參數(shù)資料
型號(hào): AS1704-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
文件頁數(shù): 7/13頁
文件大?。?/td> 187K
代理商: AS1704-T
www.austriamicrosystems.com
Revision 1.01
7 - 13
AS1702, AS1703, AS1704, AS1705
Data Sheet
austria
micro
systems
BTL Amplifier
7.1 BTL Amplifier
All devices are designed to drive loads differentially in a bridge-tied load (BTL) configuration.
Figure 4. Bridge Tied Load Configuration
The BTL configuration doubles the output voltage (illustrated in Figure 4) compared to a single-ended amplifier under
similar conditions. Thus, the differential gain of the device (A
VD
) is twice the closed-loop gain of the input amplifier. The
effective gain is given by:
Substituting 2 x V
OUT(P-P)
for V
OUT(P-P)
into (EQ 3) and (EQ 4) yields four times the output power due to doubling of
the output voltage:
Since the BTL outputs are biased at mid-supply, there is no net DC voltage across the load. This eliminates the need
for the large, expensive, performance degrading DC-blocking capacitors required by single-ended amplifiers.
7.2 Power Dissipation and Heat Sinking
Normally, the devices dissipate a significant amount of power. The maximum power dissipation is given in Table 1 as
Continuous Power Dissipation, or it can be calculated by:
where T
J(MAX)
is +150°C, T
AMB
(see Table 1) is the ambient temperature, and
Θ
JA
is the reciprocal of the derating fac-
tor in °C/W as specified in Table 1. For example,
Θ
JA
of the TQFN package is +59.2°C/W.
The increased power delivered by a BTL configuration results in an increase in internal power dissipation versus a sin-
gle-ended configuration. The maximum internal power dissipation for a given V
CC
and load is given by:
+1
-1
V
OUT(P-P)
V
OUT(P-P)
2 x V
OUT(P-P)
A
VD
= 2 x
R
IN
(EQ 2)
R
F
V
RMS
=
2 2
(EQ 3)
V
OUT(P-P)
P
OUT
=
R
L
(EQ 4)
V
RMS
2
P
DISSPKF(MAX)
=
Θ
JA
(EQ 5)
T
J(MAX)
-T
A
P
DISSPKF(MAX)
=
π
2
R
L
(EQ 6)
2V
CC
2
相關(guān)PDF資料
PDF描述
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
AS1713-BTDT 10MHz 10V/μs, Rail-to-Rail I/O
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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
AS1704V-T 功能描述:IC AMP AUD 1.8W 3DB 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
AS1705 功能描述:IC AMP AUDIO MONO 1.8W 10-MSOP 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
AS1705-T 功能描述:IC AMP AUD 1.8W 6DB 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
AS1705V 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