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ADMP404ACEZ-RL Folha de dados(PDF) 3 Page - Analog Devices |
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ADMP404ACEZ-RL Folha de dados(HTML) 3 Page - Analog Devices |
3 / 12 page Preliminary Technical Data ADMP404 Rev. PrH | Page 3 of 12 SPECIFICATIONS TA = 25°C, VDD = 1.8 V, unless otherwise noted. All minimum and maximum specifications are guaranteed. Typical specifications are not guaranteed. Table 1. Parameter Symbol Test Conditions/Comments Min Typ Max Unit PERFORMANCE Directionality Omni Sensitivity 1 kHz, 94 dB SPL −41 −38 −35 dBV Signal-to-Noise Ratio SNR 62 dBA Equivalent Input Noise EIN 32 dBA SPL Frequency Response1 Low frequency –3 dB point 100 Hz High frequency –3 dB point 15 kHz Deviation from flat response within pass band −3 +2 dB Total Harmonic Distortion THD 105 dB SPL 3 % Power Supply Rejection Ratio PSRR 217 Hz, 100 mV p-p square wave superimposed on VDD = 1.8 V 70 dB Maximum Acoustic Input Peak 120 dB SPL POWER SUPPLY Supply Voltage VDD 1.5 3.6 V Supply Current IS 250 µA OUTPUT CHARACTERISTICS Output impedance ZOUT 200 Ω Output DC Offset 0.8 V Output Current Limit 90 µA Polarity Noninverting2 1 See Figure 4 and Figure 6. 2 Positive going (increasing) pressure on the membrane results in a positive going (increasing) output voltage. |
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