LM7321MAX/NOPB Audio Power Amplifier IC Op Amps SGL Ch RRIO Hi Output Crnt Op Amp

1 Features

• (VS = ±15, TA = 25°C, Typical Values Unless Specified.)

• Wide Supply Voltage Range 2.5 V to 32 V

• Output Current +65 mA/−100 mA

• Gain Bandwidth Product 20 MHz

• Slew Rate 18 V/μs

• Capacitive Load Tolerance Unlimited

• Input Common-Mode Voltage 0.3-V Beyond Rails

• Input Voltage Noise 15 nV/√Hz

• Input Current Noise 1.3 pA/√Hz

• Supply Current/Channel 1.1 mA

• Distortion THD+Noise −86 dB

• Temperature Range −40°C to 125°C

• Tested at −40°C, 25°C and 125°C at 2.7 V, ±5 V, ±15 V.

• LM732xx are Automotive Grade Products that are AEC-Q100 Grade 1 Qualified.

2 Applications

• Driving MOSFETs and Power Transistors

• Capacitive Proximity Sensors

• Driving Analog Optocouplers

• High-Side Sensing

• Below Ground Current Sensing

• Photodiode Biasing

• Driving Varactor Diodes in PLLs

• Wide Voltage Range Power supplies

• Automotive

• International Power Supplies

3 Description

The LM732xx devices are rail-to-rail input and output amplifiers with wide operating voltages and high- output currents. The LM732xx family is efficient, achieving 18-V/μs slew rate and 20-MHz unity gain bandwidth while requiring only 1 mA of supply current per op amp. The LM732xx device performance is fully specified for operation at 2.7 V, ±5 V and ±15 V.

The LM732xx devices are designed to drive unlimited capacitive loads without oscillations. All LM7321x and LM7322x parts are tested at −40°C, 125°C, and 25°C, with modern automatic test equipment. High performance from −40°C to 125°C, detailed specifications, and extensive testing makes them suitable for industrial, automotive, and communications applications.

Greater than rail-to-rail input common-mode voltage range with 50 dB of common-mode rejection across this wide voltage range, allows both high-side and low-side sensing. Most device parameters are insensitive to power supply voltage, and this makes the parts easier to use where supply voltage may vary, such as automotive electrical systems and battery powered equipment. These amplifiers have true rail-to-rail output and can supply a respectable amount of current (15 mA) with minimal head- room from either rail (300 mV) at low distortion (0.05% THD+Noise).

Device Information