ak2548 AKM Semiconductor, Inc., ak2548 Datasheet - Page 10

• Manufacturer Part Number: ak2548
• Description: 7 Channel E1 Transceiver - Asahi Kasei Microsystems
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
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
3V
Input Impedance
Sensitivity
Loss of Signal Threshold
Allowable Consecutive Zeros before LOS
S/X tolerance
Generated Jitter
Low pulse density immunity
Jitter Tolerance
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
Note3: PN15 and AMI 1/4 Mark pattern input. Noise frequency is 1MHz.
Note4: PN15 pattern input.
C0028-E-00
Jitter Tolerance(G.823)
0p
±10%@120 system)
monitors input level and a digital loss of signal check recovered data stream.
36.9
1.5
0.2
Parameter
1.2×10
-5
Hz
120
75
ITU-T G.823
Symbol
Jitter Frequency
10
0.28
0.35
1/16
Min
170
-6
5
Typ
175
0.4
0.5
16
20Hz
Max
0.55
180
0.7
12
0p
±10%@75 system,
2.4kHz 18kHz 100kHz
Mark
Units
nspp Note4
bits
k
dB
dB
V
V
Note1
Note2
Note3
Condition
[AK2548]
1999/9