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參數(shù)資料
| 型號(hào)： | TP3040 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | CONNECTOR ACCESSORY |
| 中文描述： | 連接器附件 |
| 文件頁(yè)數(shù)： | 1/10頁(yè) |
| 文件大小： | 183K |
| 代理商： | TP3040 |
TL/H/6660
T
September 1994
TP3040, TP3040A PCM Monolithic Filter
General Description
The TP3040/TP3040A filter is a monolithic circuit contain-
ing both transmit and receive filters specifically designed for
PCM CODEC filtering applications in 8 kHz sampled sys-
tems.
The filter is manufactured using microCMOS technology
and switched capacitor integrators are used to simulate
classical LC ladder filters which exhibit low component sen-
sitivity.
TRANSMIT FILTER STAGE
The transmit filter is a fifth order elliptic low pass filter in
series with a fourth order Chebyshev high pass filter. It pro-
vides a flat response in the passband and rejection of sig-
nals below 200 Hz and above 3.4 kHz.
RECEIVE FILTER STAGE
The receive filter is a fifth order elliptic low pass filter de-
signed to reconstruct the voice signal from the decoded/de-
multiplexed signal which, as a result of the sampling pro-
cess, is a stair-step signal having the inherent sin x/x fre-
quency response. The receive filter approximates the func-
tion required to compensate for the degraded frequency re-
sponse and restore the flat passband response.
Features
Y
Designed for D3/D4 and CCITT applications
Y
a
5V,
b
5V power supplies
Y
Low power consumption:
45 mW (0 dBm0 into 600
X
)
30 mW (power amps disabled)
Y
Power down mode: 0.5 mW
Y
20 dB gain adjust range
Y
No external anti-aliasing components
Y
Sin x/x correction in receive filter
Y
50/60 Hz rejection in transmit filter
Y
TTL and CMOS compatible logic
Y
All inputs protected against static discharge due to
handling
Block Diagram
TL/H/6660–1
FIGURE 1
C
1995 National Semiconductor Corporation
RRD-B30M115/Printed in U. S. A.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TP3040AJ | CONNECTOR ACCESSORY |
| TP3040AN | CONNECTOR ACCESSORY |
| TP3040AV | TP3040, TP3040A PCM Monolithic Filter |
| TP3040J | TP3040, TP3040A PCM Monolithic Filter |
| TP3040N | TP3040, TP3040A PCM Monolithic Filter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TP3040AJ | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:TP3040, TP3040A PCM Monolithic Filter |
| TP3040AJ-1 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication Filter |
| TP3040AN | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:TP3040, TP3040A PCM Monolithic Filter |
| TP3040AV | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:TP3040, TP3040A PCM Monolithic Filter |
| TP3040AV-1 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecommunication Filter |
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