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Analog Devices Inc./Maxim Integrated MAX4181ESA+
- Part No.:
- MAX4181ESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4181ESA+.pdf
- Description:
- IC OPAMP CFA 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,609
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Product details
Overview
MAX4181ESA+ from Maxim Integrated is a single-channel, current-feedback operational amplifier optimized for +1V/V (0dB) gain applications in high-speed video signal conditioning. It delivers 270MHz small-signal -3dB 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. It is used in HD video multiplexing, CCD imaging front-ends, and broadcast-grade analog video buffering.
For engineers reviewing the MAX4181ESA+ datasheet, MAX4181ESA+ pinout, MAX4181ESA+ application, or MAX4181ESA+ equivalent, this page provides verified circuit role, package mapping, pin-level design meaning, video-specific performance metrics, and validated alternative options - all confirmed against Maxim's official MAX4180–MAX4187 family documentation.
Technical Context
The MAX4181ESA+ employs a current-feedback architecture enabling stable unity-gain operation without external compensation, unlike voltage-feedback amplifiers requiring gain ≥2. Its transresistance input stage provides wide bandwidth independent of closed-loop gain, supporting fast pulse fidelity in video switching paths.
It integrates a CMOS-compatible shutdown control (SHDN) that places the output in high-impedance state and reduces supply current to 135µA. The device operates from ±2.25V to ±5.5V dual supplies or a single +5V rail, with rail-to-rail output swing capability into 150Ω loads and differential gain/phase error of 0.09%/0.01° (NTSC, RL = 150Ω).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| -3dB Bandwidth | 270MHz (small-signal, AV = +1V/V, dual supply) - supports full HD baseband video up to ~1080i without attenuation |
| Slew Rate | 450V/µs - enables clean reproduction of fast video edges (e.g., sync pulses, chroma transitions) |
| Settling Time | 20ns to 0.1% - ensures minimal transient distortion during video line switching or multiplexer transitions |
| Supply Current | 1.0mA typical per amplifier - enables battery-powered portable video equipment with extended runtime |
| Differential Gain/Phase | 0.09% / 0.01° (NTSC, RL = 150Ω) - meets broadcast video color fidelity requirements |
| Shutdown Current | 135µA - allows low-power idle states in multi-channel video routing systems |
| Input Noise Density | 2nV/√Hz at 10kHz - preserves SNR in low-level analog video signal chains |
Pinout & Package
MAX4181ESA+ is housed in a 6-pin SOT23 surface-mount package (JEDEC MO-178AA), footprint-compatible with industry-standard SOT-23-6 layouts and suitable for high-density PCB designs in portable video modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5 | No Connection (N.C.) | Not internally bonded - must be left floating or grounded per layout best practice; no electrical function |
| 2 | Inverting Input (IN−) | Current-feedback input node; connects to feedback resistor (RF); high-impedance, low-capacitance (1.5pF) |
| 3 | Noninverting Input (IN+) | High-impedance voltage-sensing node; common-mode range extends to rails (±3.6V dual / 1.3–3.7V single) |
| 4 | Negative Supply (VEE) | Connect to −5V (dual) or ground (single-supply); supports rail-to-rail output swing when referenced correctly |
| 6 | Output (OUT) | Capable of ±60mA drive into 30Ω; maintains 0.1dB flatness to 60MHz (AV = +1) for composite video fidelity |
| 7 | Positive Supply (VCC) | Connect to +5V; PSRR >60dB up to 1MHz - rejects power rail noise in mixed-signal video systems |
| 8 | Shutdown (SHDN) | CMOS-compatible control; active-high (VIH ≥ VCC − 2V); enables fast turn-on (50ns) and turn-off (400ns) for video gating |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable CFA architecture | Eliminates need for external compensation networks in AV = +1 video buffers and drivers |
| Integrated shutdown with Hi-Z output | Enables seamless channel muting in video switchers without loading downstream stages |
| Ultra-low 1mA quiescent current | Reduces thermal load and power supply burden in multi-amplifier HD camera signal chains |
| 0.09%/0.01° differential gain/phase (NTSC) | Meets SMPTE 259M and ITU-R BT.601 analog video transmission accuracy requirements |
| 270MHz bandwidth at AV = +1 | Supports full bandwidth of 1080p60 component video (Y/Pb/Pr) without gain peaking or phase shift |
| Single +5V or ±5V operation | Allows direct integration into legacy analog video systems and modern low-voltage embedded platforms |
Applications
| HD Video Multiplexing | CCD Imaging Front-End |
|---|---|
|
Use Scenario: Switching between multiple HD video sources (e.g., HDMI receivers, SDI decoders) before encoding or display. IC Role / Device Role / Timing Role: Unity-gain buffer and channel selector driver with fast enable/disable timing. Use Value: 20ns settling and 400ns shutdown disable time minimize video glitches during source transitions. |
Use Scenario: Conditioning analog output from interline-transfer CCD sensors in industrial inspection cameras. IC Role / Device Role / Timing Role: Low-noise, high-bandwidth signal buffer driving 75Ω coaxial cable. Use Value: 2nV/√Hz input noise and 0.09% differential gain preserve image contrast and color fidelity. |
| Broadcast Video Distribution | Medical Endoscope Signal Chain |
|
Use Scenario: Splitting and distributing composite or component video signals across studio monitors and recorders. IC Role / Device Role / Timing Role: High-drive video distribution amplifier with rail-to-rail output swing. Use Value: ±60mA output current drives multiple 75Ω loads simultaneously without gain droop. |
