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WM9090

更新时间： 2024-09-18 12:26:15
品牌 Logo 应用领域
欧胜 - WOLFSON /
页数 文件大小 规格书
81页 1335K
描述
Ultra Low Power Audio Subsystem

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WM9090 数据手册

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WM9090  
w
Ultra Low Power Audio Subsystem  
DESCRIPTION  
FEATURES  
The WM9090[1] is a high performance low power audio  
subsystem with integrated headphone driver and Class D  
speaker driver. The speaker driver supports 750mW output  
power at 3.7V, 1%THD.  
•
Mono Class D speaker driver  
2W at 5V SPKVDD @ 1% THD+N into 4Ω  
-
-
-
950mW at 4.2V SPKVDD @ 1% THD+N into 8Ω  
90dB SNR  
Ground referenced stereo headphone driver  
35mW into 16ꢀ load @ 1% THD+N  
95dB SNR  
•
The unique dual mode charge pump architecture provides  
ground referenced headphone outputs, removing the  
-
-
-
requirement for external coupling capacitors. Class  
G
80dB THD+N  
technology is integrated to increase the efficiency and  
extend playback time by optimizing the headphone driver  
supply voltages according to the volume control.  
•
•
•
•
•
Differential and single ended analogue input configurations  
Integrated oscillator for clocking requirements  
I2C 2-wire software control interface  
Automatic gain control (AGC) for speaker output  
SilentSwitch™ Pop and click suppression  
< 1mV DC offset  
The flexible input configuration allows single ended or  
differential stereo inputs. Mixers allow highly flexible routing  
to the outputs.  
-
•
•
•
<50ms start up time  
Separate mixer and volume controls are provided for each  
headphone and speaker driver. Automatic Gain Control  
limits the speaker output signal in order to prevent clipping.  
Excellent RF and TDMA noise immunity  
Ultra low power consumption  
4mW quiescent for headphone driver  
5mW quiescent for speaker driver  
Shutdown current < 1uA  
-
-
DC offset correction to less than 1mV guarantees  
pop/click-free headphone start up.  
a
•
•
Supply voltage  
WM9090 is controlled using a two-wire I2C interface. An  
integrated oscillator generates all internal clocks, removing  
the need to provide any external clock.  
-
-
SPKVDD = 2.7V to 5.5V  
AVDD = 1.8V  
1.8V to 2.7V control interface compatibility  
20-bump CSP package  
•
•
WM9090 is available in a 2.53mm x 2.07mm 20-bump CSP  
package.  
APPLICATIONS  
•
Mobile handsets  
BLOCK DIAGRAM  
SPKVDD  
Automatic Gain  
Control  
Boost Amplifier  
Class D Driver  
IN1P  
IN1N  
SPKOUTP  
SPKOUTN  
Speaker  
+
-6dB to 18dB  
VMID  
+6dB to -57dB in  
1dB steps  
0dB, -6dB,  
-9dB, -12dB  
+6dB to -57dB  
in 1dB steps  
HPOUTL  
-6dB to 18dB  
+
VMID  
0dB, -6dB,  
-9dB, -12dB  
DC Offset Correction  
IN2P  
IN2N  
+6dB to -57dB  
in 1dB steps  
-6dB to 18dB  
VMID  
HPOUTR  
+
DC Offset Correction  
0dB, -6dB,  
-9dB, -12dB  
-6dB to 18dB  
CPVOUTP  
CPVOUTN  
CPCA  
VMID  
Charge  
Pump  
Control Interface  
CPCB  
WM9090  
SCLK  
SDA  
VMIDC  
GND AVDD  
Production Data, November 2010, Rev 4.1  
WOLFSON MICROELECTRONICS plc  
[1] This product is protected by US Patents 7,622,984 and 7,626,445  
To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews  
Copyright ©2010 Wolfson Microelectronics plc  
1234567...81

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