1. Products
  2. Amplifiers
  3. Operational Amplifiers (Op Amps)
  4. High Output Current Op Amps ≥ 100mA
  5. MAX4232

Data Sheet Rev. 23
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Overview

Features and Benefits

  • Optimized for Headsets and High-Current Outputs
    • 200mA Output Drive Capability
    • 100dB Voltage Gain (RL = 100kΩ)
    • 85dB Power-Supply Rejection Ratio
    • No Phase Reversal for Overdriven Inputs
    • Unity-Gain Stable for Capacitive Loads to 780pF
  • Suitable for High-Bandwidth Applications
    • 10MHz Gain-Bandwidth Product
    • High Slew Rate: 10V/µs
  • Extends the Battery Life of Portable Applications
    • 1.1mA Supply Current per Amplifier
  • Low-Power Shutdown Mode Reduces Supply Current to < 1µA
  • Small Package Options
    • Tiny, 2.1mm x 2.0mm Space-Saving SC70 Package
  • AEC-Q100 Qualified, Refer to Ordering Information for the List of /V Parts

Product Details

The MAX4230–MAX4234 single/dual/quad, high-output drive CMOS op amps feature 200mA of peak output current, rail-to-rail input, and output capability from single 2.7V to 5.5V supply. These amplifiers exhibit high slew rate of 10V/µs and a gain-bandwidth product (GBWP) of 10MHz. The MAX4230–MAX4234 can drive typical headset levels (32Ω), as well as bias an RF power amplifier (PA) in wireless handset applications.

The MAX4230 comes in a tiny 5-pin SC70 package and the MAX4231, single with shutdown, is offered in a 6-pin SC70 package and in 1.5mm x 1.0mm UCSP™ and thin µDFN packages. The dual op-amp MAX4233 offered in the space-saving 10-bump chip-scale package (UCSP), providing the smallest footprint area for a dual op amp with shutdown.

These op amps are designed to be part of the PA control circuitry, biasing RF PAs in wireless headsets. The MAX4231/MAX4233 offer a active-low SHDN feature that drives the output low. This ensures that the RF PA is fully disabled when needed, preventing unconverted signals to the RF antenna.

Applications

  • Audio Hands-Free Car Phones (Kits)
  • Digital-to-Analog Converter Buffers
  • Motor Drivers
  • Portable Headphone Speaker Drivers (32Ω)
  • Portable/Battery-Powered Audio Applications
  • RF PA Biasing Controls in Handset Applications
  • Tablet/Notebook Computers
  • Transformer/Line Drivers

Product Categories

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At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (3)

Documentation & Resources

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  • Data Sheets (1)
  • Reliability Data (1)
  • Design Notes (2)
  • Technical Articles (4)
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    Product Recommendations

    MAX4232 Companion Parts

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    Design Resources

    ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

    Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    MAX4232AKA+ Material Declaration Reliability Data 8-SOT_23-N/A
    MAX4232AKA+T Material Declaration Reliability Data 8-SOT_23-N/A
    MAX4232AKA+T10 Material Declaration Reliability Data 8-SOT_23-N/A
    MAX4232AKA+TG069 Material Declaration Reliability Data 8-SOT_23-N/A
    MAX4232AUA+ Material Declaration Reliability Data Micro-MAX, Thin Shrink Small-Outline
    MAX4232AUA+T Material Declaration Reliability Data Micro-MAX, Thin Shrink Small-Outline
    MAX4232AUA/GG8 Material Declaration Reliability Data N/A
    Wafer Fabrication Data MAX4232 Reliability Data

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