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Analog Devices Inc./Maxim Integrated MAX4185EUB
- Part No.:
- MAX4185EUB
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4185EUB.pdf
- Description:
- IC OPAMP DUAL 240/270MHZ 10-UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,148
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Product details
Overview
MAX4185EUB from Maxim Integrated is a single-channel, current-feedback video amplifier optimized for +1V/V (0dB) gain applications. It delivers 270MHz small-signal bandwidth, 450V/µs slew rate, and 20ns settling time to 0.1%, with ultra-low 1mA quiescent supply current per amplifier and integrated shutdown mode reducing current to 135µA. It operates from ±2.25V to ±5.5V dual supplies or +5V single supply, targeting high-definition video buffering and multiplexing.
For engineers reviewing the MAX4185EUB datasheet, MAX4185EUB pinout, MAX4185EUB application, or MAX4185EUB equivalent, key selection criteria include its +1V/V stable compensation, 0.08%/0.03° differential gain/phase error at NTSC, high-Z output in shutdown, and 10-pin µMAX package compatibility with space-constrained video signal paths.
Technical Context
The MAX4185EUB employs a current-feedback architecture enabling wide bandwidth independent of closed-loop gain-specifically compensated for unity-gain stability. Its transimpedance input stage provides low input impedance at the inverting node and high impedance at the noninverting node, supporting fast transient response and minimal phase shift across video frequencies.
It integrates a dedicated SHDN pin that places the output in high-impedance state and reduces supply current to 135µA, enabling seamless analog video switching without loading downstream stages. The device maintains 0.1dB gain flatness to 60MHz under dual-supply conditions and achieves 0.08% differential gain error into 150Ω loads-critical for broadcast-quality RGB or Y/C signal integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| -3dB Bandwidth | 270MHz (small-signal, AV = +1V/V, dual supply) - supports full HD (1080p60) baseband video bandwidth |
| Slew Rate | 450V/µs - ensures distortion-free reproduction of fast video edges and sync pulses |
| Settling Time | 20ns to 0.1% - meets tight timing budgets in digital video sampling and multiplexing |
| Differential Gain/Phase | 0.08%/0.03° (NTSC, RL = 150Ω) - preserves color fidelity in professional video systems |
| Supply Current | 1mA (active), 135µA (shutdown) - enables battery-powered portable video equipment |
| Input Voltage Range | ±3.6V (dual), 1.3V to 3.7V (single +5V) - accommodates standard video DC bias levels |
| Output Drive | ±60mA - drives 75Ω or 150Ω video lines directly without external buffers |
Pinout & Package
The MAX4185EUB is housed in a 10-pin µMAX package (3mm × 3mm, 0.5mm pitch), thermally enhanced for high-speed operation in compact layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Amplifier A output - delivers buffered video signal with 4.8Ω output impedance |
| 2 | INA− | Inverting input - low-impedance node for feedback network connection |
| 3 | INA+ | Noninverting input - high-impedance video signal input node |
| 4 | VEE | Negative power supply - tied to ground for single +5V operation |
| 5 | SHDNA | Shutdown control for Amp A - logic-high ≥(VCC − 2V) enables output |
| 6 | VCC | Positive power supply - accepts +5V or ±5V rail |
| 7 | N.C. | No internal connection - left floating or grounded per layout best practice |
| 8 | N.C. | No internal connection - unused pin, no electrical function |
| 9 | N.C. | No internal connection - unused pin, no electrical function |
| 10 | N.C. | No internal connection - unused pin, no electrical function |
Key Features
| Feature | Design Value |
|---|---|
| +1V/V unity-gain stable compensation | Enables direct-drive video line drivers without external compensation components |
| High-Z shutdown output | Allows insertion into active video signal chains without loading or DC offset disruption |
| 0.1dB gain flatness to 60MHz | Preserves luminance/chrominance amplitude balance across NTSC/PAL frequency bands |
| 270MHz small-signal bandwidth | Supports >1080p60 RGB/YUV baseband video with margin for filter roll-off |
| Single +5V or ±5V operation | Reduces system BOM by eliminating dual-rail generation in portable video gear |
Applications
| HD Video Switching Matrix | Portable Broadcast Camera Signal Chain |
|---|---|
Use Scenario: Routing multiple HD video sources (HDMI, SDI, analog RGB) to a single display or recorder using analog multiplexing. IC Role / Device Role / Timing Role: Buffer and isolate each video channel during switching; provides fast settling and high off-isolation (-54dB). Use Value: Eliminates ghosting and crosstalk between channels due to 20ns settling and high-Z shutdown state. | Use Scenario: Signal conditioning in battery-powered 4K camcorders before ADC sampling or wireless transmission. IC Role / Device Role / Timing Role: Low-power video buffer driving 75Ω coaxial cable; enables dynamic power gating via SHDN pin. Use Value: Extends battery life with 135µA shutdown current while maintaining full video fidelity (0.08% DG error). |
| Medical Endoscope Video Processor | Professional Studio Monitor Input Stage |
Use Scenario: Amplifying and conditioning real-time endoscopic video signals in compact surgical imaging systems. IC Role / Device Role / Timing Role: Unity-gain video driver interfacing CMOS image sensor output to FPGA-based processing pipeline. Use Value: Maintains diagnostic color accuracy with 0.03° differential phase error and 60MHz 0.1dB flatness. | Use Scenario: Input buffer for broadcast-grade RGBHV monitors accepting analog component video inputs. IC Role / Device Role / Timing Role: High-fidelity, low-noise video amplifier ensuring precise signal integrity prior to on-screen display processing. Use Value: Delivers 450V/µs slew rate and -73dBc SFDR to prevent visible artifacts in static test patterns and moving video. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-feedback video amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| THS3201DGN | Higher 1.8GHz bandwidth but 12mA supply current; requires ±5V only; no shutdown function | Used in RF/video hybrid systems where speed outweighs power constraints | Select when >1GHz bandwidth is required and power budget allows 12× higher quiescent current |
| LMH6702MA | 220MHz bandwidth, 3.5mA supply current, no integrated shutdown, SO-8 package | Preferred in cost-sensitive industrial video recorders with less stringent size requirements | Select when µMAX footprint is not mandatory and shutdown functionality is implemented externally |
Compared with THS3201DGN and LMH6702MA, the MAX4185EUB uniquely balances 270MHz bandwidth, 1mA quiescent current, integrated shutdown, and 10-pin µMAX packaging-making it optimal for portable, multiplexed, and space-constrained HD video designs where power efficiency and board area are critical.
