WM8591 View Datasheet(PDF) - Wolfson Microelectronics plc

Part Name

Description

View to exact match

WM8591

24-bit, 192kHz Stereo CODEC

Wolfson Microelectronics plc 

Production Data

WM8591

Test Conditions

AVDD = 5V, DVDD = 3.3V, AGND = 0V, DGND = 0V, TA = +25oC, fs = 48kHz, MCLK = 256fs unless otherwise stated.

Dynamic Range (note 2)

DNR

A-weighted, -60dB

93

102

dB

full scale input

Total Harmonic Distortion

THD

1kHz, -3dBFs

-95

-85

dB

ADC Channel Separation

1kHz Input

85

dB

Channel Level Matching

1kHz signal

0.1

dB

Channel Phase Deviation

1kHz signal

0.06

Degree

Programmable Gain Step Size

0.25

0.5

0.75

dB

Programmable Gain Range

1kHz Input

-21

+24

dB

(Analogue)

Programmable Gain Range

1kHz Input

-103

-21.5

dB

(Digital)

Mute Attenuation (Note 4)

1kHz Input, 0dB gain

97

dB

Power Supply Rejection Ratio

PSRR

1kHz 100mVpp

59

dB

Input Resistance

20Hz to 20kHz

56

dB

100mVpp

PGA Gain = +24dB

4.5

kΩ

PGA Gain = 0dB

37.4

kΩ

PGA Gain = -21dB

69.0

kΩ

Input Capacitance

1

pF

Supply Current

Analogue supply current

AVDD = 5V

60

mA

Digital supply current

DVDD = 3.3V

6

mA

Analogue Powerdown Current

AVDD = 5V

132

µA

Digital Powerdown Current

DVDD = 3.3V

2.7

µA

Crosstalk

DAC to ADC

1kHz signal, ADC fs =

115

dB

48kHz, DAC fs =

44.1kHz

20kHz signal, ADC fs =

130

dB

48kHz, DAC fs =

44.1kHz

ADC to DAC

1kHz signal, ADC fs =

131

dB

48kHz, DAC fs =

44.1kHz

20kHz signal, ADC fs =

138

dB

48kHz, DAC fs =

44.1kHz

Notes:

1. Ratio of output level with 1kHz full scale input, to the output level with all zeros into the digital input, measured ‘A’

weighted.

2. All performance measurements obtained with 20kHz low pass filter, and where noted an A-weight filter. Failure to use

such a filter will result in higher THD and lower SNR and Dynamic Range readings than are found in the Electrical

Characteristics. The low pass filter removes out of band noise; although it is not audible it may affect dynamic

specification values.

3. All performance measurements obtained using certain timings conditions (ADCLRC and DACLRC should be

synchronous with MCLK). Please refer to section ‘Digital Audio Interface’.

4. A better MUTE Attenuation can be achieved if the ADC gain is set to minimum.

5. All performance measurements specified for ADC and DAC operating in isolation.

w

PD Rev 4.0 December 2005

7

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