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Analog Devices Inc./Maxim Integrated MAX4201EUK-T
- Part No.:
- MAX4201EUK-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX4201EUK-T.pdf
- Description:
- IC BUFFER 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,525
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Product details
Overview
MAX4201EUK-T from Maxim Integrated is a single-channel, ultra-high-speed, open-loop buffer IC optimized for driving 50Ω transmission lines in high-frequency signal-path applications. It delivers 780MHz -3dB bandwidth, 4200V/μs slew rate, ±52mA output current, and integrated 50Ω output termination resistor - enabling direct coaxial cable interface without external components. It is commonly used as an ADC input driver in IF sampling receivers and high-speed data acquisition systems.
For engineers reviewing the MAX4201EUK-T datasheet, MAX4201EUK-T pinout, MAX4201EUK-T application, or MAX4201EUK-T equivalent, key selection criteria include its open-loop architecture, 50Ω matched output impedance, low 2.1nV/√Hz voltage-noise density, and SOT23-5 package compatibility with space-constrained RF front-ends.
Technical Context
The MAX4201EUK-T employs a proprietary open-loop architecture that eliminates dominant-pole compensation, delivering near-constant 405ps group delay across its full frequency range. Its internal 50Ω termination resistor forms a precise voltage divider with the 50Ω load, ensuring impedance-matched signal integrity without external resistors.
This architecture avoids phase-shift-induced instability under capacitive loading - unlike closed-loop amplifiers - while maintaining stable operation up to 220pF load capacitance. The device operates from ±4V to ±5.5V dual supplies and achieves 280MHz 0.1dB gain flatness for minimal amplitude distortion in wideband IF/RF paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| -3dB Bandwidth | 780MHz - supports full-power signal delivery up to ~490MHz (FPBW), suitable for Nyquist-rate sampling of >200MHz IF signals. |
| Slew Rate | 4200V/μs - enables clean 2V-step response in ≤12ns (0.1% settling), critical for pulse fidelity in digital transmission line drivers. |
| Output Impedance | 50Ω (integrated) - provides exact source termination for 50Ω coaxial cables, eliminating reflections and preserving signal rise time. |
| Voltage-Noise Density | 2.1nV/√Hz at 1MHz - contributes <0.5mV RMS noise in 100MHz bandwidth, minimizing SNR degradation before ADC inputs. |
| Supply Current | 2.2mA per buffer - enables low-power, multi-channel analog front-ends without thermal derating in compact SOT23 packages. |
| Output Voltage Swing | ±2.1V into 50Ω - delivers 17.6dBm into 50Ω, sufficient to drive high-performance ADCs like the AD96xx family directly. |
| Operating Temp Range | -40°C to +85°C - qualified for industrial and communications infrastructure environments including base station IF modules. |
Pinout & Package
The MAX4201EUK-T is housed in a 5-pin SOT23-5 package (package code U5-1), with exposed pad not connected. Pin 1 is marked by a dot or beveled edge; the package is RoHS-compliant and moisture-sensitive level 1.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | N.C. | No internal connection - must be left floating or grounded per layout best practices; no routing required. |
| 2 | VEE | Negative power supply pin - requires local 0.1μF ceramic bypass to ground; shared return for both supply rails. |
| 3 | IN | Differential-input-capable single-ended buffer input - presents 500kΩ || 2pF impedance; benefits from 50Ω source termination. |
| 4 | VCC | Positive power supply pin - requires local 0.1μF ceramic bypass to ground; decoupling must be placed within 2mm. |
| 5 | OUT | 50Ω-terminated output - delivers matched 50Ω source impedance; connects directly to coaxial cable or 50Ω PCB trace without series resistor. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 50Ω output termination | Eliminates need for external series resistor, reducing BOM count and PCB area while guaranteeing impedance match to 50Ω systems. |
| Open-loop architecture | Removes dominant-pole compensation, enabling flat group delay (405ps) and stable operation with >200pF capacitive loads. |
| Low 2.1nV/√Hz input voltage noise | Preserves dynamic range when driving 14–16-bit ADCs; contributes <0.5mV RMS integrated noise over 100MHz bandwidth. |
| 4200V/μs slew rate | Supports full-scale 2V step response in 12ns (0.1% settling), essential for accurate pulse and symbol reconstruction in data comms. |
| ±52mA output drive into 30Ω | Enables robust drive into mismatched or reactive loads, including unterminated stubs or filter networks in RF signal chains. |
Applications
| IF Sampling Receiver Front-End | High-Speed DAC Output Buffer |
|---|---|
|
Use Scenario: Conditioning IF signals (e.g., 70MHz or 140MHz) before digitization in software-defined radio receivers. IC Role / Device Role / Timing Role: Single-ended open-loop buffer providing gain-of-0.5 (due to 50Ω divider), low-noise amplification, and 50Ω source termination for ADC input drive. Use Value: Maintains 280MHz 0.1dB gain flatness and 405ps constant group delay, preventing phase distortion across wide IF bands. |
Use Scenario: Isolating and driving high-speed DAC outputs (e.g., AD916x) into 50Ω transmission lines for optical or RF modulator interfaces. IC Role / Device Role / Timing Role: Output buffer with integrated 50Ω termination, absorbing DAC output reactance and suppressing reflections. Use Value: Enables clean 2Vpp signal delivery at >500MSPS without external matching, reducing jitter and harmonic distortion (SFDR >45dBc @100MHz). |
| Wireless LAN Baseband Driver | Digital Transmission Line Driver |
|
Use Scenario: Driving IQ baseband signals from WLAN chipsets (e.g., QCA988x) into upconverters or filters in 2.4/5GHz access points. IC Role / Device Role / Timing Role: Low-noise, high-slew buffer isolating sensitive DAC outputs while presenting 50Ω source impedance to downstream stages. Use Value: 0.8pA/√Hz current noise minimizes distortion on high-impedance filter nodes; 2.2mA quiescent current supports multi-channel integration. |
