參數(shù)資料
型號(hào): AFE1124
英文描述: LJT 12C 8#20 4#16 SKT WALL REC
中文描述: HDSL / MDSL模擬前端
文件頁(yè)數(shù): 5/11頁(yè)
文件大小: 160K
代理商: AFE1124
5
AFE1124
TYPICAL PERFORMANCE CURVES
At Output of HDSL Pulse Transformer
The curves shown below are measured at the line output of the HDSL transformer. Typical at 25
°
C, AV
DD
+ = +5V, DV
DD
+ = +3.3V, f
TX
= 1168kHz, unless otherwise specified.
CURVE 1. Upper Bound of Power Spectral Density Measured at Output of HDSL Transformer.
1K
–20
–40
–60
–80
–100
–120
10K
100K
POWER SPECTRAL DENSITY LIMIT
P
Frequency (Hz)
1M
10M
–38dBm/Hz for T1
–40dBm/Hz for E1
196kHz
292kHz
–80dB/decade
T1
–120dBm/Hz
for E1
–118dBm/Hz
for T1
E1
CURVE 3. Input Impedance of rxLINE and rxHYB.
0.4T
B = 1.07
C = 1.00
D = 0.93
0.4T
–0.6T
–1.2T
A = 0.01
E = 0.03
G = –0.16
14T
H = –0.05
50T
F = –0.01
A = 0.01
F = –0.01
0.5T
1.25T
CURVE 2. Transmitted Pulse Template Measured at HDSL Transformer Output.
100
200
150
100
50
0
300
500
INPUT IMPEDANCE vs BIT RATE
I
)
Bit Rate (kbps)
700
900
1300
1100
T1 = 784kbps,
32k
E1 = 1168kbps,
21k
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