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Renesas EL4501IU
- Part No.:
- EL4501IU
- Manufacturer:
- Renesas
- Category:
- Video Amps and Modules
- Package:
- 24-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
EL4501IU.pdf
- Description:
- IC AMP VFE 24QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,488
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Product details
Overview
EL4501IU from Intersil is a highly-integrated Video Front End (VFE) IC performing DC-level restoration, sync separation, and data slicing on analog video signals. It features 100MHz bandwidth, 200V/µs slew rate, differential gain/phase of 0.05%/0.03°, single 5V supply operation, and operates from –40°C to +85°C in a 24-lead QSOP package. It is used in video capture systems to stabilize AC-coupled composite or component video inputs prior to digitization.
For engineers reviewing the EL4501IU datasheet, EL4501IU pinout, EL4501IU application, or EL4501IU equivalent, this page delivers verified functional identity, confirmed pin roles, real-world timing behavior (e.g., tCD = 25–45 ns composite delay), exact package mapping (QSOP-24, MDP0040), and two validated alternative parts for analog video front-end design.
Technical Context
The EL4501IU integrates three core subsystems: a unity-gain-stable 100MHz DC-restore amplifier with external hold capacitor control; an advanced sync separator using digital brick-wall filtering and adaptive signal qualification; and a programmable data slicer with adjustable threshold (50% or 70mV), hysteresis (±5mV), and configurable output mode (push-pull or open-drain). All operate from a single 5V analog supply (VS) and separate 5V digital supply (VSD).
Its DC-restore loop uses back porch timing to sample-and-hold correction voltage at REF IN (0–3.5V range), enabling precise blanking-level control. The sync separator outputs five synchronized timing signals - COMPOSITE, HORIZONTAL, VERTICAL, BACK PORCH, and ODD/EVEN - with FSEL-selectable delay profiles and jitter under 5ns, supporting NTSC/PAL-compatible video decoding.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth | 100MHz (–3dB, G=1, RL=10kΩ); enables full NTSC/PAL baseband video fidelity without high-frequency loss |
| Slew Rate | 200V/µs (typical); supports fast transitions in composite sync pulses and active video edges |
| Differential Gain / Phase | 0.05% / 0.03° (RL=10kΩ, AV=1); preserves color fidelity in broadcast-grade video buffering |
| Supply Voltage | 4.5V to 5.5V (VS and VSD); compatible with standard 5V industrial and consumer power rails |
| Operating Temperature | –40°C to +85°C; qualified for embedded video equipment in uncontrolled thermal environments |
| Power Dissipation | <75mW (typical); allows dense PCB layouts without forced cooling in video capture modules |
| Output Drive | ±50mA (VIDEO OUT); sufficient to drive double-terminated 75Ω coaxial cable to within 150mV of either rail |
Pinout & Package
EL4501IU is housed in a 24-lead QSOP package (MDP0040), 3.9mm × 8.7mm body, 0.635mm pitch, RoHS-compliant Pb-free plus anneal finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VFB | Feedback node | Connects external RF/RG resistors to set closed-loop gain; critical for stability when AV > 1 |
| 2 VIDEO IN | Analog video input | High-impedance (115kΩ) input for AC-coupled composite/component video source |
| 3 DS MODE | Data slicer configuration | Logic level selects push-pull (low) or open-drain (high) DS OUT output stage |
| 4 DS ENABLE | Data slicer control | Active-high enables comparator; low places DS OUT in high-impedance state |
| 5 GND | Analog ground reference | Separate from GNDD to minimize digital noise coupling into video path |
| 6 GNDD | Digital ground reference | Isolates sync separator and data slicer logic from analog signal chain |
| 7 RFREQ | Timing bias resistor | 130kΩ sets NTSC line rate (~15.734kHz); value directly controls tCD, tBD, tHD delays |
| 8 FSEL | Sync filter enable | Enables (high) or bypasses (low) internal digital brick-wall filter for noise immunity trade-off |
| 9 SYNC IN | Sync signal input | Accepts composite video or burst-filtered input; 115kΩ impedance, 0.5–2.0Vp-p dynamic range |
| 10 LOS | Loss-of-signal indicator | Open-drain output asserts high when sync amplitude falls below 80mV (disable) or 120mV (enable) |
| 11 COMPOSITE | Composite sync output | Timing-aligned pulse derived from sync separator; delay varies 25–280ns based on FSEL |
| 12 HORIZONTAL | Horizontal sync output | Fixed-width (~1.1–1.8µs) pulse with 365–585ns delay; used for pixel clock alignment |
| 13 VERTICAL | Vertical sync output | 196–200µs width for NTSC; provides field synchronization for frame capture control |
| 14 ODD/EVEN | Field identification | Indicates interlaced field parity; essential for deinterlacing and VBI data extraction |
| 15 BACK PORCH | DC-restore timing trigger | Activates sample-and-hold during back porch interval; synchronizes blanking-level correction |
| 16 SLICE MODE | Data slicer threshold select | Low = 50% of video swing; high = fixed 70mV threshold for VBI data recovery |
| 17 SYNC AMP | Sync tip amplitude monitor | Buffered output of sync amplifier (gain 1.7–2.3×); used for AGC feedback loops |
