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参数资料
| 型号： | TA7376P |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 0.4 W, 2 CHANNEL, AUDIO AMPLIFIER, PSIP9 |
| 封装： | SIP-9 |
| 文件页数： | 2/8页 |
| 文件大小： | 243K |
| 代理商： | TA7376P |
TA7376P
2002-10-30
2
Application Note
1. Input stage
The input stage of power amplifier (equivalent circuit) is comprised of a
PNP differential pair (Q2 and Q3) preceded by a PNP emitter follower (Q1)
which allows DC referencing of the source signal to ground.
This eliminates the need for an input coupling condenser.
However, in case the brush noise of volume becomes a problem, provide
serially a coupling condenser to the input side.
2. Adjustment of voltage gain
The voltage gain is fixed at GV≒40dB by the resistors (R1 and R2) in IC,
however, its reduction is possible through adding Rf as shown in Fig.2.
In this case, the voltage gain is obtained by the following equation.
f
R
1
R
f
R
2
R
1
R
og
20
V
G
+
l
≒
It is recommended to use this IC with the voltage gain of
GV≒30dB or over.
3. Ripple rejection ratio (RR)
If the TA7376P does not have the ripple filter
condenser (CRIP), the ripple rejection ratio is as follow.
RR = -25dB (typ.)
(CNF = 22F, fr = 100Hz)
RR = -34dB (typ.)
(CNF = 100F, fr = 100Hz)
If the ripple filter condenser is connected to the pin(7), the ripple rejection
ratio is improved as following the DATA (RR-fr).
4. Pop sound
It must be connected the condenser (CRIP) from pin(7) to GND, if the "Pop"
sound is harshness.
In this case, the value is 10F something.
2 / 8
1 / 9
51 k
510
Fig.2
Vin
R1
R2
Rf
4
1 / 9
NF
GND
Q1
Q2 Q3
Q4
Q5
R2
R1
VCC
Vin
5
30
k
Fig.1
2 / 8
VCC
1 / 9
RF
4
7
C
RIP
2 / 8
C
NF
Fig.3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TA7378 | 制造商:TOSHIBA 制造商全称:Toshiba Semiconductor 功能描述:Radio ic |
| TA-74.250MBD-T | 功能描述:标准时钟振荡器 74.250MHz 3.3V 25 ppm -40C to 85C RoHS:否 制造商:AVX 产品:Standard Clock Oscillators 封装 / 箱体:7 mm x 5 mm 频率:75 MHz 频率稳定性:50 PPM 电源电压:2.5 V 负载电容: 端接类型:SMD/SMT 最小工作温度:0 C 最大工作温度:+ 70 C 输出格式:LVDS 尺寸: 封装:Reel 系列: |
| TA-74.250MBE-T | 制造商:TXC Corporation 功能描述:OSC MEMS 74.250 MHZ 3.3V SMD |
| TA-74.250MCD-T | 功能描述:标准时钟振荡器 74.250MHz 2.5V 25ppm -40C to 85C RoHS:否 制造商:AVX 产品:Standard Clock Oscillators 封装 / 箱体:7 mm x 5 mm 频率:75 MHz 频率稳定性:50 PPM 电源电压:2.5 V 负载电容: 端接类型:SMD/SMT 最小工作温度:0 C 最大工作温度:+ 70 C 输出格式:LVDS 尺寸: 封装:Reel 系列: |
| TA-74.250MCE-T | 制造商:TXC Corporation 功能描述:OSC MEMS 74.250 MHZ 2.5V SMD |
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