GTA2718B-3-GETTOP

The GTA2718B-3 is a small package, single-ended output bottom port analog MEMS microphone, consists of a MEMS sensor and a low noise level ASIC.

Features

Performance Parameters

Parameter	Symbol	Condition	Min	Nom.	Max	Unit
Sensitivity	S	f=1kHz, Pin=1Pa, 0dB=1V/Pa	-39	-38	-37	dB
Operating Voltage	V_DD		2.3	2.75	3.6	V
Directivity			Omni-directional
Polarity		Sound pressure increase	Output voltage increase
Sensitivity vs. Voltage	ΔS	Vs= 3.6V to 1.6V	＜0.5			dB
Output Impedance	Z_OUT	f=1kHz			400	Ω
Current Consumption	I	2.3 V to 3.6V		135	200	µA
S/N Ratio	S/N	f=1kHz, BW=20-20kHz, A-Weighted	64	66		dBA
Total Harmonic Distortion	THD	94dB SPL @1KHz		0.05	0.5	%
Total Harmonic Distortion		125dBSPL @1KHz		1		%
Acoustic Overload Point	AOP	THD 10%@1KHz		129		dBSPL
Power Supply Rejection	PSR	100mVpp Square wave @217Hz, A-weighted		-102	-90	dB
Power Supply Rejection Ratio	PSRR	200mVpp Sinewave @1KHz	60	71		dB
DC output	VDC			1.1		V
Output load	C_load				100	pF
Output load	R_load		8			KΩ
Note：Frequency response, sensitivity and current consumption are tested by 100% on product line.