WM8522 Wolfson Microelectronics plc, WM8522 Datasheet - Page 6

• Manufacturer Part Number: WM8522
• Description: 24-bit, 192khz 6-channel Dac With 1.7vrms Line Driver
• Manufacturer: Wolfson Microelectronics plc

WM8522
RECOMMENDED OPERATING CONDITIONS
Note: Digital supply DVDD must never be more than 0.3V greater than AVDD for normal operation of the device.
ELECTRICAL CHARACTERISTICS
Notes:
1.
2.
3.
w
PARAMETER
Digital supply range
Analogue supply range
Ground
Difference DGND to AGND
Test Conditions
AVDD, VREFP = 5V, DVDD = 3.3V, AGND, VREFN = 0V, DGND = 0V, T
PARAMETER
Digital Logic Levels (CMOS Levels)
Input LOW level
Input HIGH level
Output LOW
Output HIGH
Analogue Reference Levels
Reference Voltage
Potential Divider Resistance
DAC Performance (Load = 10kΩ, 50pF)
0dBFs Full Scale Output
Voltage
SNR (Note 1,2,4)
SNR (Note 1,2,4)
SNR (Note 1,2,4)
Dynamic Range (Note 2,4)
Total Harmonic Distortion (THD)
Mute Attenuation
DAC Channel Separation
Power Supply Rejection Ratio
Supply Current
Analogue Supply Current
Digital Supply Current
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).
AGND, VREFN, DGND
AVDD, VREFP
SYMBOL
SYMBOL
DVDD
PSRR
V
R
DNR
V
V
V
V
VMID
VMID
OH
OL
IH
IL
(VREFP to VMID) and
A-weighted, -60dB full
1kHz Input, 0dB gain
AVDD, VREFP = 5V
TEST CONDITIONS
(VMID to VREFN)
1kHz 100mVpp
20Hz to 20kHz
@ fs = 192kHz
@ fs = 48kHz
TEST CONDITIONS
DVDD = 3.3V
@ fs = 96kHz
1kHz, 0dBFs
A-weighted,
A-weighted
A-weighted
scale input
100mVp-p
I
I
OH
OL
= -1mA
=1mA
A
0.7 x DVDD
0.9 x DVDD
= +25
VREFP/5
1.6 x
MIN
95
95
o
-0.3
MIN
C, fs = 48kHz, MCLK = 256fs.
2.7
4.5
VREFP/2
VREFP/5
1.7 x
TYP
102
101
101
102
100
100
-85
50
50
45
12
10
TYP
0
0
0.3 x DVDD
0.1 x DVDD
VREFP/5
PD, Rev 4.1, July 2009
1.8 x
MAX
-78
MAX
+0.3
3.6
5.5
Production Data
Vrms
UNIT
UNIT
mA
mA
kΩ
dB
dB
dB
dB
dB
dB
dB
dB
dB
V
V
V
V
V
V
V
V
V
6