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| 型号： | SA575N |
| 厂商： | ON Semiconductor |
| 文件页数： | 12/16页 |
| 文件大小： | 0K |
| 描述： | IC COMPANDOR 2CHAN GAIN 20-DIP |
| 产品变化通告： | Product Obsolescence 11/Feb/2009 |
| 标准包装： | 18 |
| 类型： | 压缩扩展器 |
| 应用： | 蜂窝式无线电，混频器 |
| 安装类型： | 通孔 |
| 封装/外壳： | 20-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 20-PDIP |
| 包装： | 管件 |
SA575
http://onsemi.com
5
Expandor
The typical expandor configuration is shown in Figure 2.
The variable gain cell and the rectifier cell are in the signal
input path. The VREF is always 1/2 VCC to provide the
maximum headroom without clipping. The 0 dB ref is
100 mVRMS. The input is AC coupled through C5, and the
output is AC coupled through C3. If in a system the inputs
and outputs are AC coupled, then C3 and C5 can be
eliminated, thus requiring only one external component,
C4. The variable gain cell and rectifier cell are DC coupled
so any offset voltage between Pins 4 and 9 will cause small
offset error current in the rectifier cell. This will affect the
accuracy of the gain cell. This can be improved by using an
extra capacitor from the input to Pin 4 and eliminating the
DC connection between Pins 4 and 9.
The expandor gain expression and the attack and release
respectively.
(eq. 1)
4VIN(avg)
3.8 k
W x 100 mA
Expandor gain =
where VIN(avg) = 0.95VIN(RMS)
2
(eq. 2)
tR = tA = 10 kW x CRECT = 10 kW x C4
2.2
mF
10
mF
10
mF
VREF
DG
S
EXP IN
EXP OUT
9, 11
4, 16
5, 15
7, 13
6, 14
8
Figure 2. Typical Expandor Configuration
10k
W
3.8k
W
10k
W
C5
C4
C3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SA575NG | 功能描述:音频放大器 3-7V Precision Dual Gain Compandor RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| SA576 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Low power compandor |
| SA57608 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:One-cell Lithium-ion battery protection with over/undercharge and overcurrent protection |
| SA57608XD | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:One-cell Lithium-ion battery protection with over/undercharge and overcurrent protection |
| SA5760-SM | 制造商:Panasonic Industrial Company 功能描述:SERVICE MANUAL |
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