WM8768 Wolfson Microelectronics plc, WM8768 Datasheet - Page 6

• Manufacturer Part Number: WM8768
• Description: 24-bit, 192khz 8-channel Dac
• Manufacturer: Wolfson Microelectronics plc

WM8768
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
w
PARAMETER
Digital supply range
Analogue reference supply
Analogue supply range
Ground
Difference DGND to AGND
Test Conditions
AVDD, VREFP = 5V, DVDD = 3.3V, AGND, VREFN = 0V, DGND = 0V, T
otherwise stated.
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 = 10k , 50pF)
0dBFs Full scale output voltage
SNR (Note 1,2,4)
SNR (Note 1,2,4)
SNR (Note 1,2,4)
SNR (Note 1,2,4)
SNR (Note 1,2,4)
Dynamic Range (Note 2,4)
Total Harmonic Distortion (THD)
(Note 4)
Mute Attenuation
DAC channel separation
Power Supply Rejection Ratio
Supply Current
Analogue supply current
Digital Supply Current
AGND, VREFN, DGND
SYMBOL
VREFP
SYMBOL
DVDD
AVDD
PSRR
V
R
DNR
V
V
V
V
VMID
VMID
OH
OL
IH
IL
@ fs = 48kHz, AVDD =
@ fs = 96kHz, AVDD =
A-weighted, -60dB full
1kHz Input, 0dB gain
VREFP to VMID and
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,
AVDD = 5V
A-weighted
A-weighted
A-weighted
A-weighted
scale input
100mVp-p
I
I
OH
OL
3.3V
3.3V
= -1mA
=1mA
A
0.7 x DVDD
0.9 x DVDD
= +25
MIN
95
95
o
-0.3
MIN
C, fs = 48kHz, MCLK = 256fs, unless
2.7
2.7
2.7
VREFP/2
VREFP/5
1.0 x
18.4
14.6
TYP
100
103
101
101
101
103
100
100
-90
96
50
45
TYP
0
0
0.3 x DVDD
0.1 x DVDD
MAX
-83
PD Rev 4.2 July 2005
MAX
+0.3
3.6
5.5
5.5
Production Data
Vrms
UNIT
UNIT
mA
mA
k
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
V
V
V
V
V
V
V
V
V
V
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