参数资料
型号: TFA9812HN/N1,557
厂商: NXP SEMICONDUCTORS
元件分类: 音频/视频放大
英文描述: 15 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC48
封装: 7 X 7 MM, 0.85 MM HEIGHT, PLASTIC, MO-220, SOT619-8, HVQFN-48
文件页数: 5/66页
文件大小: 386K
代理商: TFA9812HN/N1,557
TFA9812_2
NXP B.V. 2009. All rights reserved.
Preliminary data sheet
Rev. 02 — 22 January 2009
13 of 66
NXP Semiconductors
TFA9812
BTL stereo Class-D audio amplier with I2S input
8.3 Power-up/power-down
8.3.1 Power-up
Figure 3 and Table 10 describe the power-up timing while Table 11 shows the pin control
for initiating a power-up reset.
[1]
Mute in Legacy mode is controlled by AVOL pin.
Fig 3.
Power-up/power-down timing
external
voltage
supplies
POWERUP
pin
I2C
available
ENABLE
pin
PWM
outputs
twake
td(on)
td(mute_off)
td(soft_mute)
010aaa219
soft mute
setting in
I2C mode
AVOL pin
in Legacy
mode
Operating
mode active
Table 10.
Power-up/power-down timing
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
twake
wake-up
time
I2C control
-
4
-
ms
td(on)
turn-on
delay time
-
70
-
135
ms
td(mute_off)
mute off
delay time
-
128/fs
s
td(soft_mute)
Soft mute
delay time
I2C control
-
128/fs
s
legacy
control[1]
-15
-
ms
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