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Analog Devices Inc./Maxim Integrated MAX4305ESA+T
- Part No.:
- MAX4305ESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4305ESA+T.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,095
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Product details
Overview
The MAX4305ESA+T from Maxim Integrated is a unity-gain-unstable, high-speed voltage-feedback operational amplifier optimized for minimum closed-loop gain of +10V/V, delivering 340MHz -3dB bandwidth and 1400V/µs slew rate in a 5-pin SOT23 package. It features 2.1nV/√Hz input voltage noise density, -88dBc spurious-free dynamic range at 5MHz (RL = 100Ω), and ±70mA output drive capability. It serves as a precision video line driver or ADC input buffer in high-fidelity analog signal chains.
For engineers reviewing the MAX4305ESA+T datasheet, MAX4305ESA+T pinout, MAX4305ESA+T application, or MAX4305ESA+T equivalent, key selection criteria include its +10V/V minimum stable gain requirement, 340MHz bandwidth under AVCL = +10, differential gain/phase error of 0.02%/0.02° (NTSC, RL = 150Ω), and compatibility with ±3.5V to ±5.5V dual supplies.
Technical Context
The MAX4305ESA+T employs a voltage-feedback architecture with internal compensation tailored for stable operation only at closed-loop gains ≥ +10V/V. Its wideband design achieves 100MHz 0.1dB gain flatness and supports full-power bandwidth up to 285MHz (VOUT = 2Vp-p).
This op amp delivers low distortion across video and RF bands: -88dBc SFDR at 5MHz and harmonic distortion below -70dBc (2nd/3rd) up to 100MHz. Its ±3.7V output swing into 100kΩ and ±3.5V into 100Ω enables robust driving of terminated coaxial lines and ADC inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| -3dB Bandwidth | 340MHz at AVCL = +10V/V - defines usable small-signal frequency range for high-gain video/telecom amplification |
| Slew Rate | 1400V/µs - supports fast transient response for 2Vp-p signals up to ~285MHz full-power bandwidth |
| Voltage Noise Density | 2.1nV/√Hz at 1MHz - ensures minimal added noise in low-level video preamp and ADC buffer stages |
| Spurious-Free Dynamic Range | -88dBc at 5MHz, RL = 100Ω - guarantees clean signal reproduction in baseband video and pulse applications |
| Output Current Drive | ±70mA - enables direct driving of 75Ω/150Ω video cables and heavy capacitive loads up to 10pF without oscillation |
| Differential Gain/Phase Error | 0.02%/0.02° (NTSC, RL = 150Ω) - preserves color fidelity in broadcast-quality video line drivers |
| Supply Voltage Range | ±3.5V to ±5.5V - supports flexible dual-rail operation in industrial and telecom power domains |
Pinout & Package
The MAX4305ESA+T is housed in a RoHS-compliant 5-pin SOT23-5 package (JEDEC MO-178AA), with exposed pad not internally connected. Pin 1 is marked by a dot or beveled edge; device orientation follows standard SOT23 top-view convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier Output | Low-impedance, high-current output node; requires back-termination for 75Ω cable driving |
| 2 (IN+) | Noninverting Input | High-impedance input with 1.5MΩ common-mode resistance; connects to signal source or feedback divider |
| 3 (IN-) | Inverting Input | High-impedance input used for feedback network connection; sensitive to layout parasitics |
| 4 (VEE) | Negative Power Supply | Connects to -3.5V to -5.5V rail; requires local 1nF + 0.1µF ceramic bypass to ground plane |
| 5 (VCC) | Positive Power Supply | Connects to +3.5V to +5.5V rail; bypassing identical to VEE; substrate tied to VEE per chip info |
Key Features
| Feature | Design Value |
|---|---|
| +10V/V minimum stable gain | Enables high-gain configurations without external compensation; prevents instability at AVCL < +10 |
| 340MHz -3dB bandwidth (AVCL = +10) | Supports wideband amplification of HD video baseband and RF IF signals up to ~300MHz |
| 0.02%/0.02° differential gain/phase error | Maintains NTSC/PAL color accuracy in professional video distribution systems |
| ±70mA output drive into 100Ω | Drives 75Ω coax directly with proper termination; eliminates need for external buffer stages |
| 2.1nV/√Hz input voltage noise | Minimizes SNR degradation in low-amplitude signal conditioning paths like ultrasound receive chains |
Applications
| Video Line Driver | ADC Input Buffer |
|---|---|
Use Scenario: Driving 75Ω coaxial cable in broadcast video equipment with NTSC/PAL compliance requirements. IC Role / Device Role / Timing Role: High-fidelity voltage amplifier with precise gain control and minimal phase distortion. Use Value: Preserves color fidelity via 0.02% differential gain error and supports 100MHz 0.1dB flatness for multi-standard video support. |
Use Scenario: Buffering high-speed analog inputs to 8–16-bit ADCs sampling at >50MSPS in test instrumentation. IC Role / Device Role / Timing Role: Fast-settling, low-noise input stage that charges ADC sample-and-hold capacitance. Use Value: 1400V/µs slew rate and ±70mA drive ensure accurate 2Vp-p step response within 25ns to 0.1%, minimizing aperture uncertainty. |
| Ultrasound Receive Amplifier | Active Filter Stage |
Use Scenario: First-stage amplification of weak echo signals from piezoelectric transducers in portable ultrasound systems. IC Role / Device Role / Timing Role: Low-noise, wideband transimpedance or voltage gain stage before digitization. Use Value: 2.1nV/√Hz noise density maximizes SNR in sub-10mV signal paths; 340MHz bandwidth accommodates harmonics up to 15MHz imaging frequencies. |
Use Scenario: Implementing high-Q, low-distortion bandpass filters in RF front-ends or spectrum analyzers. IC Role / Device Role / Timing Role: Active gain element in multiple-feedback or state-variable filter topologies. Use Value: -88dBc SFDR and -70dBc harmonic distortion at 100MHz enable clean filtering of narrowband signals without intermodulation artifacts. |
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+ | +2V/V minimum gain; 740MHz bandwidth; 1000V/µs slew rate | Better suited for medium-gain video buffers and RF IF amplifiers requiring wider bandwidth | Select MAX4304ESA+ when gain ≥ +2V/V and bandwidth > 500MHz is required; not stable at AVCL = +10 |
| THS3201DGN | +1V/V unity-gain stable; 1.8GHz bandwidth; 6000V/µs slew rate; higher quiescent current (22mA vs 27mA) | Preferred for ultra-wideband applications where unity-gain stability and >1GHz bandwidth are mandatory | Choose THS3201DGN for unity-gain designs or when >1GHz small-signal bandwidth is critical; MAX4305ESA+T offers lower noise (2.1 vs 3.3nV/√Hz) |
Compared with MAX4304ESA+ and THS3201DGN, the MAX4305ESA+T provides optimal trade-off between high-gain stability (+10V/V), low noise, and NTSC-grade video fidelity-making it uniquely suitable for fixed-gain, high-fidelity video line driving where gain > +5V/V is required.
