
Common Mode Rejection Ratio (Note 2)
+25C
44
60
dB
V
O
Output Voltage Swing
+25C
12
13
V
I
SC
Short Circuit Current
(IN+ Only Driven to 0.5V)
+25C
45
100
mA
RESTORE SECTION
V
OS
, Comp
Composite Input Offset Voltage (Note 3)
+25C
3
7
mV
Ib+, r
Restore In+ Input Bias Current
+25C
3
12
A
I
OUT
Restoring Current Available
+25C
180
300
A
CMRR
Common Mode Rejection Ratio (Note 2)
+25C
60
70
dB
PSRR
Power Supply Rejection Ratio (Note 4)
+25C
60
90
dB
V
THRESHOLD
HOLD Logic Threshold
+25C
0.8
2.0
V
I
IH
, Hold
HOLD Input Current @ Logic High
+25C
1
5
A
I
IL
, Hold
HOLD Input Current @ Logic Low
+25C
5
15
A
SUPPLY CURRENT
Isy, Hold
Supply Current (HOLD = 5V)
+25C
4.8
6.0
9.0
mA
Isy, Sampling
Supply Current (HOLD = 0V)
+25C
5.0
6.5
11.0
mA
EL4089
3
NOTES:
1. Test fixture was designed to minimize capacitance at the IN- input. A "good" fixture should have less than 2pF of stray capacitance to ground at
this very sensitive pin. See application notes for further details.
2. SR measured at 20% to 80% of a 4V
PK-PK
square wave.
3. DC offset from -0.714V through +0.714V, ac amplitude is 286mV
P-P
, equivalent to 40 IRE.
Closed-Loop AC Electrical Specifications
Provisional Supplies at 15V, Load = 150
and 15pF. R
F
and R
G
= 300
; A
V
= 2,
T
A
= 25C. (Note 1)
PARAMETER
DESCRIPTION
MIN
TYP
MAX
UNITS
AMPLIFIER SECTION
SR
Slew Rate (Note 2)
500
V/s
SR
Slew Rate with 5V Supplies (Note 2)
275
V/s
BW
Bandwidth 5V Supplies
-3dB
60
MHz
-3dB
55
MHz
BW
Bandwidth 5V Supplies
0.1dB
25
MHz
0.1dB
23
MHz
dG
Differential Gain at 3.58MHz (Note 3)
V
S
= 15V
0.02
%
V
S
= 5V
0.03
%
dPh
Differential Phase at 3.58MHz (Note 3)
V
S
= 15V
0.05
V
S
= 5V
0.06
RESTORE SECTION
SR
Restore Amplifier Slew Rate (Test Circuit) 20%--80%
25
V/s
T
HE
Time to Enable Hold
25
ns
T
HD
Time to Disable Hold
40
ns
EL4089
4
Typical Performance Curves
Supply Current vs Temperature
V
S
= 15V
Supply Current
vs Supply Voltage
Amplifier Input Current
vs Die Temperature
Restoring Current
vs Temperature
Amplifier Output Voltage
vs Die Temperature;
V
S
= 15V
Amplifier Offset Voltage
vs Die Temperature
EL4089
5
Typical Performance Curves
(Continued)
CMRR for Amplifier and Restore Section
vs Die Temperature
Relative Frequency Response
for Various Gains, R
F
= 300
Frequency Response Flatness vs Supply
A
V
= 2; R
F
= 300
Frequency Response Flatness for Various
Load and Supply Conditions
A
V
= 2; R
F
= 300
Frequency Response vs Supply
A
V
= 2; R
F
= 300
Transimpedance (R
OL
)
vs Die Temperature
EL4089
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