Datasheet > WM8991

WM8991

更新时间： 2024-09-18 03:54:39

品牌	Logo	应用领域
欧胜 - WOLFSON		解码器驱动器编解码器
页数	文件大小	规格书
174页	2439K
描述
Mobile Multimedia CODEC with Dual-Mode Class AB/D Speaker Driver

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WM8991 数据手册

WM8991

Mobile Multimedia CODEC with

Dual-Mode Class AB/D Speaker Driver

DESCRIPTION

FEATURES

DAC SNR 99dB (‘A’ weighted), THD -84dB at 48kHz, 3.3V

The WM8991 is a highly integrated ultra-low power hi-fi codec

designed for handsets rich in multimedia features such as

mobile TV, digital audio playback and gaming. Ultra-low power

and low noise interfaces to many other audio components in the

system are provided.

ADC SNR 94dB (‘A’ weighted), THD -82dB at 48kHz, 3.3V

Microphone interface (Up to four differential microphones)

1W Speaker driver

1W into 8Ω BTL speaker at <0.1% THD

80dB PSRR @217Hz

<1uA leakage with direct battery connection

Software-selectable class D or AB mode

Filterless connection supported

Pop/Click suppression

A powerful 1W speaker driver can operate in class D or AB

modes, providing total flexibility to the system designer. Low

leakage, high PSRR and pop/click suppression enable direct

battery connection for the speaker supply.

Headphone / ear speaker drivers

A very highly flexible input configuration supports multiple

microphone or line inputs (mono or stereo, single-ended or

differential).

40mW output power into 16Ω at 3.3V

Fully differential and capless modes supported

Pop/Click suppression

Four headphone drivers support fully differential headset drive, 4 Mono or stereo differential line outputs

providing excellent crosstalk performance and bass response, Powerful GPIO functions

maximising stereo effects, and allowing the removal of large Ultra-low power consumption

and expensive headphone capacitors.

8.3mW analogue voice call

13.7mW DAC playback to headphones

Stereo 24-bit sigma-delta ADCs and DACs provide hi-fi quality

audio record and playback, with a flexible digital audio interface

supporting most commonly-used clocking schemes. An

integrated low power PLL, an alternative DAC interface and

TDM support provide additional flexibility.

On-chip PLL provides flexible clocking scheme

Sample rates: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48kHz

65-ball 5x5mm BGA package

APPLICATIONS

The WM8991 is supplied in very small and thin 5x5mm 65-ball

BGA package, ideal for use in portable systems.

Multimedia phones

GPS

Pre-Production, May 2008, Rev 3.1

WOLFSON MICROELECTRONICS plc

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与WM8991相关器件

型号	品牌	获取价格	描述	数据表
WM8994	CIRRUS	获取价格	24-bit, 192kHz, 2V_rms Multi-channel Codec
WM8994ECS/R	CIRRUS	获取价格	PCM Codec, A/MU-Law, 1-Func, CMOS, PBGA72, 4.511 X 4.023 MM, 0.70 MM HEIGHT, 0.50 MM PITCH
WM8998	CIRRUS	获取价格	HD Audio Hub with Slimbus and 3 x I2S interfaces
WM9001	WOLFSON	获取价格	1W Dual-Mode Class AB/D Speaker Driver
WM9001GEFL	CIRRUS	获取价格	Consumer Circuit, CMOS, PQCC16, 3 X 3 MM, 0.75 MM HEIGHT, 0.50 MM PITCH, PLASTIC, MO-220VG
WM9010	WOLFSON	获取价格	Low Power, Class G Stereo Headphone Driver
WM9081	CIRRUS	获取价格	Mono DAC with 2.6W Class AB/D Speaker Driver,
WM9081GICN/RV	CIRRUS	获取价格	Consumer Circuit, CMOS, PQCC28, QFN-28
WM9081GICN/V	CIRRUS	获取价格	Consumer Circuit, CMOS, PQCC28, QFN-28
WM9082	WOLFSON	获取价格	PDM Input Mono 3W Class D Speaker Driver

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