WM8729_06 Datasheet, PDF (6/18 Pages) Wolfson Microelectronics plc – 24-bit, 192kHz Stereo DAC

WM8729
Production Data
DC ELECTRICAL CHARACTERISTICS
PARAMETER
Digital supply range
Analogue supply range
Ground
Difference DGND to AGND
Analogue supply current
Digital supply current
Analogue supply current
Digital supply current
SYMBOL
DVDD
AVDD
AGND, DGND
TEST CONDITIONS
MIN
3.0
3.0
-0.3
AVDD = 5V
DVDD = 5V
AVDD = 3.3V
DVDD = 3.3V
TYP
0
0
19
8
18
4
MAX
5.5
5.5
+0.3
UNIT
V
V
V
V
mA
mA
mA
mA
ELECTRICAL CHARACTERISTICS
Test Conditions
AVDD, DVDD = 5V, AGND = 0V, DGND = 0V, TA = +25^oC, fs = 48kHz, MCLK = 256fs unless otherwise stated.
PARAMETER
SYMBOL TEST CONDITIONS
MIN
TYP
MAX
Digital Logic Levels (TTL Levels)
Input LOW level
VIL
0.8
Input HIGH level
VIH
Output LOW
VOL
Output HIGH
VOH
Analogue Reference Levels
IOL = 1mA
IOH = 1mA
2.0
DVDD - 0.3V
DGND + 0.3V
Reference voltage
VMID
(VREFP - (VREFP - (VREFP -
VREFN)/2 - VREFN)/2 VREFN)/2 +
50mV
50mV
Potential divider resistance
RVMID
12k
DAC Output (Load = 10kΩ. 50pF)
0dBFs Full scale output voltage
At DAC outputs
1.1 x
AVDD/5
SNR (Note 1,2,3)
A-weighted,
100
106
@ fs = 48kHz
SNR (Note 1,2,3)
A-weighted
106
@ fs = 96kHz
SNR (Note 1,2,3)
A-weighted
106
@ fs = 192kHz
SNR (Note 1,2,3)
A-weighted,
105
@ fs = 48kHz
AVDD, DVDD = 3.3V
SNR (Note 1,2,3)
A-weighted
103
@ fs = 96kHz
AVDD, DVDD = 3.3V
SNR (Note 1,2,3)
Non ‘A’ weighted @ fs
106
= 48kHz
THD (Note 1,2,3)
1kHz, 0dBFs
-97
THD+N (Dynamic range, Note 2)
1kHz, -60dBFs
100
106
DAC channel separation
100
Analogue Output Levels
Output level
Load = 10kΩ, 0dBFS
1.1
Load = 10kΩ, 0dBFS,
(AVDD = 3.3V)
0.726
Gain mismatch
±1
channel-to-channel
UNIT
V
V
V
V
V
Ω
Vrms
dB
dB
dB
dB
dB
dB
dB
dB
dB
VRMS
VRMS
%FSR
w
PD Rev 4.1 June 2006
6