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 cur-
rent, rail-to-rail input, and output capability from a single
2.7V to 5.5V supply. These amplifiers exhibit a 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 is
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 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.
●● RF PA Biasing Controls in Handset Applications
●● Portable/Battery-Powered Audio Applications
●● Portable Headphone Speaker Drivers (32Ω)
●● Audio Hands-Free Car Phones (Kits)
●● Tablet/Notebook Computers
●● Digital-to-Analog Converter Buffers
●● Transformer/Line Drivers
●● Motor Drivers
Benefits and 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
MAX4230AXK+T -40°C to +125°C 5 SC70
MAX4230AXK/V+T -40°C to +125°C 5 SC70
MAX4230AUK+T -40°C to +125°C 5 SOT23
MAX4231AXT+T -40°C to +125°C 6 SC70
MAX4231AUT+T -40°C to +125°C 6 SOT23
MAX4231ART+T -40°C to +125°C 6 UCSP
-40°C to +125°C
6 Thin µDFN
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
Ordering Information continued at end of data sheet.
Selector Guide appears at end of data sheet.
Pin/Bump Configurations appear at end of data sheet.
Visit www.maximintegrated.com/products/patents for product
patent marking information.
UCSP is a trademark of Maxim Integrated Products, Inc.
Typical Operating Circuit
2.7V TO 5.5V
ILOAD = 30mA
19-2164; Rev 20; 11/16