Use Scenario: Transmitting serialized video or high-speed serial data (e.g., SMPTE 292, HD-SDI) over coaxial cable in broadcast equipment. IC Role / Device Role / Timing Role: Line driver with precise 50Ω source termination, ensuring signal integrity over 100m+ RG-6 cable runs. Use Value: Integrated termination eliminates timing skew from discrete resistor placement; 780MHz bandwidth supports >3Gbps data rates with low ISI. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4200EUK-T | No internal termination; output impedance ≈8Ω; requires external 42Ω series resistor for 50Ω drive. | Lacks integrated termination - increases layout complexity and risk of impedance mismatch in RF layouts. | Select when system requires variable gain or non-50Ω load drive; not drop-in for MAX4201EUK-T. |
| LMH6723MA/NOPB | Higher 1.8mA supply current; 650MHz -3dB bandwidth; no integrated termination; SO-8 package only. | Requires external 42Ω resistor and careful layout to emulate 50Ω source; lacks guaranteed 50Ω output ZOUT. | Choose for cost-sensitive industrial designs where 50Ω precision is secondary to DC accuracy or supply flexibility. |
Compared with MAX4200EUK-T and LMH6723MA/NOPB, the MAX4201EUK-T uniquely integrates a laser-trimmed 50Ω output resistor in SOT23-5, delivering guaranteed source termination, smaller footprint, and simplified RF layout - critical for production-grade wireless and instrumentation signal chains.
Availability
MAX4201EUK-T is available at Aetrix Electronics and suitable for high-speed data acquisition, IF sampling receivers, and wireless LAN baseband interfaces requiring stable component supply across industrial temperature ranges and long-lifecycle programs.
Supply support for MAX4201EUK-T 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 RF solutions for communications, industrial, and computing markets.
The MAX4200–MAX4205 product line was designed specifically for ultra-wideband, low-noise, open-loop buffering in RF/IF signal chains - prioritizing group-delay flatness, capacitive-load stability, and integrated termination over DC precision.
FAQ
What is the function of the N.C. pin on the MAX4201EUK-T?
The N.C. (No Connection) pin on the MAX4201EUK-T is not internally connected and serves no electrical function. It must remain unconnected - neither tied to ground nor VCC - to avoid parasitic coupling or mechanical stress on the die bond wire. This pin is present for mechanical symmetry in the SOT23-5 package and has no impact on MAX4201EUK-T performance or biasing.
Can the MAX4201EUK-T drive a 75Ω load effectively?
No - the MAX4201EUK-T integrates a 50Ω output termination resistor optimized for 50Ω systems. Driving a 75Ω load creates an impedance mismatch, resulting in ~1.8dB signal loss and potential reflections. For 75Ω applications, use the MAX4202EUK-T (75Ω termination) or MAX4200EUK-T with external resistor network; MAX4201EUK-T performance is not characterized or guaranteed under 75Ω loading.
Does the MAX4201EUK-T require external compensation capacitors?
No - the MAX4201EUK-T uses an open-loop architecture with no internal feedback path, so it does not require external compensation capacitors. Its stability is inherent across all specified loads, including up to 220pF capacitive load. Adding compensation would degrade bandwidth and slew rate; the device is designed for direct connection to 50Ω traces or cables without additional components.
What is the maximum allowable supply voltage for the MAX4201EUK-T?
The MAX4201EUK-T supports dual-supply operation from ±4V to ±5.5V (i.e., VCC = +4V to +5.5V, VEE = -4V to -5.5V). Exceeding ±5.5V violates Absolute Maximum Ratings and risks permanent damage. Operation at ±5V is standard and delivers optimal bandwidth and output swing; derating is not required below ±5.5V, but PSR degrades slightly above ±5V.
How does the integrated 50Ω resistor affect gain in the MAX4201EUK-T?
The integrated 50Ω resistor forms a voltage divider with the 50Ω load, resulting in a nominal small-signal gain of 0.50 V/V (–6dB). This is intentional and documented in the datasheet (AV = 0.42 to 0.58). The MAX4201EUK-T is not a unity-gain amplifier - its gain is fixed by termination topology, and system-level gain must be accounted for in upstream or downstream stages when using MAX4201EUK-T.
MAX4201EUK-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- Buffer
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 4200V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 780 MHz
- Current - Input Bias:
- 800 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 2.2mA
- Current - Output / Channel:
- 52 mA
- Voltage - Supply Span (Min):
- 8 V
- Voltage - Supply Span (Max):
- 11 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX4201EUK-T FAQ
1.How can I place an order for MAX4201EUK-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4201EUK-T 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 MAX4201EUK-T reliable?
The price and inventory of MAX4201EUK-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4201EUK-T is usually 5 days.
3.What payment methods are accepted for MAX4201EUK-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4201EUK-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4201EUK-T?
MAX4201EUK-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4201EUK-T 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 MAX4201EUK-T?
For technical support, including MAX4201EUK-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4201EUK-T requirements.
6.How does Aetrix verify that MAX4201EUK-T is sourced from the original manufacturer or authorized distributors?
All MAX4201EUK-T 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 MAX4201EUK-T meets industry standards.
7.What is the process for return or replacement of MAX4201EUK-T?
All MAX4201EUK-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4201EUK-T, 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 MAX4201EUK-T part is unused and in its original packaging.
Return procedure for MAX4201EUK-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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