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Analog Devices Inc./Maxim Integrated MAX7453CSA
- Part No.:
- MAX7453CSA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Video Processing
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX7453CSA.pdf
- Description:
- 3-CH VIDEO RECONSTRUCTION FILTER
- Quantity:
- Payment:
- Shipping:
Inventory:31,105
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Product details
Overview
MAX7453CSA from Maxim Integrated is a triple-channel video reconstruction filter and buffer IC for composite (CVBS) and Y/C (S-video) analog video signal conditioning. It integrates two 2nd-order Sallen-Key lowpass filters with +6dB gain output buffers, delivers -0.27dB (typ) passband flatness up to 4.2MHz, 42dB (typ) stopband attenuation at 27MHz, and supports DC-coupled outputs with <1V blanking level. It is used in set-top boxes, DVD players, and HDRs for NTSC/PAL/SDTV signal reconstruction.
For engineers reviewing the MAX7453CSA datasheet, MAX7453CSA pinout, MAX7453CSA application, or MAX7453CSA equivalent, key selection criteria include its triple-channel architecture (YIN/YOUT, CIN/COUT, CVOUT), 8-pin SO package, single +5V operation, group-delay matching ≤2ns, and compliance with SDTV timing and amplitude fidelity requirements.
Technical Context
The MAX7453CSA implements a maximally flat Butterworth-type reconstruction filter using two cascaded 2nd-order Sallen-Key stages per channel, optimized for NTSC (4.2MHz) and PAL (5.0MHz) baseband bandwidths. Its internal summing node combines YIN and CIN to generate CVOUT, while each output buffer provides fixed +6dB gain and drives standardized video loads (150Ω for YOUT/COUT, 75Ω for CVOUT).
It features a DC-restore clamp loop that sets YOUT/COUT sync-tip level to 0.8V and COUT average DC level to 1.6V, enabling direct DC-coupled output without large external capacitors. The BiCMOS process ensures <0.5% differential gain/phase error and 67dB (min) SNR across 100Hz–50MHz, meeting broadcast-quality analog video fidelity requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | +4.75V to +5.25V - Enables direct integration into standard 5V video subsystems without LDO regulation. |
| Passband Response | -0.27dB (typ) from 100kHz to 4.2MHz - Ensures minimal luma/chroma amplitude distortion in SDTV signals. |
| Stopband Attenuation | 42dB (typ) at 27MHz - Suppresses DAC imaging artifacts and sampling harmonics beyond NTSC/PAL bandwidth. |
| Output Drive Capability | CVOUT drives two 150Ω loads; YOUT/COUT drive one 150Ω load - Supports dual-output routing or legacy 75Ω back-matched cabling. |
| Blanking Level | <1V DC output level - Allows direct DC coupling to downstream video circuitry without AC-blocking capacitors. |
| Group-Delay Matching | ≤2ns between YOUT and COUT channels - Preserves Y/C timing alignment critical for color fidelity in S-video paths. |
| Differential Gain/Phase | 0.5% / 0.5° (max) - Meets EIA-770.1 and ITU-R BT.470 broadcast linearity standards for consumer video. |
Pinout & Package
MAX7453CSA is housed in an 8-pin SOIC (SO) package, 0.150" wide, with exposed pad not present. Pin spacing is 1.27mm (0.050"), body dimensions 4.90mm × 6.00mm × 1.75mm (L × W × H), compliant with JEDEC MS-012.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - YIN | Luma (Y) input | Accepts baseband luma signal (1.2VP-P max); AC-coupled via 0.1µF ceramic capacitor for DC restore operation. |
| 2 - N.C. | No connection | Internally unconnected; must be left floating or tied to GND per layout best practice - no electrical function. |
| 3 - GND | Analog ground reference | Primary return path for all analog signal currents; requires low-impedance PCB plane connection. |
| 4 - CIN | Chroma (C) input | Accepts quadrature-modulated chroma signal (0.9VP-P max); matched impedance and layout critical for Y/C crosstalk <61dB. |
| 5 - COUT | Chroma output | +6dB buffered output driving one 150Ω load; DC-clamped to 1.6V average level for S-video interface compliance. |
| 6 - CVOUT | Composite video output | Internally summed Y+C output; +6dB gain, drives two 150Ω loads or 75Ω back-matched cable with sub-1V blanking. |
