MAX4232：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

title	Download file
MAX4230-MAX4234 Data Sheet	MAX4230-MAX4234.pdf

Parametrics

Part Number	Amps.	Rail to Rail	V_SUPPLY (Total) (V)	V_SUPPLY (Total) (V)	I_CC per Amp. (µA)	V_OS (µV)	CMRR @DC (dB)	PSRR @DC (dB)	Low Input Bias CMOS Inputs	Input I_BIAS (nA)	Unity Gain BW (MHz)	Slew Rate (V/µs)	e_n (nV/√Hz)	Package/Pins	Budgetary Price
Part Number	Amps.	Rail to Rail	min	max	typ	max	typ	typ	Low Input Bias CMOS Inputs	max	typ	typ	<	Package/Pins	See Notes
MAX4230	1	Input/Output	2.7	5.5	1100	6000	70	85	Yes	0.05	10	10	12	SC-70/5 SOT/5	$0.59 @1k
MAX4231	1													SC-70/6 SOT/6 UCSP/6 UTLGA/6	$0.59 @1k
MAX4232	2													µMAX/8 SOT/8	$0.62 @1k
MAX4233	2													µMAX/10 UCSP/12	$0.72 @1k
MAX4234	4													SOIC(N)/14 TSSOP/14	$1.17 @1k

Design kits & evaluation modules

Quality and Environmental Data

MAX4232.pdf

Ordering Information

Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX4232AKA+	Active		SOT,;8 pin;9 mm²	-40°C to +125°C	Lead Free
MAX4232AKA+T	Active		SOT,;8 pin;9 mm²	-40°C to +125°C	Lead Free
MAX4232AKA+TC2F	Active	MAX4232AKA+T	SOT;	-40°C to +125°C	See data sheet
MAX4232AKA+TG069	Active		SOT,;8 pin;9 mm²	-40°C to +85°C	Lead Free
MAX4232AKA-T	No Longer Available	MAX4232AKA+T	SOT,;8 pin;9 mm²	-40°C to +125°C	No
MAX4232AUA	No Longer Available	MAX4232AUA+	µMAX,;8 pin;15.6 mm²	-40°C to +125°C	No
MAX4232AUA+	Active		µMAX,;8 pin;15.6 mm²	-40°C to +125°C	Lead Free
MAX4232AUA+T	Active		µMAX,;8 pin;15.6 mm²	-40°C to +125°C	Lead Free
MAX4232AUA-T	No Longer Available	MAX4232AUA+T	µMAX,;8 pin;15.6 mm²	-40°C to +125°C	No
MAX4232AUA/GG8	Active		µMAX,;8 pin;15.6 mm²	-40°C to +125°C	No