Texas Instruments (TI) has introduced an OPA1622 audio operational amplifier with the latest audio performance. This product is a new member of the TI Burr-Brown Audio product line family and is also an upgraded product of the widely adopted OPA1612. The new OPA1622 provides high output power of up to 150mW and extremely low distortion of -135dB at 10mW power, thereby providing the highest performance for professional audio equipment. The small size, low power consumption and low distortion of OPA1622 can provide high-fidelity audio for portable devices such as headphone amplifiers, smartphones, tablets and USB audio digital-to-analog converters (DACs). • Improve audio quality to a whole new level: When OPA1622 audio amplifier delivers 10mW output power to a 32Ω load, the total harmonic distortion (THD) is as low as -135dB, which is 12 times better than similar products with the closest performance, especially It can help designers to use in headset applications. While maintaining a minimum of THD and noise (THD + N), it can also provide a maximum output power of up to 150mW before clipping occurs, thereby providing a non-interfering signal path for professional audio applications. • Optimized high-fidelity portable audio equipment: consumes only 2.6mA of low quiescent current per channel, and provides a high linear output current of 80mARMS in a 3mm x 3mm double flat no-lead (DFN) package. In addition, when the frequency reaches 20kHz, the power supply rejection ratio (PSRR) can reach -97 / -123dB, which can enable it to achieve low distortion of the switching power supply without the need for a low dropout regulator (LDO), thereby ensuring Audio performance while saving board space. • Unique pin assignment simplifies design and improves distortion performance: The OPA1622 ground-based enable pin can be directly controlled by the general-purpose input / output (GPIO) pin of the low-power processor, thus eliminating the need for power The need for translational circuits. Its innovative pin assignment improves printed circuit board (PCB) placement and routing, and achieves excellent distortion performance at high output power. • Eliminates audible clicks and pops: a unique enable circuit design that limits output transients while the OPA1622 enters or exits shutdown mode. The TINA-TI SPICE macro model for OPA1622 can help designers verify board-level signal integrity requirements. A high-precision reference design for voltage output audio DACs from TI Designs will be launched in the first quarter of 2016, and its introduction will accelerate the time-to-market for headphone amplifier designs based on OPA1622. Texas Instruments Online Support Community High Precision Amplifier Forum can provide technical support for OPA1622. In this forum, engineers can search for solutions, get related help, and share knowledge and solve problems with fellow engineers and TI experts. In addition, engineers can deepen their audio expertise in TI ’s high-precision laboratory—op amps; this is TI ’s on-demand training series, which covers a variety of topics including low distortion design and noise. These videos use circuits in a real environment to explain to designers how to achieve overall system performance goals. The OPA1622 is currently available in a 3mm x 3mm DFN package. To create a high-performance audio signal path, system designers can combine OPA1622 with TI's PCM1794A Burr-Brown Audio stereo digital-to-analog converter (DAC). Other companion devices include TI TPS65133 and TPS65132 split-rail converters for powering portable applications. CL-2H Copper Connecting Terminals Our company specializes in the production and sales of all kinds of terminals, copper terminals, nose wire ears, cold pressed terminals, copper joints, but also according to customer requirements for customization and production, our raw materials are produced and sold by ourselves, we have their own raw materials processing plant, high purity T2 copper, quality and quantity, come to me to order it! CL-2H Copper Connecting Terminals Taixing Longyi Terminals Co.,Ltd. , https://www.longyicopperlugs.com