Elantec EL4101C 500mhz video front end - 4:1mux dc-restore Datasheet

500MHz Video Front End - 4:1MUX + DC-Restore
Features
General Description
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•
•
•
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 analog or digital processing. A buffered output of the MUX selection is
also available for use as a monitor output.
4:1 multiplexer with monitor out
DC-restore amplifier
±5V operation
500MHz bandwidth
Applications
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•
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HDTV/DTV analog inputs
Video projectors
Computer monitors
Set top boxes
Security video
Broadcast video equipment
EL4101C - Preliminary
EL4101C - Preliminary
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.
Ordering Information
Part No.
EL4101CU
Package
24-Pin QSOP
Tape & Reel
Outline #
MDP0040
Connection Diagram
HPULSE
1 HOLD
2 GNDL2
CAP 24
DCREF 23
0.33µF
DCV
SIG0
3 IN0
+5V
4 VS1+
DCFDBK 22
RGV
VFDBK 21
SIG1
RFV
5 IN1
VOUT 20
6 GNDI
VS2+ 19
+5V
Video Out
RLV=150Ω
7 IN2
VS2- 18
-5V
Monitor Out
RLM=150Ω
SIG2
-5V
8 VS1-
MOUT 17
9 IN3
MFDBK 16
RFM
SIG3
GNDL 15
LOGICD0
11 D0
PDWN 14
LOGICD1
12 D1
N.C. 13
LOGICPD
Note: Pin #6 should be a good high frequency ground
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.
August 9, 2001
10 N.C.
RGM
EL4101C - Preliminary
EL4101C - Preliminary
500MHz Video Front End - 4:1MUX + DC-Restore
Absolute Maximum Ratings (T
A
= 25°C)
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 (VS+ to VS-)
11V
Input Voltage
VS- - 0.3V, VS+ +0.3V
Storage Temperature Range
Ambient operating Temperature
Operating Junction Temperature
Power Dissipation
-65°C to +150°C
-40°C to +85°C
125°C
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: TJ = TC = TA.
Electrical Characteristics
VS1+ = VS2+ = 5V, VS1- = V S2- = -5V, RFV = RGV = RFM = RGM =375, R LV = RLM = 150Ω, CLV = CLM = 3p, CH = 0.33n, GAIN = 2.
Parameter
Parameter Description
Conditions
Min
Typ
Max
Unit
Supply
IS1+
Positive Supply Current 1
25
mA
IS -
Negative Supply Current
38
mA
IS2+
Positive Supply Current 2
VIN = 0, I L = 0
15
mA
IS1S+
Positive Supply Current 1 in Standby
Standby
3.8
mA
ISS-
Negative Supply Current in Standby
Standby
2
mA
IS2S+
Positive Supply Current 2 in Standby
Standby
236
µA
IB
Input Bias Current
VIN = 0V
IBO
Input Bias Current Drift with Temp.
VIN = 0V
VIH
Input High Voltage
VIL
Input Low Voltage
IIL
Low Input Current for D0, D1, PDWN, HOLD
VIN = 0V
25
IIH
High Input Current for D0, D1, PDWN, HOLD
VIN =5V
0
tSH
Sample and Hold Delay Time
Input
-22.4
-2.2
6.1
TBD
µA
nA/°C
2
V
0.8
V
48
75
µA
-
10
µA
12
ns
Output
VOSM
Output Offset Voltage - Monitor
VIN = 0V
VOS
DC-restore Offset Voltage
Auto-zero on, DCREF = 0
-400
18
420
-5
-
5
mV
δVOS
Output Offset Voltage Drift - Video
Auto-zero on
VOH
Output Voltage Swing, Pos.
AV = +1, monitor & video outputs
VOL
Output Voltage Swing, Neg.
AV = +1, monitor & video outputs
ISC
Output Short Circuit Current
RL = 10Ω, source or sink
65
100
140
mA
mV
TBD
µV/°C
3.44
3.5
V
-3.43
-3.5
V
AC Performance
SR
Slew Rate - Video Out (20%-80%)
VOUT = 4VP-P
1000
2100
4500
V/µs
SRM
Slew Rate - Monitor Out (20%-80%)
VOUT = 4VP-P
1250
2100
3900
V/µs
OS
Output Overshoot, Video
VOUT = 1VP-P
TBD
OSM
Output Overshoot, Monitor
VOUT = 1VP-P
TBD
%
tS
Settling Time to 1%, Video
Hold mode
10
ns
tSM
Settling Time to 1%, Monitor
VREF
DC-restore -Reference Voltage Range
VIN = -2V to +2V
tSD
DC-restore - Settling Time to 1%
Sample mode on
VOHS
DC-restore - Video Output Hold Step
S - H transition
VOSB
DC-restore - Offset vs. Black Level
Sample mode on
-1
-0.6
1
mV/V
ICCL
DC-restore - Charge Current Limit, ICAP
Sample mode on
210
260
345
µA
IDC
DC-restore - Droop Current, ICAP
Hold mode on
-30
-
30
nA
%
10
2
-2
-
ns
2
2.5
V
µs
-0.5
mV
Electrical Characteristics
VS1+ = VS2+ = 5V, VS1- = V S2- = -5V, RFV = RGV = RFM = RGM =375, R LV = RLM = 150Ω, CLV = CLM = 3p, CH = 0.33n, GAIN = 2.
