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Analog Devices Inc./Maxim Integrated MAX4090EXT+
- Part No.:
- MAX4090EXT+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Video Amps and Modules
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
MAX4090EXT+.pdf
- Description:
- IC AMP BUFFER SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,743
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Product details
Overview
The MAX4090EXT+ from Maxim Integrated is a 3V/5V, 6dB video buffer IC with integrated sync-tip clamp and low-power shutdown mode, housed in a 6-pin SC70 package. It delivers 2V/V voltage gain, 45MHz large-signal -3dB bandwidth, and 150nA shutdown current, enabling DC-coupled driving of 150Ω back-terminated video loads in portable digital camcorders and video-enabled cell phones.
For engineers reviewing the MAX4090EXT+ datasheet, MAX4090EXT+ pinout, MAX4090EXT+ application, or MAX4090EXT+ equivalent, key selection considerations include input clamp voltage (0.27V–0.47V), output swing (2.55V at 3V supply), differential gain (0.5% at 5V), PSRR (60–80dB), and SC70 thermal derating (3.1mW/°C above +70°C).
Technical Context
The MAX4090EXT+ implements an active sync-tip clamp that fixes the video waveform's minimum to ~0.38V at both input and output, enabling stable DC-coupled operation without external level-shifting. Its BiCMOS process supports rail-to-rail output swing into 150Ω while maintaining <0.5% differential gain error at 5V supply.
Shutdown control is implemented via a CMOS-compatible SHDN pin with VIL = 0.3×VCC and VIH = 0.7×VCC, disabling output and reducing ICC to 150nA. The internal feedback loop (FB pin tied to OUT) configures it as a unity-gain buffer with precise gain flatness: ±0.1dB up to 17MHz (large-signal) and ±0.1dB up to 25MHz (small-signal).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 5.5V - supports direct integration into 3V and 5V portable video rails without LDO. |
| Quiescent Supply Current | 6.5mA typical - enables battery operation for >10 hours in DVD players with 65mAh cells. |
| Shutdown Current | 150nA - reduces standby power to negligible levels during display sleep modes. |
| Large-Signal Bandwidth | 45MHz - preserves NTSC/PAL luminance and chrominance fidelity through full 6MHz video passband. |
| Differential Gain Error | 0.5% at 5V - ensures color saturation accuracy in high-brightness video output stages. |
| Input Clamp Voltage | 0.27V–0.47V - sets black-level reference compatible with standard sync-tip amplitude (≈300mV). |
| Slew Rate | 275V/µs - prevents edge distortion on fast video transitions (e.g., multiburst test patterns). |
| PSRR | 60–80dB - rejects switching noise from DC-DC converters powering adjacent baseband ICs. |
Pinout & Package
MAX4090EXT+ is packaged in a 6-pin SC70 (package code X6SN-1), measuring 2.0mm × 1.25mm × 0.95mm, with 0.65mm lead pitch and RoHS-compliant matte tin finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Video Output | Drives 150Ω back-terminated load; requires 0.1µF bypass cap at VCC and short trace to connector. |
| 2 (GND) | Ground | Low-impedance return path for video signal and bias currents; must connect to solid ground plane. |
| 3 (IN) | Video Input | AC-coupled input accepting 75Ω source impedance; clamp capacitor (0.1µF) stores sync-tip reference. |
| 4 (VCC) | Power Supply | 2.7–5.5V single supply; bypassed with 0.1µF ceramic capacitor placed within 2mm of pin. |
| 5 (SHDN) | Shutdown Control | Active-high logic input; drives output to high-impedance state when pulled low (≤0.3×VCC). |
| 6 (FB) | Feedback | Internally connected to OUT; must be shorted externally to configure unity-gain buffer mode. |
Key Features
| Feature | Design Value |
|---|---|
| Sync-tip clamp | Fixes video black level at 0.38V ±0.1V across -40°C to +85°C, eliminating need for external DC restoration. |
| DC-coupled output | Enables direct connection to 150Ω coaxial cable without AC coupling capacitors ≥220µF. |
| Low-power shutdown | Reduces ICC to 150nA while preserving pin states, supporting instant wake-up in portable UIs. |
| 6dB fixed gain | 2V/V voltage gain maintains NTSC/PAL signal amplitude integrity without external gain-setting resistors. |
| SC70 footprint | 2.0mm × 1.25mm body allows placement adjacent to BGA video processors in space-constrained PDA layouts. |
Applications
| Portable Digital Camcorders | Video-Enabled Cell Phones |
|---|---|
Use Scenario: Driving composite video output from image signal processor to 150Ω coaxial jack in sub-100g handheld camcorders. IC Role / Device Role / Timing Role: DC-coupled video buffer with sync-tip clamping, replacing discrete op-amp + clamp diode solutions. Use Value: Eliminates 220µF output coupling capacitor, reducing board area by 12mm² and enabling thinner form factors. | Use Scenario: Transmitting baseband CVBS signal from mobile SoC to external monitor port during screen mirroring. IC Role / Device Role / Timing Role: Low-noise, high-bandwidth video driver with 150nA shutdown for intermittent display use. Use Value: Achieves 65dB SNR and <0.5° differential phase error, preserving skin-tone fidelity during real-time video streaming. |
| Notebook Computers | Portable DVD Players |
Use Scenario: Buffering analog video output from GPU to VGA or composite port in ultrabooks with thermal envelope <5W. IC Role / Device Role / Timing Role: Single-supply 3V/5V video amplifier with 45MHz bandwidth and 275V/µs slew rate. Use Value: Maintains 0.1dB gain flatness to 17MHz, ensuring sharp text and graphics rendering without high-frequency roll-off. | Use Scenario: Driving NTSC/PAL signal from DVD decoder ASIC to RCA jacks in palm-sized portable players. IC Role / Device Role / Timing Role: Sync-tip clamped video buffer with 0.5% differential gain error at 5V supply. Use Value: Delivers broadcast-grade color accuracy without calibration, meeting FCC Part 15 Class B EMI limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar video buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4091EXT+ | Single-channel variant of same family; identical specs except no shutdown pin (pin 5 unused). | Used where continuous operation is required and power gating is handled upstream. | Select MAX4091EXT+ only if shutdown functionality is unnecessary and PCB layout allows repurposing of SHDN net. |
| LMH6732MF/NOPB | Higher bandwidth (200MHz), no integrated clamp, 12mA ICC, SOT23-6 package. | Requires external sync-tip clamp circuit and higher supply current; suited for high-definition component video. | Choose LMH6732MF/NOPB only when >100MHz bandwidth is mandatory and system-level DC restoration is already present. |
Compared with MAX4091EXT+, the MAX4090EXT+ adds programmable shutdown for battery savings; compared with LMH6732MF/NOPB, it integrates clamp functionality and cuts quiescent current by >99%, making it optimal for portable NTSC/PAL systems where size and runtime are critical.
