Analog Devices has sold its MEMS Microphone product line to InvenSense. Please visit the InvenSense ADMP521 product page for all technical support and sales information. The ADMP521 is a high performance, ultra low noise, low power, digital output bottom-ported omnidirectional MEMS microphone. The ADMP521 consists of a MEMS microphone element and an impedance converter amplifier followed by a fourth-order Σ-Δ modulator. The digital interface allows for the pulse density modulated (PDM) output of two microphones to be time-multiplexed on a single data line using a single clock. The ADMP521 is function- and pin-compatible with the ADMP421 microphone, providing an easy upgrade path. The ADMP521 has a very high SNR and common sensitivity of −26 dBFS, making it an excellent choice for far field applications. The ADMP521 has an extended wideband frequency response resulting in natural sound with high intelligibility. Low current consumption and a sleep mode with less than 1 µA current consumption enables long battery life for portable applications. The ADMP521 complies with the TIA-920 Telecommunications Telephone Terminal Equipment Transmission Requirements for Wideband Digital Wireline Telephones standard. The ADMP521 is available in a thin 3 mm × 4 mm × 1 mm surface-mount package. It is reflow solder compatible with no sensitivity degradation. The ADMP521 is halide free. APPLICATIONS * Smartphones and feature phones * Tablet computers * Teleconferencing systems * Digital still & video cameras * Bluetooth headsets * Notebook PCs * Security and surveillance * Small and thin 3 mm × 4 mm × 1 mm surface-mount package * Omnidirectional response * Very High SNR of 65 dBA * Sensitivity of −26 dBFS * Extended frequency response from 100 Hz to 16 kHz * Low current consumption: 900 µA