ICS-40720 datasheet(3/16 Pages) ETC2

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ICS‐40720

Page 3 of 16

Document Number: DS‐000045

Revision: 1.3

SPECIFICATIONS

TABLE 1. ELECTRICAL CHARACTERISTICS

TA = 25°C, VDD = 1.5 to 3.63 V, unless otherwise noted. Typical specifications are not guaranteed.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

NOTES

PERFORMANCE

Directionality

Omni

Sensitivity

1 kHz, 94 dB SPL, differential

−34

−32

−30

dBV

1 kHz, 94 dB SPL, single‐ended

−40

−38

−36

dBV

Signal‐to‐Noise Ratio (SNR)

20 Hz to 20 kHz, A‐weighted,

differential

dBA

20 Hz to 20 kHz, A‐weighted,

single‐ended

dBA

Equivalent Input Noise (EIN)

20 Hz to 20 kHz, A‐weighted

dBA SPL

Dynamic Range

Derived from EIN and maximum

acoustic input

100

Frequency Response

Low frequency −3 dB point

High frequency −3 dB point

>20

kHz

Total Harmonic Distortion (THD)

105 dB SPL

0.6

Power‐Supply Rejection (PSR)

217 Hz, 100 mVp‐p square wave

superimposed on VDD = 1.8 V,

A‐weighted

−77

dBV

Power Supply Rejection Ratio (PSRR)

1 kHz, 100 mV p‐p sine wave

superimposed on VDD = 1.8 V

−45

Acoustic Overload Point

10% THD

124

dB SPL

POWER SUPPLY

Supply Voltage (VDD)

1.5

3.63

Supply Current (IS)

VDD = 1.8 V

285

350

µA

VDD = 3.3 V

375

µA

OUTPUT CHARACTERISTICS

Output Impedance

Differential

750

Single‐Ended, OUTPUT+

340

Single‐Ended, OUTPUT−

410

Output DC Offset

OUTPUT+

0.66

OUTPUT−

0.70

Maximum Output Voltage

Differential, 124 dB SPL input

0.79

V rms

Single‐Ended, 124 dB SPL input

0.40

V rms

Noise Floor

20 Hz to 20 kHz, A‐weighted, rms

−102

dBV

Note 1: See Figure 3 and Figure 4.

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