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| 型號(hào)： | AS1703-T |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1.6W Single-Channel Audio Power Amplifiers |
| 中文描述： | 1.6 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO10 |
| 封裝： | 3 X 3 MM, 0.80 MM HEIGHT, MSOP-10 |
| 文件頁(yè)數(shù)： | 8/13頁(yè) |
| 文件大?。?/td> | 187K |
| 代理商： | AS1703-T |
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Revision 1.01
8 - 13
AS1702, AS1703, AS1704, AS1705
Data Sheet
austria
micro
systems
Fixed Differential Gain (AS1703, AS1704, and AS1705)
If the internal power dissipation exceeds the maximum allowed for a given package, power dissipation should be
reduced by increasing the ground plane heat-sinking capabilities and increasing the size of the device traces (see Sec-
tion 7.5 Layout and Grounding Considerations on page 9). Additionally, reducing V
CC
, increasing load impedance, and
decreasing ambient temperature can reduce device power dissipation.
The integrated thermal-overload protection circuitry limits the total device power dissipation. Note that if the junction
temperature is
≥
+145°C, the integrated thermal-overload protection circuitry will disable the amplifier output stage. If
the junction temperature is reduced by 9°, the amplifiers will be re-enabled.
Note:
A pulsing output under continuous thermal overload results as the device heats and cools.
7.3 Fixed Differential Gain (AS1703
,
AS1704, and AS1705)
The AS1703, AS1704, and AS1705 contain different internally-fixed gains (see Ordering Information on page 12). A
fixed gain facilitates simplified designs, decreased footprint size, and elimination of external gain-setting resistors.
The fixed gain values are achieved using resistors R
1
and R
2
(see Figure 3 on page 6).
7.4 Adjustable Differential Gain (AS1702)
7.4.1 Gain-Setting Resistors
The AS1702 uses external feedback resistors, R
F
and R
IN
(Figure 5), to set the gain of the device as:
where A
V
is the desired voltage gain. For example, R
IN
= 10k
, R
F
= 20k
yields a gain of 2V/V, or 6dB.
Note:
R
F
can be either fixed or variable, allowing the gain to be controlled by software (using a AS150x digital poten-
tiometer. For more information on the AS1500 family of digital potentiometers, refer to the latest version of the
AS150x data sheet
,
http://www.austriamicrosystems.com.)
Figure 5. Setting the AS1702
Gain
A
V
=
R
IN
(EQ 7)
R
F
AS1702
+
–
OUT+
OUT-
R
F
20k
R
F
20k
Bias
Generator
Inverting Differential
Input
Non-Inverting Differential
Input
C
IN
*
10μF
C
IN
*
10μF
R
IN
10k
R
IN
10k
* Optional
C
BIAS
0.1μF
IN+
IN-
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AS1704-T | 1.6W Single-Channel Audio Power Amplifiers |
| AS1705 | 1.6W Single-Channel Audio Power Amplifiers |
| AS1705-T | ECONOLINE: REC3-S_DR/H1 - 3W DIP Package- 1kVDC Isolation- Regulated Output- UL94V-0 Package Material- Continuous Short Circiut Protection- Internal SMD design- 100% Burned In- Efficiency to 75% |
| AS1710A-ASCT | Single, 100mA, 10MHz, 10V/us; Package Type: SC70-6; Shutdown: Yes |
| AS1710B-ASCT | Single, 100mA, 10MHz, 10V/us; Package Type: SC70-5 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS1703V | 功能描述:IC AMP AUDIO MONO 1.8W 10-DFN RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:- 標(biāo)準(zhǔn)包裝:2,000 系列:- 類型:AB 類 輸出類型:2 通道（立體聲） 在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量:- 電源電壓:4 V ~ 18 V 特點(diǎn):- 安裝類型:通孔 供應(yīng)商設(shè)備封裝:8-DIP 封裝/外殼:8-DIP（0.300"，7.62mm） 包裝:管件 |
| AS1703V-T | 功能描述:IC AMP AUD 1.8W 0DB GAIN 10-DFN 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 |
| AS1704 | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| AS1704-T | 功能描述:IC AMP AUD 1.8W 3DB GAIN 10-MSOP 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 |
| AS1704V | 功能描述:IC AMP AUDIO MONO 1.8W 10-DFN RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:- 標(biāo)準(zhǔn)包裝:2,000 系列:- 類型:AB 類 輸出類型:2 通道（立體聲） 在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量:- 電源電壓:4 V ~ 18 V 特點(diǎn):- 安裝類型:通孔 供應(yīng)商設(shè)備封裝:8-DIP 封裝/外殼:8-DIP（0.300"，7.62mm） 包裝:管件 |
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