WM8721 datasheet(6/34 Pages) WOLFSON

部件名	WM8721

功能描述	Internet Audio DAC with Integrated Headphone Driver

PDF	34 Pages

Scroll/Zoom	100%

制造商	WOLFSON [Wolfson Microelectronics plc]

网页	http://www.wolfsonmicro.com

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WM8721

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WOLFSON MICROELECTRONICS LTD

PP Rev 1.3 November 2000

POWER CONSUMPTION

CURRENT CONSUMPTION

MODE DESCRIPTION

MIN

TYP

MAX

UNITS

Playback

Standby

0.05

Power Down

0.01

Table 1 Powerdown Mode Current Consumption Examples

Notes:

AVDD, HPVDD, DBVDD = 3.3V, AGND = 0V, DCVDD = 1.5V, DGND = 0V, TA = +25

oC. Slave Mode, fs = 48kHz,

MCLK = 256fs (12.288MHz).

All figures are quiescent, with no signal.

The power dissipation in the headphone itself not included in the above table.

MASTER CLOCK TIMING

MCLK

XTIL

XTIH

XTIY

Figure 1 System Clock Timing Requirements

Test Conditions

AVDD, HPVDD, DBVDD = 3.3V, AGND = 0V, DCVDD = 1.5V, DGND = 0V, TA = +25

oC, Slave Mode fs = 48kHz, MCLK =

256fs unless otherwise stated.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

System Clock Timing Information

MCLK System clock pulse width high

TXTIH

MCLK System clock pulse width low

TXTIL

MCLK System clock cycle time

TXTIY

MCLK Duty cycle

40:60

60:40

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