| 7 - VCC | +5V power supply | Bypassed with 0.1µF ceramic capacitor close to pin; supplies all three channels and clamp circuitry. |
| 8 - YOUT | Luma output | +6dB buffered output driving one 150Ω load; DC-clamped to 0.8V sync-tip level for precise black-level restoration. |
Key Features
| Feature | Design Value |
|---|---|
| Triple-channel architecture | Independent YIN/YOUT, CIN/COUT, and summed CVOUT paths enable simultaneous S-video and composite output generation from single DAC source. |
| Butterworth filter response | Maximally flat passband (-0.27dB typ) and 42dB stopband attenuation ensure minimal phase/gain ripple in NTSC/PAL baseband. |
| DC-coupled output capability | Internal DC-restore clamp sets YOUT/COUT sync tip to 0.8V and COUT average to 1.6V - eliminates need for bulky output coupling capacitors. |
| Channel-to-channel group-delay matching | ≤2ns deviation between YOUT and COUT ensures precise Y/C timing alignment, preventing color smearing in high-resolution S-video displays. |
| Low differential distortion | 0.5% differential gain and 0.5° differential phase meet broadcast-grade video linearity specs without external calibration. |
Applications
| Set-Top Box Video Output | DVD Player Analog Backend |
|---|---|
|
Use Scenario: Converting digital video DAC outputs to analog CVBS and S-video signals for legacy TV connectivity. IC Role / Device Role / Timing Role: Reconstruction filter and +6dB buffer for Y, C, and composite paths; maintains NTSC/PAL timing integrity and amplitude fidelity. Use Value: Eliminates external passive RC filters and op-amp buffers, reducing BOM count by ≥3 components while meeting EIA-770.1 SNR and linearity specs. |
Use Scenario: Driving composite and S-video outputs from MPEG-2 decoder SoC in consumer DVD players. IC Role / Device Role / Timing Role: Final-stage analog conditioning IC; performs anti-aliasing, gain setting, and DC-level restoration before connector output. Use Value: Enables single-supply 5V design with DC-coupled outputs, removing 220µF electrolytic capacitors and improving long-term reliability. |
| Hard-Disk Recorder (HDR) Playback | Security Camera DVR Front-End |
|
Use Scenario: Reconstructing stored digital video streams into real-time analog outputs for monitoring on analog displays. IC Role / Device Role / Timing Role: Triple-channel reconstruction filter ensuring consistent Y/C delay matching and composite summation accuracy across playback speeds. Use Value: 2ns group-delay matching prevents Y/C misalignment during fast-forward/rewind, preserving color registration in motion video. |
Use Scenario: Conditioning analog video from CCD/CMOS sensors before digitization or local analog display in embedded DVR systems. IC Role / Device Role / Timing Role: Anti-aliasing filter and buffer for sensor ADC interface; also used as clean output driver for analog monitor feed. Use Value: 67dB SNR and 0.3% line-time distortion support 720×480 resolution monitoring without visible noise or geometric artifacts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar video reconstruction filter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX7452CSA | Single-channel version; identical filter topology and specs but only YOUT output - no COUT or CVOUT functionality. | Suitable only for monochrome or CVBS-only systems; cannot support S-video or dual-output architectures. | Select MAX7452CSA only when system requires luma-only reconstruction and board space is constrained. |
| AD828ARZ | General-purpose video op amp (not a dedicated reconstruction filter); requires external RC network for filtering; no internal clamp or CVOUT summing. | Requires ≥4 external components per channel to match MAX7453CSA's integrated function; higher design complexity and layout sensitivity. | Choose AD828ARZ only if custom filter response (e.g., non-Butterworth) or programmable gain is required beyond MAX7453CSA's fixed +6dB. |
Compared with MAX7452CSA and AD828ARZ, the MAX7453CSA uniquely integrates triple-channel filtering, internal Y+C summation, DC clamping, and matched group delay in a single 8-pin SO package - reducing component count, layout area, and validation effort for SDTV video output stages.
