MAX4230 Datasheet, PDF (1/18 Pages) Maxim Integrated Products – High-Output-Drive, 10MHz, 10V/Us, Rail-to-Rail I/O Op Amps with Shutdown in SC70

19-2164; Rev 4; 5/04
High-Output-Drive, 10MHz, 10V/µs,
Rail-to-Rail I/O Op Amps with Shutdown in SC70
General 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 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 the
6-pin SC70 package. The dual op-amp MAX4233 is
offered in the space-saving 10-bump UCSP™, provid-
ing the smallest footprint area for a dual op amp with
shutdown.
These op amps are designed to be part of the PA con-
trol 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 dis-
abled when needed, preventing unconverted signals to
the RF antenna.
The MAX4230 family offers low offsets, wide bandwidth,
and high-output drive in a tiny 2.1mm x 2.0mm space-
saving SC70 package. These parts are offered over the
automotive temperature range (-40°C to +125°C).
Applications
RF PA Biasing Controls in Handset Applications
Portable/Battery-Powered Audio Applications
Portable Headphone Speaker Drivers (32Ω)
Audio Hands-Free Car Phones (Kits)
Laptop/Notebook Computers/TFT Panels
Sound Ports/Cards
Set-Top Boxes
Digital-to-Analog Converter Buffers
Transformer/Line Drivers
Motor Drivers
Selector Guide appears at end of data sheet.
Pin Configurations appear at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
Features
o 30mA Output Drive Capability
o Rail-to-Rail Input and Output
o 1.1mA Supply Current per Amplifier
o 2.7V to 5.5V Single-Supply Operation
o 10MHz Gain-Bandwidth Product
o High Slew Rate: 10V/µs
o 100dB Voltage Gain (R_L = 100kΩ)
o 85dB Power-Supply Rejection Ratio
o No Phase Reversal for Overdriven Inputs
o Unity-Gain Stable for Capacitive Loads to 780pF
o Low-Power Shutdown Mode Reduces Supply
Current to <1µA
o Available in 5-Pin SC70 Package (MAX4230)
o Available in 10-Bump UCSP Package (MAX4233)
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
TOP
MARK
MAX4230AXK-T
MAX4230AUK-T
MAX4231AXT-T
MAX4231AUT-T
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
5 SC70-5
5 SOT23-5
6 SC70-6
6 SOT23-6
ACS
ABZZ
ABA
AAUV
Ordering Information continued at end of data sheet.
Typical Operating Circuit
DAC
R
2.7V TO 5.5V
MAX4231
SHDN
C
RF
ANTENNA
PA
IOUT = 30mA
RISO
CLOAD
________________________________________________________________ Maxim Integrated Products 1
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