ELANT EL4102CU Datasheet
C
EL4102C - Preliminary
500MHz Video Front End: 4-1 MUX, VGA & DC-Restore
EL4102C - Preliminary
Features
• 4:1 multiplexer with monitor out
• 18dB variable gain amplifier
• DC-restore amplifier
• Digital control serial interface
• ±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 #
EL4102CU 24-Pin QSOP MDP0040
General Description
The EL4102C VFE (Vi deo Front End) is de signed to perform all of the
input processing functions in an analog video system as well as provide
analog input processing for digital video systems. The EL4102C VFE
contains a 4:1 MUX input, a DC-restore amplifier and a variable gain
amplifier. The MUX input can be used to select which input to use. In a
digital system, the DC-restore and variable gain amplifiers allow the
input signal to be positioned and scaled to give optimum A-to-D conversions results. In an analog system these perform the brightnes s and
contrast operations. A buffered output of the MUX selection is also
available for use as a monitor output.
With a 500MHz bandwi dth and only 50mA supply cur rent, the
EL4102C is ideal for use in portable and fixed projectors, as well as
HDTV, DTV and other high performance vid e o ap plications.
A 3-wire digital interface enables full control of the input selection, as
well as 0 to -18dB of gain and blanking operations.
The EL4102C is availabl e in t he QSOP24 pac kage a nd is spec ified for
operation over the -40°C to +85°C temperature ran ge.
onnection Diagram
SAMPLE PULSE
V
I/P0
V
I/P1
V
I/P2
V
I/P3
+5V
1
HOLD
2
GNDL2
3
IN0
4
VS1+
5
IN1
6
0V
GNDI
7
IN2
8
-5V
VS-
9
IN3
CAP
DCREF
DCFDBK
VFDBK
VOUT
VS2+
VS-
MOUT
MFDBK
24
23
DCV
22
21
20
19
+5V
18
-5V
17
16
C
H
0.33nF
R
GV
R
FV
Video Out
RL=150Ω
Monitor Out
R
RL=150Ω
FM
R
GM
August 30, 2001
10
ENB
SDI
SCLK
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 . W e recommend checking the revision level befo re finalization of your design documentation.
© 2001 Elantec Semiconductor, Inc.
ENB
11
SDI
12
SCLK
GNDL
PDWN
SDO
15
14
PDWN
13
DATAOUT
EL4102C - Preliminary
500MHz Video Front End: 4-1 MUX, VGA & DC-Restore
Absolute Maximum Ratings (T
Values beyond absolute maximum ratings can cause the device to be prematurely damaged. Absolute maximum ratings are stress ratings only
and functional device operation is not implied.
Supply Voltage (V
EL4102C - Preliminary
Input Voltage V
to VS-) 11V
S+
= 25°C)
A
- - 0.3V, VS+ +0.3V
S
Storage Temperature Range -65°C to +150°C
Ambient operating Temperature -40°C to +85°C
Operating Junction Temperature 125°C
Power Dissipation See Curves
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
= TC = TA.
J
Electrical Characteristics
VS1+ = VS2+ = 5V, VS1- = VS2- = -5V, RFV = RFG = 750, RGV = RGM = O.C., AV = 1, RLV = RLM = 150Ω, CLV = CLM = 3p, CH = 0.33n, GAIN = 1.
