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参数资料
| 型号： | BU-64703B4-300 |
| 厂商： | DATA DEVICE CORP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 2 CHANNEL(S), 1M bps, MIL-STD-1553 CONTROLLER, CBGA80 |
| 封装： | CERAMIC, BGA-80 |
| 文件页数： | 19/48页 |
| 文件大小： | 405K |
| 代理商： | BU-64703B4-300 |
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26
Data Device Corporation
www.ddc-web.com
BU-64703
D-03/06-0
+3.3V PULSE TRANSFORMERS
In selecting isolation transformers to be used with the SSRT
Mark3 , there is a limitation on the maximum amount of leakage
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 a function of the
coupling method. For Transformer Coupled applications, it is a
maximum of 5.0 H. For Direct it is a maximum of 10.0 H, and
is measured as follows:
The side of the transformer that connects to the SSRT Mark3 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 than 5.0 H (Transformer Coupled) and
10.0 H (Direct Coupled). Similarly, if the other side of the pri-
mary is shorted to the primary center-tap, the inductance mea-
sured across the "secondary" (stub side) winding must also be
less than 5.0 H (Transformer Coupled) and 10.0 H (Direct
Coupled).
The difference between these two measurements is the "differ-
ential" leakage inductance. This value must be less than 1.0 H
(Transformer Coupled) and 2.0 H (Direct Coupled).
Beta Transformer Technology Corporation (BTTC), a subsidiary
of DDC, manufactures transformers in a variety of mechanical
configurations with the required turns ratios of 1:3.75 direct cou-
pled, and 1:2.7 transformer coupled. TABLE 4 provides a listing
of many of these transformers.
For further information, contact BTTC at 631-244-7393 or at
www.bttc-beta.com.
TABLE 4. BTTC TRANSFORMERS FOR USE WITH SSRT Mark3 BU-64703X8/9
LVB-4223
Single epoxy transformer, surface mount, transformer coupled,
0.625" X 0.630", 0.300" max height, +130° C max
LVB-4103
LVB-4123
Single epoxy transformer, surface mount, direct coupled,
0.625" X 0.630", 0.300" max height, +130° C max
LVB-4113
Single epoxy transformer, surface mount, direct coupled,
0.625" X 0.625", 0.130" max height, +85° C max
LVB-4213
Single epoxy transformer, surface mount, transformer coupled,
0.625" X 0.625", 0.130" max height, +85° C max
LVB-4203
Single epoxy transformer, through-hole, transformer coupled,
0.625" X 0.630", 0.300" max height, +130° C max
BTTC PART NO.
TRANSFORMER CONFIGURATION
Single epoxy transformer, through-hole, direct coupled,
0.625" X 0.630", 0.300" max height, +130° C max
Notes:
1. SMT (Surface Mount) body package size (a” x b”) does not include leads.
The list of approved transformers for use with SSRT Mark3 is constantly being updated. Please
contact Beta Transformer Technology Corporation for the latest transformer configuration infor-
mation.
(B-3391)
(B-3383)
(B-3392)
(B-3390)
(B-3389)
(B-3372)
(BTTC LEGACY PART NO.)
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