Datasheet T3902 (TDK) - 4
| Manufacturer | TDK |
| Description | Bottom Port PDM Low‐Power Multi‐Mode Microphone With High AOP Mode |
| Pages / Page | 22 / 4 — T3902. SPECIFICATIONS . … |
| File Format / Size | PDF / 446 Kb |
| Document Language | English |
T3902. SPECIFICATIONS . TABLE 1. ACOUSTICAL/ELECTRICAL CHARACTERISTICS – GENERAL . PARAMETER . CONDITIONS . MIN . TYP . MAX
Model Line for this Datasheet
Text Version of Document
T3902
SPECIFICATIONS TABLE 1. ACOUSTICAL/ELECTRICAL CHARACTERISTICS – GENERAL
TA = 25°C, VDD = 1.8 to 3.3 V, SCK = 2.4 MHz, 50× decimation, CLOAD = 30 pF unless otherwise noted. Typical specifications are not guaranteed.
PARAMETER CONDITIONS MIN TYP MAX UNITS NOTES PERFORMANCE
Directionality Omni Output Polarity Input acoustic pressure vs. Non‐Inverted output data Supply Voltage (VDD) 1.65 3.63 V Sleep Mode Current (IS) SCK < 200 kHz 12 20 µA
TABLE 2. ACOUSTICAL/ELECTRICAL CHARACTERISTICS – HIGH‐PERFORMANCE MODE
TA = 25°C, VDD = 1.8 to 3.3 V, SCK = 4.8 MHz, 50× decimation, CLOAD = 30 pF unless otherwise noted. Typical specifications are not guaranteed.
PARAMETER CONDITIONS MIN TYP MAX UNITS NOTES
Sensitivity 1 kHz, 94 dB SPL −33 −32 −31 dB FS 1, 2 Signal‐to‐Noise Ratio (SNR) 20 kHz bandwidth, A‐weighted 64 dBA Equivalent Input Noise (EIN) 20 kHz bandwidth, A‐weighted 30 dBA SPL Dynamic Range Derived from EIN and AOP 96 dB Low frequency −3 dB point 36 Hz 3 Total Harmonic Distortion (THD) 105 dB SPL 0.2 1 % Power Supply Rejection (PSR) 217 Hz, 100 mV p‐p square wave superimposed on VDD = 1.8 V, A‐ −97 dB FS weighted Power Supply Rejection—Swept 1 kHz sine wave −100 dB FS Sine Acoustic Overload Point 10% THD 126 dB SPL Full‐Scale Acoustic Level 0 dB FS output 126 dB SPL Supply Current (IS) VDD = 1.8 V, no load 650 750 µA
Note 1:
Sensitivity is relative to the RMS level of a sine wave with positive amplitude equal to 100% 1s density and negative amplitude equal to 0% 1s density.
Note 2:
The sensitivity shall not deviate more than 1.0 dB from its initial value after reliability tests.
Note 3:
See Figure 4.
Page 4 of 22 Document Number: DS‐000357 Revision: 1.0
SPECIFICATIONS TABLE 1. ACOUSTICAL/ELECTRICAL CHARACTERISTICS – GENERAL
TA = 25°C, VDD = 1.8 to 3.3 V, SCK = 2.4 MHz, 50× decimation, CLOAD = 30 pF unless otherwise noted. Typical specifications are not guaranteed.
PARAMETER CONDITIONS MIN TYP MAX UNITS NOTES PERFORMANCE
Directionality Omni Output Polarity Input acoustic pressure vs. Non‐Inverted output data Supply Voltage (VDD) 1.65 3.63 V Sleep Mode Current (IS) SCK < 200 kHz 12 20 µA
TABLE 2. ACOUSTICAL/ELECTRICAL CHARACTERISTICS – HIGH‐PERFORMANCE MODE
TA = 25°C, VDD = 1.8 to 3.3 V, SCK = 4.8 MHz, 50× decimation, CLOAD = 30 pF unless otherwise noted. Typical specifications are not guaranteed.
PARAMETER CONDITIONS MIN TYP MAX UNITS NOTES
Sensitivity 1 kHz, 94 dB SPL −33 −32 −31 dB FS 1, 2 Signal‐to‐Noise Ratio (SNR) 20 kHz bandwidth, A‐weighted 64 dBA Equivalent Input Noise (EIN) 20 kHz bandwidth, A‐weighted 30 dBA SPL Dynamic Range Derived from EIN and AOP 96 dB Low frequency −3 dB point 36 Hz 3 Total Harmonic Distortion (THD) 105 dB SPL 0.2 1 % Power Supply Rejection (PSR) 217 Hz, 100 mV p‐p square wave superimposed on VDD = 1.8 V, A‐ −97 dB FS weighted Power Supply Rejection—Swept 1 kHz sine wave −100 dB FS Sine Acoustic Overload Point 10% THD 126 dB SPL Full‐Scale Acoustic Level 0 dB FS output 126 dB SPL Supply Current (IS) VDD = 1.8 V, no load 650 750 µA
Note 1:
Sensitivity is relative to the RMS level of a sine wave with positive amplitude equal to 100% 1s density and negative amplitude equal to 0% 1s density.
Note 2:
The sensitivity shall not deviate more than 1.0 dB from its initial value after reliability tests.
Note 3:
See Figure 4.
Page 4 of 22 Document Number: DS‐000357 Revision: 1.0
