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Analog Devices Inc./Maxim Integrated MAX7462USA+
- Part No.:
- MAX7462USA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Video Processing
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX7462USA+.pdf
- Description:
- IC VIDEO FILTER 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,789
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Product details
Overview
MAX7462USA+ from Maxim Integrated is a single-channel standard-definition CVBS video reconstruction filter and buffer IC with selectable +6dB/+9.5dB gain, output disable control, and 5MHz flat passband (-0.05dB), designed for DAC output smoothing in cable/satellite set-top boxes and DVRs.
For engineers reviewing the MAX7462USA+ datasheet, MAX7462USA+ pinout, MAX7462USA+ application, or MAX7462USA+ equivalent, key selection criteria include its dual-gain configuration, high-impedance disable state, DC-coupled black level <1V, 2VP-P drive capability into dual 150Ω loads, and SO-8 package compatibility with legacy video signal chains.
Technical Context
The MAX7462USA+ integrates a 4th-order Butterworth lowpass filter optimized for NTSC/PAL bandwidths (0–5MHz) and a rail-to-rail output buffer with externally controlled gain switching via the GAIN pin. Its stopband attenuation reaches -43dB at 27MHz to suppress DAC image frequencies.
It operates from a single +5V supply, supports both AC- and DC-coupled outputs, and maintains group delay deviation under 11ns across 100kHz–4.2MHz - critical for maintaining luminance/chrominance timing integrity in SDTV signals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Passband Response | -0.05dB at 5MHz - ensures minimal amplitude distortion across full NTSC/PAL baseband |
| Stopband Attenuation | -43dB at 27MHz - suppresses DAC sampling artifacts without over-filtering |
| Output Gain Options | +6dB or +9.5dB - enables interface with low-output DACs (e.g., 0.7VP-P) while preserving 2VP-P swing |
| Output Drive Capability | 2VP-P into two 150Ω loads - supports dual-video-path routing without external amplification |
| DC-Coupled Black Level | <1V - complies with digital TV interface standards (e.g., EIA/CEA-861) |
| Supply Current | 35mA max at +5V - enables thermal design for dense video processing modules |
| Differential Gain/Phase | 0.15% / 0.15° - preserves color fidelity in composite video transmission |
Pinout & Package
MAX7462USA+ is housed in an 8-pin SO (Small Outline) package per JEDEC MS-012, with 1.27mm pitch, 5.0mm × 4.0mm body, and gull-wing leads. Pin 1 is IN; Pin 2 is GAIN; Pins 3 & 4 are GND; Pin 5 is NC; Pin 6 is DISABLE; Pin 7 is VCC; Pin 8 is OUT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Video Input | AC-coupled analog CVBS input requiring 0.1µF series capacitor for DC restoration |
| 2 (GAIN) | Gain Select Control | Logic-level input: GND = +6dB, VCC = +9.5dB - sets internal buffer gain ratio |
| 3, 4 (GND) | Analog Ground | Dedicated low-impedance return path for filter and buffer stages to minimize noise coupling |
| 5 (N.C.) | No Connection | Internally unconnected; recommended tied to GND for improved EMI performance |
| 6 (DISABLE) | Output Enable/Disable | Active-low control: GND = high-Z output state; VCC = normal buffer operation |
| 7 (VCC) | Power Supply | +5V ±5% input with mandatory 0.1µF ceramic bypass to GND adjacent to pin |
| 8 (OUT) | Buffered Video Output | Capable of driving 75Ω back-matched line or 150Ω DC-coupled load with <1V blanking level |
Key Features
| Feature | Design Value |
|---|---|
| Selectably configurable gain | +6dB/+9.5dB via single logic pin - eliminates need for external gain-setting resistors or DAC reconfiguration |
| High-impedance output disable | Pin-controlled tri-state output - enables multiplexing of multiple video sources onto shared trace or connector |
| DC-coupled video compliance | Output black level <1V - satisfies EIA/CEA-861 and SCART DC-coupling requirements without clamping diodes |
| Low group delay variation | <11ns deviation from 100kHz to 4.2MHz - prevents Y/C timing skew that causes color fringing in composite video |
| Integrated 4th-order Butterworth filter | Optimized cutoff at ~5.5MHz - provides sharp roll-off beyond NTSC/PAL bandwidth while preserving flatness within passband |
Applications
| Cable Set-Top Box Output Stage | Satellite Receiver CVBS Path |
|---|---|
Use Scenario: Final-stage filtering and buffering of DAC-generated CVBS signal before RF modulator or direct RCA output. IC Role / Device Role / Timing Role: Reconstruction filter + driver buffer ensuring NTSC/PAL spectral purity and load drive stability. Use Value: Eliminates post-DAC aliasing and enables clean 2VP-P output into 75Ω coaxial cable with <1V DC offset. | Use Scenario: Conditioning composite video output in multi-tuner satellite receivers supporting simultaneous recording and viewing. IC Role / Device Role / Timing Role: Dual-load driver with disable control allows dynamic routing between tuner outputs and recorder/playback paths. Use Value: High-Z disable state permits seamless source switching without video glitches or load conflicts. |
| Digital Video Recorder Playback | Hard-Disk Recorder Analog Output |
Use Scenario: Reconstructing stored digital video frames into analog CVBS for legacy display interfaces. IC Role / Device Role / Timing Role: Low-distortion buffer maintaining differential gain/phase accuracy during playback scaling and format conversion. Use Value: 0.15% differential gain and 0.15° phase error preserve color saturation and hue fidelity across playback speeds. | Use Scenario: Driving dual analog outputs (e.g., front-panel monitor + rear RCA) from a single DAC channel in HDD-based PVRs. IC Role / Device Role / Timing Role: Dual-150Ω load driver enabling split-path distribution without signal degradation. Use Value: 2VP-P output swing into two parallel loads avoids need for active splitters or additional op-amps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar video reconstruction filter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX7463USA+ | Fixed +6dB gain; no GAIN or DISABLE pins - 6-pin functional subset in same SO-8 package | Lacks multiplexing capability and DAC output flexibility; suited for cost-sensitive fixed-gain designs | Select MAX7463USA+ only when gain and disable functions are unnecessary and BOM simplification is prioritized |
| AD828ARZ | General-purpose video op-amp (no integrated filter); requires external RC network for reconstruction; higher supply current (10mA/channel) | Requires discrete filter design and layout tuning; not drop-in compatible for anti-aliasing function | Choose AD828ARZ only when custom filter response or wideband (>10MHz) support is required beyond SDTV scope |
Compared with MAX7463USA+ and AD828ARZ, the MAX7462USA+ uniquely delivers integrated 4th-order filtering, selectable gain, and output disable in a single SO-8 package - reducing component count, layout area, and validation effort for standard-definition video output stages.
