WM8766 View Datasheet(PDF) - Cirrus Logic
Part Name
Description
MFG CO.
'WM8766' PDF : 36 Pages View PDF
WM8766
Production Data
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
Digital supply range
DVDD
2.7
3.6
Analogue supply range
AVDD, VREFP
2.7
5.5
Ground
AGND, VREFN, DGND
0
Difference DGND to AGND
-0.3
0
+0.3
Note: Digital supply DVDD must never be more than 0.3V greater than AVDD for normal operation of the device .
UNIT
V
V
V
V
ELECTRICAL CHARACTERISTICS
Test Conditions
AVDD, VREFP = 5V, DVDD = 3.3V, AGND, VREFN = 0V, DGND = 0V, TA = +25oC, fs = 48kHz, MCLK = 256fs.
PARAMETER
SYMBOL TEST CONDITIONS
MIN
TYP
MAX
Digital Logic Levels (CMOS Levels)
Input LOW level
VIL
0.3 x DVDD
Input HIGH level
VIH
Output LOW
VOL
Output HIGH
VOH
Analogue Reference Levels
IOL=1mA
IOH= -1mA
0.7 x DVDD
0.9 x DVDD
0.1 x DVDD
Reference Voltage
VVMID
VREFP/2
Potential Divider Resistance
RVMID
(VREFP to VMID) and
133
(VMID to VREFN)
DAC Performance (Load = 10kΩ, 50pF)
0dBFs Full Scale Output
Voltage
1.0 x
VREFP/5
SNR (Note 1,2,4)
A-weighted,
95
103
@ fs = 48kHz
SNR (Note 1,2,4)
A-weighted
101
@ fs = 96kHz
SNR (Note 1,2,4)
A-weighted
101
@ fs = 192kHz
SNR (Note 1,2,4)
A-weighted
101
@ fs = 48kHz, AVDD =
3.3V
SNR (Note 1,2,4)
A-weighted
99
@ fs = 96kHz, AVDD =
3.3V
Dynamic Range (Note 2,4)
DNR
A-weighted, -60dB full
95
103
scale input
Total Harmonic Distortion (THD)
1kHz, 0dBFs
-90
-80
Mute Attenuation
1kHz Input, 0dB gain
100
DAC Channel Separation
100
Power Supply Rejection Ratio
PSRR
1kHz 100mVpp
50
20Hz to 20kHz
45
100mVp-p
Supply Current
Analogue Supply Current
AVDD, VREFP = 5V
13.8
Digital Supply Current
DVDD = 3.3V
11.0
UNIT
V
V
V
V
V
kΩ
Vrms
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
mA
mA
w
PD Rev 4.1 July 2005
6
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