WM7230 WOLFSON [Wolfson Microelectronics plc], WM7230 Datasheet
WM7230
Related parts for WM7230
WM7230 Summary of contents
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... Wolfson’s CMOS/MEMS membrane technology, reliability and high performance in a miniature, low-profile package. The WM7230 is designed to withstand the high temperatures associated with automated flow solder assembly processes. (Note that conventional microphones can be damaged by this process.) The WM7230 incorporates a high performance ADC, which outputs a single-bit Pulse Density Modulated (PDM) audio data stream ...
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... WM7230 DESCRIPTION ....................................................................................................... 1 FEATURES ............................................................................................................ 1 APPLICATIONS ..................................................................................................... 1 BLOCK DIAGRAM ................................................................................................ 1 TABLE OF CONTENTS ......................................................................................... 2 PIN CONFIGURATION .......................................................................................... 3 PIN DESCRIPTION ................................................................................................ 3 ORDERING INFORMATION .................................................................................. 3 ABSOLUTE MAXIMUM RATINGS ........................................................................ 4 IMPORTANT ASSEMBLY GUIDELINES .............................................................. 4 RECOMMENDED OPERATING CONDITIONS ..................................................... 4 ACOUSTIC AND ELECTRICAL CHARACTERISTICS ......................................... 5 TERMINOLOGY ............................................................................................................... 5 AUDIO INTERFACE TIMING ........................................................................................... 6 TYPICAL PERFORMANCE ................................................................................... 7 FREQUENCY RESPONSE .............................................................................................. 7 THD RATIO ...................................................................................................................... 7 ...
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... Data output following rising CLK edge TEMPERATURE SENSITIVITY LEVEL RANGE o -40 to +100 C o -40 to +100 C o -40 to +100 C o -40 to +100 C DESCRIPTION MOISTURE PEAK SOLDERING TEMPERATURE o MSL2A +260 C o MSL2A +260 C o MSL2A +260 C o MSL2A +260 C PTD, Rev 2.4, October 2012 WM7230 3 ...
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... WM7230 ABSOLUTE MAXIMUM RATINGS Absolute Maximum Ratings are stress ratings only. Permanent damage to the device may be caused by continuously operating at or beyond these limits. Device functional operating limits and guaranteed performance specifications are given under Electrical Characteristics at the test conditions specified. ESD Sensitive Device. This device is manufactured on a CMOS process therefore generically susceptible to damage from excessive static voltages ...
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... Preliminary Technical Data ACOUSTIC AND ELECTRICAL CHARACTERISTICS Test Conditions: VDD=1.8V, 1kHz test signal, CLK=2.4MHz, T PARAMETER SYMBOL Directivity Sensitivity (WM7230) Sensitivity (WM7230E) Acoustic Overload Signal to Noise Ratio Total Harmonic Distortion Dynamic Range Frequency Response Acoustic Noise Floor Electrical Noise Floor Power Supply Rejection ...
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... WM7230 6. SLEEP Mode is enabled when the CLK input is below the CLK Sleep Frequency noted above. This is a power-saving mode. Normal operation resumes automatically when the CLK input is above the CLK Sleep Frequency. Note that the VDD supply is still required in SLEEP mode. ...
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... Preliminary Technical Data TYPICAL PERFORMANCE FREQUENCY RESPONSE 11.0 9.0 7.0 5.0 3.0 1.0 ‐1.0 ‐3.0 ‐5.0 ‐7.0 ‐9.0 ‐11.0 10 THD RATIO w Sensitivity vs. Frequency (Relative to Sensitivity @ 1kHz) 100 1000 Frequency (Hz) WM7230 10000 PTD, Rev 2.4, October 2012 7 ...
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... APPLICATIONS INFORMATION RECOMMENDED EXTERNAL COMPONENTS It is recommended to connect a 0.1µF decoupling capacitor between the VDD and GND pins of the WM7230. A ceramic 0.1µF capacitor with X7R dielectric or better is suitable. The capacitor should be placed as close to the WM7230 as possible. OPTIMISED SYSTEM RF DESIGN For optimised RF design please refer to document WAN0278 (Recommended PCB Layout for Microphone RF Immunity in Mobile Cell Phone Applications) for further information ...
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... Preliminary Technical Data RECOMMENDED PCB LAND PATTERNS Figure 3 Recommended Customer PCB Land Pattern (Note that all dimensions can be obtained from the package dimensions) w WM7230 PTD, Rev 2.4, October 2012 9 ...
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... WM7230 PACKAGE DIMENSIONS (LGA) w Preliminary Technical Data PTD, Rev 2.4, October 2012 10 ...
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... Wolfson is not liable for any such representations, warranties or liabilities or for any reliance placed thereon by any person. ADDRESS: Wolfson Microelectronics plc Westfield House 26 Westfield Road Edinburgh EH11 2QB Tel :: +44 (0)131 272 7000 Fax :: +44 (0)131 272 7001 Email :: sales@wolfsonmicro.com w WM7230 Wolfson is PTD, Rev 2.4, October 2012 11 ...
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... WM7230 REVISION HISTORY DATE REV ORIGINATOR 20/10/10 1.0/2.0 PH 26/10/10 1.0/2.0 JMacD 23/11/10 CST 28/01/11 2.0 JMacD 01/05/11 2.1 JMacD 06/09/11 2.1 JMacD 16/12/11 2.2 KC 22/06/12 2.3 MR/JMacD 08/10/12 2.4 JMacD w CHANGES Front page description and features re-worded. Description of LRSEL pin updated. Electrical Characteristics re-ordered, and terminology updated. Microphone interface timing drawing and descriptions updated. Frequency response graph added. ...