Datasheet T3902 (TDK)
| Manufacturer | TDK |
| Description | Bottom Port PDM Low‐Power Multi‐Mode Microphone With High AOP Mode |
| Pages / Page | 22 / 1 — T3902. GENERAL DESCRIPTION . APPLICATIONS . FEATURES . SPEC . … |
| File Format / Size | PDF / 446 Kb |
| Document Language | English |
T3902. GENERAL DESCRIPTION . APPLICATIONS . FEATURES . SPEC . LOW‐POWER . STANDARD . HIGH . MODE . PERFORMANCE . Sensitivity . SNR . Current
Model Line for this Datasheet
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T3902
Bottom Port PDM Low‐Power Multi‐Mode Microphone With High AOP Mode
GENERAL DESCRIPTION APPLICATIONS
The T3902 is a low‐power, low‐noise digital MEMS Smartphones microphone in a small package. The T3902 consists of a Microphone Arrays Tablets MEMS microphone element and an impedance converter Cameras amplifier followed by a fourth‐order Σ‐Δ modulator. The pulse Bluetooth Headsets density modulated (PDM) interface allows two microphones Notebook PCs to be time multiplexed on a data line using a single clock. Security and Surveillance The T3902 has multiple modes of operation: High
FEATURES
Performance, Low Power (AlwaysOn), Standard and Sleep.
SPEC LOW‐POWER STANDARD HIGH
The T3902 has low power and high SNR in all operational
MODE MODE PERFORMANCE
modes. It has 126 dB SPL AOP in High Performance mode, and
MODE
120 dB SPL AOP in Standard and Low‐Power modes.
Sensitivity
−26 dB FS ±1 dB −26 dB FS ±1 dB −32 dB FS ±1 dB
SNR
63 dBA 64.5 dBA 64 dBA The T3902 is available in a small 3.5 × 2.65 × 0.98 mm
Current
185 µA 430 µA 650 µA surface‐mount package. It is reflow solder compatible with
AOP
120 dB SPL 120 dB SPL 126 dB SPL no sensitivity degradation.
Clock
400 – 800 kHz 1.0 – 3.3 MHz 4.1 – 4.8 MHz 3.5 × 2.65 × 0.98 mm surface‐mount package Low power: 185 µA in Low‐Power Mode Extended frequency response from 36 Hz to >20 kHz Sleep Mode: 12 µA High power supply rejection (PSR): −97 dB FS Fourth‐order Σ‐Δ modulator Digital pulse density modulation (PDM) output Compatible with Sn/Pb and Pb‐free solder processes RoHS/WEEE compliant
FUNCTIONAL BLOCK DIAGRAM ORDERING INFORMATION
PART TEMP RANGE PACKAGING MMICT3902‐00‐012
−40°C to +85°C 13” Tape and Reel
EV_T3902‐FX
—
InvenSense Inc.
InvenSense, Inc. reserves the right to change the detail 1745 Technology Drive, San Jose, CA 95110 U.S.A Document Number: DS‐000357 specifications as may be required to permit +1(408) 988–7339 Revision: 1.0 improvements in the design of its products. www.invensense.com Rev Date: 4/15/2020
Bottom Port PDM Low‐Power Multi‐Mode Microphone With High AOP Mode
GENERAL DESCRIPTION APPLICATIONS
The T3902 is a low‐power, low‐noise digital MEMS Smartphones microphone in a small package. The T3902 consists of a Microphone Arrays Tablets MEMS microphone element and an impedance converter Cameras amplifier followed by a fourth‐order Σ‐Δ modulator. The pulse Bluetooth Headsets density modulated (PDM) interface allows two microphones Notebook PCs to be time multiplexed on a data line using a single clock. Security and Surveillance The T3902 has multiple modes of operation: High
FEATURES
Performance, Low Power (AlwaysOn), Standard and Sleep.
SPEC LOW‐POWER STANDARD HIGH
The T3902 has low power and high SNR in all operational
MODE MODE PERFORMANCE
modes. It has 126 dB SPL AOP in High Performance mode, and
MODE
120 dB SPL AOP in Standard and Low‐Power modes.
Sensitivity
−26 dB FS ±1 dB −26 dB FS ±1 dB −32 dB FS ±1 dB
SNR
63 dBA 64.5 dBA 64 dBA The T3902 is available in a small 3.5 × 2.65 × 0.98 mm
Current
185 µA 430 µA 650 µA surface‐mount package. It is reflow solder compatible with
AOP
120 dB SPL 120 dB SPL 126 dB SPL no sensitivity degradation.
Clock
400 – 800 kHz 1.0 – 3.3 MHz 4.1 – 4.8 MHz 3.5 × 2.65 × 0.98 mm surface‐mount package Low power: 185 µA in Low‐Power Mode Extended frequency response from 36 Hz to >20 kHz Sleep Mode: 12 µA High power supply rejection (PSR): −97 dB FS Fourth‐order Σ‐Δ modulator Digital pulse density modulation (PDM) output Compatible with Sn/Pb and Pb‐free solder processes RoHS/WEEE compliant
FUNCTIONAL BLOCK DIAGRAM ORDERING INFORMATION
PART TEMP RANGE PACKAGING MMICT3902‐00‐012
−40°C to +85°C 13” Tape and Reel
EV_T3902‐FX
—
InvenSense Inc.
InvenSense, Inc. reserves the right to change the detail 1745 Technology Drive, San Jose, CA 95110 U.S.A Document Number: DS‐000357 specifications as may be required to permit +1(408) 988–7339 Revision: 1.0 improvements in the design of its products. www.invensense.com Rev Date: 4/15/2020
