WM8777(2005) 데이터 시트보기 (PDF) - Wolfson Microelectronics plc
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WM8777 Datasheet PDF : 103 Pages
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Pre-Production
WM8777
SUPPLY CURRENT
The supply current of the WM877 depends on the operating mode. For example, the supply current
is lower when the device is used for playback-only (ADC off) or recording-only (DACs off). The supply
currents for various operating modes are shown in Table 1 below.
MODE DESCRIPTION
AVDDDAC
On power-up, no clks applied
2.81
On power-up, clks applied
2.81
ADC
2.71
All DACs
55.35
ADC, All DACs
53.45
ADC, All DACs, Osc
53.44
ADC, All DACs, Osc, PLL
53.38
ADC, All DACs, Osc, PLL, S/PDIF
53.38
ADC, All DACs, Osc, PLL, S/PDIF, Tone
87.53
ADC, All DACs, Osc, PLL, S/PDIF, Tone,
HP (16 Ohm)
146.60
Power-down, no clks applied
0.028
Power-down, clks applied
0.028
Software RESET
2.80
Table 1 Supply Current for Functional Blocks
Notes:
1. DAC Analogue supply (AVDDDAC) = 5V.
2. ADC Analogue supply (AVDDADC) = 5V.
3. PLL Analogue supply (PVDD) = 5V.
4. Digital supply (DVDD) = 3.3V.
SUPPLY CURRENT
AVDDADC PVDD DVDD
1.89
0.30 0.39
1.89
0.30 1.70
38.86
0.30 5.80
1.90
0.30 18.61
38.69
0.30 22.4
38.70
1.12 22.4
38.62
3.74 28.65
38.62
3.43 29.89
38.53
3.43 29.99
38.42
3.44 29.99
TOTAL
5.39
6.70
47.67
76.16
114.84
115.66
124.39
125.32
159.48
218.45
0.172
0.172
1.88
0.30 0.39
0.89
0.30 1.60
2.10
0.3
0.95
5.93
UNIT
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
w
PP Rev 3.0 January 2005
11
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