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參數(shù)資料
| 型號： | ISL54004IRTZ |
| 廠商： | Intersil |
| 文件頁數(shù)： | 12/13頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP AUDIO PWR 1.23W AB 20TQFN |
| 標準包裝： | 75 |
| 類型： | AB 類 |
| 輸出類型： | 1-通道（單聲道），帶立體聲耳機 |
| 在某負載時最大輸出功率 x 通道數(shù)量： | 1.23W x 1 @ 8 歐姆; 215mW x 2 @ 16 歐姆 |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 特點： | 消除爆音，關(guān)機，熱保護 |
| 安裝類型： | 表面貼裝 |
| 供應(yīng)商設(shè)備封裝： | 20-TQFN（4x4） |
| 封裝/外殼： | 20-WFQFN 裸露焊盤 |
| 包裝： | 管件 |
8
FN6513.2
October 30, 2007
Low Power Shutdown
With a logic “1” at the SD control pin the device enters the
low power shutdown state. When in shutdown the BTL and
headphone amplifiers go into an high impedance state and
IDD supply current is reduced to 26A (typ).
In shutdown mode before the amplifiers enter the high
impedance/low current drive state, the bias voltage of VDD/2
remains connected at the output of the amplifiers through a
100k
Ω resistor.
This resistor is not present during active operation of the
drivers but gets switched in when the SD pin goes high. It
gets removed when the SD pin goes low.
Leaving the DC bias voltage connected through a 100k
Ω
resistor while going into and out of shutdown reduces the
transient at the speakers to a small level preventing clicking
or popping in the speakers.
Note: When the SD pin is High it overrides all other logic
pins.
QFN Die Attach Paddle Considerations
The QFN package features an exposed thermal pad on its
underside. This pad lowers the package’s thermal resistance
by providing a direct heat conduction path from the die to the
PCB. Connect the exposed thermal pad to GND by using a
large copper pad and multiple vias to the GND plane. The
vias should be plugged and tented with plating and solder
mask to ensure good thermal conductivity.
Best thermal performance is achieved with the largest
practical copper ground plane area.
PCB Layout Considerations and Power
Supply Bypassing
To maintain the highest load dissipation and widest output
voltage swing the power supply PCB traces and the traces
that connect the output of the drivers to the speaker loads
should be made as wide as possible to minimize losses due
to parasitic trace resistance.
Proper supply bypassing is necessary for high power supply
rejection and low noise performance. A filter network
consisting of a 10F capacitor in parallel with a 0.1F
capacitor is recommended at the voltage regulator that is
providing the power to the ISL54004 IC.
Local bypass capacitors of 0.1F should be put at each VDD
pin of the ISL54004 device. They should be located as close
as possible to the pin, keeping the length of leads and traces
as short as possible.
A 1F capacitor from the REF pin (pin 10) to GND is needed
for optimum PSRR and internal bias voltage stability.
Typical Performance Curves TA = +25°C, Unless Otherwise Specified
FIGURE 1. THD+N vs FREQUENCY
FIGURE 2. THD+N vs FREQUENCY
THD+N
(
%
)
FREQUENCY (Hz)
0.1
1.0
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
20
20k
50
100
200
500
1k
2k
5k
10k
VDD = 5V
BTL
RL = 8Ω
PO = 800mW
THD+
N
(%)
FREQUENCY (Hz)
0.1
1.0
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
20
20k
50
100
200
500
1k
2k
5k
10k
VDD = 3.6V
BTL
RL = 8Ω
PO = 200mW
ISL54004
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISL54004IRTZ-T | 功能描述:IC AMP AUDIO PWR 1.23W AB 20TQFN RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝: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 在某負載時最大輸出功率 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: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 |
| ISL54005 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Integrated Audio Amplifier Systems |
| ISL54005IRTZ | 功能描述:IC AMP AUDIO PWR 1.23W AB 20TQFN RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝: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 在某負載時最大輸出功率 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: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 |
| ISL54005IRTZ-T | 功能描述:IC AMP AUDIO PWR 1.23W AB 20TQFN RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝: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 在某負載時最大輸出功率 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: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 |
| ISL54006 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Integrated Audio Amplifier Systems |
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