MAX4122:Single/Dual/Quad, Wide-Bandwidth, Low-Power, Single-Supply Rail-to-Rail I/O Op Amps

The MAX4122–MAX4129 family of operational amplifiers combines wide bandwidth and excellent DC accuracy with rail-to-rail operation at the inputs and outputs. These devices require only 650µA per amplifier, and operate from either a single supply (+2.7V to +6.5V) or dual supplies (±1.35V to ±3.25V) with a common-mode voltage range that extends 250mV beyond VEE and VCC. They are capable of driving 250Ω loads. The MAX4122/MAX4123/MAX4126/MAX4127/MAX4129 have a 5MHz gain bandwidth product, while the decompensated MAX4124/MAX4125/MAX4128 (stable at closed-looped gains of 10 or greater) have a 25MHz gain bandwidth product. In addition, the MAX4123/MAX4125/MAX4127 feature a shutdown mode in which the outputs are placed in a high-impedance state and the supply current is reduced to only 25µA per amplifier. With their rail-to-rail input common-mode range and output swing, these amplifiers are ideal for low-voltage single-supply operation. Although the minimum operating voltage is specified at 2.7V, the devices typically operate down to 1.8V. In addition, low offset voltage and high speed make them the ideal signal-conditioning stages for precision, low-voltage, data-acquisition systems. The MAX4122 and MAX4124 come in the space-saving 5-pin SOT23-5 package.

Key Features
  • 5-Pin SOT23 Package (MAX4122/4)
  • +2.7V to +6.5V Single-Supply Operation
  • Rail-to-Rail Input Common-Mode Voltage Range
  • Rail-to-Rail Output Voltage Swing
  • 5MHz Gain-Bandwidth Product (MAX4122/3/6/7/9)
  • 25MHz Gain-Bandwidth Product (MAX4124/5/8)
  • 650µA Quiescent Current per Amplifier
  • 25µA Shutdown Function (MAX4123/5/7)
  • 200µV Offset Voltage
  • No Phase Reversal for Overdriven Inputs
  • Drive 250Ω Loads
  • Stable with 500pF Capacitive Loads
  • Unity-Gain Stable (MAX4122/3/6/7/9)
  • Stable at Gains > 10V/V (MAX4124/5/8)
MAX4122, MAX4123, MAX4124, MAX4125, MAX4126, MAX4127, MAX4128, MAX4129: Typical Operating Circuit
MAX4122, MAX4123, MAX4124, MAX4125, MAX4126, MAX4127, MAX4128, MAX4129: Typical Operating Circuit
Applications/Uses
  • Automotive Sensors
  • Base Station/Wireless Infrastructure
  • Battery-Powered Applications
  • Computers: Desktops, Workstations, and Servers
  • Computers: Motherboards
  • Computers: Notebook
  • Data Acquisition
  • Industrial: Process Measurement and Control
  • Low-Power, Low-Voltage Applications
  • Panel Meters
  • Portable Equipment
  • Programmable Logic Controllers (PLCs)
  • Signal Conditioning
DataSheet
titleDownload file
MAX4122-MAX4129 Data SheetMAX4122-MAX4129.pdf
Parametrics
Part NumberAmps.Rail to RailVSUPPLY (Total)
(V)
VSUPPLY (Total)
(V)
ICC per Amp.
(µA)
VOS
(µV)
CMRR @DC
(dB)
PSRR @DC
(dB)
Input IBIAS
(nA)
Unity Gain BW
(MHz)
Slew Rate
(V/µs)
en
(nV/√Hz)
Package/PinsBudgetary
Price
minmaxtypmaxtyptypmaxtyptyp<See Notes
MAX41221Input/Output2.76.57251500901001505222SOT/5$1.63 @1k
MAX412316009852µMAX/8
SOIC(N)/8
$1.44 @1k
MAX412411500902510SOT/5$1.78 @1k
MAX41251600982510µMAX/8
SOIC(N)/8
$1.53 @1k
MAX412627509452µMAX/8
SOIC(N)/8
$2.29 @1k
MAX412727509452SOIC(N)/14$2.47 @1k
MAX41282750942510µMAX/8
SOIC(N)/8
$2.29 @1k
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX4122EUKNo Longer AvailableMAX4122EUK+SOT,;5 pin;9 mm²-40°C to +85°CNo
MAX4122EUK+ActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX4122EUK+TActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
MAX4122EUK-TNo Longer AvailableMAX4122EUK+TSOT,;5 pin;9 mm²-40°C to +85°CNo
MAX4122EUK/GH9-TNo Longer AvailableMAX4122EUK+SOT,;5 pin;9 mm²-40°C to +85°CNo
MAX4122-MAX4129.pdf MAX4128
Rail-to-Rail: Railroading and the Electronics of Op Amps MAX4220
Nodal Analysis of Op Amp Circuits MAX4122
HFAN-08.2.1: PWM Temperature Controller for Thermoelectric Modules Keeps Components within 0.1°C MAX4250
MAX4122-MAX4129.pdf MAX4129