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Analog Devices Inc./Maxim Integrated MAX4121CSA
- Part No.:
- MAX4121CSA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4121CSA.pdf
- Description:
- IC BLDNG BLK CRSSPT 330MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:357
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Product details
Overview
MAX4121CSA from Maxim Integrated is a single-pole double-throw (SPDT), 2-input, single-output buffered video switch optimized for broadcast-quality composite and RGB video routing. It delivers -3dB bandwidth of 330MHz, 0.1dB gain flatness to 150MHz, and ultra-low switching glitch of 13mVp-p, enabling high-fidelity signal path selection in HDTV and NTSC/PAL systems.
For engineers reviewing the MAX4121CSA datasheet, MAX4121CSA pinout, MAX4121CSA application, or MAX4121CSA equivalent, key selection criteria include differential phase/gain error (0.01°/0.01%), off-isolation (-78dB at 30MHz), crosstalk (-92dB), high-Z disable state, and ±5V dual-supply operation with 5.5mA max supply current.
Technical Context
The MAX4121CSA employs an open-loop buffer architecture with complementary bipolar process technology, enabling stable driving of capacitive loads without oscillation. Its make-before-break switching minimizes transient artifacts, and the positive-polarity 13mV glitch avoids interference with negative sync pulses in video timing.
It features constant high input impedance (100MΩ), low input capacitance (3pF), and on-board digital control logic with EN/A0 inputs. The device operates across 0°C to +70°C and supports transparent digital input behavior-no internal latching-ensuring deterministic channel selection timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| -3dB Bandwidth | 330MHz - supports full HD and analog video baseband signals without attenuation |
| 0.1dB Gain Flatness | to 150MHz - preserves color fidelity and luminance integrity across NTSC/PAL/SECAM spectra |
| Differential Phase/Gain Error | 0.01°/0.01% - meets broadcast-grade video timing accuracy requirements |
| Off Isolation | -78dB at 30MHz - prevents leakage between unselected video sources in dense routing arrays |
| Crosstalk | -92dB - ensures minimal signal coupling between adjacent channels in multi-source systems |
| Switching Glitch | 13mVp-p, positive polarity - avoids misinterpretation as sync pulse in composite video waveforms |
| Supply Current (Active) | 5.5mA max - enables low-power video array scaling without thermal derating |
| Disabled Supply Current | 250µA - reduces power in standby mode while maintaining fast wake-up capability |
Pinout & Package
MAX4121CSA is housed in an 8-pin narrow SO package (SOIC-N, 150-mil width), with dimensions 4.80–5.00mm × 3.80–4.00mm × 1.35–1.75mm (L×W×H), lead pitch 1.27mm, and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Output Enable Control | Logic-high enables signal pass-through; logic-low places OUT in high-impedance state and cuts supply current to 250µA |
| VCC | Positive Supply | +5V analog supply rail; requires local 0.1µF + 1000pF bypassing for RF stability |
| OUT | Buffered Signal Output | Unity-gain buffered output capable of driving 5kΩ resistive or unspecified capacitive loads without oscillation |
| VEE | Negative Supply | -5V analog supply rail; must be decoupled independently from VCC |
| IN1 / IN0 | Analog Signal Inputs | Dual independent video input terminals; selected by A0 under EN = high |
| GND | Analog Ground Reference | Noise-sensitive signal ground; must be isolated from digital ground and routed with minimal voids |
| A0 | Channel Select Input | Single-bit address selecting IN0 (A0 = 0) or IN1 (A0 = 1); transparent, no internal latch |
Key Features
| Feature | Design Value |
|---|---|
| Make-before-break switching | Eliminates dropout during channel transitions, critical for uninterrupted video streaming in broadcast routers |
| High-Z disable mode | Enables hot-swappable insertion into active video arrays without signal contention or loading effects |
| 3pF input capacitance | Minimizes loading on upstream drivers and preserves rise time in cascaded video paths |
| 700V/µs slew rate | Supports fast edge fidelity for high-resolution RGB and sync pulse integrity |
| ±5V dual-supply operation | Matches legacy video equipment rails and avoids level-shifting complexity in analog infrastructure |
Applications
| Broadcast Video Router | HDTV Signal Multiplexer |
|---|---|
Use Scenario: Switching between multiple camera feeds in live OB van or studio control room. IC Role / Device Role / Timing Role: SPDT analog video switch providing low-glitch, high-isolation source selection before distribution amplification. Use Value: Maintains sub-0.01° differential phase accuracy across all selected paths, preserving color registration in 1080i/720p workflows. | Use Scenario: Routing RGBHV or component YPbPr signals from graphics generators to display walls. IC Role / Device Role / Timing Role: Buffered crosspoint building block enabling scalable matrix architectures with minimal crosstalk. Use Value: -92dB crosstalk and 330MHz bandwidth ensure pixel-perfect timing alignment and chroma separation in large-format displays. |
| Telecom Baseband Routing | Data Acquisition Front-End |
Use Scenario: Selecting between test signal sources (e.g., modulators, pattern generators) in RF lab instrumentation. IC Role / Device Role / Timing Role: High-bandwidth analog switch isolating IF/RF baseband paths in signal analyzers and vector modulators. Use Value: -78dB off-isolation at 30MHz prevents measurement contamination during automated calibration sequences. | Use Scenario: Channel selection prior to ADC sampling in multi-sensor industrial monitoring systems. IC Role / Device Role / Timing Role: Low-distortion, unity-gain video switch conditioning analog sensor outputs before digitization. Use Value: 0.01% differential gain error preserves amplitude linearity across temperature for precision DC-coupled measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPDT buffered video switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8170ARZ | Single 2:1 mux, 325MHz bandwidth, ±5V supply, but higher 20mV glitch and no high-Z disable | Lacks EN-controlled high-Z state; unsuitable for hot-swappable or power-gated arrays | Prefer MAX4121CSA when system-level power management or modular array expansion is required |
| THS4631D | Wideband op-amp (180MHz) used as discrete switch driver; requires external FETs and logic, no integrated control | Higher BOM count, layout complexity, and calibration burden vs. monolithic solution | MAX4121CSA offers lower design risk and faster time-to-test for turnkey video routing subsystems |
Compared with AD8170ARZ and THS4631D, the MAX4121CSA uniquely integrates make-before-break logic, high-Z disable, and broadcast-grade differential error specs in a single 8-pin SO package-enabling compact, low-power, and standards-compliant video switching without external support circuitry.
