MAX44261：1.8V, 15MHz Low-Offset, Low-Power, Rail-to-Rail I/O Op Amps

On-Demand Calibration Provides Accuracy Over Time and Temperature

The MAX44259/MAX44260/MAX44261/MAX44263 offer a unique combination of high speed, precision, low noise, and low-voltage operation making them ideally suited for a large number of signal processing functions such as filtering and amplification of signals in portable and industrial equipment. The devices’ rail-to-rail input/outputs and low noise guarantee maximum dynamic range in demanding applications such as 12- to 14-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 MAX44260 includes a fast-power-on shutdown mode for further power savings. The MAX44261 offers a unique on-demand calibration pin where the user can invoke self-trimming of the input offset voltage. The MAX44263 is a dual amplifier. The family of parts 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 MAX44259 is offered in a 5-pin SOT23 package. The MAX44260/MAX44261 are available in small, 6-pin SC70 packages. The MAX44260 is also available in a 1mm x 1.5mm thin µDFN (ultra-thin LGA)package. The MAX44263 is available in a small 8-pin SC70 package.

Key Features

Low Noise for Higher System Accuracy
- 12.7nV/√Hz Input Voltage-Noise Density
- 1.2fA/√Hz Input Current-Noise Density
- 50µV (max) VOS at +25°C
- 110dB Total Harmonic Distortion
15MHz Unity-Gain Bandwidth Enables for High-Bandwidth Applications
Low Power Extends the Battery Life of Portable Equipment
- 500fA Low Input Bias Current
- 750µA Quiescent Current per Amplifier
- < 1µA Supply Current in Shutdown
On-Demand VOS Self-Calibration (MAX44261)
Saves Board Space
- Small, 2mm x 2mm SC70 and 1mm x 1.5mm Thin µDFN (MAX44260) and SOT23 (MAX44259) Packages
Wide Supply Range from 1.8V to 5.5V Simplifies Power-Supply Requirements

MAX44260, MAX44261: 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
MAX44259-MAX44263 Data Sheet	MAX44259-MAX44263.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
MAX44259	1	Input/Output	1.7	5.5	750	800	90	95	Yes	0.0005	15	7	-	SOT23/5	$0.63 @1k
MAX44260	1				750	50							12.7	SC-70/6 UTLGA/6	$0.65 @1k
MAX44261	1				750	50							12.7	SC-70/6	$0.65 @1k
MAX44263	2				650	50							12.7	SC-70/8	$1.05 @1k