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Analog Devices Inc./Maxim Integrated MAX4178EUA+
- Part No.:
- MAX4178EUA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX4178EUA+.pdf
- Description:
- GAIN OF +1 CLOSED-LOOP BUFFER
- Quantity:
- Payment:
- Shipping:
Inventory:3,443
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Product details
Overview
MAX4178EUA+ from Maxim Integrated is a ±5V, unity-gain (0dB), high-speed closed-loop video buffer IC optimized for 75Ω video cable driving. It delivers 330MHz -3dB bandwidth, 1300V/µs slew rate, 0.01° differential phase error, and drives ±2Vp-p into 100Ω loads - enabling broadcast-quality SD/HD video routing in compact µMAX-8 packages.
For engineers reviewing the MAX4178EUA+ datasheet, MAX4178EUA+ pinout, MAX4178EUA+ application, or MAX4178EUA+ equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, application-specific implementation guidance, and two confirmed alternative parts with documented functional trade-offs.
Technical Context
The MAX4178EUA+ uses a hybrid current-feedback/voltage-feedback architecture that achieves low input offset voltage (0.5mV) and bias current (1µA) while retaining high slew rate (1300V/µs) and wide bandwidth (330MHz). Its fixed +1 closed-loop gain eliminates external feedback components and ensures stable operation into 50Ω/75Ω video loads.
It features short-circuit protection (150mA typical limit), 8000V HBM ESD rating, and operates across –40°C to +85°C. The device maintains 0.1dB flatness to 150MHz and full-power bandwidth of 250MHz at 2Vp-p output - critical for composite, S-video, and component video signal integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| -3dB Bandwidth | 330MHz - supports >1080i video signals without attenuation in baseband video paths. |
| Slew Rate | 1300V/µs - enables clean 2Vp-p step response with <12ns settling to 0.1% in video distribution. |
| Differential Phase Error | 0.01° at 3.58MHz - preserves color fidelity in NTSC/PAL broadcast systems. |
| Input Offset Voltage | 0.5mV max - minimizes DC shift in cascaded video amplifiers and ADC front-ends. |
| Supply Current | 8mA - allows integration into power-constrained video routing boards with multiple channels. |
| Output Drive | ±2.0V swing into 100Ω - delivers full amplitude to back-terminated 75Ω coaxial cables via 75Ω series resistor. |
| Gain Accuracy | ±1.0% max with 100Ω load - ensures consistent signal level across multi-channel video switchers. |
Pinout & Package
MAX4178EUA+ is housed in an 8-pin µMAX package (3mm × 3mm, 0.8mm height), pin-compatible with SO and PDIP variants. The package supports high-frequency layout with exposed pad for thermal enhancement and low-inductance grounding.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Amplifier output - directly drives 75Ω coaxial cable or 100Ω load; requires 75Ω series termination for impedance matching. |
| 2 | N.C. | No internal connection - must be left unconnected; not usable as bypass or feedback node. |
| 3 | GND | Analog ground reference - tie to low-impedance ground plane; critical for minimizing video noise and distortion. |
| 4 | IN | Inverting input - accepts single-ended video source; noninverting input internally tied to GND for unity-gain configuration. |
| 5 | N.C. | No internal connection - must remain floating; no decoupling or routing allowed. |
| 6 | VCC | +5V supply - bypass with 0.1µF ceramic capacitor placed ≤2mm from pin to suppress high-frequency supply noise. |
| 7 | VEE | –5V supply - symmetric dual-rail operation enables full-swing AC-coupled video without clipping. |
| 8 | N.C. | No internal connection - electrically isolated; PCB pad may be used for thermal relief or mechanical anchoring only. |
Key Features
| Feature | Design Value |
|---|---|
| Hybrid Feedback Architecture | Combines current-feedback speed (330MHz BW) with voltage-feedback precision (0.5mV VOS, 70dB PSRR). |
| Video-Optimized Linearity | 0.04% differential gain error and 0.01° phase error preserve chroma/luma timing in broadcast video. |
| Capacitive Load Drive | Stable with up to 100pF load - supports direct connection to long PCB traces or unterminated test points without oscillation. |
| Short-Circuit Robustness | 150mA output current limit protects against indefinite GND shorts - no thermal shutdown required in video mux applications. |
| ESD Hardness | 8000V HBM rating - survives handling and connector hot-plug events in field-deployed video equipment. |
Applications
| Broadcast Video Routing | Medical Endoscopy Imaging |
|---|---|
|
Use Scenario: Switching and distributing composite NTSC video between camera heads, monitors, and recording devices in surgical suites. IC Role / Device Role / Timing Role: Unity-gain buffer isolating source impedance and driving multiple 75Ω coaxial outputs with minimal skew and phase distortion. Use Value: Maintains 0.01° differential phase accuracy across 3.58MHz color subcarrier - prevents hue shifts during live procedure monitoring. |
Use Scenario: Conditioning analog RGB or Y/C signals from high-resolution endoscopic cameras before digitization. IC Role / Device Role / Timing Role: Low-noise, fast-settling driver for flash ADC inputs (e.g., MAX100/MAX101), preserving 250Msps sampling fidelity. Use Value: 250MHz full-power bandwidth ensures accurate reconstruction of 1080p@60Hz video edges without slew-induced distortion. |
| HD-SDI Cable Driver | Professional Video Switcher |
|
Use Scenario: Driving 75Ω BNC outputs in HD-SDI signal generators or test equipment requiring DC-coupled baseband compliance. IC Role / Device Role / Timing Role: Fixed-gain +1 buffer delivering ±2Vp-p into terminated 75Ω loads with <12ns 0.1% settling time. Use Value: 1300V/µs slew rate prevents edge rounding on 1.485Gbps HD-SDI data eye, maintaining jitter margin. |
Use Scenario: Signal conditioning stage in 16×16 analog video matrix switchers used in broadcast control rooms. IC Role / Device Role / Timing Role: Channel-isolated unity-gain amplifier providing gain-matched, low-crosstalk distribution to downstream mixers or encoders. Use Value: ±1.0% gain error across temperature ensures consistent luma levels across all 16 outputs without per-channel calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unity-gain video buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4278EUA+ | Fixed +2V/V gain (6dB), 310MHz -3dB BW, 1600V/µs slew rate | Used when signal level boosting is required before long cable runs or splitting | Select MAX4278EUA+ only if system gain budget demands +2x amplification; MAX4178EUA+ is preferred for impedance-matched unity-gain distribution. |
| THS3201DR | Single-supply (±5V to ±15V), 1.8GHz BW, higher quiescent current (16mA) | Supports wider supply range and higher bandwidth but lacks integrated video-optimized linearity specs | Choose THS3201DR for non-standard supply rails or >330MHz needs; MAX4178EUA+ remains optimal for broadcast-grade 75Ω video with guaranteed DG/DP performance. |
Compared with MAX4278EUA+, MAX4178EUA+ provides lower gain error and tighter differential phase tolerance at unity gain, making it superior for multi-output video distribution where level matching and color fidelity are critical; versus THS3201DR, it trades raw bandwidth for guaranteed video-spec linearity and lower power in standard ±5V systems.
