WM9711L(2006) 데이터 시트보기 (PDF) - Wolfson Microelectronics plc

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WM9711L
(Rev.:2006)

Low Power Audio CODEC for Portable Applications

Wolfson Microelectronics plc 

Production Data

ELECTRICAL CHARACTERISTICS

WM9711L

AUDIO OUTPUTS

Test Conditions

DBVDD=3.3V, DCVDD = 3.3V, AVDD=HPVDD=SPKVDD =3.3V, TA = +25oC, 1kHz signal, fs = 48kHz, 18-bit audio data unless

otherwise stated.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

DAC to Line-Out (HPOUTL/R or MONOOUT with 10kΩ / 50pF load)

Full-scale output

AVDD = 3.3V, PGA gains

1

set to 0dB

V rms

Signal to Noise Ratio

SNR

85

94

dB

(A-weighted)

Total Harmonic Distortion

THD

-3dB output

-87

-80

dB

Power Supply Rejection

PSRR

20Hz to 20kHz

50

dB

Speaker Output (LOUT2/ROUT2 with 8Ω bridge tied load, INV=1)

Output Power

PO

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

Output Power at 1% THD

PO

400

mW

Abs. Max Output Power

POmax

500

mW

Total Harmonic Distortion

THD

PO=200mW

-66

dB

0.05

%

Signal to Noise Ratio

SNR

90

100

dB

(A-weighted)

Headphone Output (HPOUTL/R, OUT3 or LOUT2/ROUT2 with 16Ω or 32Ω load)

HPVDD=1.8V, RL=32Ω

5

mW

Total Harmonic Distortion

THD

PO=10mW, RL=16Ω

-76

dB

(Note 1)

PO=10mW, RL=32Ω

-73

PO=20mW, RL=16Ω

-75

PO=20mW, RL=32Ω

-78

Signal to Noise Ratio

SNR

AVDD=3.3V

90

95

dB

(A-weighted)

Note:

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

–76dB when output power is 10mW. Higher output power is possible, but will result in a deterioration in THD.

w

PD Rev 4.3 August 2006

7

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