1
FN7327.1
EL4501
Video Front End
The EL4501 is a highly-integrated
Video Front End (VFE) incorporating
all of the key signal conditioning
functions for analog video signals. It provides a flexible front-
end interface for analog or analog/digital video sub-systems.
The VFE contains a high bandwidth DC-restore, an
advanced sync separator and a data slicer with an
adjustable threshold, configurable output and power-down
mode.
The VFE performs restoration of the DC level (blanking
level) of a video signal and the recovery of all signal timing
necessary for synchronization and control. Additionally, data
embedded in the active video or VBI regions of the video
signal may be extracted using the flexible data slicer
incorporated into the VFE. The advanced sync separator
exhibits excellent noise immunity by incorporating a digital
brick wall filter and signal qualification algorithm. The DC-
restored video amplifier is unity gain stable with an unloaded
-3dB bandwidth of 100MHz. The input common mode
voltage range extends from the negative rail to within 1.5V of
the positive rail. When driving a 75
double terminated
coaxial cable, the amplifier can drive to within 150mV of
either rail. With 200V/s slew rate, the amplifier is well suited
for composite and component video applications.
The VFE operates from a single 5V supply from -40C to
+85C and is available in a reduced footprint 24-pin QSOP
package.
Features
DC-restore and sync separator
Wideband (100MHz) DC-restore
Advanced sync separator
Programmable data slicer
Single 5V operation
Diff gain/phase = 0.05%/0.03, R
L
=10k
, A
V
=1
Low power (<75mW)
Pb-free available
Applications
Video capture & editing
Video projectors
Set top boxes
Security video
Embedded data recovery
Pinout
EL4501
(24-PIN QSOP)
TOP VIEW
Ordering Information
PART
NUMBER
PACKAGE
TAPE & REEL
PKG. DWG. #
EL4501IU
24-Pin QSOP
-
MDP0040
EL4501IU-T7
24-Pin QSOP
7"
MDP0040
EL4501IU-T13
24-Pin QSOP
13"
MDP0040
EL4501IUZ
(See Note)
24-Pin QSOP
(Pb-free)
-
MDP0040
EL4501IUZ-T7
(See Note)
24-Pin QSOP
(Pb-free)
7"
MDP0040
EL4501IUZ-
T13 (See Note)
24-Pin QSOP
(Pb-free)
13"
MDP0040
NOTE: Intersil Pb-free products employ special Pb-free material
sets; molding compounds/die attach materials and 100% matte tin
plate termination finish, which is compatible with both SnPb and
Pb-free soldering operations. Intersil Pb-free products are MSL
classified at Pb-free peak reflow temperatures that meet or exceed
the Pb-free requirements of IPC/JEDEC J Std-020B.
1
2
3
4
16
15
14
13
5
6
7
12
11
9
8
10
20
19
18
17
24
23
22
21
VFB
VIDEO IN
DS MODE
DS ENABLE
GND
GNDD
RFREQ
FSEL
SYNC IN
LOS
COMPOSITE
HORIZONTAL
VIDEO OUT
DS OUT
DS REF
REF IN
REF OUT
VS
VSD
SYNC AMP
SLICE MODE
BACK PORCH
ODD/EVEN
VERTICAL
Data Sheet
July 7, 2004
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2003-2004. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc.
Manufactured under License, U.S. Patents 5,486,869; 5,754,250
All other trademarks mentioned are the property of their respective owners.
2
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typ 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
Absolute Maximum Ratings
(T
A
= 25C)
Supply Voltage (V
S
to GND) . . . . . . . . . . . . . . . . . . . . . . . . . . . .+6V
Pin Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . .GND -0.3V, V
S
+0.3V
Storage Temperature Range . . . . . . . . . . . . . . . . . .-65C to +150C
Ambient Operating Temperature . . . . . . . . . . . . . . . .-40C to +85C
Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 125C
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves
Maximum Continuous Current (VIDEO OUT) . . . . . . . . . . . . . 50mA
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.
