Amplifier chip TS4621 of the stereophone
Purpose law semiconductor introduces the brand-new stereophone amplifier chip TS4621. Compared with previous generation’s product, the improvement by a wide margin of efficiency of TS4621, while letting consumers enjoy the high-quality music, lengthen the life time of battery charge.
TS4621 possesses the audio frequency characteristic of the traditional simulation audio amplifier, adopts the power lower in voltage and deals with most audio frequency signal levels, in order to achieve the goal of saving energy and reducing the cost. When connecting two pieces of power, will consume the electric current of the high tension supply rail while only needing power level of maximum. Utilize the G power amplifier principle, TS4621 is to one of the earphone amplifiers of portable application in the first batch on the market.
TS4621 simplify system design for developer with abundant function, industry canonial the intersection of I2C and interface can realize – the intersection of 60dB and digital volume control in +4dB, the chip Integrated switching circuit can dispel blowing up and noise of warbling of the oriole of click. Ultrathin 1.65mm x 1.65mm piece stage capsulates and can let the chip installed in the nearest place from interface unit of the earphone, realize the optimal audio frequency characteristic.
Direct mobile phone, multimedia, the intersection of MP3 and player, the intersection of game and the intersection of terminal and GPS,etc. and audio frequency IC product mix of product against as the intersection of purpose and the intersection of law and semiconductor, the static current consumption of TS4621 is 1/4 of the Off-The-Shelf class ab amplifier TS4601. This characteristic of saving energy and reducing the cost is very important to with the sensitive apparatus of battery-opwered energy. Meanwhile, TS4621 has excellent key performance parameters, bring the outstanding sense of hearing to the terminal user to experience.
The key feature of TS4621:
o When 1kHz, 0.006% THD +N
o When 217Hz, the rejection ratio 100dB of the mains voltage (the noiseproof characteristic of GSM signal is outstanding)
o In 0dB gain to noise temperature ratio, the signal to noise ratio 100dB
o Every sound channel 0.6mA of quiescent current
o When 100uW audio frequency is exported, every sound channel 2.1mA of working current
Tags: GPS, MP3, The amplifier, the purpose law semiconductor
