Lower power and noise CMOS operational amplifier for automotive applications

The OPAx314-Q1 series from Texas Instruments is a family of single, and dual-, and quad-channel operational amplifiers (op-amps) that represents a new generation of low-power, general-purpose CMOS amplifiers. Rail-to-rail input and output swings, low quiescent current (150µA typically at 5VS) combined with a wide bandwidth of 3MHz, and very low noise (14nV/vHz at 1kHz) make this device family very attractive for a variety of battery-powered applications that require a good balance between cost and performance. The low input bias current supports applications with mega-ohm source impedances. The robust design of the series provides ease-of-use to the circuit designer: unity-gain stability with capacitive loads of up to 300pF, an integrated RF/EMI rejection filter, no phase reversal in overdrive conditions, and high ESD protection (4kV HBM). The device is optimized for low-voltage operation as low as 1.8V (±0.9V) and up to 5.5V (±2.75V), and is specified over the full extended temperature range of –40C to +125C. The single-channel device, OPA314-Q1, is offered in the SOT-23 package and the dual-channel device, OPA2314-Q1, is offered in the VSSOP (eight) package. The quad-channel OPA4314-Q1 is available in the 14-pin TSSOP package.