T3903
Page 5 of 21
Document Number: DS-000358
Revision: 1.0
TABLE 3. ACOUSTICAL/ELECTRICAL CHARACTERISTICS – LOW-POWER MODE
T
A
= 25
°C, V
DD
= 1.8 V
to 3.3 V
, SCK = 768 kHz, 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
−27
−26
−25
dB FS
3
Signal-to-Noise Ratio (SNR)
8 kHz bandwidth, A-weighted
63
dBA
Equivalent Input Noise (EIN)
8 kHz bandwidth, A-weighted
31
dBA SPL
Acoustic Dynamic Range
Derived from EIN and acoustic overload point
89
dB
Total Harmonic Distortion (THD)
105 dB SPL
0.15
%
Power Supply Rejection (PSR)
217 Hz, 100 mV p
-p square wave superimposed on
VDD = 1.8 V, A
-weighted
−9
5
dB FS
Power Supply Rejection—Swept Sine
1 kHz sine wave
−
99
dB FS
Acoustic Overload Point
10% THD
120
dB SPL
Supply Current (I
S
)
V
DD
= 1.8 V, no load
220
µA
Note 3:
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.
TABLE 4. DIGITAL INPUT/OUTPUT CHARACTERISTICS
T
A
= 25°C, 1.8 V < VDD
<
3.3 V
, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
NOTES
Input Voltage High (V
IH
)
0.65 ×
V
DD
V
Input Voltage Low (V
IL
)
0.35 ×
V
DD
V
Output Voltage High (V
OH
)
I
LOAD
= 0.5 mA
0.7 ×
V
DD
V
DD
V
Output Voltage Low (V
OL
)
I
LOAD
= 0.5 mA
0
0.3 ×
V
DD
V
Output DC Offset
Percent of full scale
3
%
