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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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WM8955LSEFL/R bảng dữ liệu(PDF) 1 Page - Wolfson Microelectronics plc |
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WM8955LSEFL/R bảng dữ liệu(HTML) 1 Page - Wolfson Microelectronics plc |
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1 / 46 page  w WM8955L Stereo DAC For Portable Audio Applications WOLFSON MICROELECTRONICS plc To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews/ Production Data, March 2006, Rev 4.2 Copyright 2006 Wolfson Microelectronics plc DESCRIPTION The WM8955L is a low power, high quality stereo DAC with integrated headphone and loudspeaker amplifiers, designed to reduce external component requirements in portable digital audio applications. The on-chip headphone amplifiers can deliver 40mW into a 16 Ω load. Advanced on-chip digital signal processing performs bass and treble tone control. The WM8955L can operate as a master or a slave, and includes an on-chip PLL. It can use most master clock frequencies commonly found in portable systems, including USB, GSM, CDMA or PDC clocks, or standard 256fs clock rates. Different audio sample rates such as 48kHz, 44.1kHz, 8kHz and many others are supported. The WM8955L operates on supply voltages from 1.8V up to 3.6V, although the digital core can operate on a separate supply down to 1.42V, saving power. Different sections of the chip can also be powered down under software control. The WM8955L is supplied in a very small and thin 5x5mm QFN package, ideal for use in hand-held and portable systems. FEATURES • DAC SNR 98dB, THD -86dB (‘A’ weighted @ 48kHz, 3.3V) • On-chip 400mW BTL Speaker Driver (mono) • On-chip Headphone Driver - 40mW output power on 16 Ω / 3.3V - SNR 96dB, THD –79dB at 20mW with 16 Ω load • Stereo and Mono Line-in mix into DAC output • Separately Mixed Stereo and Mono Outputs • Digital Tone Control and Bass Boost • Low Power - Down to 7mW for stereo playback (1.8V / 1.5V supplies) - 10 µW Shutdown Mode • Low Supply Voltages - Analogue and Digital I/O: 1.8V to 3.6V - Digital core: 1.42V to 3.6V • Master clocks supported: GSM, CDMA, PDC, USB or standard audio clocks • Audio sample rates supported: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48, 88.2, 96kHz • 32-lead QFN package, 5x5x0.9mm size, 0.5mm lead pitch APPLICATIONS • Smartphone / Multimedia Phone • Digital Audio Player BLOCK DIAGRAM |
Số phần tương tự - WM8955LSEFL/R |
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Mô tả tương tự - WM8955LSEFL/R |
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