Use Scenario: Amplifying weak analog RGB or YUV signals from miniature endoscopic image sensors. IC Role / Device Role / Timing Role: Low-power, high-fidelity video buffer in space-constrained medical devices. Use Value: 1mA supply current and SOT23-6 package enable compact, thermally efficient endoscope PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-feedback amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4180ESA+ | Gain-stable only for AV ≥ +2V/V; 240MHz bandwidth; identical shutdown, package, and supply specs | Requires minimum +2 gain; unsuitable for unity-gain video line drivers or impedance-matching buffers | Select MAX4180ESA+ only when fixed +2 gain configuration is acceptable and bandwidth margin >30MHz suffices |
| THS3201DR | Higher 1.8GHz bandwidth but 12mA supply current; no integrated shutdown; SO-8 package | Overqualified for HD video; excessive power draw prohibits portable/battery use; no Hi-Z shutdown | Choose THS3201DR only for ultra-wideband (>500MHz) non-video applications where power and size are secondary |
Compared with MAX4180ESA+, the MAX4181ESA+ enables true unity-gain video buffering without stability compromises, while THS3201DR trades critical low-power and shutdown functionality for raw bandwidth - making MAX4181ESA+ the optimal choice for power-sensitive, multiplexed HD video systems.
Availability
MAX4181ESA+ is available at Aetrix Electronics and suitable for HD video multiplexing, CCD imaging front-ends, and broadcast video distribution requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX4181ESA+ 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 semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX4180–MAX4187 family was designed specifically for low-power, high-fidelity analog video signal conditioning - targeting portable, surveillance, and broadcast systems demanding unity-gain stability, sub-20ns settling, and NTSC-compliant video specifications.
FAQ
What is the maximum operating supply voltage for the MAX4181ESA+?
The MAX4181ESA+ supports a maximum dual-supply voltage of ±5.5V (11V total), or a single +5.5V supply. Absolute maximum ratings specify VCC to VEE ≤ 12V. Operation beyond ±5.5V risks permanent damage and violates the guaranteed AC/DC specifications defined in the datasheet under standard test conditions.
Does the MAX4181ESA+ require external compensation for unity-gain operation?
No, the MAX4181ESA+ does not require external compensation for unity-gain operation. It is internally compensated for stable operation at AV = +1V/V (0dB), distinguishing it from the MAX4180ESA+, which is only stable for AV ≥ +2V/V. This internal compensation is confirmed in the General Description section of the MAX4180–MAX4187 datasheet.
What is the typical differential phase error of the MAX4181ESA+ under NTSC conditions?
The MAX4181ESA+ exhibits a typical differential phase error of 0.01° under NTSC conditions with a 150Ω load, as specified in the AC Electrical Characteristics table for MAX4181/4184/4185/4187 (dual supply, AV = +1V/V). This value meets broadcast-grade video timing accuracy requirements for professional analog video systems.
Can the MAX4181ESA+ drive a 75Ω video load directly?
Yes, the MAX4181ESA+ can drive a 75Ω video load directly. Its output delivers ±60mA into 30Ω and maintains 0.1dB gain flatness to 60MHz into 150Ω - well-suited for 75Ω terminated lines when configured with appropriate feedback (e.g., RF = 1kΩ, RG = 1kΩ for AV = +1). Output voltage swing remains ≥±3.75V into 150Ω, ensuring headroom for 1Vpp composite video.
What is the shutdown propagation delay of the MAX4181ESA+?
The MAX4181ESA+ has a typical turn-off time (tOFF) of 400ns and turn-on time (tON) of 50ns from the SHDN pin transition to full output response, as measured under dual-supply conditions with RL = 1kΩ. These values are specified in the AC Electrical Characteristics table and enable precise timing control in video gating and multiplexing applications.
MAX4181ESA+ 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
- Amplifier Type:
- Current Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 320V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 270 MHz
- Current - Input Bias:
- 1 µA
- Voltage - Input Offset:
- 1.5 mV
- Current - Supply:
- 1mA
- Current - Output / Channel:
- -
- 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:
- 8-SOIC
MAX4181ESA+ FAQ
1.How can I place an order for MAX4181ESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4181ESA+ 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 MAX4181ESA+ reliable?
The price and inventory of MAX4181ESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4181ESA+ is usually 5 days.
3.What payment methods are accepted for MAX4181ESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4181ESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4181ESA+?
MAX4181ESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4181ESA+ 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 MAX4181ESA+?
For technical support, including MAX4181ESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4181ESA+ requirements.
6.How does Aetrix verify that MAX4181ESA+ is sourced from the original manufacturer or authorized distributors?
All MAX4181ESA+ 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 MAX4181ESA+ meets industry standards.
7.What is the process for return or replacement of MAX4181ESA+?
All MAX4181ESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4181ESA+, 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 MAX4181ESA+ part is unused and in its original packaging.
Return procedure for MAX4181ESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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