WM8741 Просмотр технического описания (PDF) - Cirrus Logic

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WM8741

24-bit 192kHz DAC with Advanced Digital Filtering

Cirrus Logic 

Production Data

WM8741

TEST CONDITIONS

AVDD = 5V, DVDD = 3.3V, AGND, DGND = 0V, TA = +25oC, 1kHz test signal, fs = 48kHz, MCLK = 512fs unless otherwise

stated.

PARAMETER

Internal Analogue Filter

Bandwidth

Passband edge response

Analogue Output Levels

PCM full scale differential

output level

DSD Direct differential

output level

DSD Plus differential output

level

Minimum resistance load

SYMBOL

TEST CONDITIONS

-3dB

20kHz

Into 10kΩ load, 0dBFS input

Into 10kΩ load, 0dBDSD input

Into 10kΩ load, 0dBDSD input

To midrail or AC coupled

MIN

TYP

MAX

UNIT

474

kHz

-0.0077

dB

2

0.948

0.991

VRMS

VRMS

VRMS

2

kΩ

Maximum capacitance load

Output DC level

Reference Levels

Potential divider resistance

Voltage at VMIDL/VMIDR

AVDD to VMIDL/VMIDR and

VMIDL/VMIDR to AGND

1

nF

AVDD/2

V

10

kΩ

AVDD/2

V

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 over a 20Hz to 20kHz bandwidth.

2. All performance measurements done with 20kHz low pass 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.

w

PD, Rev 4.3, February 2013

11

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