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Analog Devices Inc./Maxim Integrated MAX477EPA+
- Part No.:
- MAX477EPA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX477EPA+.pdf
- Description:
- IC OPAMP 300MHZ HIGH-SPEED 8-DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,196
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Product details
Overview
MAX477EPA+ from Maxim Integrated is a ±5V, unity-gain-stable, voltage-feedback op amp optimized for high-speed video and RF signal conditioning. It delivers 300MHz –3dB bandwidth, 1100V/µs slew rate, 0.01°/0.01% differential phase/gain error, and drives 75Ω coaxial cables directly-enabling broadcast-grade video routing and ADC preamplification.
For engineers reviewing the MAX477EPA+ datasheet, MAX477EPA+ pinout, MAX477EPA+ application, or MAX477EPA+ equivalent, key selection criteria include its unique hybrid architecture (voltage-feedback inputs with current-feedback speed), 100pF capacitive load drive capability without oscillation, low 5nV/√Hz input voltage noise, and compatibility with precision DAC/ADC buffering in high-definition TV and medical imaging systems.
Technical Context
The MAX477EPA+ uses a proprietary voltage-feedback topology with dual high-impedance inputs, enabling flexible gain configuration via external resistors while achieving 200MHz full-power bandwidth at ±2Vp-p output. Its internal architecture decouples frequency compensation from feedback resistor values-unlike current-feedback amplifiers-ensuring stable operation across gain settings from –10V/V to +10V/V.
It features short-circuit protection limiting output current to 150mA, 8000V HBM ESD rating, and rail-to-rail input common-mode range (±3.5V at ±5V supplies). The device maintains <0.1dB gain flatness up to 130MHz and exhibits <–74dBc spurious-free dynamic range at 5MHz-critical for baseband video and communications signal integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| –3dB Bandwidth | 300MHz at AV = +1 - supports full HD video baseband (up to ~150MHz) with margin for harmonics and filtering. |
| Slew Rate | 1100V/µs - enables clean 2Vp-p step response in <12ns, essential for fast-settling ADC drivers. |
| Differential Gain/Phase Error | 0.01%/0.01° at 3.58MHz - meets broadcast video standards (e.g., NTSC/PAL) without post-correction. |
| Input Voltage Noise | 5nV/√Hz - preserves SNR in low-level signal chains such as medical imaging front-ends. |
| Capacitive Load Drive | Stable with ≤100pF - allows direct connection to long PCB traces or unterminated cable stubs without external isolation. |
| Supply Current | 8mA quiescent - balances high-speed performance with power efficiency in multi-channel video systems. |
| Input Offset Voltage | 0.5mV max - ensures DC accuracy in precision DAC buffer and sensor signal conditioning applications. |
Pinout & Package
MAX477EPA+ is housed in an 8-pin plastic DIP package (0.300" wide), compatible with through-hole prototyping and legacy industrial PCB layouts. Pin 1 is OUT; Pin 2 is IN–; Pin 3 is IN+; Pin 4 is VEE (–5V); Pin 5 is VCC (+5V); Pins 1, 5, and 8 are NC (no connect) in DIP/SO/µMAX variants.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Amplifier Output | Delivers high-current, low-impedance output capable of driving 50Ω/75Ω loads or multiple parallel video lines. |
| 2 | Inverting Input | High-impedance node for feedback network connection; requires matched layout to IN+ to minimize common-mode rejection degradation. |
| 3 | Noninverting Input | High-impedance reference input; used in noninverting configurations or as DC bias point in AC-coupled video paths. |
| 4 | Negative Supply (VEE) | –5V return path; substrate tied to VEE per chip design-must be low-impedance and decoupled near the pin. |
| 5 | Positive Supply (VCC) | +5V supply rail; requires local 0.1µF ceramic + 4.7µF tantalum decoupling to maintain 300MHz stability. |
| 6–8 | No Connect | Not internally bonded; left floating or grounded per layout best practices-no electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| Voltage-feedback flexibility with current-feedback speed | Enables standard gain-setting resistor networks while delivering 1100V/µs slew rate-eliminates CMF amplifier trade-offs in layout and stability. |
| 0.01°/0.01% video distortion | Meets SMPTE 253M and ITU-R BT.601 broadcast specifications without external correction circuitry. |
| 100pF capacitive load stability | Permits direct interface to ADC input capacitance (e.g., MAX100/MAX101) or long trace runs without added series resistance. |
| 8000V HBM ESD protection | Reduces need for external transient suppression in field-deployed video equipment and medical devices. |
| Short-circuit protected output | Limits fault current to 150mA-prevents latch-up or thermal damage during cable shorts or connector mating errors. |
Applications
| Broadcast Video Routing | Medical Ultrasound Signal Chain |
|---|---|
|
Use Scenario: Switching and distributing composite video signals across multiple monitors or recording devices in broadcast control rooms. IC Role / Device Role / Timing Role: Unity-gain video driver with back-termination for 75Ω coaxial infrastructure, maintaining signal fidelity across 100m cable runs. Use Value: 0.01°/0.01% differential phase/gain error ensures color fidelity and sync stability without calibration-reducing system-level test time. |
Use Scenario: Buffering analog outputs from beamforming ASICs before digitization in portable ultrasound scanners. IC Role / Device Role / Timing Role: Low-noise, high-slew-rate ADC driver for 12-bit, 50Msps flash converters with 50Ω input impedance. Use Value: 5nV/√Hz input voltage noise and 1100V/µs slew rate preserve dynamic range and transient response in RF echo processing. |
| HD Video Digitizer Preamp | Precision DAC Output Buffer |
|
Use Scenario: Conditioning analog video prior to sampling by high-speed flash ADCs (e.g., MAX100/MAX101) in digital oscilloscopes or video analyzers. IC Role / Device Role / Timing Role: Wideband gain-of-1 buffer isolating source impedance from ADC input capacitance and transmission line effects. Use Value: Stable operation into 100pF loads eliminates need for isolation resistors-preserving signal rise time and reducing component count. |