Availability
MAX4185EUB is available at Aetrix Electronics and suitable for HD video switching matrices, portable broadcast camera signal chains, and medical endoscope video processors requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for MAX4185EUB 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, mixed-signal, and power management ICs for demanding industrial, communications, and consumer applications.
The MAX4180–MAX4187 family was engineered specifically for high-performance video signal conditioning-delivering unity- or two-gain stability, ultra-low power, and broadcast-grade video specifications in miniature packages.
FAQ
What is the recommended operating supply for MAX4185EUB in portable video applications?
The MAX4185EUB is fully specified for single +5V operation, making it ideal for portable video applications. With VEE tied to ground, it delivers full performance-including 270MHz bandwidth and 20ns settling-while drawing only 1mA quiescent current. This eliminates the need for negative rails and simplifies power design in battery-powered systems like field monitors and camcorders.
Does MAX4185EUB support DC-coupled video signal paths?
Yes, MAX4185EUB supports DC-coupled video signal paths. Its input common-mode voltage range extends from ±3.6V (dual supply) or 1.3V to 3.7V (single +5V), and output swing reaches ±3.75V (dual) or 1.3V to 3.7V (single). This enables direct coupling of RGB, YPbPr, or VGA signals without AC-coupling capacitors-reducing component count and preserving low-frequency video content.
How does the shutdown feature of MAX4185EUB behave electrically?
When the SHDNA pin is driven ≤(VCC − 3V), the MAX4185EUB disables its output stage and places OUTA in a high-impedance state (leakage < ±0.1µA), while reducing supply current to 135µA. Turn-off time is 400ns and turn-on time is 50ns-fast enough for frame-synchronized video blanking or channel muting without visible glitches.
Can MAX4185EUB drive standard 75Ω video loads?
Yes, MAX4185EUB is rated for ±60mA output current and has been characterized driving 75Ω and 150Ω loads. At 150Ω, it achieves 0.08% differential gain and 0.03° differential phase error (NTSC), meeting broadcast video standards. For 75Ω, output swing remains >2Vp-p with <0.5dB peaking up to 270MHz-enabling direct drive of coaxial video interfaces without external termination.
What is the thermal performance of MAX4185EUB in the 10-pin µMAX package?
The MAX4185EUB in the 10-pin µMAX package has a thermal resistance θJA of 5.60°C/mW. At 1mA supply current and typical video load conditions, power dissipation stays below 40mW, resulting in negligible junction temperature rise (<0.25°C above ambient)-ensuring stable DC offset and gain performance in sealed enclosures or stacked PCBs.
MAX4185EUB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- Current Feedback
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 320V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 245 MHz
- Current - Input Bias:
- 1 µA
- Voltage - Input Offset:
- 1.5 mV
- Current - Supply:
- 1mA (x2 Channels)
- Current - Output / Channel:
- 60 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 11 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-uMAX/uSOP
MAX4185EUB FAQ
1.How can I place an order for MAX4185EUB through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4185EUB 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 MAX4185EUB reliable?
The price and inventory of MAX4185EUB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4185EUB is usually 5 days.
3.What payment methods are accepted for MAX4185EUB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4185EUB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4185EUB?
MAX4185EUB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4185EUB 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 MAX4185EUB?
For technical support, including MAX4185EUB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4185EUB requirements.
6.How does Aetrix verify that MAX4185EUB is sourced from the original manufacturer or authorized distributors?
All MAX4185EUB 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 MAX4185EUB meets industry standards.
7.What is the process for return or replacement of MAX4185EUB?
All MAX4185EUB units undergo pre-shipment inspection (PSI). If there is an issue with MAX4185EUB, 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 MAX4185EUB part is unused and in its original packaging.
Return procedure for MAX4185EUB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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