
Note: All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication; however, this data sheet cannot be a “controlled document”. Current revisions, if any, to these
specifications are maintained at the factory and are available upon your request. We recommend checking the revision level before finalization of your design documentation.
2001 Elantec Semiconductor, Inc.
E
L
4
1
0
1
C
-
P
re
lim
in
a
ry
General Description
The EL4101C VFE (Video Front End) is designed to perform the basic
input processing functions in an analog video system as well as provide
analog input processing for digital video systems. The EL4101C VFE
contains a 4:1 MUX input and a DC-restore amplifier. The MUX input
can be used to select which input to use. The DC-restore allows the
input signal to be positioned to the correct voltage level for either ana-
log or digital processing. A buffered output of the MUX selection is
also available for use as a monitor output.
With a 500MHz bandwidth and only 40mA supply current, the
EL4101C is ideal for use in portable and fixed projectors, as well as
HDTV, DTV and other high performance video applications.
The EL4101C is available in the 24-pin QSOP package and is specified
for operation over the full -40°C to +85°C temperature range.
Connection Diagram
Note: Pin #6 should be a good high frequency ground
1
2
3
4
16
15
14
13
5
6
7
12
11
9
8
10
20
19
18
17
24
23
22
21
HOLD
GNDL2
IN0
VS1+
IN1
GNDI
IN2
VS1-
IN3
N.C.
D0
D1
CAP
DCREF
DCFDBK
VFDBK
VOUT
VS2+
VS2-
MOUT
MFDBK
GNDL
PDWN
N.C.
HPULSE
SIG0
+5V
SIG1
SIG2
-5V
SIG3
LOGICD0
LOGICD1
Video Out
RLV=150
Monitor Out
RLM=150
LOGICPD
0.33F
DCV
RGV
RFV
+5V
-5V
RFM
RGM
Features
4:1 multiplexer with monitor out
DC-restore amplifier
±5V operation
500MHz bandwidth
Applications
HDTV/DTV analog inputs
Video projectors
Computer monitors
Set top boxes
Security video
Broadcast video equipment
Ordering Information
Part No.
Package
Tape & Reel
Outline #
EL4101CU
24-Pin QSOP
MDP0040
EL4101C - Preliminary
500MHz Video Front End - 4:1MUX + DC-Restore
A
u
g
u
st
9
,
2
0
1