參數(shù)資料
型號: AK2548
廠商: Asahi Kasei Microsystems Co.,Ltd
英文描述: 7 channel E1 Transceiver
中文描述: 7頻道E1收發(fā)器
文件頁數(shù): 10/30頁
文件大?。?/td> 158K
代理商: AK2548
ASAHI K ASEI [AK2548]
C0028-E-00 1999/9
10
RECEIVER
Receiver characteristics are guaranteed on the conditions as shown below.
VDD=3.3V±5%, VSS, GND=0V,Ta=-40~85oC,
MCLK frequency: 2.048MHz±100ppm, 32.768MHz±100ppm.
Bipolar input frequency:2.048MHz±50ppm(reference input level: 2.37V
0p
±10%@75
system,
3V
0p
±10%@120
system)
Parameter
Symbol
Min
Typ
Max
Units
Condition
Input Impedance
5
k
Sensitivity
-6
dB
Note1
Loss of Signal Threshold 75
120
0.28
0.35
0.4
0.5
0.55
0.7
V
V
Note2
Allowable Consecutive Zeros before LOS
170
175
180
bits
S/X tolerance
12
dB
Note3
Generated J itter
16
nspp Note4
Low pulse density immunity
1/16
Mark
J itter Tolerance
ITU-T G.823
Note1: Relative value to the reference level. Compare at 1.024MHz with All mark pattern.
Note2: Level at the line side of transformer. Loss of signal is logical OR between an analog loss of signal
monitors input level and a digital loss of signal check recovered data stream.
Note3: PN15 and AMI 1/4 Mark pattern input. Noise frequency is 1MHz.
Note4: PN15 pattern input.
Jitter Tolerance(G.823)
20Hz
2.4kHz 18kHz 100kHz
1.
2
×10
-5
Hz
36.9
1.5
0.2
J itter Frequency
J
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