Availability
MAX4121CSA is available at Aetrix Electronics and suitable for broadcast video routers, HDTV signal multiplexers, telecom baseband routing, and data acquisition front-ends requiring stable component supply and long-term production continuity.
Supply support for MAX4121CSA 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) designs high-performance analog and mixed-signal ICs for precision, power, and interface applications.
The MAX4121CSA belongs to Maxim's high-frequency video switch product line, engineered specifically for broadcast-quality analog video routing where phase/gain accuracy, isolation, and glitch suppression are non-negotiable.
FAQ
What is the operating supply voltage range for the MAX4121CSA?
The MAX4121CSA operates from ±4.5V to ±5.5V dual supplies, with absolute maximum ratings of +6V on VCC and -6V on VEE. Typical operation uses ±5V, and the device maintains specified performance-including 330MHz bandwidth and 0.01°/0.01% differential error-across this full range. Supply rejection ratio is 50dB, ensuring robustness against rail noise in video signal chains.
Does the MAX4121CSA support DC-coupled video signals?
Yes, the MAX4121CSA supports DC-coupled operation with an input voltage range of ±2.5V and output offset voltage of ±15mV. Its open-loop buffer architecture and ±5V supplies allow true DC to 330MHz signal handling, making it suitable for RGBHV, YPbPr, and other baseband video formats requiring DC brightness and black-level preservation.
How does the MAX4121CSA achieve ultra-low switching glitch?
The MAX4121CSA achieves 13mVp-p switching glitch through proprietary make-before-break switching and optimized internal node timing. The glitch is intentionally positive-polarity to avoid confusion with negative sync pulses in composite video. This behavior is verified across temperature and supply variations and does not require external blanking or clamping circuits.
Can the MAX4121CSA drive 75Ω coaxial video lines directly?
No-the MAX4121CSA output is designed for 5kΩ loads and exhibits ~20Ω dynamic output resistance. Driving 75Ω lines directly causes severe mismatch, gain loss, and reflections. For 75Ω systems, use a dedicated video line driver (e.g., MAX4392) after the MAX4121CSA, or terminate its output into 75Ω with appropriate series resistance per application notes.
What is the thermal performance of the MAX4121CSA in continuous operation?
The MAX4121CSA has a maximum continuous power dissipation of 471mW at +70°C ambient in the 8-pin SO package, with a thermal derating factor of 5.88mW/°C above that temperature. At 5.5mA total supply current and ±5V supplies, typical power dissipation is ~55mW-well within safe margins even in sealed enclosures, provided standard PCB copper pour and airflow guidelines are followed.
MAX4121CSA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPDT - Open/Closed
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- -
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- 4.5V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 500ns, 1µs
- -3db Bandwidth:
- 330MHz
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- -
- Current - Leakage (IS(off)) (Max):
- -
- Crosstalk:
- -92dB
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX4121CSA FAQ
1.How can I place an order for MAX4121CSA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4121CSA 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 MAX4121CSA reliable?
The price and inventory of MAX4121CSA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4121CSA is usually 5 days.
3.What payment methods are accepted for MAX4121CSA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4121CSA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4121CSA?
MAX4121CSA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4121CSA 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 MAX4121CSA?
For technical support, including MAX4121CSA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4121CSA requirements.
6.How does Aetrix verify that MAX4121CSA is sourced from the original manufacturer or authorized distributors?
All MAX4121CSA 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 MAX4121CSA meets industry standards.
7.What is the process for return or replacement of MAX4121CSA?
All MAX4121CSA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4121CSA, 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 MAX4121CSA part is unused and in its original packaging.
Return procedure for MAX4121CSA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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