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Part: EL4501C
Category:
Description: Video Front End
Company: Elantec Semiconductor, Inc. (acquired by Intersil)
Datasheet: Download EL4501C datasheet File size : 7 kB
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EL4101C - Preliminary
EL4101C - Preliminary
500MHz Video Front End - 4:1MUX + DC-Restore
Features
· · · · 4:1 multiplexer with monitor out DC-restore amplifier ±5V operation 500MHz bandwidth
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 analog or digital processing. A buffered output of the MUX selection is also available for use as a monitor output. W i t h 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.
Applications
· · · · · · HDTV/DTV analog inputs Video projectors Computer monitors Set top boxes Security video Broadcast video equipment
Ordering Information
Part No. EL4101CU Package 24-Pin QSOP Tape & Reel Outline # MDP0040
Connection Diagram
HPULSE 1 HOLD 2 GNDL2 SIG0 3 IN0 +5V SIG1 5 IN1 6 GNDI SIG2 7 IN2 -5V SIG3 9 IN3 10 N.C. LOGICD0 LOGICD1 11 D0 12 D1 MFDBK 16 GNDL 15 PDWN 14 N.C. 13 LOGICPD 8 VS1VS2- 18 MOUT 17 -5V R FM RGM VOUT 20 VS2+ 19 +5V 4 VS1+ DCFDBK 22 VFDBK 21 RFV Video Out RLV=150 Monitor Out RLM=150 RG V CAP 24 DCREF 23 DCV 0.33µF
November 29, 2001
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.
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 = 150, CLV = CLM = 3p, CH = 0.33n, GAIN = 2. Parameter Supply IS 1 + IS IS 2 + IS 1 S + IS S IS 2 S + Input IB IB O VI H VI L II L II H tSH Output VO S M VO S VO S VOH VOL IS C SR SRM OS OSM tS tSM VR E F tSD VO H S VO S B IC C L ID C Output Offset Voltage - Monitor DC-restore Offset Voltage Output Offset Voltage Drift - Video Output Voltage Swing, Pos. Output Voltage Swing, Neg. Output Short Circuit Current Slew Rate - Video Out (20%-80%) Slew Rate - Monitor Out (20%-80%) Output Overshoot, Video Output Overshoot, Monitor Settling Time to 1%, Video Settling Time to 1%, Monitor DC-restore -Reference Voltage Range DC-restore - Settling Time to 1% DC-restore - Video Output Hold Step DC-restore - Offset vs. Black Level DC-restore - Charge Current Limit, ICAP DC-restore - Droop Current, ICAP VIN = -2V to +2V Sample mode on S - H transition Sample mode on Sample mode on Hold mode on -1 210 -30 -2 VIN = 0V Auto-zero on, DCREF = 0 Auto-zero on AV = +1, monitor & video outputs AV = +1, monitor & video outputs RL = 10, source or sink VOUT = 4VP-P VOUT = 4VP-P VOUT = 1VP-P VOUT = 1VP-P Hold mode 3.44 -3.43 65 1000 1250 -400 -5 18 TBD 3.5 -3.5 100 2100 2100 TBD TBD 10 10 2.5 -0.5 -0.6 260 1 345 30 2 140 4500 3900 420 5 mV mV µV/°C V V mA V/µs V/µs % % ns ns V µs mV mV/V µA nA Input Bias Current Input Bias Current Drift with Temp. Input High Voltage Input Low Voltage Low Input Current for D0, D1, PDWN, HOLD High Input Current for D0, D1, PDWN, HOLD Sample and Hold Delay Time VIN = 0V VIN =5V 25 0 48 12 VIN = 0V VIN = 0V 2 0.8 75 10 -22.4 -2.2 TBD 6.1 µA nA/°C V V µA µA ns Positive Supply Current 1 Negative Supply Current Positive Supply Current 2 Positive Supply Current 1 in Standby Negative Supply Current in Standby Positive Supply Current 2 in Standby VIN = 0, I L = 0 Standby Standby Standby 25 38 15 3.8 2 236 mA mA mA mA mA µA Parameter Description Conditions Min Typ Max Unit
AC Performance
2
