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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 |
| 文件頁數(shù)： | 11/22頁 |
| 文件大?。?/td> | 154K |
| 代理商： | ST70134A |
ST70134A
11/22
Figure 6 :
SC Filter Mask for TX
Linearity in TX
Linearity of the TX 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 pre-driver for the case of a total
AGC = 0dB.
Table 13 :
Linearity in TX
TX Idle Channel Noise
The idle channel noise specifications correspond with 11bit resolution of the complete TX-path. TX idle
channel output noise on TXP, TXN.
Table 14 :
TX idle channel noise
Power Supply Rejection
The noise on the power supplies for the TX-path must be lower than the following:
< 50mVrms in-band white noise for AVDD.
< 15mVrms in-band white noise for Pre-driver AVDD.
VCXO
A voltage controlled crystal oscillator driver is integrated in ST70134. The nominal frequency is
35.328MHz. The quartz crystal is connected between the pins XTALI and XTALO. The principle of the
VCXO control is shown in Figure 7.
Table 12 :
D/A Converter (A current steering architecture is used)
Description
Value / Unit
Numbers of bits:
Minimum resolution of the D/A converters
Linearity error of the A/D converter
Full scale input range:
Sampling rate:
Maximum group delay:
Maximum group delay distortion:
12bits
11bits
<1LSB (out of 12bits)
1 Vpdif ±5%
8.832MHz (or 4.416MHz in compatible mode)
<3
μ
s
<1
μ
s
f1 (0.5Vpd)
f2 (0.5Vpd)
S/IM3 (AGC = 0 dB)
80kHz
70kHz
59.5dB (@ 60KHz, 90KHz)
For max AGC setting (0dB)
In-band noise
Out-of-band noise
1.6
μ
VHz
-1/2
150nVHz
-1/2
@ 34.5kHz -138kHz
@ 250kHz -1.104MHz
For min AGC setting (=-15dB)
In-band noise
500nVHz
-1/2
@ 34kHz -138kHz
Amplitude
0dB
±1dB
20dB
30
138 250
kHz
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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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