WM8581 데이터 시트보기 (PDF) - Wolfson Microelectronics plc

부품명

상세내역

제조사

WM8581

Multichannel CODEC with S/PDIF Transceiver

Wolfson Microelectronics plc 

Product Preview

WM8581

Test Conditions

AVDD, PVDD, VREFP = 5V, DVDD = 3.3V, AGND, VREFN = 0V, PGND, DGND = 0V, TA = +25oC, 1kHz Signal, fs = 48kHz,

24-Bit Data, Slave Mode, MCLK, ADCMCLK = 256fs, 1Vrms Input Signal Level unless otherwise stated.

PARAMETER

SYMBOL TEST CONDITIONS

MIN

TYP

MAX

UNIT

Analogue Reference Levels

Reference voltage

VVMID

VREFP/2 – VREFP/2 VREFP/2 +

V

50mV

50mV

Potential divider resistance

RVMID

VREFP to VMID and

2050

kΩ

VMID to VREFN

S/PDIF Transceiver Performance

Jitter on recovered clock

50

ps

S/PDIF Input Levels CMOS MODE

Input LOW level

VIL

0.3 X DVDD

V

Input HIGH level

VIH

0.7 X DVDD

V

Input capacitance

1.25

pF

Input Frequency

36

MHz

S/PDIF Input Levels Comparator MODE

Input capacitance

1.31

pF

Input resistance

18

Ω

Input frequency

25

MHz

Input Amplitude

200

0.5 X DVDD

mV

PLL

Period Jitter

80

ps(rms)

XTAL

Input XTI LOW level

VXIL

0

557

mV

Input XTI HIGH level

VXIH

853

mV

Input XTI capacitance

CXJ

3.32

4.491

pF

Input XTI leakage

Output XTO LOW

IXleak

VXOL

15pF load capacitors

28.92

86

38.96

mA

278

mV

Output XTO HIGH

VXOH

15pF load capacitors 1.458

1.942

V

Supply Current

Analogue supply current

AVDD, VREFP = 5V

45

mA

Analogue supply current

AVDD, VREFP = 3.3V

30

mA

Digital supply current

DVDD = 3.3V

16

mA

Power Down

10

µA

Table 5 Electrical Characteristics

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 done with 20kHz low pass filter, and where noted an A-weight filter. Failure to use such a filter

will result in higher THD+N 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. VMID decoupled with 10uF and 0.1uF capacitors (smaller values may result in reduced performance).

w

PP Rev 1.0 March 2006

11

Share Link: