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Analog Devices Inc./Maxim Integrated MAX4105ESA+
- Part No.:
- MAX4105ESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4105ESA+.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,727
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Product details
Overview
MAX4105ESA+ from Maxim Integrated is a unity-gain-unstable, high-speed voltage-feedback operational amplifier optimized for minimum closed-loop gain of +5V/V, delivering 410MHz -3dB bandwidth, 1400V/µs slew rate, and 2.1nV/√Hz input voltage noise density. It operates on ±3.5V to ±5.5V dual supplies, draws 27mA quiescent current, and drives ±70mA into loads - ideal for video ADC preamplification and high-fidelity pulse amplification in telecom infrastructure.
For engineers reviewing the MAX4105ESA+ datasheet, MAX4105ESA+ pinout, MAX4105ESA+ application, or MAX4105ESA+ equivalent, key selection criteria include its +5V/V minimum stable gain requirement, SOT23-5 package constraints, differential gain/phase error (0.02%/0.02°), and 100MHz 0.1dB gain flatness - all critical for precision video line driving and ultrasound signal conditioning.
Technical Context
The MAX4105ESA+ employs a voltage-feedback architecture with internal compensation tailored for closed-loop gains ≥+5V/V, enabling stable operation without external compensation networks. Its 410MHz bandwidth and 1400V/µs slew rate support fast transient response in wideband analog signal paths.
It features rail-to-rail output swing capability (±3.7V at RL = 100kΩ), low input offset voltage (±1mV max), and high output current drive (±70mA), making it suitable for driving terminated coaxial cables and capacitive ADC inputs while maintaining low distortion (-88dBc SFDR at 5MHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth (-3dB) | 410MHz - supports high-frequency video and RF baseband signals up to ~300MHz usable range. |
| Slew Rate | 1400V/µs - enables clean 2Vp-p pulse reproduction at ≤10ns rise time without slewing distortion. |
| Voltage Noise Density | 2.1nV/√Hz at 1MHz - ensures minimal added noise in low-amplitude signal chains like ultrasound front-ends. |
| Supply Current | 27mA - balances speed and power efficiency for space-constrained, thermally sensitive designs. |
| Output Drive | ±70mA - directly drives 75Ω video lines or 100Ω ADC input networks without external buffers. |
| Input Offset Voltage | ±1mV max - reduces DC error accumulation in multi-stage gain blocks used in active filters. |
| Differential Gain/Phase | 0.02%/0.02° (NTSC, RL = 150Ω) - preserves color fidelity in broadcast-quality video buffering applications. |
Pinout & Package
The MAX4105ESA+ is housed in a 5-pin SOT23-5 surface-mount package with exposed pad (ES suffix), measuring 2.9mm × 1.6mm × 1.1mm. Pin 1 is marked with a dot; pin numbering follows standard SOT23 orientation (top view, notch left).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier Output | Delivers amplified signal; requires back-termination (e.g., 75Ω) when driving coaxial cable to prevent reflections. |
| 2 (IN−) | Inverting Input | Accepts feedback network connection; input bias current (≤70µA) must be balanced against IN+ for offset minimization. |
| 3 (IN+) | Noninverting Input | Reference input node; source impedance should be minimized to reduce noise contribution from input bias current. |
| 4 (VEE) | Negative Power Supply | Connects to −3.5V to −5.5V rail; requires local 1nF + 0.1µF ceramic bypass to ground plane for stability. |
| 5 (VCC) | Positive Power Supply | Connects to +3.5V to +5.5V rail; same bypassing as VEE essential to suppress supply-induced distortion. |
Key Features
| Feature | Design Value |
|---|---|
| +5V/V Minimum Stable Gain | Enables higher closed-loop gain without oscillation, reducing need for external compensation components in gain ≥5 circuits. |
| 100MHz 0.1dB Gain Flatness | Maintains amplitude consistency across NTSC/PAL video bandwidths, eliminating post-processing equalization. |
| Low Differential Gain/Phase Error | 0.02%/0.02° ensures accurate chrominance/luminance separation in composite video signal paths. |
| High Output Current Drive | ±70mA allows direct interface to 75Ω video lines or low-impedance ADC inputs without buffer stages. |
| Ultra-Low Input Voltage Noise | 2.1nV/√Hz dominates total input-referred noise in impedance-matched sources (<1kΩ), preserving SNR. |
Applications
| Video ADC Preamp | Pulse/RF Telecom Applications |
|---|---|
|
Use Scenario: Amplifying analog video signals prior to digitization in broadcast-grade SD/HD capture systems. IC Role / Device Role / Timing Role: High-fidelity preamplifier providing gain, DC restoration, and impedance matching before ADC sampling. Use Value: 0.02% differential gain error and 410MHz bandwidth preserve color accuracy and edge sharpness in 1080p60 video streams. |
Use Scenario: Conditioning short-duration RF pulses in radar receiver front-ends and optical burst-mode receivers. IC Role / Device Role / Timing Role: Fast-settling gain block shaping pulse envelopes with minimal overshoot or ringing. Use Value: 1400V/µs slew rate and 10ns pulse response enable faithful reproduction of sub-10ns rise-time pulses. |
| Ultrasound Signal Chain | Active Filters |
|
Use Scenario: Low-noise amplification of weak echo signals from piezoelectric transducers in medical imaging systems. IC Role / Device Role / Timing Role: First-stage LNA in multi-channel beamformer ASICs, operating at 5–15MHz center frequencies. Use Value: 2.1nV/√Hz input noise density maximizes dynamic range for detecting µV-level echoes amid system thermal noise. |
Use Scenario: Implementing high-Q, high-frequency bandpass filters in spectrum analyzers and signal intelligence receivers. IC Role / Device Role / Timing Role: Active filter core in multiple-feedback (MFB) or state-variable topologies requiring wide GBW and low distortion. Use Value: -88dBc SFDR at 5MHz ensures spurious-free operation in adjacent-channel rejection-critical filtering applications. |