Availability
MAX7462USA+ is available at Aetrix Electronics and suitable for cable/satellite set-top boxes, digital video recorders, and hard-disk recorders requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX7462USA+ 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 precision analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX7462USA+ belongs to Maxim's video signal conditioning product line, engineered specifically for SDTV analog video reconstruction in space-constrained, cost-sensitive consumer electronics with strict EMI and timing integrity requirements.
FAQ
What is the primary function of the MAX7462USA+ in a video signal chain?
The MAX7462USA+ serves as a combined reconstruction filter and output buffer for standard-definition CVBS video signals. It removes DAC imaging artifacts above 5MHz using its integrated 4th-order Butterworth filter and drives two 150Ω loads with precise gain control and black-level stability. In systems like set-top boxes, the MAX7462USA+ sits directly after the video DAC to ensure compliant, low-distortion analog output.
How does the GAIN pin on the MAX7462USA+ affect system design?
The GAIN pin on the MAX7462USA+ selects between +6dB and +9.5dB output gain by connecting to GND or VCC, respectively. This allows designers to match the MAX7462USA+ to DACs with varying output amplitudes - for example, a 0.7VP-P DAC can be amplified to full 2VP-P swing using +9.5dB mode, eliminating the need for external gain stages and simplifying signal chain calibration.
Can the MAX7462USA+ drive DC-coupled video loads, and what is the maximum allowable DC offset?
Yes, the MAX7462USA+ supports DC-coupled video loads with an output black level less than 1V, meeting EIA/CEA-861 and SCART standards. This eliminates the need for large AC-coupling capacitors at the output and enables direct connection to displays or downstream circuitry requiring DC continuity. The MAX7462USA+ maintains this specification across its full 0°C to +85°C operating range.
What is the purpose of the DISABLE pin on the MAX7462USA+, and how is it used in practice?
The DISABLE pin on the MAX7462USA+ places the output buffer in a high-impedance state when pulled to GND, enabling multiplexing of multiple video sources onto a shared output path. In DVRs or multi-tuner receivers, this allows clean switching between live TV and playback signals without video glitches or loading conflicts - a feature absent in the pin-compatible but functionally reduced MAX7463USA+.
Does the MAX7462USA+ require external passive components for basic operation, and if so, which ones?
Yes, the MAX7462USA+ requires three essential external components: a 0.1µF ceramic capacitor on the IN pin for AC coupling, a 0.1µF ceramic capacitor from VCC to GND for supply bypassing, and a minimum 220µF capacitor on the OUT pin for AC-coupled loads. These values are specified in the datasheet to ensure proper DC restoration, power integrity, and low-frequency response - omitting any compromises video quality or stability.
MAX7462USA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Buffers, Filters
- Applications:
- Recorders, Set-Top Boxes
- Standards:
- -
- Control Interface:
- -
- Voltage - Supply:
- 4.75V ~ 5.25V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
MAX7462USA+ FAQ
1.How can I place an order for MAX7462USA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX7462USA+ 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 MAX7462USA+ reliable?
The price and inventory of MAX7462USA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX7462USA+ is usually 5 days.
3.What payment methods are accepted for MAX7462USA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX7462USA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX7462USA+?
MAX7462USA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX7462USA+ 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 MAX7462USA+?
For technical support, including MAX7462USA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX7462USA+ requirements.
6.How does Aetrix verify that MAX7462USA+ is sourced from the original manufacturer or authorized distributors?
All MAX7462USA+ 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 MAX7462USA+ meets industry standards.
7.What is the process for return or replacement of MAX7462USA+?
All MAX7462USA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX7462USA+, 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 MAX7462USA+ part is unused and in its original packaging.
Return procedure for MAX7462USA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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