EL4101C - Preliminary
EL4101C - Preliminary
500MHz Video Front End - 4:1MUX + DC-Restore
Electrical Characteristics
VS1+ = VS2+ = 5V, VS1- = V S2- = -5V, RFV = RGV = RFM = RGM =375, R LV = RLM = 150, CLV = CLM = 3p, CH = 0.33n, GAIN = 2. Parameter BW BWM 0.1BW 0.1BWM Vp Vpm dP dG dPM dPG en en m Parameter Description 3dB Bandwidth, Video Out 3dB Bandwidth, Monitor Out ±0.1dB Flat Bandwidth, Video Out ±0.1dB Flat Bandwidth, Monitor Out Peaking, Video Peaking, Monitor Diff. Phase @3.58MHz, Video Diff. Gain @3.58MHz, Video Diff. Phase @3.58MHz, Monitor Diff. Gain @3.58MHz, Monitor Noise Voltage at Input for VOUT Noise Voltage at Input for MOUT Crosstalk [1] @10MHz Crosstalk [1] @100MHz 3 channel hostile 3 channel hostile Conditions Min Typ 500 1000 25 18 2.4 4.5 TBD TBD TBD TBD TBD TBD -45 -20 Max Unit MHz MHz MHz MHz dB dB ° % ° % nV/Hz nV/Hz dB 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 0 0 0 0 1 D1 0 0 1 1 X D0 0 1 0 1 X State IN0 Selected IN1 Selected IN2 Selected IN3 Selected Standby - Powered Down
3
EL4101C - Preliminary
EL4101C - Preliminary
500MHz Video Front End - 4:1MUX + DC-Restore
Pin Descriptions
Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 PDWN GNDL MFDBK MOUT VS2VS2+ VOUT VFDBK DCFDBK DCREF CAP Logic Input Logic Ground High Frequency Signal High Frequency Signal Power Power High Frequency Signal High Frequency Signal Analog Signal Analog Signal Analog Signal D0 D1 Logic Input Logic Input Pin Name HOLD GNDL2 IN0 VS1+ IN1 GNDI IN2 VS1IN3 Pin Type Logic Input Logic Ground High Frequency Signal Power High Frequency Signal Analog Signal High Frequency Signal Power High Frequency Signal Hold pulse for DC-restore function 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 Parallel control bit #0 Parallel control bit #1 No connection Power down input to put chip in low current standby mode Logic ground for D0, D1, PWDN buffers Monitor amplifier feedback Monitor amplifier output Negative power pin for heavy, pulsatile supply currents Positive power pin for heavy, pulsatile supply currents Video amplifier output Video amplifier feedback Input to sample circuit Reference DC voltage representing black level Sample storage capacitor for DC-restore circuit Pin Description
4
EL4101C - Preliminary
EL4101C - Preliminary
500MHz Video Front End - 4:1MUX + DC-Restore
Typical Performance Curves
Frequency Response vs R F Video Output AV=1 RL=150 RF=562 0 -4 -8 -12 100k RF=750 Frequency Response vs RF Monitor Output AV=1 RL=150 RF=562 0 -4 -8 -12 100k RF=750
8 4
8 RF=375 4
Normalized Magnitude (dB)
1M
10M Frequency (Hz)
100M
1G
Normalized Magnitude (dB)
RF=375
1M
10M Frequency (Hz)
100M
1G
8 4 0 -4 -8
Frequency Response vs R F Video Output AV=2 RL=150 VS=±5V RF=562
8 RF=375 4 0 -4 -8
Frequency Response vs RL Monitor Output AV=2 RL=150 VS=±5V RF=562
Normalized Magnitude (dB)
RF=750
Normalized Magnitude (dB)
RF=375
RF=750
-12 100k
1M
10M Frequency (Hz)
100M
1G
-12 100k
1M
10M Frequency (Hz)
100M
1G
8 4 0
Frequency Response vs R L Video Output AV=2 RF=RG=375
8 RL=500 4 0
Frequency Response vs RL Monitor Output AV=2 RF=RG=375
Normalized Magnitude (dB)
RL=70 -4 -8 -12 100k RL=150
Normalized Magnitude (dB)
RL=500
RL=70 -4 -8 -12 100k RL=150
1M
10M Frequency (Hz)
100M
1G
1M
10M Frequency (Hz)
100M
1G
5
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