INMP441ACEZ-R0 datasheet(4/21 Pages) ETC1

4 / 21 page

INMP441

SPECIFICATIONS

TABLE 1. ELECTRICAL CHARACTERISTICS

(TA = −40 to 85°C, VDD = 1.8 to 3.3 V, CLK = 2.4 MHz, CLOAD = 30 pF, unless otherwise noted. All minimum and

maximum specifications are guaranteed across temperature, voltage, and clock frequency specified in Table 1, Table

2, Table 3, unless otherwise noted. Typical specifications are not guaranteed.)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

NOTES

PERFORMANCE

Directionality

Omni

Sensitivity

1 kHz, 94 dB SPL

−29

−26

−23

dBFS

Signal-to-Noise Ratio (SNR)

20 Hz to 20 kHz, A-weighted

dBA

Equivalent Input Noise (EIN)

20 Hz to 20 kHz, A-weighted

dBA SPL

Dynamic Range

Derived from EIN and

maximum acoustic input

Frequency Response

Low frequency −3 dB point

High frequency −3 dB point

kHz

Total Harmonic Distortion (THD)

105 dB SPL

Power-Supply Rejection (PSR)

217 Hz, 100 mVp-p square

wave superimposed on VDD =

1.8 V

−75

dBFS

Maximum Acoustic Input

Peak

120

dB SPL

Noise Floor

20 Hz to 20 kHz, A-weighted,

RMS

−87

dBFS

POWER SUPPLY

Supply Voltage (VDD)

1.62

3.63

Supply Current (IS)

VDD = 1.8 V

Normal Mode

1.4

1.6

Standby

0.8

Power Down

µA

VDD = 3.3 V

Normal Mode

2.2

2.5

Standby

0.8

Power Down

4.5

µA

DIGITAL FILTER

Group Delay

17.2/fS

sec

fS = 48 kHz

359

µs

fS = 16 kHz

1078

µs

Pass-Band Ripple

±0.04

Stop-Band Attenuation

Pass Band

0.423 × fS

20.3

kHz

Note 1: The peak-to-peak amplitude relative to peak-to-peak amplitude of (224 − 1.) The stimulus is a 104 dB SPL sinusoid having RMS amplitude

of 3.1623 Pa. Sensitivity is relative to 1 Pa.

Note 2: See Figure 4 and Figure 5.

Page 4 of 21

Document Number: DS-INMP441-00

Revision: 1.1

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