参数资料
| 型号： | NB6L239MNEVB |
| 厂商： | ON Semiconductor |
| 文件页数： | 2/6页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL BBG NB6L239MND |
| 设计资源： | NB6L239MNEVB Gerber Files |
| 标准包装： | 1 |
| 系列： | * |
NB6L239MNEVB
PROCEDURE
Lab Setup and Measurement Procedure
Dual Power Supplies
Equipment Used
? Agilent Signal Generator #8133A
? Tektronix TDS8000 Oscilloscope
? Agilent #6624A DC Power Supply
? Digital Voltmeter
? Matched High ? Speed Cables with SMA Connectors
Power Supply Connections
+
V CC
+2.0 V
?
V TT
+1.3 V
+
?
V EE
The NB6L239 has a positive supply pin, V CC , and a
negative supply pin, V EE . SMAGND = V TT = V CC – 2.0 V
is the termination supply for the LVPECL outputs, only.
Power supply terminals V CC , V EE and SMAGND are
provided. The SMAGND terminal is for the isolated SMA
connector GROUND plane, and is not to be confused with
a device V EE pin. Since SMAGND = V TT = V CC – 2.0 V, is
the termination supply for the LVPECL outputs, by
offsetting V CC by +2.0 V yields V TT = 0 V or Ground. A
“split” or dual power supply technique can be used to take
advantage of terminating the PECL outputs into 50 W to
Ground of an oscilloscope or a frequency counter.
(see AND8020/D for more information on
terminating ECL).
Table 1. POWER SUPPLY CONFIGURATIONS
Power Supply
Device Connector
Pin Color “Spilt” Power Supply
V CC RED V CC = +2.0 V
? BLACK ? V TT = V CC – 2 V = 0 V
SMAGND
V EE – 239 YELLOW V EE = ? 1.3 V (or –0.5 V)
+3.3 V
Figure 2. “Split” or Dual Power Supply Connections
NB6L239
To monitor the QA/QA and QB/QB outputs on an
oscilloscope, the power supply needs to be DC offset:
1. Connect a “split” power supply to the evaluation
board. (Figure 1)
Connect V CC to +2.0 V
Connect SMAGND to 0 V
Connect V EE to ? 1.3 V for 3.3 V operation; or
–0.5 V for 2.5 V operation
2. Ensure the oscilloscope is triggered properly and
has 50 W termination to ground. The board does
not provide 50 W source termination resistors.
Trigger the oscilloscope from trigger output of
signal generator.
3. Connect the LVPECL QA/QA and QB/QB outputs
to the oscilloscope with matched cables. The
outputs are terminated with 50 W to V TT
(V CC – 2.0 V) = 0 V = Ground internal to
the oscilloscope.
http://onsemi.com
2
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| NB6L239MNG | 功能描述:时钟驱动器及分配 2.5V/3.3V LVPECL Out Dual Bank RoHS:否 制造商:Micrel 乘法/除法因子:1:4 输出类型:Differential 最大输出频率:4.2 GHz 电源电压-最大: 电源电压-最小:5 V 最大工作温度:+ 85 C 封装 / 箱体:SOIC-8 封装:Reel |
| NB6L239MNR2 | 功能描述:时钟驱动器及分配 2.5V/3.3V LVPECL Out RoHS:否 制造商:Micrel 乘法/除法因子:1:4 输出类型:Differential 最大输出频率:4.2 GHz 电源电压-最大: 电源电压-最小:5 V 最大工作温度:+ 85 C 封装 / 箱体:SOIC-8 封装:Reel |
| NB6L239MNR2G | 功能描述:时钟驱动器及分配 2.5V/3.3V LVPECL Out Dual Bank RoHS:否 制造商:Micrel 乘法/除法因子:1:4 输出类型:Differential 最大输出频率:4.2 GHz 电源电压-最大: 电源电压-最小:5 V 最大工作温度:+ 85 C 封装 / 箱体:SOIC-8 封装:Reel |
| NB6L295 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:2.5V / 3.3V Dual Channel Programmable Clock/Data Delay with Differential LVPECL Outputs |
| NB6L295M | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:2.5V / 3.3V Dual Channel Programmable Clock/Data Delay with Differential CML Outputs |
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