WM8758B datasheet(12/90 Pages) WOLFSON

12 / 90 page

WM8758B

Production Data

PD, Rev 4.4, January 2012

Test Conditions

DCVDD=1.8V, AVDD1=AVDD2=3.0V, DBVDD=3.3V, TA = +25

oC, 1kHz signal, fs = 48kHz, 24-bit audio data unless otherwise

stated.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Microphone Bias

Bias Voltage

VMICBIAS

MBVSEL=0

0.9*AVDD1

MBVSEL=1

0.65*AVDD1

Bias Current Source

IMICBIAS

for VMICBIAS within +/-3%

Output Noise Voltage

1kHz to 20kHz

nV/

Hz

Digital Input / Output

Input HIGH Level

VIH

0.7

DBV

Input LOW Level

VIL

0.3



DBVDD

Output HIGH Level

VOH

IOL=1mA

0.9

DBV

Output LOW Level

VOL

IOH-1mA

0.1x

DBVDD

TERMINOLOGY

Signal-to-noise ratio (dB) – SNR is a measure of the difference in level between the full scale output and the output

with no signal applied. (No Auto-zero or Automute function is employed in achieving these results).

THD+N (dB) – THD+N is a ratio, of the rms values, of (Noise + Distortion)/Signal.

Channel Separation (dB) – Also known as Cross-Talk. This is a measure of the amount one channel is isolated from

the other. Normally measured by sending a full scale signal down one channel and measuring the other.

THD (dB) – THD is a ratio of the rms value of the first seven harmonics compared to the rms value of the fundamental.

WM8758B Datasheet(PDF) 12 Page - Wolfson Microelectronics plc

WM8758B Datasheet(HTML) 12 Page - Wolfson Microelectronics plc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90

Datasheet Download

Link URL