General Description

The MAX4249–MAX4257 low-noise, low-distortion operational amplifiers offer Rail-to-ail®outputs and single supply operation down to 2.4V. They draw only 400µA of quiescent supply current per amplifier while featuring ultra-low distortion (0.0002% THD), as well as low input voltage noise density (7.9nV/√Hz) and low input current noise density (0.5fA/√Hz). These features make the devices an ideal choice for portable/battery-powered applications that require low distortion and/or low noise.

Features

♦Low Input Voltage Noise Density: 7.9nV/√Hz

♦Low Input Current Noise Density: 0.5fA/√Hz

♦Low Distortion: 0.0002% THD (1kΩload)

♦400µA Quiescent Supply Current per Amplifier

♦Single-Supply Operation from +2.4V to +5.5V

♦Input Common-Mode Voltage Range Includes Ground

♦Outputs Swing within 8mV of Rails with a 10kΩLoad

♦3MHz GBW Product, Unity-Gain Stable (MAX4250–MAX4254)

22MHz GBW Product, Stable with AV≥10V/V

(MAX4249/MAX4255/MAX4256/MAX4257)

♦Excellent DC Characteristics:

VOS= 70µV

IBIAS= 1pA

Large-Signal Voltage Gain = 116dB

♦Low-Power Shutdown Mode:

Reduces Supply Current to 0.5µA

Places Outputs in a High-Impedance State

♦400pF Capacitive-Load Handling Capability

♦Available in Space-Saving SOT23 and µMAX Packages