WM8959 datasheet(15/155 Pages) WOLFSON

15 / 155 page

Pre-Production

WM8959

PP, May 2008, Rev 3.1

Test Conditions

DCVDD = 1.8V, DBVDD = 3.3V, AVDD = HPVDD = 3.3V, SPKVDD = 5V, TA = +25

oC, 1kHz signal, fs = 48kHz,

PGA gain = 0dB, 24-bit audio data unless otherwise stated.

SNR (A-weighted)

THD (PO=20mW)

-71

THD+N (PO=20mW)

-69

THD (PO=5mW)

-67

THD+N (PO=5mW)

-65

Crosstalk (L/R)

-100

AVDD PSRR (217Hz)

HPVDD PSRR (217Hz)

DC Offset at Load

DAC to

LOUT/OUT3 or

ROUT/OUT4,

RL=16

Ω,

AVDD=HPVDD=

3.3V

SNR (A-weighted)

THD (PO=20mW)

-70

THD+N (PO=20mW)

-68

THD (PO=5mW)

-66

THD+N (PO=5mW)

DAC to

LOUT/OUT3 or

ROUT/OUT4,

RL=16

Ω,

AVDD=HPVDD=

2.7V

Fully Differential Headphone Outputs

-64

SNR (A-weighted)

THD (PO=20mW)

-73

THD+N (PO=20mW)

-71

THD (PO=5mW)

-69

THD+N (PO=5mW)

-67

Crosstalk (L/R)

-45

AVDD PSRR (217Hz)

HPVDD PSRR (217Hz)

DAC to LOUT or

ROUT Capless

(OUT3 or 4 as

pseudo GND),

RL=16

Ω,

AVDD=HPVDD=

3.3V

SNR (A-weighted)

THD (PO=20mW)

-70

THD+N (PO=20mW)

-68

THD (PO=5mW)

-67

THD+N (PO=5mW)

DAC to LOUT,

or ROUT

Capless (OUT3

or 4 as pseudo

GND), RL=16

Ω,

AVDD=HPVDD=

2.7V

Ω Capless Headphone Outputs

-65

Minimum Headphone

Resistance

LOUT, ROUT,

OUT3, OUT4

Ω

E10

SPKVDD Leakage

Current

SPKVDD=5.0V,

SNR (A-weighted)

THD (PO=0.5W)

-87

THD+N (PO=0.5W)

-85

THD (PO=1.0W)

-76

THD+N (PO=1.0W)

-74

SPKVDD PSRR(217Hz)

DAC to Speaker

Output (Direct)

AVDD=3.3V,

SPKVDD=5V,

class D, PO

controlled using

DAC volume,

ACGAIN=DCGA

IN=1.52

SNR (A-weighted)

THD (PO=0.5W)

-78

-70

THD+N (PO=0.5W)

-76

-68

THD (PO=1.0W)

-76

-66

THD+N (PO=1.0W)

-74

-64

SPKVDD PSRR(217Hz)

E11

DC Offset at Load

DAC to Speaker

Output (Direct)

AVDD=3.3V,

SPKVDD=5V,

class AB, PO

controlled using

DAC volume

WM8959 Datasheet(PDF) 15 Page - Wolfson Microelectronics plc

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