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参数资料
| 型号： | E672-EDGE672 |
| 英文描述： | 500 MHz Pin Electronics Window Comparator and Load |
| 中文描述： | 500兆赫引脚电子窗口比较器和负载 |
| 文件页数： | 11/15页 |
| 文件大小： | 118K |
| 代理商： | E672-EDGE672 |
5
2000 Semtech Corp.
www.semtech.com
EDGE HIGH-PERFORMANCE PRODUCTS
PRELIMINARY
Edge672
Circuit Description (continued)
Load Configuration
The load is flexible in that VCMOUT, BRIDGE SINK, and
BRIDGE SOURCE are all brought out to separate pins.
This flexibility allows the load to be configured in several
different ways.
The standard load topology, where VCMOUT, BRIDGE
SINK, and BRIDGE SOURCE are all connected together
(see Figure 4), behaves like the traditional active load.
Figure 4. Standard Active Load Configuration
VCMIN
VCMOUT BRIDGE
SINK
BRIDGE
SOURCE
LOAD
VCMIN
(V clamp Lo)
VCMOUT BRIDGE
SINK
BRIDGE
SOURCE
LOAD
VCMIN
Clamping Function
The load can also act as set of programmable clamps
that can absorb any DUT overshoot that would normally
be present when the pin electronics are receiving a DUT
signal.
By connecting VCMOUT and BRIDGE SINK
together, and then bringing in an externally buffered
voltage to BRIDGE SOURCE (see Figure 5), VCMIN
becomes the low voltage clamp and the external voltage
becomes the high voltage clamp.
Figure 5. Load as a Programmable Clamp
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