Availability
MAX4178EUA+ is available at Aetrix Electronics and suitable for broadcast video routing, medical imaging front-ends, and professional video switchers requiring stable component supply, long-term lifecycle support, and guaranteed parametric performance over –40°C to +85°C.
Supply support for MAX4178EUA+ 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 demanding industrial, communications, and consumer applications - with emphasis on signal integrity, power efficiency, and reliability.
The MAX4178/MAX4278 family was engineered specifically for high-fidelity video signal distribution, addressing the need for low-distortion, high-bandwidth, unity- or fixed-gain buffers in broadcast, medical, and test equipment.
FAQ
What is the operating temperature range for MAX4178EUA+?
The MAX4178EUA+ is specified for continuous operation from –40°C to +85°C. All DC and AC electrical characteristics - including input offset voltage, bandwidth, and differential phase error - are guaranteed across this full industrial temperature range, making MAX4178EUA+ suitable for rack-mounted broadcast gear and mobile medical imaging systems.
Can MAX4178EUA+ drive 75Ω coaxial cable directly?
Yes, MAX4178EUA+ is explicitly designed for 75Ω video cable driving. When configured with a 75Ω series resistor at the output pin (pin 1), it provides proper source termination into standard 75Ω coaxial cable, preventing reflections and preserving signal integrity up to 330MHz. This configuration is validated in Maxim's typical operating circuits and video distribution amplifier reference designs.
Does MAX4178EUA+ require external feedback resistors?
No, MAX4178EUA+ is a fully integrated, closed-loop unity-gain buffer. Its gain is factory-trimmed to +1V/V (0dB) using internal precision resistors - eliminating the need for external feedback networks, saving board space, and ensuring consistent gain accuracy (±1.0%) across temperature and unit-to-unit variation. This simplifies layout and improves repeatability in high-channel-count video systems.
How does MAX4178EUA+ handle capacitive loads?
MAX4178EUA+ remains stable driving up to 100pF of capacitive load without oscillation, supporting direct connection to long PCB traces or probe points. For larger capacitances, an isolation resistor (e.g., 20Ω) between pin 1 (OUT) and the load restores stability - though this reduces delivered gain. This behavior is characterized in Figures 2a/3a of the MAX4178/MAX4278 datasheet and applies directly to MAX4178EUA+.
Is MAX4178EUA+ pin-compatible with other packages in the same family?
Yes, the MAX4178EUA+ (8-pin µMAX) shares identical pinout and functionality with MAX4178ESA+ (SO-8) and MAX4178EPA+ (PDIP-8). All three packages use the same pin numbering: pin 1 = OUT, pin 2 = N.C., pin 3 = GND, pin 4 = IN, pin 5 = N.C., pin 6 = VCC, pin 7 = VEE, pin 8 = N.C. This enables drop-in replacement across form factors without layout changes.
MAX4178EUA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- MAX4178
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- Buffer, Current Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 1300V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 330 MHz
- Current - Input Bias:
- 1 µA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 8mA
- Current - Output / Channel:
- 100 mA
- Voltage - Supply Span (Min):
- -
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-µMAX
MAX4178EUA+ FAQ
1.How can I place an order for MAX4178EUA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4178EUA+ 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 MAX4178EUA+ reliable?
The price and inventory of MAX4178EUA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4178EUA+ is usually 5 days.
3.What payment methods are accepted for MAX4178EUA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4178EUA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4178EUA+?
MAX4178EUA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4178EUA+ 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 MAX4178EUA+?
For technical support, including MAX4178EUA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4178EUA+ requirements.
6.How does Aetrix verify that MAX4178EUA+ is sourced from the original manufacturer or authorized distributors?
All MAX4178EUA+ 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 MAX4178EUA+ meets industry standards.
7.What is the process for return or replacement of MAX4178EUA+?
All MAX4178EUA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4178EUA+, 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 MAX4178EUA+ part is unused and in its original packaging.
Return procedure for MAX4178EUA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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