WM9701A

Production Data

WOLFSON MICROELECTRONICS LTD.

PD Rev 3.2 January 2001

4

Test Conditions:

DAC Circuit Specifications 48kHz Sampling

AVDD = 5V

85

96

dB

SNR A-weighted (Note 1)

AVDD = 3.3V

93

dB

VREF = 2.5V

1.0

Vrms

Full scale output voltage

VREF = 1.65V

0.66

Vrms

THD

-3dBFS input

74 (0.2%)

90

dB

Frequency response

20

19,200

Hz

Transition band

19,200

28,800

Hz

Stop band

28,800

Hz

Out of band rejection

-40

dB

Spurious tone reduction

-100

dB

PSRR

20 to 20kHz

46

dB

ADC Circuit Specifications 48kHz Sampling

AVDD = 5V

75

92

dB

SNR A-weighted (Note 1)

AVDD = 3.3V

90

dB

VREF = 2.5V,

AVDD = 5V

1.0

Vrms

ADC input for full scale output

VREF = 1.65V,

AVDD = 3.3V

0.66

Vrms

THD

-6dBV input

74

90

dB

Frequency response

20

19,200

Hz

Transition band

19,200

28,800

Hz

Stop band

28,800

Hz

Stop band rejection

-74 (0.2%)

dB

PSRR

20 to 20kHz

40

dB

Mixer Circuit Specifications 48kHz Sampling

AVDD = 5V

90

95

dB

SNR CD path A-weighted

(Note 1)

AVDD = 3.3V

93

dB

AVDD = 5V

85

95

dB

SNR Other paths A-weighted

(Note 1)

AVDD = 3.3V

93

dB

AVSS

1.0

AVDD

Vrms

Maximum input voltage

0.66

Maximum output voltage on

LINEOUT

1.0

Vrms

THD

0dBV input

-74 (0.2%)

-92

dB

Frequency response (+/-1dB)

20

20,000

Hz

Input impedance (CD inputs)

At any gain

10

15

kohm

At max gain

10

20

kohm

Input impedance (other mixer

inputs)

At 0db gain

100

kohm

At max gain

80

kohm

Input impedance MIC inputs

At 0db gain

10

15

kohm

PSRR

20 to 20kHz

40

dB

Clock Frequency Range

Crystal clock

24.576

MHz

BIT_CLK frequency

12.288

MHz

SYNC frequency

48.0

kHz

Note:

1.

SNR is the ratio of 0dB full scale signal level to output level with no signal present, A-weighted and 20 - 20kHz bandwidth.