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參數(shù)資料
| 型號(hào)： | ST70134A |
| 英文描述： | ASCOT (TM) INTEGRATED ADSL CMOS ANALOG FRONT-END CIRCUIT |
| 中文描述： | 阿斯科特（TM）集成寬頻CMOS模擬前端電路 |
| 文件頁(yè)數(shù)： | 9/22頁(yè) |
| 文件大小： | 154K |
| 代理商： | ST70134A |
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ST70134A
9/22
Figure 5 :
HC Filter Mask for RX
Note: The total RX path (including ADC) group delay distortion is 16
μ
s (i.e. = 15
μ
s + 1
μ
s of ADC)
Linearity of RX
Linearity of the RX analog path is defined by the IM3 product of two sinusoidal signals with frequencies f1
and f2 and each with 0.5Vpd amplitude (total
≤
1Vpd) at the output of the RX - AGC amplifier (i.e: before
the ADC) for the case of minimal AGC setting.
Table 7 lists the RX path intermodulation distortion (as S/IM3 ratio) in downstream and upstream band-
width.
Table 7 :
Linearity of RX
Power Supply Rejection
The noise on the power supplies for the RX path must be lower than the following: <50mVrms in band
white noise for any AVDD.
In this case, PSR (power supply rejection) of ST70134 RX path is lower than -43dB.
f1 (0.5Vpd)
f2 (0.5Vpd)
300kHz
200kHz
500kHz
400kHz
700kHz
600kHz
S/IM3
(AGC = 0dB)
59.5dB @ 100kHz
53.5dB @ 400kHz
43.5dB @ 700kHz
42.5dB @ 800kHz
59.5dB @ 300kHz
48.0dB @ 600kHz
48.0dB @ 500kHz
42.5dB @ 800kHz
Table 8 :
RX Filter to A/D Interface
RX filter to A/D maximal level:
1Vpd = full scale of A/D
Table 9 :
A/D Converters
Numbers of bits:
12bits
Minimum resolution of the A/D converter
11bits
Linearity error of the A/D converter
<1LSB (out of 12bits)
Full scale input range:
1 Vpdif ±5%
Sampling rate:
8.832MHz (or 4.416MHz in OSR = 2 mode)
Maximum attenuation at 1.1MHz:
<0.5dB without in-band ripple
Maximum group delay:
<3
μ
s
Maximum group delay distortion:
<1
μ
s
5dB 36dB 50dB
±1dB
0dB
30
1104 2208 7728 16
560
kHz
Amplitude
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST70134-ST70135A | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:ASCOT ADSL MODEM CHIP SET FOR CPE |
| ST70134TR | 功能描述:電信線路管理 IC ADSL DMT Transceiver RoHS:否 制造商:STMicroelectronics 產(chǎn)品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| ST70135 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:ASCOTTM DMT TRANSCEIVER |
| ST70135A | 制造商:STMicroelectronics 功能描述:Modem Chip Single 144-Pin PQFP |
| ST70136 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:CPE ADSL ANALOG FRONT END |
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