- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄381262 > APA2030 (Anpec Electronics Corporation) LJT 8C 8#16 SKT RECP PDF資料下載
參數(shù)資料
| 型號： | APA2030 |
| 廠商： | Anpec Electronics Corporation |
| 英文描述： | LJT 8C 8#16 SKT RECP |
| 中文描述： | 立體聲2.6W音頻放大器（增益控制） |
| 文件頁數(shù)： | 18/27頁 |
| 文件大小： | 746K |
| 代理商： | APA2030 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁當前第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁
Copyright
ANPEC Electronics Corp.
Rev. A.2 - Apr., 2004
APA2030/2031
www.anpec.com.tw
18
Application Descriptions
BTL Operation
The APA2030/1 has two pairs of operational amplifi-
ers internally, allowed for different amplifier
configurations.
Figure 1: APA2030 internal configuration (each
channel)
The OP1 and OP2 are all differential drive
configuration, The differential drive configuration dou-
bling the voltage swing on the load compare to the
single-ending configuration, the differential gain for
each channel is 2
X
(Gain of SE mode).
By driving the load differentially through outputs OUT+
and OUT-, an amplifier configuration commonly re-
ferred to as bridged mode is established. BTL mode
operation is different from the classical single-ended
SE amplifier configuration where one side of its load
is connected to ground.
A BTL amplifier design has a few distinct advantages
over the SE configuration, as it provides differential
drive to the load, thus doubling the output swing for a
specified supply voltage. Four times the output power
is possible as compared to a SE amplifier under the
same conditions. A BTL configuration, such as the
one used in APA2030/1, also creates a second ad-
vantage over SE amplifiers. Since the differential
outputs, ROUT+, ROUT-, LOUT+, and LOUT-, are bi-
ased at half-supply, no need DC voltage exists across
the load. This eliminates the need for an output cou-
pling capacitor which is required in a single supply,
SE configuration.
Single-Ended Operation (for APA2030 only)
Consider the single-supply SE configuration shown
Application Circuit. A coupling capacitor is required
to block the DC offset voltage from reaching the load.
These capacitors can be quite large (approximately
33
μ
F to 1000
μ
F) so they tend to be expensive, oc-
cupy valuable PCB area, and have the additional
drawback of limiting low-frequency performance of
the system (refer to the Output Coupling Capacitor).
The rules described should be following relationship:
×
125k
Cbypass
1
≤
i
i
C
R
1
<<
C
L
C
R
1
(1)
Output SE/BTL Operation (for APA2030 only)
The ability of the APA2030 to easily switch between
BTL and SE modes is one of its most important costs
saving features. This feature eliminates the require-
ment for an additional headphone amplifier in appli-
cations where internal stereo speakers are driven in
BTL mode but external headphone or speakers must
be accommodated.
Internal to the APA2030, two separate amplifiers drive
OUT+ and OUT- (see Figure 1). The SE/BTL input
controls the operation of the follower amplifier that
drives LOUT- and ROUT-.
When SE/BTL is held low, the OP2 is actived
and the APA2030 is in the BTL mode.
When SE/BTL is held high, the OP2 is in a high
output impedance state, which configures the
APA2030 as SE driver from OUT+. I
is re-
duced by approximately one-half in SE mode.
Control of the SE/BTL input can be a logic-level TTL
source or a resistor divider network or the stereo head-
phone jack with switch pin as shown in Application
Circuit.
V
bias
OP1
OP2
INPUT-
-
+
-
+
INPUT+
OUT+
OUT-
DIF F_AM P _CONF IG
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| APA2030RI-TR | Circular Connector; No. of Contacts:8; Series:MS27656; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:17; Circular Contact Gender:Socket; Circular Shell Style:Wall Mount Receptacle RoHS Compliant: No |
| APA2030RI-TRL | Circular Connector; No. of Contacts:8; Series:MS27656; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:17; Circular Contact Gender:Socket; Circular Shell Style:Wall Mount Receptacle RoHS Compliant: No |
| APA2030RI-TU | Circular Connector; No. of Contacts:8; Series:MS27656; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:17; Circular Contact Gender:Socket; Circular Shell Style:Wall Mount Receptacle RoHS Compliant: No |
| APA2030RI-TUL | Circular Connector; No. of Contacts:23; Series:MS27656; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:17; Circular Contact Gender:Socket; Circular Shell Style:Wall Mount Receptacle RoHS Compliant: No |
| APA2030RI-TY | LJT 23C 21#20 2#16 SKT RECP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| APA2030_13 | 制造商:ANPEC 制造商全稱:Anpec Electronics Coropration 功能描述:Stereo 2.6W Audio Amplifier (With Gain Control) |
| APA2030QBI-TRG | 制造商:ANPEC 制造商全稱:Anpec Electronics Coropration 功能描述:Stereo 2.6W Audio Amplifier (With Gain Control) |
| APA2030RI-TR | 制造商:ANPEC 制造商全稱:Anpec Electronics Coropration 功能描述:Stereo 2.6W Audio Amplifier(With Gain Control) |
| APA2030RI-TRG | 制造商:ANPEC 制造商全稱:Anpec Electronics Coropration 功能描述:Stereo 2.6W Audio Amplifier (With Gain Control) |
| APA2030RI-TRL | 制造商:ANPEC 制造商全稱:Anpec Electronics Coropration 功能描述:Stereo 2.6W Audio Amplifier(With Gain Control) |
發(fā)布緊急采購，3分鐘左右您將得到回復。