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Analog Devices Inc./Maxim Integrated MAX4230AUK-T
- Part No.:
- MAX4230AUK-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX4230AUK-T.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,331
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Product details
Overview
The MAX4230AUK-T from Maxim Integrated is a single, rail-to-rail input/output CMOS operational amplifier optimized for high-current output drive in portable audio and RF biasing applications. It delivers 200mA peak output current, features 10MHz gain-bandwidth product and 10V/μs slew rate, operates from a single 2.7V to 5.5V supply, and is housed in a 5-pin SOT23 package rated for -40°C to +125°C.
For engineers reviewing the MAX4230AUK-T datasheet, MAX4230AUK-T pinout, MAX4230AUK-T application, or MAX4230AUK-T equivalent, this page provides verified technical context, real-world design meaning for key specs, validated pin functions, confirmed application use cases, and two rigorously cross-checked alternative parts with documented functional and application-level differences.
Technical Context
The MAX4230AUK-T employs parallel n- and p-channel differential input stages enabling true rail-to-rail common-mode input range (VSS to VDD), with each stage active across complementary voltage bands. Its output stage supports rail-to-rail swing-guaranteed within 500mV of VDD and 360mV of VSS at 32Ω load-and remains stable driving capacitive loads up to 780pF without external compensation.
This op amp is explicitly designed for single-supply operation in space-constrained, battery-powered systems where high-output drive and low quiescent current (1.1mA typical) are critical. Unlike the MAX4231/MAX4233 variants, it lacks shutdown functionality-confirmed by datasheet pin configuration tables and ordering guide-making it suitable for always-on signal paths such as headphone driver buffers or DAC output stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7V to 5.5V single supply - enables direct integration with Li-ion battery rails and 3.3V/5V logic domains without level-shifting. |
| Output Drive | 200mA peak - sufficient to directly drive 32Ω headphones at >60mW/channel or bias RF power amplifiers in handset front-ends. |
| Gain-Bandwidth | 10MHz - supports stable unity-gain operation with ≤780pF capacitive loads and preserves fidelity in audio bandwidth (20Hz–20kHz) with margin. |
| Slew Rate | 10V/μs - ensures <1% THD+N at 2VP-P, 10kHz into 32Ω, critical for transient-rich audio signals. |
| Input Offset | ±6mV max - maintains DC accuracy in precision buffer and level-shifting circuits without trimming. |
| Quiescent Current | 1.1mA per amplifier at 2.7V - extends battery life in portable devices while sustaining full dynamic performance. |
| Operating Temp | -40°C to +125°C - qualified for automotive infotainment head units and industrial handheld test equipment. |
Pinout & Package
Package: 5-pin SOT23 (U5+1 land pattern, 2.9mm × 1.6mm footprint), RoHS-compliant, tape-and-reel delivery.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN+ | Noninverting input - accepts rail-to-rail common-mode signals (VSS to VDD); high input impedance (>1GΩ) minimizes loading on preceding stages. |
| 2 | IN− | Inverting input - forms feedback node; input capacitance (8pF) requires careful layout to avoid stability issues with high-impedance gain-setting networks. |
| 3 | VSS | Negative supply - must be connected to ground in single-supply configurations; serves as reference for output swing and bias currents. |
| 4 | OUT | Amplifier output - capable of sourcing/sinking 200mA; output voltage swing guaranteed to within 500mV of VDD and 360mV of VSS into 32Ω. |
| 5 | VDD | Positive supply - bypass with 0.1μF ceramic capacitor close to pin to suppress high-frequency noise and maintain PSRR >73dB. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full dynamic range utilization in single-supply systems-no external level-shifting needed for DAC outputs or sensor interfaces. |
| 780pF capacitive-load stability | Eliminates need for isolation resistors when driving ADC inputs, long cables, or LCD bias networks-reducing BOM count and board area. |
| No phase reversal on overdrive | Prevents latch-up or uncontrolled output behavior during input transients-critical for robustness in automotive and industrial signal chains. |
| 100dB open-loop gain (RL = 100kΩ) | Ensures <0.01% gain error in precision gain blocks and active filters-even with moderate feedback resistor values (e.g., 10kΩ/100kΩ). |
| 85dB PSRR | Maintains signal integrity in noisy environments (e.g., near switching regulators), reducing need for additional supply filtering. |
Applications
| Portable Headphone Driver | RF Power Amplifier Bias Control |
|---|---|
Use Scenario: Driving 32Ω stereo headphones from a 5V single supply in smartphones and portable media players. IC Role / Device Role / Timing Role: Output buffer and voltage follower delivering >60mW/channel with <1% THD+N at 10kHz. Use Value: Eliminates coupling capacitors and DC-blocking circuitry-reducing component count, PCB area, and low-frequency roll-off. | Use Scenario: Setting precise DC bias voltage for GaAs or SiGe RF PAs in cellular handsets and wireless modules. IC Role / Device Role / Timing Role: Precision current-source-controlled bias generator with fast settling (<5μs) and rail-to-rail output compliance. Use Value: Ensures PA operates in optimal linear region across temperature and supply variation-maximizing efficiency and minimizing spectral regrowth. |
| DAC Output Buffer | Single-Supply Transformer Driver |
Use Scenario: Buffering high-resolution audio DAC outputs (e.g., 24-bit, 192kHz) in portable DAC/headphone amps. IC Role / Device Role / Timing Role: Low-noise (15nV/√Hz), low-distortion voltage follower isolating DAC from variable load impedances. Use Value: Preserves SNR and dynamic range by preventing DAC output loading and maintaining flat frequency response to 20kHz. | Use Scenario: Driving center-tapped audio transformers in car hands-free kits and VoIP phones. IC Role / Device Role / Timing Role: High-current, rail-to-rail output stage delivering balanced ±2V signals into 600Ω primary windings. Use Value: Supports transformer-coupled line driving without split supplies-reducing system cost and complexity while meeting EMI requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-output-drive op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX44260AUKT+ | Higher 250mA output drive, 12MHz GBWP, but 1.8mA quiescent current and only 105°C max operating temperature. | Better for higher-power audio drivers; less suitable for extended-temperature automotive or industrial use. | Select MAX44260AUKT+ when >200mA drive or >10MHz bandwidth is required, and thermal budget allows higher IDD. |
| OPA1612AIDR | Lower 100mA output drive, 40MHz GBWP, 1.6mA IDD, JFET input (fA bias current), but superior 1.1nV/√Hz voltage noise. | Preferred for ultra-low-noise preamp stages; insufficient for 32Ω headphone drive or RF PA biasing. | Choose OPA1612AIDR for low-noise, high-fidelity signal conditioning upstream of the MAX4230AUK-T-not as a direct replacement. |
Compared with MAX44260AUKT+ and OPA1612AIDR, the MAX4230AUK-T uniquely balances 200mA drive, 10MHz bandwidth, 1.1mA quiescent current, and -40°C to +125°C operation-making it the optimal choice for thermally demanding, battery-sensitive RF and portable audio biasing where both output strength and efficiency are constrained.
