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AFE1205 PDF预览

AFE1205

更新时间: 2024-10-27 22:05:27
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页数 文件大小 规格书
10页 199K
描述
2Mbps, Single Pair HDSL ANALOG FRONT END

AFE1205 数据手册

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TYPICAL PERFORMANCE CURVES  
At Output of Pulse Transformer  
Typical at 25°C, AVDD = +5V, and DVDD = +3.3V, unless otherwise specified.  
AVERAGE POWER SPECTRAL DENSITY LIMIT  
–20  
LOWER  
LIMIT  
BREAK  
FREQUENCY  
UPPER  
LIMIT  
T1  
SPEED  
SLOPE  
–80dB/decade  
–40  
T1  
T1, Two Pair  
E1, Two Pair  
–38dBm/Hz  
–40dBm/Hz  
E1, Single Pair (E1-SP) –42.5dBm/Hz  
196kHz  
292kHz  
485kHz  
–80dB/decade –118dBm/Hz  
–80dB/decade –120dBm/Hz  
–80dB/decade –122dBm/Hz  
E1  
–60  
–80  
E1  
E1-SP  
E1-SP  
–100  
–120  
–140  
1k  
10k  
100k  
1M  
10M  
100M  
Frequency (Hz)  
CURVE 1. Upper Bound of Power Spectral Density Measured at the Transformer Output.  
0.4T 0.4T  
TWO PAIR T1 AND E1  
SINGLE PAIR E1  
NORMALIZED  
LEVELS  
NORMALIZED  
LEVELS  
LIMITS  
QUATENARY SYMBOLS (V)  
QUATENARY SYMBOLS (V)  
+3  
0.0264  
2.8248  
2.6400  
2.4552  
0.0792  
0.0264 –0.0088  
–0.4224 –0.1408  
–0.1320 –0.0440  
+1  
–1  
–3  
+3  
0.0250  
2.6750  
2.5000  
2.3250  
0.1000  
–0.0250 –0.0083  
–0.5000 –0.1667  
–1.2500 –0.0417  
+1  
–1  
–3  
0.0250  
A
B
C
D
E
F
0.01  
1.07  
1.00  
0.93  
0.03  
–0.01  
–0.16  
–0.05  
0.0088 –0.0088 –0.0264  
0.9416 –0.9416 –2.8248  
0.8800 –0.8800 –2.6400  
0.8184 –0.8184 –2.4552  
0.0264 –0.0264 –0.0792  
0.01  
1.07  
1.00  
0.93  
0.04  
–0.01  
–0.20  
–0.05  
0.0083 –0.0083  
0.8917 –0.8917 –2.6750  
0.8333 –0.8333 –2.5000  
0.7750 –0.7750 –2.3250  
0.0333 –0.0333 –0.1000  
0.0088  
0.1408  
0.0440  
0.0264  
0.4224  
0.1320  
0.0083  
0.1667  
0.0417  
0.0250  
0.5000  
0.1250  
G
H
1.25T  
–1.2T  
–0.6T 0.5T  
14T  
50T  
CURVE 2. Transmitted Pulse Template and Actual Performance as Measured at the Transformer Output.  
INPUT IMPEDANCE vs BIT RATE  
100  
Two Pair T1 = 784kbps, 45k  
Two Pair E1 = 1168kbps, 30kΩ  
Single Pair E1 = 2320kbps, 15kΩ  
75  
50  
25  
0
T1  
E1  
E1,  
Single Pair  
200  
600  
1000  
1400  
1800  
2200  
2600  
Bit Rate (kbps)  
CURVE 3. Input Impedance of rxLINE and rxHYB.  
®
5
AFE1205  

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