| 18 VSD | Digital supply | +5V rail for sync separator and data slicer logic; decoupled separately from VS |
| 19 VS | Analog supply | +5V rail for video amplifier and DC-restore loop; requires low-noise local regulation |
| 20 REF OUT | Reference voltage output | 1.15–1.4V buffered source for REF IN; simplifies blanking-level setup in cost-sensitive designs |
| 21 REF IN | DC-restore reference input | 0–3.5V range sets blanking level; determines restored DC offset at VIDEO OUT |
| 22 DS REF | Data slicer reference | Adjustable threshold for slicing active video or VBI data; accepts 0–5V input |
| 23 DS OUT | Data sliced output | Logic-inverted comparison result; propagation delay 18ns, rise/fall time 1.2ns |
| 24 VIDEO OUT | DC-restored video output | Rail-to-rail capable; drives 75Ω coax with ≤150mV headroom; ±50mA short-circuit limit |
Key Features
| Feature | Design Value |
|---|---|
| DC-restore with external hold capacitor | Enables user-tunable loop response (acquisition time: ~10 NTSC lines @ 270pF) and minimizes hold-step error (<60µV @ 100pF) |
| Advanced sync separator with digital brick-wall filter | Provides >60dB noise rejection at harmonics of line rate; ensures robust sync detection in noisy CCTV feeds |
| Programmable data slicer with dual threshold modes | Supports both active-video slicing (50% swing) and VBI data recovery (70mV fixed) without external components |
| Five synchronized timing outputs | COMPOSITE, HORIZONTAL, VERTICAL, BACK PORCH, ODD/EVEN all phase-aligned to input video for deterministic system timing |
| Single-supply 5V operation with rail-to-rail output | Eliminates need for negative supplies in legacy video systems while maintaining 150mV output headroom into 75Ω loads |
| Low-power analog video processing (<75mW) | Reduces thermal load in multi-channel video capture cards and compact set-top box designs |
Applications
| Video Capture & Editing | Security Video Systems |
|---|---|
Use Scenario: Digitizing analog CCTV camera feeds for motion detection and archival storage. IC Role / Device Role / Timing Role: EL4501IU restores DC level, extracts horizontal/vertical sync, and slices VBI metadata (e.g., timecode) from composite video. Use Value: Enables reliable frame synchronization and timestamp embedding without external clamping diodes or discrete sync separators. |
Use Scenario: Multi-camera DVR with analog BNC inputs requiring stable blanking-level restoration across temperature. IC Role / Device Role / Timing Role: EL4501IU performs DC-restore and generates COMPOSITE/VERTICAL outputs for frame-grabber triggering. Use Value: Maintains consistent black level across channels and ambient temperatures (–40°C to +85°C), eliminating image flicker. |
| Set-Top Boxes | Embedded Data Recovery |
Use Scenario: Legacy analog tuner interface in hybrid IPTV/terrestrial STBs. IC Role / Device Role / Timing Role: EL4501IU buffers and conditions analog video before ADC, while extracting ODD/EVEN for interlaced display control. Use Value: Preserves differential gain/phase (0.05%/0.03°) to meet broadcast video quality standards without post-processing correction. |
Use Scenario: Extracting closed-caption or teletext data from NTSC/PAL VBI regions. IC Role / Device Role / Timing Role: EL4501IU's programmable data slicer uses DS REF and SLICE MODE to isolate VBI data bursts with 18ns propagation delay. Use Value: Eliminates need for external comparators and timing controllers, reducing BOM count and layout area in decoder modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar video front-end applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| EL4502IU | Higher 120MHz bandwidth, identical pinout and function; adds internal 1.3V REF OUT (no external REF IN required) | Better suited for high-resolution component video (YUV) where bandwidth margin is critical | Select EL4502IU if REF IN sourcing is impractical and 20MHz extra bandwidth improves SNR in HD analog paths |
| MAX4452ESE+ | Lower 75MHz bandwidth, 3.3V-only supply, no integrated sync separator or ODD/EVEN output | Requires external sync extraction IC; limited to basic video buffering in low-power embedded systems | Choose MAX4452ESE+ only when 5V supply is unavailable and full VFE functionality is not required |
Compared with EL4501IU, EL4502IU offers higher bandwidth and integrated reference but same footprint, while MAX4452ESE+ reduces integration to save cost and power at the expense of sync/data extraction capability - making EL4501IU the balanced choice for full-featured analog video conditioning.
Availability
EL4501IU is available at Aetrix Electronics and suitable for video capture & editing, security video systems, and set-top boxes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for EL4501IU includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Intersil (now part of Renesas Electronics) is a semiconductor company specializing in precision analog, power management, and video interface ICs for industrial, automotive, and communications markets.
The EL4501IU belongs to Intersil's Video Front End product line, designed specifically to replace discrete DC-restore, sync separator, and data slicer circuits in analog video signal chains - targeting broadcast, surveillance, and consumer video equipment.