Electrical Specifications
V
S
= V
SD
= 5V, GND = 0V, T
A
= 25C, Input Video = 1V
P-P
, R
FREQ
= 130k
PARAMETER
DESCRIPTION
CONDITIONS
MIN
TYP
MAX
UNIT
I
SA
Input Supply Current
No load
7.5
10.5
13.5
mA
I
SD
Digital Supply Current
No load, V
IN
= 0V
1.9
2.3
4
mA
V
S
Input Supply Voltage Range
4.5
5.5
V
V
SD
Digital Input Supply Voltage Range
4.5
5.5
V
VIDEO AMPLIFIER SECTION
V
OP
Positive Output Voltage Swing (VIDEO OUT)
(Note 1)
R
L
= 150
to V
S
/ 2
4.65
4.70
V
R
L
= 150
to GND
4.20
4.60
V
R
L
= 1k
to V
S
/ 2
4.85
4.90
V
V
ON
Negative Output Voltage Swing (VIDEO OUT)
(Note 1)
R
L
= 150
to V
S
/ 2
0.15
0.30
V
R
L
= 150
to GND
0.06
0.25
V
R
L
= 1k
to V
S
/ 2
0.05
0.20
V
+I
OUT
Positive Output Current (VIDEO OUT)
R
L
= 10
to V
S
/ 2
60
70
mA
-I
OUT
Negative Output Current (VIDEO OUT)
R
L
= 10
to V
S
/ 2
-50
-60
mA
dG
Differential Gain Error (VIDEO OUT) (Note 2) A
V
= 1, R
L
= 10k
, R
F
= 0
0.05
%
dP
Differential Phase Error (VIDEO OUT) (Note
2)
A
V
= 1, R
L
= 10k
, R
F
= 0
0.03
BW
Bandwidth
-3dB, G = 1, R
L
= 10k
to GND, R
F
= 0
100
MHz
-3dB, G = 1, R
L
= 150
to GND, R
F
= 0
60
MHz
BW1
Bandwidth
0.1dB, G = 2, R
L
= 150
to GND
8
MHz
SR
Slew Rate
25% to 75%, 3.5V
P-P
, R
L
= 150
, R
F
= 0
80
96
V/s
V
RL
Ref Level Range
0/3.5
V
t
S
Settling Time
to 0.1%, V
IN
= 0V to 3V
35
ns
R
IN
Input Resistance (VIDEO IN)
115
k
C
IN
Input Capacitance (VIDEO IN)
1.5
pF
A
VOL
Open Loop Voltage Gain
R
L
= no load, V
OUT
= 0.5V to 3V
65
dB
R
L
= 150
to GND, V
OUT
= 0.5V to 3V
50
dB
DC-RESTORE SECTION
CMIR
Common Mode Input Range (REF IN)
0/3.5
V
V
OS
Input Offset Voltage
DC restored
20
mV
TCV
OS
Input Offset Voltage Temperature Coefficient
10
V/C
I
B
Input Bias Current (REF IN)
V
CM
= 0V to 3.5V
-10
0.001
10
A
V
REF
Reference Output Voltage (REF OUT)
I
OUT
= +2mA to -0.5mA
1.15
1.3
1.4
V
EL4501
3
I
RMAX
Available Restore Current (VFB)
18.5
A
DATA SLICER SECTION
I
IH
Input High Current (DS MODE & DS
ENABLE)
V
IH
= 5V
6
10
A
I
IL
Input Low Current (DS MODE & DS ENABLE) V
IL
= 0V
200
350
nA
V
IH
Input High Voltage (DS MODE & DS
ENABLE)
4.5
V
V
IL
Input Low Voltage (DS MODE & DS ENABLE)
0.5
V
V
OH
Output High Voltage (DS OUT)
I
OUT
= -1mA
4.75
4.9
V
V
OL
Output Low Voltage (DS OUT)
I
OUT
= +1mA
0.1
0.25
V
I
OUT
Short Circuit Current (DS OUT)
