欧美成人免费电影,国产欧美一区二区三区精品酒店,精品国产a毛片,色网在线免费观看

參數(shù)資料
型號(hào): ADAU1590ASVZ
廠商: ANALOG DEVICES INC
元件分類: 音頻/視頻放大
英文描述: Class-D Audio Power Amplifier
中文描述: 15.5 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48
封裝: ROHS COMPLIANT, MO-026ABC, TQFP-48
文件頁(yè)數(shù): 18/24頁(yè)
文件大小: 453K
代理商: ADAU1590ASVZ
ADAU1590
POWER-UP/POWER-DOWN SEQUENCE
Figure 43 shows the recommended power-up sequence for the
ADAU1590.
Rev. 0 | Page 18 of 24
0
AVDD/DVDD
PVDD
STDN
MUTE
OUTx+/OUTx–
PVDD/2
AINx
AVDD/2
t
PDL-H
t
INT
t
WAIT
t
INT
= 650ms @ 24.576MHz CLOCK
t
PDL-H
= 200μs
t
WAIT
= 10 × R
IN
× C
IN
INTERNAL MUTE
NOTES
1. INTERNAL MUTE IS INTERNAL TO CHIP.
Figure 43. Recommended Power-Up Sequence
The ADAU1590 has a special turn-on sequence that consists of
a fixed internal mute time during which the power stage does
not start switching. This internal mute time depends on the
master clock frequency and is 650 ms for a 24.576 MHz clock.
Also, the internal mute overrides the external MUTE and
ensures that the power stage does not switch on immediately
even if the external MUTE signal is pulled high in less than
650 ms after STDN. The power stage starts switching only
after 650 ms plus a small propagation delay of 200 μs has
elapsed and after MUTE is deasserted. Therefore, it is recom-
mended to ensure that t
WAIT
> t
INT
to prevent the pop and click
during power-on.
Ensure that the MUTE signal is delayed by at least t
WAIT
seconds
after STDN. This time is approximately 10 times the charging
time constant of the input coupling capacitor.
For example, if the input coupling capacitor is 4.7 μF, the time
constant is
T
=
R
×
C
= 20 kΩ × 4.7 μF = 94 ms
Therefore,
t
WAIT
= 10 ×
T
= 940 ms ~ 1 sec.
t
WAIT
is needed to ensure that the input capacitors are charged to
AVDD/2 before turning on the power stage.
When t
WAIT
< t
INT
,
the power stage does not start switching until
650 ms has elapsed after STDN (see Figure 44). However, note
that this method does not ensure pop-and-click suppression
because of less than recommended or insufficient t
WAIT
.
t
INT
= 650ms @ 24.576MHz CLOCK
t
WAIT
< T
INT
0
AVDD/DVDD
PVDD
STDN
MUTE
OUTx+/OUTx–
PVDD/2
AINx
AVDD/2
t
INT
t
WAIT
INTERNAL MUTE
NOTES
1. INTERNAL MUTE IS INTERNAL TO CHIP.
Figure 44. Power-Up Sequence, t
WAIT
< t
INT
The ADAU1590 uses three separate supplies: AVDD (3.3 V
analog for PGA and modulator), DVDD (3.3 V digital for
control logic and clock oscillator), and PVDD (9 V to 18 V
power stage and level shifter). Separate pins are provided for
the AVDD, DVDD, and PVDD supply connections, as well as
AGND, DGND, and PGND.
In addition, the ADAU1590 incorporates a built-in undervolt-
age lockout logic on DVDD as well as PVDD. This helps detect
undervoltage operation and eliminates the need to have an external
mechanism to sense the supplies.
The ADAU1590 monitors the DVDD and PVDD supply voltages
and prevents the power stage from turning on if either of the
supplies are not present or are below the operating threshold.
Therefore, if DVDD is missing or below the operating thresh-
old, for example, the power stage does not turn on, even if
PVDD is present, or vice versa.
Because this protection is only present on DVDD and PVDD
and not on AVDD, shorting both AVDD and DVDD externally
or generating AVDD and DVDD from one power source is
recommended. This ensures that both AVDD and DVDD
supplies are tracking each other and avoids the need to monitor
the sequence with respect to PVDD. This also ensures minimal
pop and click during power-up.
When using separate AVDD and DVDD supplies, ensure that
both supplies are stable before unmuting or turning on the
power stage.
Similarly, during shutdown, pulling MUTE to logic low before
pulling STDN down is recommended. However, where a fault
event occurs, the power stage shuts down to protect the part. In
this case, depending on the signal level, there is some pop at the
speaker.
相關(guān)PDF資料
PDF描述
ADAU1590ASVZ-RL Class-D Audio Power Amplifier
ADAU1590ASVZRL7 Class-D Audio Power Amplifier
ADAU1592 Class-D Audio Power Amplifier
ADAU1592ACPZ Class-D Audio Power Amplifier
ADAU1592ACPZ-RL Class-D Audio Power Amplifier
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADAU1590ASVZ-RL 制造商:AD 制造商全稱:Analog Devices 功能描述:Class-D Audio Power Amplifier
ADAU1590ASVZRL7 制造商:AD 制造商全稱:Analog Devices 功能描述:Class-D Audio Power Amplifier
ADAU1592 制造商:AD 制造商全稱:Analog Devices 功能描述:Class-D Audio Power Amplifier
ADAU1592ACPZ 功能描述:IC AMP AUDIO PWR 24W 48LFCSP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:DirectDrive® 類型:D 類 輸出類型:1-通道(單聲道),帶立體聲耳機(jī) 在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量:930mW x 1 @ 8 歐姆; 40mW x 2 @ 16 歐姆 電源電壓:2.7 V ~ 5.5 V 特點(diǎn):消除爆音,差分輸入,I²C,靜音,關(guān)閉,音量控制 安裝類型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP(2.09x2.09) 封裝/外殼:25-WFBGA,WLCSP 包裝:帶卷 (TR) 其它名稱:MAX97000EWA+T-ND
ADAU1592ACPZ-RL 功能描述:IC AMP AUDIO PWR 24W 48LFCSP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:DirectDrive® 類型:D 類 輸出類型:1-通道(單聲道),帶立體聲耳機(jī) 在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量:930mW x 1 @ 8 歐姆; 40mW x 2 @ 16 歐姆 電源電壓:2.7 V ~ 5.5 V 特點(diǎn):消除爆音,差分輸入,I²C,靜音,關(guān)閉,音量控制 安裝類型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP(2.09x2.09) 封裝/外殼:25-WFBGA,WLCSP 包裝:帶卷 (TR) 其它名稱:MAX97000EWA+T-ND
主站蜘蛛池模板: 儋州市| 奉新县| 宝鸡市| 怀来县| 平舆县| 博乐市| 海兴县| 齐齐哈尔市| 乡城县| 昆明市| 西宁市| 田东县| 岳池县| 宜黄县| 桃园市| 开江县| 容城县| 崇州市| 大庆市| 马关县| 崇明县| 社会| 陆河县| 博客| 蛟河市| 岳阳县| 洛隆县| 涞源县| 深州市| 塔河县| 临桂县| 雷山县| 甘泉县| 枣强县| 八宿县| 崇仁县| 泽州县| 民勤县| 聂荣县| 汶上县| 馆陶县|