TDK T3903, Руководство пользователя

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T3903
Page 4 of 21
Document Number: DS-000358
Revision: 1.0
SPECIFICATIONS
TABLE 1. ACOUSTICAL/ELECTRICAL CHARACTERISTICS – GENERAL
T
A
= 25 °C, V DD = 1.8 V to 3.3 V , SCK = 2.4 MHz, C
LOAD
= 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. output
data
Non-Inverted
Supply Voltage (V
DD
) 1.65 1.8 3.63 V
Sleep Mode Current (I
S
) SCK < 200 kH z, V
DD
=1.8V 9 µA 1
Note 1: S leep Mode current is not specified at 3.3V
TABLE 2. ACOUSTICAL/ELECTRICAL CHARACTERISTICS – HIGH QUALITY MODE
T
A
= 25 °C, V DD = 1.8 V to 3.3 V , SCK = 2.4 MHz, C
LOAD
= 30 pF unless otherwise noted. Typical specifications are not guaranteed.
PARAMETER CONDITIONS MIN TYP MAX UNITS NOTES
Sensitivity 1 kHz, 94 dB SPL − 38 − 37 − 36 dB FS 2
Signal-to-Noise Ratio (SNR) 20 kHz bandwidth, A-weighted 66 dBA
Equivalent Input Noise (EIN) 20 kHz bandwidth, A-weighted 28 dBA SPL
Acoustic Dynamic Range Derived from EIN and acoustic
overload point
105 dB
Total Harmonic Distortion (THD) 94 dB SPL 0.1 %
Power Supply Rejection (PSR) 20 Hz, 100 mVpp applied to V
DD
1 kHz, 100 mVpp applied to V
DD
5 kHz, 100 mVpp applied to V
DD
10 kHz, 100 mVpp applied to V
DD
20 kHz, 100 mVpp applied to V
DD
-86
-109
-98
-96
-81
dB FS(A)
Power Supply Rejection (PSR) 217 Hz, 100 mV p -p square wave
superimposed on VDD = 1.8 V, A -
weighted
-105 dB FS (A)
Power Supply Rejection—Swept Sine 1 kHz sine wave -109 dB FS
Acoustic Overload Point 10% THD 133 dB SPL
Supply Current (I
S
) V
DD
= 1.8 V, no load 590 µA
Note 2:
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.