WM8772
Production Data
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
DVDD
TEST CONDITIONS
MIN
2.7
TYP
MAX
3.6
UNIT
Digital supply range
Analogue supply range
Ground
V
V
V
V
AVDD, VREFP
AGND, VREFN, DGND
2.7
5.5
0
0
Difference DGND to AGND
-0.3
+0.3
Note: Digital supply DVDD must never be more than 0.3V greater than AVDD.
ELECTRICAL CHARACTERISTICS
Test Conditions
AVDD, VREFP = 5V, DVDD = 3.3V, AGND, VREFN = 0V, DGND = 0V, TA = +25oC, fs = 48kHz, MCLK = 256fs, 32-pin TQFP
version unless otherwise stated. ADC/DAC in Slave Mode unless otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Vrms
dB
DAC Performance (Load = 10kΩ, 50pF)
0dBFs Full scale output voltage
1.0 x
VREFP/5
103
SNR (Note 1,2,4)
SNR (Note 1,2,4)
SNR (Note 1,2,4)
SNR (Note 1,2,4)
A-weighted,
@ fs = 48kHz
A-weighted
95
102
101
99
dB
@ fs = 96kHz
A-weighted
dB
@ fs = 192kHz
A-weighted
dB
@ fs = 48kHz, AVDD =
3.3V
SNR (Note 1,2,4)
A-weighted
99
dB
dB
@ fs = 96kHz, AVDD =
3.3V
Dynamic Range (Note 2,4)
DNR
A-weighted, -60dB full
scale input
90
103
Total Harmonic Distortion (THD)
Mute Attenuation
1kHz, 0dB.Fs
-90
100
100
50
-80
dB
dB
dB
dB
dB
1kHz Input, 0dB gain
DAC channel separation
Power Supply Rejection Ratio
PSRR
1kHz 100mVp-p
20Hz to 20kHz
100mVp-p
45
PD Rev 4.2 October 2005
10
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
