WM8756EFT Просмотр технического описания (PDF) - Wolfson Microelectronics plc
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WM8756EFT Datasheet PDF : 39 Pages
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WM8756
DC ELECTRICAL CHARACTERISTICS
Advance Information
PARAMETER
Digital supply range
Analogue supply range
Ground
Difference of DGND to AGND
Difference of GR to AGND
Analogue supply current
Digital supply current
Analogue supply current
Digital supply current
Analogue supply current
Digital supply current
SYMBOL
TEST CONDITIONS
MIN
DVDD
3.0
AVDD
3.0
AGND, DGND
-0.3
-0.3
AVDD = 5V
DVDD = 5V
AVDD = 3.3V
DVDD = 3.3V
Power down, stop clock
Power down, stop clock
Table 2 DC electrical characteristics
TYP
0
0
0
58
22
57
11
0.4
0.09
MAX
5.5
5.5
+0.3
+0.3
UNIT
V
V
V
V
V
mA
mA
mA
mA
mA
mA
Note:
1. AVDD must be equal or greater than DVDD. DVDD = 3V, AVDD = 5V is allowed.
2. Where used AVDD represents AVDD1 = AVDD2, AGND represents AGND1 = AGND2 = AGND3 and GR represents
GR0 = GR1 = GR2.
AC ELECTRICAL CHARACTERISTICS
Test Conditions
AVDD = DVDD = 3V, AGND = 0V = DGND = 0V, TA = +25oC, fs = 48kHz, SCKI = 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
2.0
Output LOW
VOL
IOL = 2mA
0.4
Output HIGH
VOH
IOH = 2mA
2.4
Analogue Reference Levels
Reference voltage
VCAP
AVDD2 –
GR2/2
Potential divider resistance
RCAP
25K
DAC Output (Load = 10K ohms. 50pF)
0dBFs Full scale output voltage
At DAC outputs
1.1 x
AVDD1/5
SNR (Note 1,2,3)
A-weighted,
100
106
@ fs = 48KHz
SNR (Note 1,2,3)
A-weighted
98
105
@ fs = 96KHz
SNR (Note 1,2,3)
A-weighted
105
@ fs = 192KHz
SNR (Note 1,2,3)
A-weighted,
103
@ fs = 48KHz
AVDD=DVDD=3.3V
SNR (Note 1,2,3)
A-weighted
103
@ fs = 96KHz
AVDD=DVDD=3.3V
UNIT
V
V
V
V
V
Ohms
Vrms
dB
dB
dB
dB
dB
AI Rev 1.3 October 2001
5
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