R
L
= 10
to 2.5V
8
11
mA
I
B
Input Bias Current (DS REF)
DS REF = 0V to 5V
-10
0.001
10
A
V
OS
Input Offset Voltage
-20
+20
mV
V
HYS
Hysteresis
5
mV
t
PD
Propagation Delay
50% to 50%
18
ns
t
R/F
Rise/Fall Time
10% to 90%, R
L
= 150k
, C
L
= 5pF
1.2
ns
SYNC SEPARATOR SECTION
I
IH
Input High Current (FSEL & SYNC MODE)
V
IH
= 5V
-1
1
A
I
IL
Input Low Current (FSEL & SYNC MODE)
V
IL
= 0V
-1
1
A
V
IH
Input High Voltage (FSEL & SYNC MODE)
4.5
V
V
IL
Input Low Voltage (FSEL & SYNC MODE)
0.5
V
V
OH
Output High Voltage
I
OH
= -1.6mA
4.6
V
V
OL
Output Low Voltage
I
OL
= +1.6mA
0.4
V
V
THRSHA
Adaptive Slice Level
SYNC MODE = 0V
40
50
60
%
V
THRSHF
Fixed Slice Threshold
SLICE MODE = V
S
80
100
120
mV
V
SI
SYNC IN Reference Voltage
1.8
V
R
INSI
SYNC IN Input Impedance
115
k
V
RANGE
Input Dynamic Range
0.5
2.0
V
P-P
t
CD
COMPOSITE Delay
FSEL = 0, from 50% of sync leading edge
25
35
45
ns
t
CDF
COMPOSITE Delay
FSEL = 1, from 50% of sync leading edge
150
225
280
ns
t
BD
BACK PORCH Delay
FSEL = 0, from 50% of trailing sync edge
125
170
225
ns
t
BDF
BACK PORCH Delay
FSEL = 1, from 50% of trailing sync edge
250
420
550
ns
t
HD
HORIZONTAL Delay
FSEL = 0/1, from 50% of sync leading edge
365
470
585
ns
t
BW
BACK PORCH Width
FSEL = 0/1
2.8
3.2
4.1
s
t
HW
HORIZONTAL Width
FSEL = 0
1.1
1.3
1.5
s
t
HWF
HORIZONTAL Width
FSEL = 1
1.2
1.5
1.8
s
t
VW
VERTICAL Width
FSEL = 0/1, standard NTSC
196
198
200
s
t
VDD
VERTICAL Default Delay
FSEL = 0
26.5
31.2
35.9
s
t
VDDF
VERTICAL Default Delay
FSEL = 1
31.5
s
f
H
Horiz Scan Rate
15
130
kHz
Electrical Specifications
V
S
= V
SD
= 5V, GND = 0V, T
A
= 25C, Input Video = 1V
P-P
, R
FREQ
= 130k
(Continued)
PARAMETER
DESCRIPTION
CONDITIONS
MIN
TYP
MAX
UNIT
EL4501
4
V
LOSE
Analog LOS Enable Threshold
Minimum sync amplitude to enable outputs
120
mV
V
LOSD
Analog LOS Disable Threshold
Maximum sync amplitude to disable outputs
80
mV
t
JIT
Output Jitter
All sync separator outputs
5
ns
A
SA
SYNC AMP Gain
1.7
2.0
2.3
R
SA
SYNC AMP Output Impedance
200
V
RFREQ
R
FREQ
Reference Voltage
R
FREQ
= 13k
to 130k
1.15
1.28
1.4
V
NOTES:
1. R
L
is Total Load Resistance due to Feedback Resistor and Load Resistor.
2. AC signal amplitude = 286mV
PP
, F = 3.58MHz, REF IN is swept from 0.8V to 3.4V, R
L
is DC coupled.
