TI introduces lowest power, high performance, JFET-input audio operational amplifiers

The op amps support the multiple channels pro audio applications require, without increasing power consumption in high-performance audio circuits, such as broadcast studio equipment, analog and digital mixing consoles, and high-end A/V receivers.

Key features and benefits

· FET inputs deliver 40 percent lower input bias current (2 pA) than competitive devices, making the OPA1641, OPA1642 and OPA1644 better alternatives for applications requiring high source impedance.

· 15 percent lower noise (5 nV/√Hz) and distortion (0.00005% at 1 kHz) than the competition maintain excellent signal-to-noise ratio (SNR), even with high gain levels.

· Wide supply voltage range of +2.5 V to +18 V and rail-to-rail output swing allow for increased headroom, which is critical for audio analog-to-digital converter (ADC) front ends and digital-to-analog converter (DAC) post filters, including TI’s PCM42xx and PCM17xx devices.

· 40 percent lower quiescent current (1.8 mA/channel) supports multiple channels without significant power consumption.