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MAX4231：High-Output-Drive, 10MHz, 10V/µs, Rail-to-Rail I/O Op Amps with Shutdown in SC70

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.

Key Features 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

MAX4230, MAX4231, MAX4232, MAX4233, MAX4234: Typical Operating Circuit Applications/Uses 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

DataSheet

Parametrics

Design kits & evaluation modules

• MAX4233EVKIT
• MAX4338EVKIT
• MAX4336EVKIT
• MAX4231EVKIT

Quality and Environmental Data

• MAX4231.pdf

Related Products

• MAX4336：SC70/SOT23-8, 50mA IOUT, Rail-to-Rail I/O Op Amps with Shutdown/Mute
• MAX4335：SC70/SOT23-8, 50mA IOUT, Rail-to-Rail I/O Op Amps with Shutdown/Mute
• MAX4490：Low-Cost, High-Slew-Rate, Rail-to-Rail I/O Op Amps in SC70
• MAX4165：High-Output-Drive, Precision, Low-Power, Single-Supply, Rail-to-Rail I/O Op Amps with Shutdown

Ordering Information