Use Scenario: Driving low-impedance loads (e.g., 50Ω cables or active filters) from high-resolution DACs in automated test equipment. IC Role / Device Role / Timing Role: Precision unity-gain buffer compensating for DAC output impedance variation and ensuring flat frequency response to 100MHz. Use Value: 0.5mV max input offset voltage and 80dB CMRR minimize DC drift and common-mode interference in closed-loop calibration systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8000ARZ | Higher 1500V/µs slew rate but 1.2mV VOS and no guaranteed 100pF load stability; requires external compensation for video use. | Preferred in RF IF amplification where speed dominates over video linearity; less suitable for broadcast video due to higher DG/DP error. | Select AD8000ARZ only when >1GHz small-signal bandwidth is required and video distortion specs are relaxed. |
| LMH6629MA/NOPB | Lower 5.5nV/√Hz noise but 250MHz –3dB bandwidth and no specified differential phase/gain data; not characterized for video standards. | Better for general-purpose instrumentation amplification than broadcast video; lacks documented compliance with SMPTE/ITU-R metrics. | Choose LMH6629MA/NOPB for low-noise sensor interfaces where video-grade linearity is unnecessary. |
Compared with AD8000ARZ and LMH6629MA/NOPB, the MAX477EPA+ uniquely combines broadcast-validated video linearity (0.01°/0.01%), guaranteed 100pF capacitive load stability, and voltage-feedback design flexibility-making it the only option qualified for drop-in replacement in existing video distribution amplifier designs requiring ±5V operation.
Availability
MAX477EPA+ is available at Aetrix Electronics and suitable for broadcast video routing, medical ultrasound signal conditioning, and high-speed ADC preamplification requiring stable component supply across extended temperature ranges (–40°C to +85°C).
Supply support for MAX477EPA+ 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 MAX477EPA+ belongs to Maxim's high-speed op amp product line, engineered specifically for video signal integrity, RF baseband conditioning, and precision analog buffering where speed, linearity, and stability must coexist.
FAQ
What is the operating temperature range for the MAX477EPA+?
The MAX477EPA+ is rated for operation from –40°C to +85°C, matching the extended industrial temperature grade of the MAX477E_ _ family. This range is validated across all AC and DC specifications including 300MHz bandwidth, 1100V/µs slew rate, and 0.01°/0.01% differential phase/gain error-ensuring consistent video performance in broadcast enclosures and medical equipment environments.
Does the MAX477EPA+ require external compensation for unity-gain stability?
No, the MAX477EPA+ is unity-gain stable by design and does not require external compensation components. Its internal compensation ensures stability with gain ≥ +1 or ≤ –1 configurations, including voltage followers. This is confirmed in the datasheet's "Unity-Gain Stable" feature listing and verified in Typical Operating Characteristics plots showing stable pulse response at AV = +1 with 0pF and 100pF loads.
Can the MAX477EPA+ drive a 50Ω load directly?
Yes, the MAX477EPA+ is explicitly characterized to drive 50Ω loads, delivering ±2Vp-p output with 200MHz full-power bandwidth and <–58dB THD at 10MHz. Its 8mA quiescent current and short-circuit protected output enable robust 50Ω termination in RF test equipment and high-speed data acquisition systems without external current-boosting circuitry.
What is the maximum capacitive load the MAX477EPA+ can drive without oscillation?
The MAX477EPA+ is guaranteed stable with capacitive loads up to 100pF, as stated in the Features section and verified in Typical Operating Characteristics (Figure 4). At 100pF, measurable peaking occurs but no oscillation-making it suitable for driving ADC inputs (e.g., MAX100/MAX101) or moderate-length PCB traces without isolation resistors.
Is the MAX477EPA+ pin-compatible with other packages in the MAX477 family?
No-the MAX477EPA+ (8-pin DIP) shares the same pinout as the MAX477ESA (SO) and MAX477EUA (µMAX), but differs from the MAX477EUK-T (SOT23-5), which has only five pins and a distinct pin mapping. The DIP/SO/µMAX variants use Pins 1–5 and 7–8 as functional (OUT, IN–, IN+, VEE, VCC, N.C.), while SOT23 omits two N.C. pins and reassigns VEE/IN–/IN+/VCC/OUT to a 5-pin footprint.
MAX477EPA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 1100V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- -
- Current - Input Bias:
- -
- Voltage - Input Offset:
- -
- Current - Supply:
- -
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- -
- Voltage - Supply Span (Max):
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX477EPA+ FAQ
1.How can I place an order for MAX477EPA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX477EPA+ 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 MAX477EPA+ reliable?
The price and inventory of MAX477EPA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX477EPA+ is usually 5 days.
3.What payment methods are accepted for MAX477EPA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX477EPA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX477EPA+?
MAX477EPA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX477EPA+ 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 MAX477EPA+?
For technical support, including MAX477EPA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX477EPA+ requirements.
6.How does Aetrix verify that MAX477EPA+ is sourced from the original manufacturer or authorized distributors?
All MAX477EPA+ 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 MAX477EPA+ meets industry standards.
7.What is the process for return or replacement of MAX477EPA+?
All MAX477EPA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX477EPA+, 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 MAX477EPA+ part is unused and in its original packaging.
Return procedure for MAX477EPA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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