Datasheet ICS-40638 (TDK) - 3
| Manufacturer | TDK |
| Description | High AOP Analog MEMS Microphone with Differential Output |
| Pages / Page | 14 / 3 — ICS‐40638. SPECIFICATIONS . TABLE 1. ELECTRICAL CHARACTERISTICS . … |
| File Format / Size | PDF / 391 Kb |
| Document Language | English |
ICS‐40638. SPECIFICATIONS . TABLE 1. ELECTRICAL CHARACTERISTICS . PARAMETER . CONDITIONS . MIN . TYP . MAX . UNITS . NOTES
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Text Version of Document
ICS‐40638
SPECIFICATIONS TABLE 1. ELECTRICAL CHARACTERISTICS
TA = 25°C, VDD = 1.52 to 3.63 V, unless otherwise noted. Typical specifications are not guaranteed.
PARAMETER CONDITIONS MIN TYP MAX UNITS NOTES PERFORMANCE
Directionality Omni Output Polarity Non‐Inverted Sensitivity 1 kHz, 94 dB SPL, differential −44 −43 −42 dBV Signal‐to‐Noise Ratio (SNR) 20 kHz bandwidth, A‐weighted 63 dBA Equivalent Input Noise (EIN) 20 kHz bandwidth, A‐weighted 31 dBA SPL Derived from EIN and acoustic Dynamic Range 107 dB overload point Total Harmonic Distortion (THD) 105 dB SPL 0.2 % 1 kHz, 100 mV p‐p sine wave Power Supply Rejection Ratio (PSRR) ‐81 dB superimposed on VDD = 2.75 V 217 Hz, 100 mVp‐p square wave Power Supply Rejection (PSR) −111 dBV superimposed on VDD = 2.75 V Acoustic Overload Point 10% THD 138 dB SPL
POWER SUPPLY
Supply Voltage (VDD) Standard mode 1.52 3.63 V Supply Current (IS) VDD = 1.8 V 170 190 µA
OUTPUT CHARACTERISTICS
Differential Output Impedance 355 Ω Output Common Mode Voltage OUTPUT+ and OUTPUT‐ 1.0 V Output Differential Offset Between OUTPUT+ and OUTPUT− 10 mV Startup Time Output to within ±0.5 dB of stable 15 20 ms sensitivity Maximum Output Voltage 138 dB SPL input 1.0 V rms Noise Floor 20 Hz to 20 kHz, A‐weighted, rms −106 dBV Page 3 of 14 Document Number: DS‐000281 Revision: 1.1
SPECIFICATIONS TABLE 1. ELECTRICAL CHARACTERISTICS
TA = 25°C, VDD = 1.52 to 3.63 V, unless otherwise noted. Typical specifications are not guaranteed.
PARAMETER CONDITIONS MIN TYP MAX UNITS NOTES PERFORMANCE
Directionality Omni Output Polarity Non‐Inverted Sensitivity 1 kHz, 94 dB SPL, differential −44 −43 −42 dBV Signal‐to‐Noise Ratio (SNR) 20 kHz bandwidth, A‐weighted 63 dBA Equivalent Input Noise (EIN) 20 kHz bandwidth, A‐weighted 31 dBA SPL Derived from EIN and acoustic Dynamic Range 107 dB overload point Total Harmonic Distortion (THD) 105 dB SPL 0.2 % 1 kHz, 100 mV p‐p sine wave Power Supply Rejection Ratio (PSRR) ‐81 dB superimposed on VDD = 2.75 V 217 Hz, 100 mVp‐p square wave Power Supply Rejection (PSR) −111 dBV superimposed on VDD = 2.75 V Acoustic Overload Point 10% THD 138 dB SPL
POWER SUPPLY
Supply Voltage (VDD) Standard mode 1.52 3.63 V Supply Current (IS) VDD = 1.8 V 170 190 µA
OUTPUT CHARACTERISTICS
Differential Output Impedance 355 Ω Output Common Mode Voltage OUTPUT+ and OUTPUT‐ 1.0 V Output Differential Offset Between OUTPUT+ and OUTPUT− 10 mV Startup Time Output to within ±0.5 dB of stable 15 20 ms sensitivity Maximum Output Voltage 138 dB SPL input 1.0 V rms Noise Floor 20 Hz to 20 kHz, A‐weighted, rms −106 dBV Page 3 of 14 Document Number: DS‐000281 Revision: 1.1
