WM8903 datasheet(18/178 Pages) WOLFSON

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WM8903

Production Data

PD, Rev 4.5, June 2012

Stereo Playback to Headphones - DAC input to HPOUTL+HPOUTR pins with 30Ω load.

Test conditions

DACBIAS_SEL = 01b (Normal bias x 0.5)

DACVMID_BIAS_SEL = 11b (Normal bias x 0.75)

PGA_BIAS = 011b (Normal bias x 0.5)

CP_DYN_PWR = 1b (Charge pump controlled by real-time audio level)

Variant test conditions

AVDD

DCVDD

DBVDD

CPVDD

TOTAL

Slave mode, 44.1kHz sample rate, quiescent

1.8

1.60

1.2

0.76

1.8

0.00

1.8

0.41

4.5

Master mode, 44.1kHz sample rate, quiescent

1.8

1.60

1.2

0.76

1.8

0.09

1.8

0.41

4.7

Master mode, 44.1kHz, Po = 0.1mW/channel

1.8

1.60

1.2

0.90

1.8

0.09

1.8

1.85

7.5

Master mode, 44.1kHz, Po = 1mW/channel

1.8

1.60

1.2

0.92

1.8

0.09

1.8

5.77

14.5

Master mode, 8kHz sample rate, quiescent

1.8

1.60

1.2

0.65

1.8

0.03

1.8

0.41

4.4

Master mode, 8kHz, Po = 0.1mW/channel

1.8

1.60

1.2

0.71

1.8

0.03

1.8

1.85

7.1

Stereo Playback to Line-out - DAC input to LINEOUTL+LINEOUTR or HPOUTL+HPOUTR pins with 3.01kΩ / 50pF load

Test conditions:

CP_DYN_PWR = 1b (Charge pump controlled by real-time audio level)

Variant test conditions

AVDD

DCVDD

DBVDD

CPVDD

TOTAL

44.1kHz sample rate

1.8

1.95

1.2

0.76

1.8

0.09

1.8

0.32

5.2

8kHz sample rate

1.8

1.95

1.2

0.68

1.8

0.03

1.8

0.32

4.9

Stereo analogue bypass to headphones - IN1L/R, IN2L/R or IN3L/R pins to HPOUTL+HPOUTR pins with 30Ω load.

Test conditions: Audio interface disabled

Note that the Analogue bypass configuration does not benefit from the Class W dynamic control, and the power consumption is

greater in this case than the DAC to Line-Out case. See “Charge Pump” section.

Variant test conditions

AVDD

DCVDD

DBVDD

CPVDD

TOTAL

Quiescent

1.8

1.46

1.2

0.12

1.8

0.00

1.8

1.54

5.5

Po = 0.1mW/channel

1.8

1.46

1.2

0.12

1.8

0.00

1.8

4.54

11.0

Off

Test conditions: No Clocks applied

Variant test conditions

AVDD

DCVDD

DBVDD

CPVDD

TOTAL

None

1.8

0.01

1.2

0.012

1.8

0.003

1.8

0.005

0.047

WM8903 Datasheet(PDF) 18 Page - Wolfson Microelectronics plc

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