WM9712CLGEFL/V 查看數據表（PDF） - Wolfson Microelectronics plc

零件编号

产品描述 (功能)

生产厂家

WM9712CLGEFL/V

AC’97 Audio and Touchpanel CODEC

Wolfson Microelectronics plc 

Production Data

ELECTRICAL CHARACTERISTICS

WM9712L

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 10k / 50pF load)

Full-scale output

AVDD = 3.3V, PGA gains

1

set to 0dB

V rms

Signal to Noise Ratio

(A-weighted)

SNR

85

94

dB

Total Harmonic Distortion

THD

-3dB output

-87

-80

dB

Power Supply Rejection

PSRR

100mV, 20Hz to 20kHz

50

dB

signal on AVDD

Speaker Output (LOUT2/ROUT2 with 8 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

(A-weighted)

SNR

90

100

dB

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

Output Power per channel

PO

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

Total Harmonic Distortion

THD

PO=10mW, RL=16

-76

dB

PO=10mW, RL=32

-73

PO=20mW, RL=16

-75

-70

PO=20mW, RL=32

-78

Signal to Noise Ratio

SNR

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=16, THD is

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

w

PD, Rev 4.6, November 2011

7

Share Link: