1
FN7159
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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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.
EL4093
300MHz DC-Restored Video Amplifier
The EL4093 is a complete DC-
restored video amplifier subsystem,
featuring low power consumption and
high slew rate. It contains a current feedback amplifier and a
sample and hold amplifier designed to stabilize video
performance. When the HOLD logic input is low, the sample
and hold may be used as a general purpose op amp to null
the DC offset of the video amplifier. When the HOLD input
goes high the sample and hold stores the correction voltage
on the hold capacitor to maintain DC correction during the
subsequent video scan line.
The sample and hold amplifier contains a current output
stage that greatly simplifies its connection to the video
amplifier. Its high output impedance also helps to preserve
video linearity at low supply voltages. For ease of interfacing,
the HOLD input is TTL-compatible. This device has an
operational temperature of -40C to +85C and is packaged
in plastic 16-pin DIP and 16-pin SOIC.
Pinout
Features
High accuracy DC restoration for video
Low supply current of 9.5mA typ.
300MHz bandwidth
1500V/s slew rate
0.04% differential gain and 0.02 differential phase into
150
for NTSC
1.5mV max. restored DC offset
Sample and hold amplifier with fast enable and low
leakage
TTL-compatible HOLD logic input
Applications
Input amplifier in video equipment
Restoration amplifier in video mixers
Demo Board
A demo PCB is available for this product. Request "EL4093
Demo Board."
EL4093
(16-PIN PDIP, SO)
TOP VIEW
Ordering Information
PART
NUMBER
TEMP. RANGE
PACKAGE
PKG. NO.
EL4093CN
-40C to +85C
16-Pin PDIP
MDP0031
EL4093CS
-40C to +85C
16-Pin SOIC
MDP0027
Data Sheet
January 1996, Rev B
2
Absolute Maximum Ratings
(T
A
= 25C)
V
S
V+ to V- Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . 12.6V
V
HOLD
Voltage at HOLD input
(DGND-0.7) to (DGND+5.5V)
V
IN
Voltage at any other input . . . . . . . . . . . . . . . . . . . . . V+ to V-
V
IN
Difference between Sample and Hold inputs . . . . . . . . . .8V
I
OUT1
Video amplifier output current . . . . . . . . . . . . . . . . . . . 30mA
I
OUT2
S/H amplifier output current . . . . . . . . . . . . . . . . . . . . 10mA
I
IN
Maximum current into other pins. . . . . . . . . . . . . . . . . . 6mA
P
D
Maximum Power Dissipation . . . . . . . . . . . . . . . . See Curves
T
A
Operating Ambient Temperature Range . . . . . -40C to +85C
T
J
Operating Junction Temperature. . . . . . . . . . . . . . . . . . 150C
T
ST
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
Power supplies at 5V, T
A
= 25C
Sample and Hold
PARAMETER
DESCRIPTION
MIN
TYP
MAX
UNITS
I
S,HOLD
Total Supply current in HOLD mode
9.5
11.5
mA
I
S,SAMPLE
Total Supply current in SAMPLE mode
8.5
10.5
mA
Video Amplifier Section (Not Restored)
PARAMETER
DESCRIPTION
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
10
110
mV
I
B
+
Non-Inverting Input Bias Current
10
25
A
I
B
-
Inverting Input Bias Current
15
50
A
R
OL
Transimpedance, V
OUT
= 2.5V, R
L
= 150
150
400
k
V
O
Output Voltage Swing, R
L
= 150
3
3.5
V
I
SC
Output Short-Circuit Current
60
100
mA
Open-Loop DC Electrical Specifications
Power supplies at 5V, T
A
= 25C
Sample and Hold Section
PARAMETER
DESCRIPTION
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
0.5
1.5
mV
TCV
OS
Average Offset Voltage Drift
6
V/C
I
B
Input Bias Current
1
2
A
I
OS
Input Offset Current
10
200
nA
TCI
OS
Average Offset Current Drift
0.1
nA/C
V
CM
Common Mode Input Range
2.5
2.8
V
g
M
Transconductance (R
L
= 500
)
5
15
A/V
CMRR
Common Mode Rejection Ratio (V
CM
-2.5V to +2.5V)
70
90
dB
V
IL
HOLD Logic Input Low (referenced to Digital GND)
0.8
V
V
IH
HOLD Logic Input High (referenced to Digital GND)
2.0
V
V
GND
Digital GND Reference Voltage
(V-)
(V+) - 4.0
V
I
DROOP
Hold Mode Droop Current
10
70
nA
I
CHARGE
Charge Current Available to C
HOLD
5.5
8.5
mA
V
O
Output Voltage Swing (R
L
= 10k
)
3
3.5
V
I
O
Output Current Swing (R
L
= 0
)
4.5
5.5
mA
EL4093
3
Typical Application
Closed-Loop AC Electrical Specifications
Power supplies at 5V, T
A
= 25C, R
F
= R
G
= 750
, R
L
= 150
, C
L
= 5pF, C
IN
-
(parasitic) = 1.8pF
Video Amplifier Section
PARAMETER
DESCRIPTION
MIN
TYP
MAX
UNITS
BW, -3dB
-3dB Small-Signal Bandwidth
300
MHz
BW, 0.1dB
0.1dB Flatness Bandwidth
50
MHz
Peaking
Frequency Response Peaking
0
dB
SR
Slew rate, V
OUT
between -2V and +2V
1500
V/s
dG
Differential Gain Error, Voffset between -714mV and +714mV
0.04
%
d
Differential Phase Error, Voffset between -714mV and +714mV
0.02
Closed-Loop AC Electrical Specifications
Power supplies at 5V, T
A
= 25C, R
F
= R
G
= 750
, R
L
= 150
, C
L
= 5pF,
C
HOLD
= 2.2nF
Sample and Hold Section
PARAMETER
DESCRIPTION
MIN
TYP
MAX
UNITS
I
STEP
Change in Sample to Hold Output Current Due to Hold Step
0.1
A
T
SH
Sample to Hold Delay Time
15
ns
T
HS
Hold to Sample Delay Time
40
ns
T
AC
Settling Time to 1% (DC Restored Amplifier Output) Video Amplifier Input
from 0 to 1V
2.2
s
EL4093
4
Typical Performance Curves
Non-inverting Frequency
Response (Gain)
Non-inverting Frequency
Response (Phase)
Frequency Response
for Various R
L
Frequency Response
for Various C
L
Inverting Frequency
Response (Phase)
Inverting Frequency
Response (Gain)
Frequency Response for
Various R
F
and R
G
Frequency Response
for Various C
IN
3dB Bandwidth vs
Temperature (Video Amp)
EL4093
5
Typical Performance Curves
(Continued)
Peaking vs Temperature
(Video Amp)
Output Voltage
Swing vs Frequency
2nd and 3rd Harmonic
Distortion vs Frequency
Supply Current
vs Temperature
Voltage and Current
Noise vs Frequency
Input Offset Voltage
vs Die Temperature
(Video Amp, 3 Sample)
Input Bias Current vs
Temperature (Video Amp)
Transimpedance vs
Temperature (Video Amp)
EL4093
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