Dallas, TX (October 22, 2012)—Texas Instruments has introduced two bipolar-input audio operational amplifiers (op amps)—the dual-channel OPA1662 and quad-channel OPA1664.
The op amps are intended to allow system designers to develop the next generation of professional and prosumer audio equipment, and are targeted at USB and FireWire audio systems, analog and digital mixers, portable recording systems, and other applications that require high noise performance combined with low power consumption.
According to TI, the OPA1662 and OPA1664 offer a low 3.3-nV/rt Hz noise density with an ultra-low total harmonic distortion plus nose of 0.00006 percent at 1 kHz. Power consumption sees a quiescent current of 1.5 mA per channel, while the op amps are said to provide signal integrity via a wide gain bandwidth of 22 MHz and slew rate of 17 V/us. They also have a reported operating range of +/-1.5 V to +/-18 V or +3 V to +36 V, allowing dynamic performance over a variety of loads.
System designers can build an audio signal path by combining the OPA1662 or OPA1664 with the PCM1792A 24-bit, 192-kHz sampling, stereo audio digital-to-analog converter (DAC).
The OPAMPEVM universal op amp evaluation module (EVM) is available to accelerate the development of audio equipment using the OPA1662 and OPA1664 for a suggested retail price of US$5. The Active Filter Designer tool can help system designers implement an op amp filter design. TINA-TI SPICE models and reference designs are also available for the OPA1662 and OPA1664 op amps.
The dual-channel OPA1662 is available in SO-8 and MSOP-8 packages for a suggested retail price of US$0.95 in 1,000-unit quantities. The quad-channel OPA1664 is available in SO-14 and TSSOP-14 packages for a suggested retail price of US$1.45 in 1,000-unit quantities.