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 |
|---|---|---|---|
| MAX4304ESA+ | Compensated for +2V/V min gain; 740MHz bandwidth, 1000V/µs slew rate, lower noise floor (2.1nV/√Hz same), but reduced gain stability margin at +5V/V. | Better suited for moderate-gain, ultra-wideband applications (e.g., RF IF amplification) where bandwidth >600MHz is prioritized over high closed-loop gain. | Select MAX4304ESA+ only if circuit gain is fixed at +2V/V and bandwidth >700MHz is required; not drop-in compatible due to different compensation. |
| LMH6703MF/NOPB | Unity-gain stable; 1.8GHz bandwidth, 3000V/µs slew rate, higher supply current (35mA), 3.3nV/√Hz noise, SOT23-5 package. | Preferred for ultra-high-speed, variable-gain or unity-gain configurations where layout allows tighter thermal management. | Choose LMH6703MF/NOPB when unity-gain stability is mandatory or when >1GHz small-signal bandwidth is needed - verify PCB layout for RF integrity. |
Compared with MAX4304ESA+ and LMH6703MF/NOPB, the MAX4105ESA+ offers optimal trade-off between +5V/V gain stability, 410MHz bandwidth, and 2.1nV/√Hz noise - uniquely fitting fixed-gain video and ultrasound preamp roles where gain ≥5 and low added noise are non-negotiable.
Availability
MAX4105ESA+ is available at Aetrix Electronics and suitable for video line driving, ultrasound front-end amplification, and high-speed ADC buffering requiring stable component supply across industrial, medical, and broadcast equipment lifecycles.
Supply support for MAX4105ESA+ 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 demanding signal-chain and power applications.
The MAX4104/MAX4105/MAX4304/MAX4305 family was designed specifically for ultra-low-distortion, high-bandwidth analog signal conditioning in video, telecom, and medical imaging systems where speed, noise, and fidelity are co-critical.
FAQ
What is the minimum stable gain for MAX4105ESA+?
The MAX4105ESA+ is internally compensated for a minimum closed-loop gain of +5V/V. Operating at gains below +5V/V may cause instability or peaking in frequency response. This differs from the unity-gain-stable MAX4104ESA+, and users must design feedback networks accordingly to ensure phase margin >45° across the operating bandwidth.
Does MAX4105ESA+ support single-supply operation?
No, the MAX4105ESA+ is specified only for dual-supply operation from ±3.5V to ±5.5V. Its input common-mode range extends from −2.8V to +4.1V and output swing reaches ±3.7V, but it lacks rail-to-rail input or true single-supply biasing capability. For single-ended systems, external level-shifting or a dedicated single-supply op amp (e.g., MAX44260) is required.
What is the maximum capacitive load the MAX4105ESA+ can drive without oscillation?
The MAX4105ESA+ remains stable driving up to 10pF of capacitive load without external isolation. Beyond that, an output series resistor (RISO) is required - e.g., 15Ω for 47–83pF loads - to dampen resonance caused by output impedance interacting with capacitance. Layout parasitics must also be minimized to avoid unintended loading.
How does the MAX4105ESA+ compare to MAX4104ESA+ in video applications?
The MAX4105ESA+ provides higher gain stability (+5V/V vs. +1V/V) and superior differential phase error (0.02° vs. 0.01°), but narrower bandwidth (410MHz vs. 625MHz). In video ADC preamp roles requiring ≥5× gain, MAX4105ESA+ delivers better DC accuracy and lower harmonic distortion, while MAX4104ESA+ suits unity-gain cable drivers needing wider flatness.
Is the SOT23-5 package of MAX4105ESA+ RoHS-compliant and lead-free?
Yes, the MAX4105ESA+ carries the "+" suffix per Maxim's ordering nomenclature, indicating RoHS-compliant, lead-free construction with matte tin lead finish and green molding compound. It meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) and is qualified for reflow soldering per IPC/JEDEC J-STD-020.
MAX4105ESA+ 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:
- Last Time Buy
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 1400V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 410 MHz
- Current - Input Bias:
- 32 µA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 20mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 7 V
- Voltage - Supply Span (Max):
- 11 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX4105ESA+ FAQ
1.How can I place an order for MAX4105ESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4105ESA+ 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 MAX4105ESA+ reliable?
The price and inventory of MAX4105ESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4105ESA+ is usually 5 days.
3.What payment methods are accepted for MAX4105ESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4105ESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4105ESA+?
MAX4105ESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4105ESA+ 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 MAX4105ESA+?
For technical support, including MAX4105ESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4105ESA+ requirements.
6.How does Aetrix verify that MAX4105ESA+ is sourced from the original manufacturer or authorized distributors?
All MAX4105ESA+ 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 MAX4105ESA+ meets industry standards.
7.What is the process for return or replacement of MAX4105ESA+?
All MAX4105ESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4105ESA+, 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 MAX4105ESA+ part is unused and in its original packaging.
Return procedure for MAX4105ESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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