WM9710

Production Data

w

PD Rev 4.0 December 2003

7

ELECTRICAL CHARACTERISTICS

Test Characteristics:

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Digital Logic Levels (DVDD = 3.3V)

Input LOW level

DGND - 0.3

0.8

V

Input HIGH level

2.2

DVDD + 0.3

V

Output LOW

I Load = 2mA

0.10 x DVDD

V

Output HIGH

I Load = -2mA

0.90 x DVDD

V

Analogue Audio I/O Levels (Input Signals on any audio inputs, Outputs on LINEOUT L, R and MONO and HPOUT L,R)

Input level

Minimum input

impedance = 10k

AGND

-100mV

AVDD

+100mV

V

Output level to LINEOUT L,R

Into 10k

Ω load

AGND

+300mV

Near rail to

rail

AVDD

-300mV

V

Output level to HPOUT L,

HPOUTR and MONOOUT

Into 16

Ω load

AGND

+300mV

Near rail to

rail

AVDD

-300mV

V

Reference Levels

Reference input/output

CAP2

0.47 AVDD

0.50 AVDD

0.53 AVDD

V

CAP2 impedance

75

k

Ω

Mixer reference

VREF

Buffered

CAP2

V

MIC reference

VREFOUT

Buffered

CAP2

V

MIDBUFF current source

(pins VREF and VREFOUT)

AVDD = 3.3V

5

10

mA

MIDBUFF current sink

(pins VREF and VREFOUT)

AVDD = 3.3V

-5

-10

mA

AUDIO DAC to Line-out (10k

Ω

Ω

Ω

Ω load)

SNR A-weighted (Note 2)

85

91

dB

Full scale output voltage

VREF = 1.65V

0.7

Vrms

Total Harmonic Distortion +

Noise

THD+N

-3dBfs input

-84

0.006

-74

0.02

dB

%

PSRR

20 to 20kHz, without

supply decoupling

-40

dB

AUDIO ADC

ADC input for full scale output

VREF = 1.65V

0.7

Vrms

Signal to Noise Ratio

A-weighted (Note 2)

SNR

80

86

dBfs

Total Harmonic Distortion+Noise

THD+N

-6dBfs input

-79

-72

dB

Power Supply Rejection Ratio

PSRR

20 to 20kHz, without

supply decoupling

-40

dB

Digital Filter Characteristics

Frequency response

20

19,200

Hz

Transition band

19,200

28,800

Hz

Stop band

28,800

Hz

ADC

-74

Stop band attenuation

DAC

-40

dB