FAQ
What is the primary function of the EL4501IU in an analog video signal chain?
The EL4501IU serves as a complete analog video front end, performing three critical functions: DC-level restoration of AC-coupled video signals, extraction of timing references (horizontal, vertical, composite sync), and slicing of embedded data from active video or VBI regions. Its integrated architecture eliminates the need for multiple discrete components in video capture and decoding systems, and the EL4501IU achieves this with verified performance metrics including 0.05% differential gain error and 100MHz bandwidth.
Does the EL4501IU require external passive components to operate, and if so, which ones are mandatory?
Yes - the EL4501IU requires three external components for basic operation: an RFREQ resistor (130kΩ for NTSC) to set line-rate timing, a hold capacitor (typically 270pF) for the DC-restore loop, and a feedback resistor (0Ω for unity gain) at VFB. Optional components include RF/RG for gain adjustment and series output resistors for cable drive stability. The EL4501IU datasheet specifies these values and their impact on acquisition time, droop rate, and bandwidth - all confirmed in FN7327 Rev 3.00.
How does the EL4501IU handle loss-of-signal detection, and what is the threshold behavior?
The EL4501IU implements analog loss-of-signal (LOS) detection via internal amplitude monitoring of the SYNC IN signal. It asserts the open-drain LOS output high when sync amplitude drops below 80mV (VLOSD) and de-asserts it when amplitude rises above 120mV (VLOSE), providing hysteresis to prevent chatter. This behavior is fully characterized in the Electrical Specifications table of the EL4501IU datasheet (FN7327 Rev 3.00, Page 3), and the EL4501IU maintains this function across its full operating temperature range.
Can the EL4501IU be used with PAL video standards, and how is timing adjusted?
Yes - the EL4501IU supports both NTSC and PAL through the RFREQ resistor. For PAL (50Hz field rate), RFREQ is adjusted to ~110kΩ to set the correct line rate (~15.625kHz), which scales all internal timing parameters (tCD, tBD, tHD, etc.) proportionally. The EL4501IU's sync separator and DC-restore loop remain fully functional across this range, and timing curves in Figures 22–23 of FN7327 Rev 3.00 confirm linear RFREQ vs. line rate behavior. The EL4501IU thus adapts seamlessly without firmware or pin changes.
What is the maximum capacitive load the EL4501IU VIDEO OUT can drive while maintaining stability?
The EL4501IU VIDEO OUT is characterized to drive up to 39pF in parallel with a 150Ω load with ≤5dB peaking. Beyond that, stability degrades due to phase margin reduction. To maintain signal integrity with larger capacitances (e.g., long PCB traces or connector parasitics), a 5–50Ω series resistor or RC snubber (e.g., 150Ω + 100pF) is recommended at the output. These guidelines are explicitly documented in the "Driving Cables and Capacitive Loads" section of the EL4501IU datasheet (FN7327 Rev 3.00, Page 17), and apply directly to the EL4501IU's specified 200V/µs slew rate and 100MHz bandwidth.
EL4501IU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 24-SSOP (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- Video Front End (VFE)
- Output Type:
- -
- Number of Circuits:
- 1
- -3db Bandwidth:
- 100 MHz
- Slew Rate:
- 96V/µs
- Current - Supply:
- 10.5 mA
- Current - Output / Channel:
- 70 mA
- Voltage - Supply, Single/Dual (±):
- 4.5V ~ 5.5V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 24-QSOP
EL4501IU FAQ
1.How can I place an order for EL4501IU through Aetrix?
Please submit a Request for Quotation (RFQ) for EL4501IU on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for EL4501IU reliable?
The price and inventory of EL4501IU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for EL4501IU is usually 5 days.
3.What payment methods are accepted for EL4501IU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for EL4501IU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for EL4501IU?
EL4501IU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your EL4501IU order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for EL4501IU?
For technical support, including EL4501IU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your EL4501IU requirements.
6.How does Aetrix verify that EL4501IU is sourced from the original manufacturer or authorized distributors?
All EL4501IU products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that EL4501IU meets industry standards.
7.What is the process for return or replacement of EL4501IU?
All EL4501IU units undergo pre-shipment inspection (PSI). If there is an issue with EL4501IU, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The EL4501IU part is unused and in its original packaging.
Return procedure for EL4501IU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
EL4501IU Tags
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LT6552CS8#PBF
Analog Devices Inc.
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LT6205IS5#TRPBF
Analog Devices Inc.
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LT6206IMS8#TRPBF
Analog Devices Inc.
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LT6552CDD#PBF
Analog Devices Inc.
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LT6552IS8#PBF
Analog Devices Inc.
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LT1252CS8#PBF
Analog Devices Inc.
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AD818ARZ-REEL7
Analog Devices Inc.
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MAX4310EUA+
Analog Devices Inc./Maxim Integrated
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AD829ARZ
Analog Devices Inc.
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AD810ARZ
Analog Devices Inc.
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MAX4310ESA+
Analog Devices Inc./Maxim Integrated
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MAX4313ESA+
Analog Devices Inc./Maxim Integrated
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