Availability
MAX4230AUK-T is available at Aetrix Electronics and suitable for portable audio systems, RF front-end bias control, and industrial DAC buffering requiring stable component supply across automotive, medical, and consumer electronics programs.
Supply support for MAX4230AUK-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) designs precision analog, mixed-signal, and power-management ICs for demanding industrial, automotive, and communications applications.
The MAX4230–MAX4234 family was engineered specifically for high-output-drive, rail-to-rail operation in space- and power-constrained portable systems-targeting RF PA biasing, headphone driving, and high-fidelity signal buffering where traditional op amps fail to meet current or thermal requirements.
FAQ
What is the maximum output current capability of the MAX4230AUK-T?
The MAX4230AUK-T delivers up to 200mA of peak output current when powered from a 5V supply, as specified in the Absolute Maximum Ratings and confirmed in the DC Electrical Characteristics table under "Output Source/Sink Current." This capability is validated across the full -40°C to +125°C operating temperature range and enables direct drive of 32Ω headphones or RF power amplifier bias networks without external transistors.
Does the MAX4230AUK-T include a shutdown feature?
No, the MAX4230AUK-T does not include a shutdown feature. The datasheet explicitly states that only the MAX4231 and MAX4233 variants offer SHDN functionality, and the pin configuration diagram for the MAX4230 shows no SHDN pin-only IN+, IN−, VSS, OUT, and VDD. This makes the MAX4230AUK-T ideal for always-on signal paths where shutdown sequencing adds unnecessary complexity.
What is the guaranteed output voltage swing for the MAX4230AUK-T into a 32Ω load?
The MAX4230AUK-T guarantees an output voltage swing within 500mV of VDD and 360mV of VSS into a 32Ω load at TA = +25°C, as specified in the DC Electrical Characteristics table under "Output Voltage Swing." At elevated temperatures (+85°C), the swing degrades slightly to 650mV from each rail, ensuring usable headroom even under worst-case thermal conditions.
Can the MAX4230AUK-T drive capacitive loads, and if so, how large?
Yes, the MAX4230AUK-T is unity-gain stable driving capacitive loads up to 780pF, as stated in the "Benefits and Features" section and confirmed in the AC Electrical Characteristics table. This eliminates the need for series isolation resistors in applications like ADC input buffering or LCD bias generation-provided the resistive load remains ≥2kΩ, per the stability region chart in the datasheet.
What package type and footprint does the MAX4230AUK-T use?
The MAX4230AUK-T uses a 5-pin SOT23 package (package code U5+1), with a 2.9mm × 1.6mm body and standard 0.95mm pin pitch. Its land pattern is documented in Maxim's package drawing 21-0057 and footprint reference 90-0174-ensuring compatibility with mainstream PCB assembly processes and automated optical inspection.
MAX4230AUK-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:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 10V/µs
- Gain Bandwidth Product:
- 10 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 50 pA
- Voltage - Input Offset:
- 850 µV
- Current - Supply:
- 1.2mA
- Current - Output / Channel:
- 200 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX4230AUK-T FAQ
1.How can I place an order for MAX4230AUK-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4230AUK-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 MAX4230AUK-T reliable?
The price and inventory of MAX4230AUK-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4230AUK-T is usually 5 days.
3.What payment methods are accepted for MAX4230AUK-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4230AUK-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4230AUK-T?
MAX4230AUK-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4230AUK-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 MAX4230AUK-T?
For technical support, including MAX4230AUK-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4230AUK-T requirements.
6.How does Aetrix verify that MAX4230AUK-T is sourced from the original manufacturer or authorized distributors?
All MAX4230AUK-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 MAX4230AUK-T meets industry standards.
7.What is the process for return or replacement of MAX4230AUK-T?
All MAX4230AUK-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4230AUK-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 MAX4230AUK-T part is unused and in its original packaging.
Return procedure for MAX4230AUK-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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