Availability
The MAX4305ESA+T is available at Aetrix Electronics and suitable for video line driving, high-speed ADC buffering, ultrasound signal conditioning, and active filter design requiring stable component supply and guaranteed long-term sourcing.
Supply support for MAX4305ESA+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 power management ICs for industrial, communications, and consumer applications.
The MAX4305ESA+T belongs to Maxim's ultra-high-speed op amp family designed specifically for low-noise, low-distortion video, telecommunications, and medical imaging signal chains operating at DC to 340MHz.
FAQ
What is the minimum stable gain for the MAX4305ESA+T?
The MAX4305ESA+T is internally compensated for minimum closed-loop gain of +10V/V. Operation at gains below +10V/V is not guaranteed stable and may result in peaking or oscillation. This distinguishes it from the MAX4304ESA+ (+2V/V min) and MAX4104ESA+ (unity-gain stable). Always verify stability with actual load conditions using AC simulation or bench testing for the MAX4305ESA+T.
Does the MAX4305ESA+T support single-supply operation?
No, the MAX4305ESA+T is specified exclusively for dual-supply operation over ±3.5V to ±5.5V. Its input common-mode voltage range is -2.8V to +4.1V and output swing is asymmetric (±3.5V into 100Ω), indicating inherent bipolar biasing. Single-supply use would violate absolute maximum ratings and degrade performance; for single-rail designs, consider the MAX4382 or similar rail-to-rail alternatives instead of the MAX4305ESA+T.
What is the recommended power-supply bypassing for the MAX4305ESA+T?
Per Maxim's layout guidelines, place 1nF and 0.1µF ceramic capacitors as close as possible between each supply pin (VCC and VEE) and the solid ground plane. Use surface-mount components with shortest possible traces. Optionally add a 10µF tantalum capacitor at the PCB power entry point. The MAX4305ESA+T's high bandwidth makes improper bypassing a primary cause of instability or degraded SFDR-so strict adherence to this scheme is essential for reliable MAX4305ESA+T operation.
Can the MAX4305ESA+T drive 75Ω coaxial cable directly?
Yes, the MAX4305ESA+T can drive 75Ω coax when configured with proper back-termination: place a 75Ω resistor in series with the OUT pin, and terminate the far end with 75Ω to ground. This configuration leverages the MAX4305ESA+T's ±70mA output drive and ±3.5V swing into 100Ω to deliver full-scale video signals while maintaining 0.02% differential gain accuracy. Avoid unterminated or parallel-terminated configurations, which risk reflections and distortion in the MAX4305ESA+T.
What is the maximum capacitive load the MAX4305ESA+T can drive without isolation?
The MAX4305ESA+T is characterized to drive up to 10pF of capacitive load without oscillation, though some peaking may occur in frequency response. For loads exceeding 10pF-or to suppress ringing in pulse applications-add an isolation resistor (RISO) between OUT and CL. Optimal RISO values range from 15Ω to 47Ω depending on load capacitance (per Figure 5 in the datasheet); using RISO trades bandwidth for stability in the MAX4305ESA+T.
MAX4305ESA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Last Time Buy
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 1400V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 340 MHz
- Current - Input Bias:
- 32 µA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 20mA
- Current - Output / Channel:
- 70 mA
- 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
MAX4305ESA+T FAQ
1.How can I place an order for MAX4305ESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4305ESA+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 MAX4305ESA+T reliable?
The price and inventory of MAX4305ESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4305ESA+T is usually 5 days.
3.What payment methods are accepted for MAX4305ESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4305ESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4305ESA+T?
MAX4305ESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4305ESA+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 MAX4305ESA+T?
For technical support, including MAX4305ESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4305ESA+T requirements.
6.How does Aetrix verify that MAX4305ESA+T is sourced from the original manufacturer or authorized distributors?
All MAX4305ESA+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 MAX4305ESA+T meets industry standards.
7.What is the process for return or replacement of MAX4305ESA+T?
All MAX4305ESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4305ESA+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 MAX4305ESA+T part is unused and in its original packaging.
Return procedure for MAX4305ESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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