MAX44280：1.8V, 50MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op Amp

High Bandwidth and Excellent VOS Accuracy Over Time and Temperature

The MAX44280 offers a unique combination of high speed, precision, low noise, and low-voltage operation making it ideally suited for a large number of signal processing functions such as filtering and amplification of signals in portable and industrial equipment. The amplifier features an input offset of less than 50µV and a high-gain bandwidth product of 50MHz while maintaining a low 1.8V supply rail. The device is internally compensated for gains of 5V/V or greater. The device's rail-to-rail input/outputs and low noise guarantee maximum dynamic range in demanding applications such as 12- to 16-bit SAR ADC drivers. Unlike traditional rail-to-rail input structures, input crossover distortion is absent due to an optimized input stage with an ultra-quiet charge pump. The MAX44280 includes a fast-power-on shutdown mode for further power savings. The MAX44280 operates from a supply range of 1.8V to 5.5V over the -40°C to +125°C temperature range and can operate down to 1.7V over the 0°C to +70°C temperature range. The MAX44280 is available in a small, 6-pin SC70 package and is also available in a 1mm x 1.5mm thin µDFN (ultra-thin LGA) package.

Key Features

Low 1.8V Supply Rail Over the -40°C to +125°C Range
1.7V Supply Rail Over the 0°C to +70°C Range
50MHz Bandwidth
Low 12.7nV/ Input Voltage-Noise Density
Low 1.2fA/ Input Current-Noise Density
Low 50µV (max) VOS at +25°C
500fA Low Input Bias Current
750µA Quiescent Current per Amplifier
< 1µA Supply Current in Shutdown
Small, 2mm x 2mm SC70 and 1mm x 1.5mm Thin µDFN Packages
Low -110dB Total Harmonic Distortion
5V/V Minimum Stable Gain

MAX44280: Typical Application Circuit

Applications/Uses

3G/4G Handsets
Analog-to-Digital Converter Buffers
Battery-Operated Devices
General-Purpose Signal Processing
Notebooks
Portable Media Players
Portable Medical Instruments
Transimpedance Amplifiers

DataSheet

title	Download file
MAX44280 Data Sheet	MAX44280.pdf

Parametrics

Part Number	Amps.	Rail to Rail	A_V (V/V)	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	A_V (V/V)	min	max	typ	max	typ	typ	Low Input Bias CMOS Inputs	max	typ	typ	<	Package/Pins	See Notes
MAX44280	1	Input/Output	5	1.7	5.5	750	50	90	95	Yes	0.0005	50	30	12.7	SC-70/6 UTLGA/6	$0.85 @1k

Design kits & evaluation modules

MAX44280EVKIT

Quality and Environmental Data

MAX44280.pdf

Ordering Information

Part Number	Status	Package	Temp	RoHS
MAX44280AXT+	Active	SC-70,;6 pin;5.3 mm²	-40°C to +85°C	Lead Free
MAX44280AXT+T	Active	SC-70,;6 pin;5.3 mm²	-40°C to +85°C	Lead Free
MAX44280AYT+	Active	UTLGA,;6 pin;1.6 mm²	-40°C to +85°C	Lead Free
MAX44280AYT+T	Active	UTLGA,;6 pin;1.6 mm²	-40°C to +85°C	Lead Free