INMP401

SPECIFICATIONS

TABLE 1. ELECTRICAL CHARACTERISTICS

= −40 to 85°C, V

temperature and voltage, and are specified in Table 1, unless otherwise noted. Typical specifications are not guaranteed.)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

NOTES

PERFORMANCE

Directionality

Omni

Sensitivity

1 kHz, 94 dB SPL

−45

−42

−39

dBV

Signal-to-Noise Ratio (SNR)

62

dBA

Equivalent Input Noise (EIN)

32

dBA SPL

Dynamic Range

Derived from EIN and

maximum acoustic input

88

dB

Frequency Response

Low frequency

−3 dB point

60

Hz

1

High frequency

−3 dB point

15

kHz

Total Harmonic Distortion (THD)

105 dB SPL

3

%

Power-Supply Rejection (PSR)

217 Hz, 100 mVp-p square

wave superimposed on VDD

= 1.8 V

−70

dBV

Maximum Acoustic Input

Peak

120

dB SPL

POWER SUPPLY

1.5

3.3

V

250

µA

OUTPUT CHARACTERISTICS

200

Ω

Output DC Offset

0.8

V

Output Current Limit

90

µA

Note 1: See Figure 3 and Figure 4.

Page 3 of 14

Document Number: DS-INMP401-00

Revision: 1.0.