MAX4126M/TR-HG

The MAX412x series single, dual, and quad op amps represent a new generation of precision, low-power op amps. Featuring rail-to-rail input and output (RRIO) swing, low quiescent current (720μA typical), combined with wide bandwidth (9MHz) and ultra-low noise (12nV/√Hz at 1kHz), this series is ideally suited for battery-powered applications requiring a strong balance between cost and performance, such as audio output, motor phase current sensing, photodiode amplification, barcode scanners, and white goods. Low input bias current enables use in applications with megaohm-level source impedances. The robust design of the MAX412x amplifiers provides ease of use for circuit designers: unity-gain stability with capacitive loads up to 500pF, integrated RF/EMI rejection filters, no phase reversal under overdrive conditions, and high ESD protection (5kV HBM). The MAX412x amplifiers are optimized to operate from as low as +2.0V (±1.0V) to as high as +5.5V (±2.75V) over an extended temperature range of -40°C to +125°C. The MAX4122 (single) is available in SOT23-5 and SOP-8 packages. The MAX4126 (dual) is available in SOP-8 and MSOP-8 packages. The quad MAX4129 is available in SOP-14 and TSSOP-14 packages.

Applications

• Battery-powered instruments: consumer, industrial, medical, notebook
• Audio output
• Motor phase current sensing
• Photodiode amplification
• Sensor signal conditioning: sensor interface, loop-powered, active filter

Key features

• Low input offset voltage: ±0.8mV max
• Wide unity-gain bandwidth: 9MHz
• High slew rate: 9V/μs
• Fast settling time: 0.3μs to 0.1%
• Low noise: 12nV/√Hz at 1kHz
• Single-supply voltage range: 2.0V to 5.5V
• Low supply current: 720μA per amplifier at 5V supply
• Rail-to-rail input and output
• Internal RF/EMI filter
• Extended temperature range: -40℃ to +125℃