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

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.

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
  • AEC-Q100 Qualified, Refer to Ordering Information for the List of /V Parts

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
Parametric specs for Operational Amplifiers
Unity Gain BW (MHz) (typ) 10
Input IBIAS (nA) (max) 0.05
VOS (µV) (max) 6000
VSUPPLY (Total) (V) (min) 2.7
VSUPPLY (Total) (V) (max) 5.5
# Amplifiers 2
Rail to Rail Input/Output
Package/Pins UCSP (B)/12
UMAX/10
Budgetary
Price (See Notes)
$0.76 @1k
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Simplified Block Diagram

MAX4230, MAX4231, MAX4232, MAX4233, MAX4234: Typical Operating Circuit MAX4230, MAX4231, MAX4232, MAX4233, MAX4234: Typical Operating Circuit Zoom icon

Technical Docs

Design & Development

Click any title below to view the detail page where available.

Description

The MAX4338 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board that evaluates the MAX4338 audio amplifier. The MAX4338 EV kit is designed to be driven by the lineout of a CD player or directly connected to any stereo audio source. The MAX4338 EV kit includes RCA jacks on the input and a 3.5mm headphone jack on the output to facilitate easy connections to the circuit board.

This MAX4338 EV kit can also be used to evaluate the MAX4233 high-output-drive, rail-to-rail op amp.

View Details

Features

  • Capable of Driving a Stereo 32Ω Load
    • (POUT = 60mW, VCC = 5V, THD+N = 1%, RL = 32Ω, fIN = 1kHz)
    • (POUT = 20mW, VCC = 3V, THD+N = 1%, RL = 32Ω, fIN = 1kHz)
  • Single-Supply Operation
  • Low 0.1% THD+N (20Hz to 20kHz)
    • (VCC = 5V, POUT = 40mW, RL = 32Ω)
    • (VCC = 3V, POUT = 17mW, RL = 32Ω)
  • Low-Profile Design (2.0mm, max)
  • Fully Assembled and Tested Surface-Mount Board
  • On-Board Shutdowns

Description

The MAX4338 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board that evaluates the MAX4338 audio amplifier. The MAX4338 EV kit is designed to be driven by the lineout of a CD player or directly connected to any stereo audio source. The MAX4338 EV kit includes RCA jacks on the input and a 3.5mm headphone jack on the output to facilitate easy connections to the circuit board.

This MAX4338 EV kit can also be used to evaluate the MAX4233 high-output-drive, rail-to-rail op amp.

View Details

Features

  • Capable of Driving a Stereo 32Ω Load
    • (POUT = 60mW, VCC = 5V, THD+N = 1%, RL = 32Ω, fIN = 1kHz)
    • (POUT = 20mW, VCC = 3V, THD+N = 1%, RL = 32Ω, fIN = 1kHz)
  • Single-Supply Operation
  • Low 0.1% THD+N (20Hz to 20kHz)
    • (VCC = 5V, POUT = 40mW, RL = 32Ω)
    • (VCC = 3V, POUT = 17mW, RL = 32Ω)
  • Low-Profile Design (2.0mm, max)
  • Fully Assembled and Tested Surface-Mount Board
  • On-Board Shutdowns

Description

The MAX4336 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board that evaluates the MAX4336 audio amplifier. The MAX4336 EV kit is designed to be directly connected to any mono audio source, such as a CD player. The MAX4336 EV kit includes an RCA jack on the input and a 3.5mm headphone jack on the output to facilitate easy connections to the circuit board.

The MAX4336 EV kit can also be used to evaluate the MAX4231 high-output-drive, rail-to-rail op amp.

View Details

Features

  • Capable of Driving a Mono 32Ω Load
    • (POUT = 60mW, VCC = 5V, THD+N = 1%, RL = 32Ω, fIN = 1kHz)
    • (POUT = 20mW, VCC = 3V, THD+N = 1%, RL = 32Ω, fIN = 1kHz)
  • Single-Supply Operation
  • Low 0.1% THD+N (20Hz to 20kHz)
    • (VCC = 5V, POUT = 40mW, RL = 32Ω)
    • (VCC = 3V, POUT = 17mW, RL = 32Ω)
  • Low-Profile Design (2.0mm, max)
  • Fully Assembled and Tested
  • On-Board Shutdown

Description

The MAX4231 evaluation kit (EV kit) is a fully assembled and tested PCB that evaluates the MAX4231 single, high-output-drive CMOS operational amplifier (op amp) in a 6-bump chip-scale package (UCSP™).

View Details

Features

  • Flexible Input and Output Configurations
  • Single 2.7V to 5.5V Power Supply
  • Fully Assembled and Tested

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Support & Training

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Filtered Search

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Parameters

Parametric specs for Operational Amplifiers
Unity Gain BW (MHz) (typ) 10
Input IBIAS (nA) (max) 0.05
VOS (µV) (max) 6000
VSUPPLY (Total) (V) (min) 2.7
VSUPPLY (Total) (V) (max) 5.5
# Amplifiers 2
Rail to Rail Input/Output
Package/Pins UCSP (B)/12
UMAX/10
Budgetary
Price (See Notes)
$0.76 @1k

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
  • AEC-Q100 Qualified, Refer to Ordering Information for the List of /V Parts

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

Description

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.

Simplified Block Diagram

MAX4230, MAX4231, MAX4232, MAX4233, MAX4234: Typical Operating Circuit MAX4230, MAX4231, MAX4232, MAX4233, MAX4234: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal