WM8581 Wolfson Microelectronics Ltd., WM8581 Datasheet - Page 14

• Manufacturer Part Number: WM8581
• Description: Multichannel Codec with S/pdif Transceiver
• Manufacturer: Wolfson Microelectronics Ltd.

WM8581
Table 5 Electrical Characteristics
Notes:
1.
2.
3.
4.
w
Test Conditions
AVDD, PVDD, VREFP = 5V, DVDD = 3.3V, AGND, VREFN = 0V, PGND, DGND = 0V, T
24-Bit Data, Slave Mode, MCLK, ADCMCLK = 256fs, 1V
PARAMETER
Potential divider resistance
S/PDIF Transceiver Performance
Jitter on recovered clock
S/PDIF Input Levels CMOS MODE
Input LOW level
Input HIGH level
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
Input XTI leakage
Output XTO LOW
Output XTO HIGH
Supply Current
Analogue supply current
Analogue supply current
Digital supply current
Power Down
Ratio of output level with 1kHz full scale input, to the output level with all zeros into the digital input, measured ‘A’ weighted.
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.
VMID decoupled with 10uF and 0.1uF capacitors (smaller values may result in reduced performance).
PSSR measured with VMID set to high impedance
SYMBOL
VX
VX
R
IX
VX
VX
C
V
V
VMID
leak
XJ
IH
IL
OH
OL
IH
IL
AVDD, VREFP = 3.3V
15pF load capacitors
15pF load capacitors
VREFP to VMID and
VREFP to VMID and
AVDD, VREFP = 5V
TEST CONDITIONS
VMID to VREFN
VMID to VREFN
VMIDSEL = 1
VMIDSEL = 0
DVDD = 3.3V
rms
Input Signal Level unless otherwise stated.
0.7 X DVDD
28.92
1.458
3.32
200
853
MIN
86
0
A
= +25
1.25
TYP
500
14
44
50
10
23
80
45
30
25
o
C, 1kHz Signal, fs = 48kHz,
0.3 X DVDD
0.5 X DVDD
4.491
38.96
1.942
MAX
557
278
PD Rev 4.0 April 2007
36
25
Production Data
ps(rms)
UNIT
MHz
MHz
mV
mV
mV
mA
mV
mA
mA
mA
kΩ
kΩ
kΩ
µA
pF
pF
pF
ps
V
V
V
14