BM20 datasheet(20/46 Pages) MICROCHIP

Part #	BM20

Description	Bluetooth짰 4.1 Stereo Audio Module

PDF	46 Pages

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Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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20 / 46 page

Stereo Module

 2015 Microchip Technology Inc.

Page 20

Preliminary Edition

Table 3-6: AUDIO CODEC ANALOGUE TO DIGITAL CONVERTER

T= 25

oC, V

dd=3.0V, 1KHz sine wave input, Bandwidth = 20Hz~20KHz

Parameter (Condition)

Min.

Typ.

Max.

Unit

Resolution

Bits

Output Sample Rate

KHz

Signal to Noise Ratio Note: 1

(SNR @MIC or Line-in mode)

Digital Gain

-54

4.85

Digital Gain Resolution

2~6

MIC Boost Gain

Analog Gain

Analog Gain Resolution

2.0

Input full-scale at maximum gain (differential)

rms

Input full-scale at minimum gain (differential)

800

rms

3dB bandwidth

KHz

Microphone mode (input impedance)

KΩ

THD+N (microphone input) @30mVrms input

0.02

Note:

(1) fin=1KHz, B/W=20~20KHz, A-weighted, THD+N < 1%, 150mVpp input

(2) These parameters are characterized but not tested in manufacturing.

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