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 Lifecycle
Production
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
-
MAX4232 Reliability Data1/12/2023
-
Serializing an HD44780 LCD Display11/23/2005
-
Simple Pulse Generator Has Low Parts Count3/26/2003
Tools & Simulations
LTspice
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Models for the following parts are available in LTspice:
SPICE Models
Product Recommendations
MAX4232 Companion Parts
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 |
Support & Discussions
Sample & Buy
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Evaluation Boards
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Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.