What this part is and where it fits
The MAX9939AUB+ from Analog Devices is a dual-channel programmable-gain amplifier (PGA) with a differential output. It delivers a gain-bandwidth product of 279 MHz and a slew rate of 9V/µs, making it suitable for wideband signal conditioning in applications such as ultrasound front-ends, data acquisition systems, and video distribution. The differential output simplifies driving differential-input ADCs or transmitting signals over twisted-pair cables with common-mode noise rejection. The part operates from a 2.9 V to 5.5 V supply and is rated over the -40°C to 125°C industrial temperature range, covering outdoor telecom, factory-floor automation, and automotive cabin environments.
Key ratings and what they mean for the BOM
The 279 MHz gain-bandwidth product and 9V/µs slew rate support signal conditioning up to several tens of MHz with programmable gain.
Lifecycle and sourcing posture
The MAX9939AUB+ carries an active lifecycle status with ROHS3 compliance. No last-time-buy or obsolescence notice is in effect, so it remains suitable for new designs and production BOMs. For current pricing and availability, the part is sourced and quoted to order through independent distribution; confirmed pricing and lead time are provided at quote time against an RFQ.