Parameter
Parameter Description
Conditions
Min
Typ
Max
Unit
BW
3dB Bandwidth, Video Out
500
MHz
BWM
3dB Bandwidth, Monitor Out
1000
MHz
0.1BW
±0.1dB Flat Bandwidth, Video Out
25
MHz
0.1BWM
±0.1dB Flat Bandwidth, Monitor Out
18
MHz
Vp
Peaking, Video
2.4
dB
Vpm
Peaking, Monitor
4.5
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
%
en
Noise Voltage at Input for VOUT
TBD
nV/√Hz
enm
Noise Voltage at Input for MOUT
TBD
nV/√Hz
Crosstalk [1] @10MHz
3 channel hostile
-45
dB
Crosstalk [1] @100MHz
3 channel hostile
-20
dB
1. Total unwanted output normalized by wanted (or expected) output; add -10dB to get channel-to-channel isolation
Parallel Programming Truth Table
Inputs
PDWN
D1
State
D0
0
0
0
IN0 Selected
0
0
1
IN1 Selected
0
1
0
IN2 Selected
0
1
1
IN3 Selected
1
X
X
Standby - Powered Down
3
EL4101C - Preliminary
EL4101C - Preliminary
500MHz Video Front End - 4:1MUX + DC-Restore
EL4101C - Preliminary
EL4101C - Preliminary
500MHz Video Front End - 4:1MUX + DC-Restore
Pin Descriptions
Pin Number
Pin Name
Pin Type
1
HOLD
Logic Input
Pin Description
Hold pulse for DC-restore function
2
GNDL2
Logic Ground
3
IN0
High Frequency Signal
4
VS1+
Power
5
IN1
High Frequency Signal
6
GNDI
Analog Signal
7
IN2
High Frequency Signal
8
VS1-
Power
9
IN3
High Frequency Signal
11
D0
Logic Input
Parallel control bit #0
12
D1
Logic Input
Parallel control bit #1
14
PDWN
Logic Input
15
GNDL
Logic Ground
16
MFDBK
High Frequency Signal
Monitor amplifier feedback
17
MOUT
High Frequency Signal
Monitor amplifier output
18
VS2-
Power
Negative power pin for heavy, pulsatile supply currents
19
VS2+
Power
Positive power pin for heavy, pulsatile supply currents
20
VOUT
High Frequency Signal
Video amplifier output
21
VFDBK
High Frequency Signal
Video amplifier feedback
22
DCFDBK
Analog Signal
Input to sample circuit
23
DCREF
Analog Signal
Reference DC voltage representing black level
24
CAP
Analog Signal
Sample storage capacitor for DC-restore circuit
10
Logic ground for “hold” buffer
Video input #0
Positive power pin for quiet supply currents
Video input #1
Reference voltage for attenuation function
Video input #2
Negative power pin for quiet supply currents
Video input #3
No connection
13
No connection
Power down input to put chip in low current standby mode
Logic ground for D0, D1, PWDN buffers
4
Block Diagram (Gain of 1)
V S+
Input Video
Input Video
MFDBK
750Ω
+
IN0
MOUT
+
-
IN1
VOUT
750Ω
VFDBK
Input Video
Input Video
IN2
+
-
DCFDBK
DCREF
HOLD
IN3
CAP
D0
CH
D1
GNDL
GND
GNDL2
5
VS-
PDWN
EL4101C - Preliminary
EL4101C - Preliminary
500MHz Video Front End - 4:1MUX + DC-Restore
EL4101C - Preliminary
EL4101C - Preliminary
500MHz Video Front End - 4:1MUX + DC-Restore
General Disclaimer
Specifications contained in this data sheet are in effect as of the publication date shown. Elantec, Inc. reserves the right to make changes in the circuitry or specifications contained herein at any time without notice. Elantec, Inc. assumes no responsibility for the use of any circuits described
herein and makes no representations that they are free from patent infringement.
August 9, 2001
WARNING - Life Support Policy
Elantec, Inc. products are not authorized for and should not be used
within Life Support Systems without the specific written consent of
Elantec, Inc. Life Support systems are equipment intended to support or sustain life and whose failure to perform when properly used
in accordance with instructions provided can be reasonably
expected to result in significant personal injury or death. Users contemplating application of Elantec, Inc. Products in Life Support
Systems are requested to contact Elantec, Inc. factory headquarters
to establish suitable terms & conditions for these applications. Elantec, Inc.’s warranty is limited to replacement of defective
components and does not cover injury to persons or property or
other consequential damages.
Elantec Semiconductor, Inc.
675 Trade Zone Blvd.
Milpitas, CA 95035
Telephone: (408) 945-1323
(888) ELANTEC
Fax:
(408) 945-9305
European Office: 44-118-977-6020
Japan Technical Center: 81-45-682-5820
6
Printed in U.S.A.
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