WM9715LGEFLSLASHV datasheet(7/77 Pages) WOLFSON

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Production Data

WM9715L

PD Rev 4.0 December 2007

ELECTRICAL CHARACTERISTICS

AUDIO OUTPUTS

Test Conditions

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

oC, 1kHz signal, fs = 48kHz, 18-bit audio data unless

otherwise stated.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

DAC to Line-Out (L/ROUT2 with 10k

Ω load)

Full-scale output

AVDD = 3.3V, PGA gains

set to 0dB

V rms

Signal to Noise Ratio

(A-weighted)

SNR

Total Harmonic Distortion +

Noise

THD+N

-3dB output

-86

-80

Power Supply Rejection

PSRR

100mV, 20Hz to 20kHz

signal on AVDD

Speaker Output (LOUT2/ROUT2 with 8

Ω bridge tied load, INV=1)

Output Power

Output power is very closely correlated with THD; see below.

Output Power at 1% THD

400

Abs. Max Output Power

POmax

500

Total Harmonic Distortion

THD

PO=150mW

-65

0.05

Signal to Noise Ratio

(A-weighted)

SNR

Headphone Output (HPOUTL/R with 16

Ω or 32Ω load)

Output Power per channel

Output power is very closely correlated with THD; see below.

PO=10mW, RL=16

Ω

-80

PO=10mW, RL=32

Ω

-81

PO=20mW, RL=16

Ω

-77

-70

Total Harmonic Distortion

(Note 1)

THD

PO=20mW, RL=32

Ω

-79

Signal to Noise Ratio

(A-weighted)

SNR

Note:

All THD values are valid for the output power level quoted above – for example, at HPVDD=3.3V and RL=16

Ω, THD is

–80dB when output power is 10mW. Higher output power is possible, but will result in deterioration in THD.

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