Electrical Specifications
V
S
= V
SD
= 5V, GND = 0V, T
A
= 25C, Input Video = 1V
P-P
, R
FREQ
= 130k
(Continued)
PARAMETER
DESCRIPTION
CONDITIONS
MIN
TYP
MAX
UNIT
Typical Performance Curves
FIGURE 1. NON-INVERTING FREQUENCY RESPONSE (GAIN)
FIGURE 2. NON-INVERTING FREQUENCY RESPONSE
(PHASE)
FIGURE 3. FREQUENCY RESPONSE FOR VARIOUS R
L
FIGURE 4. FREQUENCY RESPONSE FOR VARIOUS C
L
4
2
0
-2
-4
-6
100K
1M
10M
100M
FREQUENCY (Hz)
NORMALIZED MAGNITU
D
E
(
d
B)
V
REF_IN
=1.3V
R
L
=150
A
V
=1
R
F
=0
A
V
=5
R
F
=1k
A
V
=2
R
F
=1k
45
0
-45
-90
-135
-180
PHASE
(
)
100K
1M
10M
100M
FREQUENCY (Hz)
V
REF_IN
=1.3V
R
L
=150
A
V
=1
R
F
=0
A
V
=5
R
F
=1k
A
V
=2
R
F
=1k
R
L
=10k
4
2
0
-2
-4
-6
100K
1M
10M
100M
FREQUENCY (Hz)
NORMALIZE
D
MAGNITUDE (
d
B
)
V
REF_IN
=1.3V
R
F
=0
A
V
=1
R
L
=150
R
L
=1k
8
4
0
-4
-8
-12
NORMALIZE
D
MAGNITUDE (
d
B
)
100K
1M
10M
100M
FREQUENCY (Hz)
C
L
=39pF
C
L
=15pF
C
L
=0pF
V
REF_IN
=1.3V
R
F
=150
A
V
=1
EL4501
5
FIGURE 5. FREQUENCY RESPONSE FOR VARIOUS R
F
FIGURE 6. FREQUENCY RESPONSE FOR VARIOUS R
L
FIGURE 7. FREQUENCY RESPONSE FOR VARIOUS C
L
FIGURE 8. CLOSED LOOP OUTPUT IMPEDANCE
FIGURE 9. OPEN LOOP GAIN AND PHASE vs FREQUENCY
FIGURE 10. PSRR AND CMRR vs FREQUENCY - VIDEO AMP
Typical Performance Curves
(Continued)
4
2
0
-2
-4
-6
100K
1M
10M
100M
FREQUENCY (Hz)
NORMALIZ
E
D
GA
IN
(dB)
A
V
=2
R
L
=150
R
F
=2k
R
F
=1k
R
F
=500
4
2
0
-2
-4
-6
100K
1M
10M
100M
FREQUENCY (Hz)
NORMALIZ
E
D
GA
IN
(dB)
R
L
=10k
R
L
=150
R
L
=75
A
V
=2
R
F
=1k
C
L
=100pF
V
REF_IN
=1.3V
R
F
=1k
R
L
=150
A
V
=2
4
2
0
-2
-4
-6
100K
1M
10M
100M
FREQUENCY (Hz)
N
O
RMAL
IZED MAGNITUDE (dB)
C
L
=68pF
C
L
=0pF
C
L
=15pF
C
L
=47pF
100
10
1
0.1
10K
100K
1M
100M
FREQUENCY (Hz)
IMPE
D
ANCE (
)
A
V
=1
R
F
=0
10M
90
70
50
30
10
-10
1K
10K
1M
100M
FREQUENCY (Hz)
GAIN (d
B)
0
-45
-90
-135
-180
-270
100K
10M
PHASE (
)
GAIN
R
L
=10k
GAIN
R
L
=150
PHASE
R
L
=10k
PHASE
R
L
=150
10
-10
-30
-50
-70
1K
10K
1M
100M
FREQUENCY (Hz)
PSRR, CMRR
(dB)
10M
100K
CMRR
PSRR
V
S
PSRR
V
SD
EL4501
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