Parameter Description Conditions Min Typ Max Unit
Supply
I
+ Positive Supply Current 1 35 mA
S1
I
- Negative Supply Current VIN = 0, IL = 0 45 mA
S
I
+ Positive Supply Current 2 VIN = 0, IL = 0 141520mA
S2
I
+ Positive Supply Current 1 in Standby Standby 3.8 5 7.3 mA
S1S
I
- Negative Supply Current in Standby Standby 0.57 1 1.3 mA
SS
I
+ Positive Supply Current 2 in Standby Standby -10 - 10 µ A
S2S
V
+, VS2+ Positive Supply Voltage 4.5 5.0 5.5 V
S1
V
- Negative Supply Voltage -4.5 -5.0 -5.5 V
S
Input
Ib Input Bias Current V
Ibo Input Bias Current Drift with Temp. V
V
IH
V
IL
V
IP
V
IN
I
IDL
I
IDH
I
IL
I
IH
Input High Voltage 2V Input Low Voltage 0.8 V Input V oltage Swing, Pos. Saturated Input, Att. code = 01010 3.35 3.5 V Input V oltage Swing, Neg. Saturated Input, Att. code = 01010 -3.5 -3.39 V Low Input Current for SCLK and ENB VIN = 0V 50 85 150 µA High Input Current for SCLK and ENB VIN =5V 0 0.1 10 µ A Low Input Current for SDI, PDWN, HOLD VIN = 0V 15 48 75 µA
High Input Current for SDI, PDWN, HOLD VIN =5V 0 0.1 10 µ A
tsh Sample and Hold Delay Time 15 ns
tsu Data Set Up Time TBD 10 TBD ns
th Data Hold Time TBD 10 TBD ns
fclk Serial Clock Rate TBD 5 MHz
tsue Enable Set Up Time TBD 10 ns
the Enable Hold Time TBD 10 ns
tpd Clock to Data Output Delay C
Output
V
OSM
V
OS
T
CVOS
V
+ Output Voltage Swing, Pos. Attenuator = 0dB, Monitor & Video Outputs 3.44 3.5 V
O
V
- Output Voltage Swing, Neg. Attenuator = 0dB, Monitor & Video Outputs -3.5 -3.43 V
O
V
SDO
V
SDO
Output Offset Voltage - Monitor VIN = 0V -400 30 420 mV
DC-restore Offset Voltage auto-zero on, DC
Output Offset Voltage Drift - Video auto-zero on 15 µV/°C
high Serial Data Output High IL = +1mA 4.7 V low Serial Data Output Low IL = -1mA 0.25 V
= 0V -22.4 -2.2 6.1 µA
IN
= 0V TBD nA/°C
IN
= 10pF TBD 21 ns
L
= 0 -5 - 5 mV
REF
2
EL4102C - Preliminary
500MHz Video Front End: 4-1 MUX, VGA & DC-Restore
Electrical Characteristics
VS1+ = VS2+ = 5V, VS1- = VS2- = -5V, RFV = RFG = 750, RGV = RGM = O.C., AV = 1, RLV = RLM = 150Ω, CLV = CLM = 3p, CH = 0.33n, GAIN = 1.
Parameter Description Conditions Min Typ Max Unit
I
SC
AC Performance
SR Slew Rate - Video Out (20%-80%) V
SRM Slew Rate - Monitor Out (20%-80%) V
OS Output Overshoot, Video V
OSM Output Overshoot, Monitor V
ts Settling Time to 1%, Video Hold Mode TBD ns
tsm Settling Time to 1%, Monitor TBD ns
V
REF
tsd DC-restore - Settling Time to 1% Sample Mode On 1.2 µS
V
OHS
V
OSB
I
CCL
I
DC
BW 3dB Bandwidth, Video Out Attenuator = 00000 TBD MHz
BWM 3dB Bandwidth, Monitor Out TBD MHz
0.1BW ±0.1dB Flat Bandwidth, Video Out Attenuator = 00000 TBD MHz
0.1BWM ±0.1dB Flat Bandwidth, Monitor Out TBD MHz
Vp Peaking, Video TBD dB
Vpm Peaking, Monitor TBD dB
dP Diff. Phase @3.58MHz, Video TBD °
dG Diff. Gain @3.58MHz, Video TBD %
dPM Diff. Phase @3.58MHz, Monitor TBD °
dPG Diff. Gain @3.58MHz, Monitor TBD %
e
n
e
nm
1. Total unwanted output normalized by wanted (or expected) output; add -10dB to get channel-to-channel isolation
Output Short Circuit Current RL = 10Ω, Source or Sink 65 100 mA
= 4V
OUT
P-P
= 4V
OUT
P-P
= 1V
OUT
P-P
= 1V
OUT
P-P
DC-restore Reference Voltage Range VIN = -2V to +2V -2 - 2 V
DC-restore - Video Output Hold Step S - H Transition -1.1 mV DC-restore - Offset vs. Black Level Sample Mode On -1 -0.6 1 mV/V DC-restore - Charge Current Limit, I DC-restore - Droop Current, I
Noise Voltage at Input for V
Noise Voltage at Input for M
[1]
Crosstalk Crosstalk Attenuator Range - 18.2 - dB Attenuator Step Size 31 Steps - 0.58 - dB Relative Attenuation Error Between any 2 levels 0 - ±0.2 dB
@10MHz 3 channel hostile -45 dB
[1]
@100MHz 3 channel hostile -20 dB
CAP
CAP
OUT
OUT
Sample Mode On 260 µ A
Hold Mode On -30 - 30 nA
1000 2100 4500 V/µS 1250 2100 3900 V/µS
TBD %
TBD %
TBD nV/√Hz
TBD nV/√Hz
EL4102C - Preliminary
3
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