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| 型号： | EVAL-ADCMP563BRQZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 4/12页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION ADCMP563BRQZ |
| 标准包装： | 1 |
| 主要目的： | 接口，比较器 |
| 已用 IC / 零件： | ADCMP563 |
| 已供物品： | 板 |
| 相关产品： | ADCMP563BRQ-ND - IC COMPARATOR ECL DUAL 16QSOP ADCMP563BRQZ-ND - IC COMPARATOR ECL DUAL 16QSOP |
EVAL-ADCMP551/552/561/562/563/564
EVALUATION BOARD HARDWARE
DC THRESHOLDS
If the comparator is operated in single-ended mode, dc
threshold inputs are made available through the THRESH A
and THRESH B blue banana jacks. A dc voltage threshold is
applied to the appropriate jack, filtered by the on-board
capacitors, and made available on an SMA connector. The SMA
connector can then be connected with a short cable to the
OUTPUTS
The comparator outputs QA, QA, QB, and QB are made
available on their respectively named SMA connectors. There is
a resistor divider network in the output path that enables the
outputs to be terminated 50 Ω to GND. The resistor network is
desired input pin of the comparator. This option allows the
+IN
50 ?
Q
board to maintain a clean 50 Ω environment on every
comparator input.
–IN
100 ?
100 ?
50 ?
QB
The THRESH B SMA contains a connection to the THRESH B
ADJUST, which is a potentiometer connected between VCC
and VEE. With Jumper P5 installed, the THRESH B ADJUST
can be used to program a desired threshold voltage on the
THRESH B SMA. This allows for fewer supply voltages.
A dc threshold can also be applied directly to the comparator
input through a coaxial cable.
INPUTS
The comparator inputs ?INA, +INA, ?INB, and +INB are
accessed on the evaluation board through SMA connectors.
and the comparator inputs. The input path for each comparator
input pin is a 50 Ω trace that flies by the input pin and can be
sampled on an SMA connector marked with an *_S for sample.
The fly-by allows the user to monitor the signal that is applied
to the comparator. If the fly-by path is not used, the proper
termination for the incoming input signal should be installed.
In most ac cases, this is a 50 Ω to GND connector; in dc cases, it
should be left open.
Table 2. SMA Input Connections
VTERM
Figure 2. Evaluation Board Output Termination Scheme
The parallel combination of the resistors, when the output is
terminated 50 Ω to GND, is equal to 50 Ω. The termination
voltage is cut in half with this configuration, which is why it is
doubled to maintain proper termination for an ECL or PECL
output stage. The outputs can be connected directly to an
oscilloscope that has a 50 Ω to GND termination. While this is
convenient for measurements, it is also necessary to realize that
the output levels are cut in half with this method.
LATCHES
The latch inputs on the evaluation board are set up in a similar
method as the inputs. The latch inputs are accessed through the
appropriately named SMA connectors. The corresponding fly-
by SMA connectors are labeled with *_S. The latches can be
driven with an ac source or left open. If the latches are left open,
then the comparator defaults to the compare mode where the
output tracks the input.
Pin
+INA
?INA
+INB
?INB
SMA Input
IA
IA
IB
IB
SMA Fly-By
IA_S
IA_S
IB_S
IB_S
Rev. 0 | Page 4 of 12
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| EVAL-ADCMP564BRQ | 制造商:AD 制造商全称:Analog Devices 功能描述:Dual, High Speed ECL Comparators |
| EVAL-ADCMP564BRQZ | 功能描述:BOARD EVALUATION ADCMP564BRQZ RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 标准包装:1 系列:- 主要目的:电信，线路接口单元（LIU） 嵌入式:- 已用 IC / 零件:IDT82V2081 主要属性:T1/J1/E1 LIU 次要属性:- 已供物品:板，电源，线缆，CD 其它名称:82EBV2081 |
| EVAL-ADCMP565BPZ | 功能描述:BOARD EVALUATION ADCMP565BPZ RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 标准包装:1 系列:- 主要目的:电信，线路接口单元（LIU） 嵌入式:- 已用 IC / 零件:IDT82V2081 主要属性:T1/J1/E1 LIU 次要属性:- 已供物品:板，电源，线缆，CD 其它名称:82EBV2081 |
| EVAL-ADCMP566BCPZ | 功能描述:BOARD EVALUATION ADCMP566BPZ RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 标准包装:1 系列:- 主要目的:电信，线路接口单元（LIU） 嵌入式:- 已用 IC / 零件:IDT82V2081 主要属性:T1/J1/E1 LIU 次要属性:- 已供物品:板，电源，线缆，CD 其它名称:82EBV2081 |
| EVAL-ADCMP567BCPZ | 功能描述:BOARD EVALUATION ADCMP567BCP RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 标准包装:1 系列:- 主要目的:电信，线路接口单元（LIU） 嵌入式:- 已用 IC / 零件:IDT82V2081 主要属性:T1/J1/E1 LIU 次要属性:- 已供物品:板，电源，线缆，CD 其它名称:82EBV2081 |
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