Availability
MAX7453CSA is available at Aetrix Electronics and suitable for set-top boxes, DVD players, and hard-disk recorders requiring stable component supply, long-lifecycle availability, and guaranteed traceable sourcing for industrial and consumer video equipment.
Supply support for MAX7453CSA 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
Maxim Integrated (now part of Analog Devices) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.
The MAX7453CSA belongs to Maxim's video signal conditioning product line, designed specifically to replace discrete op-amp + RC filter solutions in cost-sensitive SDTV video output stages while maintaining broadcast-grade fidelity.
FAQ
What is the operating temperature range for the MAX7453CSA?
The MAX7453CSA is specified for commercial temperature operation from 0°C to +70°C. This range aligns with typical ambient conditions inside set-top boxes, DVD players, and personal video recorders where the MAX7453CSA is deployed. The device's thermal design supports continuous operation at +70°C ambient with standard PCB copper pour, and its absolute maximum junction temperature is rated at +150°C.
Does the MAX7453CSA require external passive components for basic operation?
Yes - the MAX7453CSA requires a 0.1µF ceramic capacitor on each input (YIN and CIN) for AC coupling and proper DC-restore loop function, plus a 0.1µF ceramic bypass capacitor on VCC. No external RC filter components are needed, as the reconstruction filters are fully integrated. Output back-matching resistors (75Ω or 150Ω) are external but standard in video interface design.
Can the MAX7453CSA drive a 75Ω video load directly?
Yes - the CVOUT pin is designed to drive a 75Ω load (equivalent to two 150Ω loads in parallel), which matches standard video distribution cabling. YOUT and COUT are specified for 150Ω loads, but can drive 75Ω with reduced swing and potential gain error; for 75Ω-only systems, CVOUT should be used for composite output and YOUT/COUT reserved for S-video where 150Ω termination is standard.
What is the purpose of the N.C. pin (Pin 2) on the MAX7453CSA?
Pin 2 of the MAX7453CSA is a no-connect terminal with no internal connection. It must be left unconnected on the PCB - neither tied to GND nor routed. Maxim specifies this pin as electrically isolated to prevent unintended coupling or parasitic effects; grounding it may degrade crosstalk performance or cause unpredictable behavior in high-frequency video paths.
How does the MAX7453CSA achieve DC-coupled video output without large electrolytic capacitors?
The MAX7453CSA achieves DC-coupled output via an internal DC-restore clamp loop that detects sync pulses on YIN and actively sets YOUT/COUT blanking levels to 0.8V and 1.6V respectively. This eliminates reliance on external 220µF+ electrolytic capacitors, reducing size, cost, and aging-related drift - a key advantage over op-amp-based solutions requiring external clamping networks.
MAX7453CSA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Buffers, Filters
- Applications:
- Consumer Video
- Standards:
- -
- Control Interface:
- -
- Voltage - Supply:
- 4.75V ~ 5.25V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
MAX7453CSA FAQ
1.How can I place an order for MAX7453CSA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX7453CSA 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 MAX7453CSA reliable?
The price and inventory of MAX7453CSA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX7453CSA is usually 5 days.
3.What payment methods are accepted for MAX7453CSA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX7453CSA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX7453CSA?
MAX7453CSA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX7453CSA 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 MAX7453CSA?
For technical support, including MAX7453CSA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX7453CSA requirements.
6.How does Aetrix verify that MAX7453CSA is sourced from the original manufacturer or authorized distributors?
All MAX7453CSA 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 MAX7453CSA meets industry standards.
7.What is the process for return or replacement of MAX7453CSA?
All MAX7453CSA units undergo pre-shipment inspection (PSI). If there is an issue with MAX7453CSA, 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 MAX7453CSA part is unused and in its original packaging.
Return procedure for MAX7453CSA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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