WM8988 datasheet(8/56 Pages) WOLFSON

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WM8988

Production Data

PD, Rev 4.0, October 2008

Test Conditions

DCVDD = 1.5V, DBVDD = 2.4V, AVDD = HPVDD =2.4V , TA = +25

oC, 1kHz signal, fs = 48kHz, PGA gain = 0dB, 24-bit audio

data unless otherwise stated.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

HPVDD=3.3V, RL=32

Ω,

PO=20mW

HPCOM=LCOM=0

DACMIXBIAS=0

0.010

-82

HPVDD=3.3V, RL=16

Ω,

PO=20mW

HPCOM=LCOM=0

DACMIXBIAS=0

0.010

-80

HPVDD=1.8V, RL=32

Ω

PO=5mW

HPCOM=LCOM=0

DACMIXBIAS=1

-80

HPVDD=1.8V, RL=16

Ω

PO=5mW

HPCOM=LCOM=0

DACMIXBIAS=1

-78

HPVDD=2.4V, RL=32

Ω,

PO=5mW

HPCOM=LCOM=1

DACMIXBIAS=1

-79

HPVDD=2.4V, RL=16

Ω,

PO=5mW

HPCOM=LCOM=1

DACMIXBIAS=1

-77

-65

HPVDD=3.3V, RL=32

Ω,

PO=20mW

HPCOM=LCOM=0

DACMIXBIAS=0

-80

Total Harmonic Distortion +

Noise

THD+N

HPVDD=3.3V, RL=16

Ω,

PO=20mW

HPCOM=LCOM=0

DACMIXBIAS=0

-78

HPVDD = 3.3V

HPCOM=LCOM=0

DACMIXBIAS=1

100

HPVDD = 2.4V

HPCOM=LCOM=1

DACMIXBIAS=1

Signal to Noise Ratio

(A-weighted)

SNR

HPVDD = 1.8V

HPCOM=LCOM=0

DACMIXBIAS=0

Headphone Output Ground

noise rejection

10mV, 20kHz noise on HPCOM,

HPCOM enabled

Line Output Ground Noise

Rejection

10mV, 20kHz noise on LCOM,

LCOM enabled

Analogue Reference Levels

Midrail Reference Voltage

VMID

–3%

AVDD/2

+3%

Buffered Reference Voltage

VREF

–3%

AVDD/2

+3%

Digital Input / Output

Input HIGH Level

VIH

0.7

×DB

VDD

Input LOW Level

VIL

0.3

×DBVDD

WM8988 Datasheet(PDF) 8 Page - Wolfson Microelectronics plc

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