WM8580 데이터 시트보기 (PDF) - Wolfson Microelectronics plc

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WM8580

Multichannel CODEC with S/PDIF Transceiver

Wolfson Microelectronics plc 

Production Data

WM8580

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

14

kΩ

VMID to VREFN

VMIDSEL = 1

VREFP to VMID and

44

kΩ

VMID to VREFN

VMIDSEL = 0

S/PDIF Transceiver Performance

Jitter on recovered clock

S/PDIF Input Levels CMOS MODE

Input LOW level

VIL

Input HIGH level

VIH

Input capacitance

Input Frequency

S/PDIF Input Levels Comparator MODE

Input capacitance

Input resistance

Input frequency

Input Amplitude

PLL

Period Jitter

XTAL

Input XTI LOW level

Input XTI HIGH level

Input XTI capacitance

VXIL

VXIH

CXJ

Input XTI leakage

Output XTO LOW

Output XTO HIGH

Supply Current

IXleak

VXOL

VXOH

Analogue supply current

Analogue supply current

Digital supply current

Power Down

50

ps

0.3 X DVDD

V

0.7 X DVDD

V

1.25

pF

36

MHz

10

pF

23

kΩ

25

MHz

200

0.5 X DVDD

mV

80

ps(rms)

15pF load capacitors

15pF load capacitors

0

853

3.32

28.92

86

1.458

557

mV

mV

4.491

pF

38.96

mA

278

mV

1.942

V

AVDD, VREFP = 5V

45

mA

AVDD, VREFP = 3.3V

30

mA

DVDD = 3.3V

25

mA

500

µA

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).

4. PSSR measured with VMID set to high impedance

w

PD Rev 4.3 August 2007

11

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