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參數(shù)資料
| 型號： | AFE1224E |
| 元件分類： | 圓形連接器 |
| 英文描述： | Circular Connector; No. of Contacts:18; Series:MS27467; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:15; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:15-18 RoHS Compliant: No |
| 中文描述： | 2Mbps的，單對模擬前端 |
| 文件頁數(shù)： | 9/11頁 |
| 文件大?。?/td> | 137K |
| 代理商： | AFE1224E |
9
AFE1224
For the transmit channel, the pulse shape and the power
spectral density scale directly with the clock rate. The power
spectral density shown in Curve 1 and the pulse template
shown in Curve 2 are measured at the output of the trans-
former. The transformer and the RC circuit on the output
provide some smoothing for the output transmission. At
lower bit rates, the amount of smoothing will be less and
more output filtering may be needed.
rxHYB AND rxLINE INPUT ANTI-ALIASING FILTERS
An external input anti-aliasing filter is needed on the hybrid
and line inputs as shown in the basic connection diagram
(Figure 6). The –3dB frequency of the input anti-aliasing
filter for the rxLINE and rxHYB differential inputs should
be approximately 2MHz for single pair T1 and E1 symbol
rates. Suggested values for the filter are 375
for each of the
two input resistors and 100pF for the capacitor. Together the
two 375
resistors and the 100pF capacitor result in a 3dB
frequency of just over 2MHz. The 375
input resistors will
result in minimal voltage divider loss with the input imped-
ance of the AFE1224. This circuit applies at rates of 1Mbps
to 2Mbps. For slower rates, the anti-aliasing filters will give
best performance with 3dB frequency approximately equal
to the bit rate. For instance, a 3dB frequency of 320kHz may
be used for a single line bit rate of 320k bits per second.
FIGURE 6. Basic Connection Diagram.
REF
P
V
CM
REF
N
DV
DD
DV
DD
AV
DD
AFE1224
AV
DD
AV
DD
rxbaudCLK
rx48xCLK
Data Out
txbaudCLK
tx48xCLK
Data In
HDSL DSP
GNDA
GNDA
GNDA
txLINE+
txLINE–
rxHYB+
rxHYB–
rxLINE–
rxLINE+
4.7nF
–
–
+
+
Compromise
Hybrid
Input Anti-Alias Filter
fc
Bit Rate
4.7nF
5V Analog
0.1
μ
F
0.1
μ
F
0.1
μ
F
0.1
μ
F
0.1
μ
F
1 - 10
μ
F
375
100pF
100pF
375
375
13
13
375
5V to 3.3V Digital
1:2 Transformer
Tip
Ring
0.1
μ
F
0.1
μ
F
0.1
μ
F
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AFE1230 | G.SHDSL ANALOG FRONT-END |
| AFE1230E | G.SHDSL ANALOG FRONT-END |
| AFE1231K | G.SHDSL ANALOG FRONT-END |
| AFE1231KG4 | G.SHDSL ANALOG FRONT-END |
| AFE2124 | Dual HDSL/SDSL ANALOG FRONT END |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AFE1224E/1K | 功能描述:IC HDSL ANALOG FRONT END 28SSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模擬前端 (AFE) 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 位數(shù):- 通道數(shù):2 功率（瓦特）:- 電壓 - 電源，模擬:3 V ~ 3.6 V 電壓 - 電源，數(shù)字:3 V ~ 3.6 V 封裝/外殼:32-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:32-QFN（5x5） 包裝:帶卷 (TR) |
| AFE1224E-1 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| AFE1224E-2 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| AFE1224E-2/1K | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| AFE1230 | 制造商:BB 制造商全稱:BB 功能描述:G.SHDSL ANALOG FRONT-END |
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