WM8777 查看數據表（PDF） - Wolfson Microelectronics plc
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WM8777 Datasheet PDF : 102 Pages
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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
ADC, All DACs
ADC, All DACs, Osc
55.35
53.45
53.44
ADC, All DACs, Osc, PLL
ADC, All DACs, Osc, PLL, S/PDIF
ADC, All DACs, Osc, PLL, S/PDIF, Tone
ADC, All DACs, Osc, PLL, S/PDIF, Tone,
HP (16 Ohm)
53.38
53.38
87.53
146.60
Power-down, no clks applied
Power-down, clks applied
Software RESET
0.028
0.028
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 1.94 November 2004
11
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