參數(shù)資料
型號(hào)： AK61584
廠商： Asahi Kasei Microsystems Co.,Ltd
元件分類(lèi)： 圓形連接器
英文描述： Circular Connector; No. of Contacts:55; Series:MS27484; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:16; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:16-35 RoHS Compliant: No
中文描述： 雙低功耗的T1/E1線路接口
文件頁(yè)數(shù)： 14/38頁(yè)
文件大?。?/td> 364K
代理商： AK61584
ASAHI KASEI
[AK61584]
0185-E-00
98/04
-14-
(2269 s
(194 s
244 s
219 s
(244 5)
(2488 s
1
1
0%
50%
1
2
2
V 00%
2
Nominal ulse
Note
– V orresponds o he ominal eak alue.
Figure 9. Typical Pulse Shape at DSX-1 Cross Connect Figure 10. Mask of the Pulse at 2048kbps Interface
The line driver internally matches the impedance of the
line load, providing 14 dB of return loss during the
transmission of both marks and spaces. This improves
signal quality by minimizing reflections off the trans-
mitter. Internal impedance matching reduces current
consumption by factor of nearly two compared to return
loss achieved by external resistors.
The transmitter provides for all ones insertion at the
frequency of REFCLK. Transmit all ones is selected
when TAOS goes high, and causes continuous ones to
be transmitted on the line (TTIP and TRING). In this
mode, the TPOS and TNEG, or TDATA, inputs are ig-
nored.
When any transmit control pin (TAOS, LLOOP, or
CON<0-2>) is toggled, the transmitter stabilizes within
22 bit periods. The transmitter will take longer to stabi-
lize when RLOOP is selected because the timing cir-
cuitry must adjust to the new frequency.
Recommended transmitter transformer specifications
are shown below:
When the transmitter transformer secondaries are
shorted via a 0.5ohm resistor, the transmitter will out-
put a maximum of 50 mA-rms, as required by the Bri-
tish OFTEL OTR-0001 specification.
Turns ratio
1:2 step-up for TX(T1)
1:2 step-down for RX(T1)
1:1.32 step-up for TX(E1)
1:1.32 step-down for RX(E1)
1.5 mH min measured at
772 kHz
0.3 uH max at 772 kHz
with secondary shorted
0.4 uH max at 772 kHz
Primary inductance
Primary leakage
Inductance
Secondary leakage
Inductance
Interwinding
Capacitance
ET-constant
18 pF max, primary to
secondary
16 V-us min
Table 2(a). Transformer Requirements
Turns Ratio
1:2(T1)
Part#
PE-65351
4023
67148170
4022
Manufacturer
Pulse Engineering
JPC Corporation
Schott Corporation
JPC Corporation
1:1.32(E1)
Table 2(b) Recommended Transformer
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