Hearing Aid Omnidirectional MEMS Microphone ADMP803 Data Sheet FEATURES GENERAL DESCRIPTION Small surface-mount package: 3.35 mm x 2.5 mm x 0.98 mm Equivalent input noise: 27 dBA SPL Sensitivity: -35 dBV Hearing aid-compatible voltage range: 0.9 V to 1.3 V Low current consumption: 17 A 0.8 sec startup to within 0.2 dB of 1 kHz sensitivity Flat frequency response Good sensitivity and frequency response matching Single-ended analog output Compatible with Sn/Pb and Pb-free solder processes RoHS/WEEE compliant The ADMP803 is a high performance MEMS microphone with a unique combination of very low self noise, tiny package volume (7.3 mm3), and low power consumption. Running from a 1 V supply, the ADMP803 consumes only 17 A of current while providing an equivalent input noise of 27 dBA SPL with an analog 4.5 k impedance output. Combined with the benefits of MEMS technology, reflow solder compatibility, and a highly stable response over time and temperature, these features make the ADMP803 an ideal microphone choice for assistive listening devices (ALDs) such as hearing aids. APPLICATIONS BOTTOM VIEW (Not to Scale) TOP VIEW (Not to Scale) 11538-001 4 Hearing aids Hearing aid accessories Assistive listening/alerting and signaling systems Audiometers Bone conduction devices Hearing protection Figure 1. Isometric Views of the ADMP803 Microphone Package FUNCTIONAL BLOCK DIAGRAM OUTPUT AMPLIFIER POWER VDD GND 11538-002 ADMP803 OUTPUT Figure 2. For more information about the ADMP803, contact HA_Mics@analog.com. Rev. Sp0 Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 (c)2013 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com ADMP803 Data Sheet NOTES (c)2013 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D11538F-0-8/13(Sp0) Rev. Sp0 | Page 2 of 2