參數(shù)資料
型號(hào)： BU-61745F4-122
廠商： DATA DEVICE CORP
元件分類(lèi)： 微控制器/微處理器
英文描述： 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CQFP72
封裝： 1 X 1 INCH, 0.155 INCH HEIGHT, FP-72
文件頁(yè)數(shù)： 36/56頁(yè)
文件大小： 304K
代理商： BU-61745F4-122
41
TRANSFORMERS
In selecting isolation transformers to be used with the Enhanced
Mini-ACE, there is a limitation on the maximum amount of leak-
age inductance. If this limit is exceeded, the transmitter rise and
fall times may increase, possibly causing the bus amplitude to fall
below the minimum level required by MIL-STD-1553. In addition,
an excessive leakage imbalance may result in a transformer
dynamic offset that exceeds 1553 specifications.
The maximum allowable leakage inductance is 6.0 H, and
is measured as follows:
The side of the transformer that connects to the Enhanced
Mini-ACE is defined as the “primary” winding. If one side of the
primary is shorted to the primary center-tap, the inductance
should be measured across the “secondary” (stub side) winding.
This inductance must be less tha 6.0 H. Similarly, if the other
side of the primary is shorted to the primary center-tap, the
inductance measured accross the “secondary” (stub side) wind-
ing must also be less than 6.0 H.
The difference between these two measurements is the
“differential” leakage inductance. This value must be less than
1.0 H.
Beta Transformer Technology Corporation (BTTC), a subsidiary
of DDC, manufactures transformers in a variety of mechanical
configurations with the required turns ratios of 1:2.5 direct cou-
pled, and 1:1.79 transformer coupled. TABLE 46 provides a list-
ing of many of these transformers.
For further information, contact BTTC at 631-244-7393 or at
www.bttc-beta.com.
LPB-5015
B-3310
HLP-6015
Dual epoxy transformer, side by side, surface mount, 0.930" X 0.630", 0.155 max height
Single metal transformer, hermetically sealed, surface mount, 0.630" X 0.630", 0.175" max height
B-3261
HLP-6014
Dual epoxy transformer, side by side, flat pack, 0.930" X 0.630", 0.155 max height
Single metal transformer, hermetically sealed, flat pack, 0.630" X 0.630", 0.175" max height
B-3300
Dual epoxy transformer, side by side, through-hole, 0.930" X 0.630", 0.155 max height
TST-9027
Dual epoxy transformer, twin stacked, flat pack, 0.625" X 0.625", 0.280" max height
TST-9017
Dual epoxy transformer, twin stacked, surface mount, 0.625" X 0.625", 0.280" max height
TST-9007
Dual epoxy transformer, twin stacked, 0.625" X 0.625", 0.280" max height
B-3819
LPB-5014
Single epoxy transformer, surface mount, hi-temp solder, 0.625" X 0.625", 0.220" max height.
May be used with BU-6XXXXX4 versions of the Enhanced Mini-ACE.B-3819
Single epoxy transformer, flat pack, 0.625" X 0.625", 0.150" max height
B-3227
Single epoxy transformer, surface mount, 0.625" X 0.625", 0.275" max height
B-3231
Single epoxy transformer, flat pack, 0.625" X 0.625", 0.275" max height
B-3818
B-3226
Single epoxy transformer, through-hole, 0.625 X 0.625, 0.220" max height.
May be used with BU-6XXXXX4 versions of the Enhanced Mini-ACE.
Single epoxy transformer, through-hole, 0.625 X 0.625, 0.250" max height
BTTC PART NO.
TRANSFORMER CONFIGURATION
Single epoxy transformer, surface mount, 0.625" X 0.625", 0.150" max height
TABLE 46. BTTC TRANSFORMERS FOR USE WITH ENHANCED MINI-ACE
NOTES:
1.
For the BU-6XXXXX4 versions of the Enhanced Mini-ACE, which include the McAir-compatible transceivers, only the B-3818 or B-3819 trans-
formers (shown in bold in the table) may be used.
2.
For the BU-6XXXXX3 versions of the Enhanced Mini-ACE with -1553B transceivers, any of the transformers listed in the table may be used.
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