WM8352 datasheet(17/336 Pages) WOLFSON

17 / 336 page

Production Data

WM8352

PD, February 2011, Rev 4.4

Test Conditions

DCVDD = 1.8V, AVDD = HPVDD = 3.3V, TA = +25

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

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Headphone Output (OUT1L, OUT1R, OUT2L, OUT2R)

0dB full scale output voltage

HPVDD/3.3

Vrms

Signal to Noise Ratio

SNR

A-weighted

Total Harmonic Distortion

(Note 3)

THD+N

RL = 16

Ω, Po=20mW

HPVDD=3.3V

-65

-72

RL = 32

Ω, Po=20mW

HPVDD=3.3V

-71

OUT3/OUT4 outputs (with 10k

Ω / 50pF load)

Full-scale output

HPVDD/3.3

V rms

Signal to Noise Ratio (Note 1, 2)

SNR

A-weighted

Total Harmonic Distortion

(Note 3)

THD

RL = 10k

full-scale signal

-77

-83

Channel Separation (Note 4)

5KHz signal

Microphone Bias

Bias Voltage

VMICBIAS

MBVSEL=0

0.9*AVDD

MBVSEL=1

0.75*AVDD

Bias Current Source

IMICBIAS

Output Noise Voltage

1kHz to 20kHz

nV/

√Hz

Digital Input / Output

Input HIGH Level

VIH

0.7

×DBVDD

Input LOW Level

VIL

0.3

×DBVDD

Output HIGH Level

VOH

IOL=1mA

0.9

×DBVDD

Output LOW Level

VOL

IOH-1mA

0.1xDBVDD

Frequency Locked Loop (FLL)

Reference clock frequency

FREF

0.032

MHz

Jack Detect

Detection switch threshold

VIH

0.7xAVDD

VIL

0.3xAVDD

HPCOM

Ground noise rejection

VIH

VIL

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).

Dynamic range (dB) = DR is a measure of the difference between the highest and lowest portions of a signal. Normally a

THD+N measurement at 60dB below full scale. The measured signal is then corrected by adding the 60dB to it. (E.g.

THD+N @ -60dB= -32dB, DR= 92dB).

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.

WM8352 Datasheet(PDF) 17 Page - Wolfson Microelectronics plc

WM8352 Datasheet(HTML) 17 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 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL