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WM8955BL

Features: `DAC SNR 98dB, THD -86dB ( A weighted @ 48kHz, 3.3V) `On-chip Headphone Driver - 40mW output power on 16/ 3.3V - SNR 96dB, THD -79dB at 20mW with 1 load `On-chip BTL Earpiece Driver (mono) `Stereo and Mono Line-in mix into DAC output `Separately Mixed Stereo and Mono Outputs `Digital To...

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SeekIC No. : 004546225 Detail

WM8955BL: Features: `DAC SNR 98dB, THD -86dB ( A weighted @ 48kHz, 3.3V) `On-chip Headphone Driver - 40mW output power on 16/ 3.3V - SNR 96dB, THD -79dB at 20mW with 1 load `On-chip BTL Earpiece Driver (mono...

WM8955BL Data Sheet

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Part Number:
WM8955BL
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/23

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Product Details

Description



Features:

`DAC SNR 98dB, THD -86dB ("A" weighted @ 48kHz, 3.3V)
`On-chip Headphone Driver
- 40mW output power on 16/ 3.3V
- SNR 96dB, THD -79dB at 20mW with 1 load 
`On-chip BTL Earpiece Driver (mono) 
`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)
- 10W 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 
`28-lead QFN package, 4x4x0.75mm size 
`Software compatible with WM8750L, WM8751L, WM8955L


Application

·Smartphone / Multimedia Phone 
·Digital Audio Player


Pinout

Connection Diagram


Specifications

CONDITION
MIN
MAX
Supply voltages
Voltage range digital inputs
Voltage range analogue inputs
Operating temperature range, TA
Storage temperature after soldering
-0.3V
DGND -0.3V
AGND -0.3V
-25
-65
+4.5V
DBVDD +0.3V
AVDD +0.3V
+85
+150

1. Analogue and digital grounds must always be within 0.3V of each other.
2. All digital and analogue supplies are completely independent from each other.


Description

The WM8955BL is a low power, high quality stereo DAC with integrated headphone and earpiece amplifiers, designed to reduce external component requirements in portable digital audio applications.

The on-chip headphone amplifiers can deliver 40mW into a 16 load. Advanced on-chip digital signal processing performs bass and treble tone control.

The WM8955BL 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 WM8955BL 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 WM8955BL is supplied in a very small and thin 4x4mm QFN package, ideal for use in hand-held and portable systems.




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