WM8786

6

Rev 4.4

ELECTRICAL CHARACTERISTICS

Test Conditions

1kHz signal, A-weighted, fs = 48kHz, MCLK = 256fs, 24-bit audio data, Slave Mode unless otherwise stated.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ADC Performance

Full Scale Input Signal Level

(for ADC 0dB Input)

2.0

Input resistance

10

kΩ

Input capacitance

10

pF

Signal to Noise Ratio

SNR

A-weighted,

@ fs = 48kHz

102

111

dB

Unweighted,

@ fs = 48kHz

108

Signal to Noise Ratio

SNR

A-weighted,

@ fs = 96kHz

111

dB

Unweighted,

@ fs = 96kHz

108

Signal to Noise Ratio

SNR

A-weighted,

@ fs = 192kHz

111

dB

Unweighted,

@ fs = 192kHz

108

Total Harmonic Distortion

THD

1kHz, -0.1dB Full Scale

@ fs = 48kHz

-102

-92

dB

1kHz, -0.1dB Full Scale

@ fs = 96kHz

-102

1kHz, -0.1dB Full Scale

@ fs = 192kHz

-102

Total Harmonic Distortion

THD

1kHz, -0.1dB Full Scale

@ fs = 48kHz

0.0008

0.0025

%

1kHz, -0.1dB Full Scale

@ fs = 96kHz

0.0008

1kHz, -0.1dB Full Scale

@ fs = 192kHz

0.0008

Dynamic Range

DNR

-60dBFS

102

111

dB

Channel Level Matching

20kHz signal

0.1

dB

Power Supply Rejection Ratio

(AVDD, DVDD)

PSRR

100mV (peak-peak) 1kHz

50

dB

100mV (peak-peak)

20Hz to 20kHz

45

Digital Logic Levels (CMOS Levels)

Input LOW level

0.3 x DVDD

V

Input HIGH level

0.7 x DVDD

V

Input leakage current

-1

±0.2

+1

µA

Input capacitance

5

pF

Output LOW

0.1 x DVDD

V

Output HIGH

0.9 x DVDD

V

Analogue Reference Levels

Midrail Reference Voltage

VMID

AVDD to VMID

and VMID to VREFGND

–3%

AVDD/2

+3%

V

Potential Divider Resistance

AVDD to VMID

and VMID to GND

50

k

Ω

Buffered Reference Voltage

VREF

–3%

0.8 x AVDD

+3%

V