Availability
MAX4090EXT+ is available at Aetrix Electronics and suitable for portable digital camcorders, video-enabled cell phones, and notebook computers requiring stable component supply with guaranteed long-term availability.
Supply support for MAX4090EXT+ 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 precision analog and mixed-signal ICs for industrial, medical, and consumer applications, with expertise in low-power, high-speed signal conditioning.
The MAX4090EXT+ belongs to Maxim's video interface product line, engineered specifically for battery-powered portable video equipment needing integrated sync-tip clamping, DC-coupled drive, and ultra-low shutdown current.
FAQ
What is the function of the FB pin on the MAX4090EXT+?
The FB (feedback) pin on the MAX4090EXT+ must be externally shorted to the OUT pin to configure the device as a unity-gain video buffer. This connection establishes the internal feedback loop required for stable 2V/V gain operation and proper sync-tip clamp behavior. Leaving FB unconnected or routing it elsewhere will cause gain instability and waveform distortion in the MAX4090EXT+ output.
Can the MAX4090EXT+ operate from a 2.5V supply?
No, the MAX4090EXT+ has a minimum supply voltage of 2.7V per its Absolute Maximum Ratings and DC Electrical Characteristics table. Operation below 2.7V risks failure to meet specified parameters including clamp voltage accuracy (0.27V–0.47V), output swing (2.55V at 3V), and PSRR (60dB min). Systems requiring 2.5V rails should select alternative video buffers rated down to 2.5V or add a low-dropout regulator.
How does the MAX4090EXT+ achieve DC-coupled video output without large capacitors?
The MAX4090EXT+ achieves DC-coupled video output by integrating an active sync-tip clamp that fixes the black level at ~0.38V at both input and output nodes. This eliminates the need for large AC-coupling capacitors (typically ≥220µF) used in traditional video drivers. Instead, only a 0.1µF input clamp capacitor is required, enabling compact PCB layouts while preserving DC fidelity of the MAX4090EXT+ output signal.
What is the maximum allowable input voltage range for the MAX4090EXT+?
The MAX4090EXT+ input voltage range is specified as VCLP to (VCC + 0.3V), where VCLP is the clamp voltage (0.27V–0.47V). For a 3V supply, this yields an absolute input range of 0.27V to 3.3V; for 5V, it is 0.27V to 5.3V. Exceeding VCC + 0.3V risks latch-up or damage, and inputs below VCLP degrade clamp accuracy and may cause waveform clipping in the MAX4090EXT+ output stage.
Is the MAX4090EXT+ pin-compatible with other variants like MAX4090EUT+?
Yes, the MAX4090EXT+ (SC70) shares identical pinout and electrical specifications with the MAX4090EUT+ (SOT23) and MAX4090ELT+ (µDFN), all being 6-pin packages with matching pin 1 (OUT), pin 2 (GND), pin 3 (IN), pin 4 (VCC), pin 5 (SHDN), and pin 6 (FB). However, thermal performance differs: SC70 derates at 3.1mW/°C above +70°C versus 8.7mW/°C for SOT23, so layout cooling must be verified per package when using MAX4090EXT+.
MAX4090EXT+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- Buffer
- Output Type:
- -
- Number of Circuits:
- 1
- -3db Bandwidth:
- 55 MHz
- Slew Rate:
- 275V/µs
- Current - Supply:
- 6.5 mA
- Current - Output / Channel:
- 85 mA
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 5.5V
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- -
- Supplier Device Package:
- SC-70-6
MAX4090EXT+ FAQ
1.How can I place an order for MAX4090EXT+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4090EXT+ 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 MAX4090EXT+ reliable?
The price and inventory of MAX4090EXT+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4090EXT+ is usually 5 days.
3.What payment methods are accepted for MAX4090EXT+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4090EXT+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4090EXT+?
MAX4090EXT+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4090EXT+ 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 MAX4090EXT+?
For technical support, including MAX4090EXT+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4090EXT+ requirements.
6.How does Aetrix verify that MAX4090EXT+ is sourced from the original manufacturer or authorized distributors?
All MAX4090EXT+ 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 MAX4090EXT+ meets industry standards.
7.What is the process for return or replacement of MAX4090EXT+?
All MAX4090EXT+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4090EXT+, 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 MAX4090EXT+ part is unused and in its original packaging.
Return procedure for MAX4090EXT+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4090EXT+ 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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LT6552IS8#PBF
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LT1252CS8#PBF
Analog Devices Inc.
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AD818ARZ-REEL7
Analog Devices Inc.
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MAX4310EUA+
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AD829ARZ
Analog Devices Inc.
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AD810ARZ
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