參數(shù)資料
型號(hào)： TA2123AFG
元件分類： 音頻／視頻放大
英文描述： 0.006 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48
封裝： 7 X 7 MM, 0.50 MM PITCH, PLASTIC, LQFP-48
文件頁(yè)數(shù)： 2/20頁(yè)
文件大?。?/td> 430K
代理商： TA2123AFG
TA2123AFG
2004-12-01
10
(b) AGC circuit
The AGC circuit of bass boost function is realized by the variable impedance circuit. The AGC DET
circuit detects the low frequency level of center amplifier. When this level becomes high, the variable
impedance circuit operates, and this circuit attenuates the input level of center amplifier.
The AGC DET circuit is the current input, so that the output voltage of ADD amplifier is changed into
the current ingredient by resistor Rb and capacitor C5 which are shown in Fig.3. And it is smoothed
and detected by DET circuit (pin 36). And the direct current should not be applied to the AGC IN
circuit, because, as for the circuit, the sensitivity setup is high.
Moreover, the AGC signal level is decreased in case that the resistor R5 is connected with the
capacitor C5 in series. And the AGC point can be changed. But the center amplifier is clipped in the
low frequency in case that the resistor R5 is larger.
(c) Bass boost
The signal flow of bass boost function is as follows, refer to Fig.4.
LPF (internal resistors 2R1 and external capacitor C1)
→ATT (variable impedance circuit)
→HPF (BST amplifier)
→BPF (LPF: internal resistor R4 and external capacitor C3, HPF: external capacitor C4 and internal
resistor R5)
→Center amplifier
The center amplifier signal becomes the reverse phase, because the phase of audio frequency range
is reversed with two LPFs.
Fig.4
Block diagram of bass boost
20k
2R1
ATT
C1
C2
R3
BST
R2 = 100k
R4 = 20k
+
C3
C4
R5
20
k
PWA
PWC
R
L
27
28
31
34
33
32
20
21
A2
G3(ω)
BPF
G2(ω)
HPF
A1
G1(ω)
LPF
相關(guān)PDF資料
PDF描述
TA2131FLG 0.008 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC24
TA2131FNG 0.008 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24
TA2131FN 0.008 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO24
TA2132BFG AM/FM, AUDIO SINGLE CHIP RECEIVER, PDSO16
TA2132BPG AM/FM, AUDIO SINGLE CHIP RECEIVER, PDIP16
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TA2125 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:Power Driver IC for CD Player
TA2125AF 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:Power Driver IC for CD Player
TA2125AF_03 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:Power Driver IC for CD Player
TA-2130 制造商:GC Electronics 功能描述:
TA2131FL 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:LOW CURRENT CONSUMPTION GEADPHONE AMPLIFIER FOR PORTABLE MD PLAYER (WITH BASS BOOST FUNCTION)
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*