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TS4956 Datasheet(PDF) 1 Page - STMicroelectronics |
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TS4956 Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 51 page  May 2006 Rev. 3 1/51 51 TS4956 Stereo audio amplifier system with I2C bus interface ■ Operating from VCC = 2.7 V to 5.5 V ■ I²C bus control interface ■ 38 mW output power @ VCC =3.3 V, THD = 1%, F = 1 kHz, with 16 Ω Load ■ Ultra low consumption in standby mode: 0.5 µA ■ Digital volume control range from +12 dB to -34 dB ■ 32-step digital volume control ■ Stereo loudspeaker option by I2C ■ 8 different output mode selections ■ Pop & click reduction circuitry ■ Flip-chip package, 18 bumps with 300 µm diameter ■ Lead-free flip chip package ■ Output power limitation on headphone for eardrum damage consideration Description The TS4956 is a complete audio system device with three dedicated outputs, one stereo headphone, one loudspeaker drive and one mono line for a hands-free set. The stereo headphone is capable of delivering more than 25 mW per channel of continuous average power into 16 Ω single-ended loads with 0.3% THD+N from a 5 V power supply. The device functions are controlled via an I²C bus, which minimizes the number of external components needed. The overall gain and the different output modes of the TS4956 are controlled digitally by the control registers which are programmed via the I²C interface. It has also an internal thermal shutdown protection mechanism. Applications ■ Mobile phones (cellular / cordless) ■ PDAs ■ Laptop / notebook computers ■ Portable audio devices Device summary table TS4956 - Flip-Chip18 Pin connections (top view) RIN LHP- MLO RHP+ MIN VCC SDA LIN VCC GND I2CVCC MIP SRP+ SRN- SCL GND BYPASS PGH RIN LHP- MLO RHP+ MIN VCC SDA LIN VCC GND I2CVCC MIP SRP+ SRN- SCL GND BYPASS PGH Part Number Temperature Range Package Packing Marking TS4956EIJT -40°C to +85°C Lead free flip-chip18 Tape & Reel 56 www.st.com |
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