ON Semiconductor NB3N1200K Page 6 User Manual Download

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NB3N1200KMNGEVB, NB3W1200LMNGEVB

http://onsemi.com

HCSL Output Measurement

HCSL outputs are typically terminated with 50-

ground. Measuring HCSL outputs can be easily
accomplished by:

NB3N1200K (HCSL Outputs) − 50-

Oscilloscope Head

With R

removed from board, connect the HCSL outputs

through the SMA connectors to the 50-

internal impedance

of the oscilloscope sampling head.

NB3N1200K (HCSL Outputs) − Use Hi-Z Probe

With R

installed, use a high-impedance probe on the

output’s metal trace. Holes for headers to connect to Hi-Z
probes are available, but the header pins are not installed.

•

Single-ended Hi-Z probes or,

•

Differential Hi-Z probe; (see layout below)

NB3W1200L (Push-Pull Outputs) − Use Hi-Z Probe

Rp is not installed

•

A 0-

series resistor is installed between the end of the

transmission line and the SMA connector. This resistor
can be removed, if needed, to eliminate any SMA
impedance/stub when using Hi-Z probes.

•

As a feature, an optional component can be installed on
each output, ie. additional capacitance loading etc.

The following figures describe the boards’ output

features:

Figure 10. Differential Outputs Schematic/PCB Configuration: Use Hi-Z Probe Scope for NB3W1200L

From: DUT Output

Ground

Hi-Z probe

Optional component to Ground, if
needed, when shorted to output trace.

Load

(2 pF), installed

Series R = 0-

installed

Short with 0-

resistor for use

with Hi-Z probe; 0-

installed.

Misc. Pins

FB_OUT & FB_OUT# − External Termination
of Feedback Pins

FB_OUT & FB_OUT# have convenient “test point

anvils” to monitor these pins with Hi-Z probe.

NB3N1200K (HCSL):
Since the FB_OUT & FB_OUT# pins do not drive
transmission lines (no SMAs), the board layout has these
pins loaded/terminated at the DUT per datasheet; 83-

GND is installed for the 100-

board.

NB3W1200L (Push-Pull):
FB_OUT & FB_OUT# resistors are not installed.

IREF Pin

NB3N1200K (HCSL):
The R

REF

resistor (R107) to GND for the HCSL output

part device.
R

REF

= 475-

is installed for the 100-

board.

NB3W1200L (Push-Pull)
R

REF

is not installed for the NB3W1200L device.

Summary of Contents for NB3N1200K

Page 1: ... differential outputs are loaded terminated and can be monitored with a high impedance probe as explained later in the manual The NB3N1200K Evaluation Board schematic is the same as the NB3W1200L schematic except the 1200L has some components depopulated DNI per the 1200L BOM The NB3W1200LMNGEVB does not have RP resistors installed on its differential Push Pull outputs The NB3W1200LMNGEVB does not...

Page 2: ...ice Pin Power Supply Connector Power Supply VDD 3 3 V VDDIO 1 05 V to 3 3 V GND 0 V Figure 2 Power Supply Connections Dual Power Supplies 3 3 V 0 V VDD GND 3 3 V 1 05 V to 3 3 V 1 05 V to 3 3 V VDDIO Single Power Supply 3 3 V 0 V VDD VDDIO GND 3 3 V Figure 3 Typical Lab Test Set Up 3 3 V 3 3 V 0 V INb IN Oscilloscope Signal Generator OUTb OUT Power Up Sequence 1 Turn on power supply 3 3 V VDD VDDI...

Page 3: ...ged manually with a H L jumper header H VDD L GND Tri Level Input Pins HBW_BYPASS_LBW SA0 and SA1 The three tri level input pins HBW_BYPASS_LBW SA0 and SA1 have selectable with jumper 4 7 k ohm pull up to VDD and 4 7 k ohm pull down to GND resistors No jumper defaults to open float For a HIGH Level Put Jumper to High For a LOW Level Put Jumper to Low For a MID Level Put Jumper to both High and Low...

Page 4: ...shed via the USB when the OE_n jumper is installed on the middle header position See Figure 6 Figure 6 OE_n Pins Schematic PCB Configuration OE OE VDD J47 37 1 2 3 4 5 6 USB GUI HI Jumper to VDD USB Jumper to Mid LO Jumper to GND 100M_133M Frequency Selection J55 The 100M_133M frequency selection pin can be controlled manually with the High Low header jumper J55 H 100 MHz L 133 MHz Figure 7 100M_1...

Page 5: ... 2 pF capacitors are installed on all outputs Rs Rp pads are located close to the DUT Rs 33 W is installed for both the NB3N1200K and NB3W1200L NB3N1200K HCSL Outputs RP is not installed on the six output pair with long metal traces to SMA connectors Use 50 W to GND of the oscilloscope head for RP Rp is installed 50 W to GND on the short metal traces without SMA connectors and will use Hi Z probes...

Page 6: ...using Hi Z probes As a feature an optional component can be installed on each output ie additional capacitance loading etc The following figures describe the boards output features Figure 10 Differential Outputs Schematic PCB Configuration Use Hi Z Probe Scope for NB3W1200L From DUT Output Ground Hi Z probe Optional component to Ground if needed when shorted to output trace CLoad 2 pF installed Se...

Page 7: ...puts or the NB3W1200L HCSL Push Pull outputs Incorporates on board I2C SMBus interface circuitry powered from a USB connection minimizing cabling Convenient and compact board layout 3 3 V power supply device operation Differential inputs outputs signals are accessed via SMA connectors or high impedance probes Other Board Features There are no vias on the high speed differential I O metal traces so...

Page 8: ...33M_N 4 HBW_BYP_LBW 5 PWRGD 6 SA0 11 SA1 14 PR7 R7 49 9 1 2 R27 49 9 1 2 R124 0 1 2 C27 10uF 10V 1 2 R79 4 7K 1 2 R47 49 9 1 2 C13 2 0pF 1 2 J21 DIF10 TP19 R85 4 7K 1 2 J48 1 2 3 4 5 6 J56 1 2 3 C18 2 0pF 1 2 J11 DIF5 R71 49 9 1 2 J4 DIF1 C34 100nF 1 2 C26 2 0pF 1 2 97 49 9 1 2 R127 0 1 2 TP26 R99 33 1 2 R73 33 1 2 R125 0 1 2 J70 SA1 LO 1 2 R49 33 1 2 TP15 C14 2 0pF 1 2 R11 49 9 1 2 TP20 R9 33 1 2...

Page 9: ... 10 VREGIN 50 VREGOUT 49 VCORE 12 VCORE 37 VCORE 64 DM 7 DP 8 GND 1 GND 5 GND 11 GND 15 GND 25 GND 35 GND 47 GND 51 TEST 13 EECS 63 EECLK 62 EEDATA 61 REF 6 RESET_N 14 SUSPEND_N 36 PWREN_N 60 OSCI 2 OSCO 3 GPIOH7 34 GPIOH6 33 GPIOH5 32 GPIOH4 30 GPIOH3 29 GPIOH2 28 GPIOH1 27 GPIOH0 26 J63 1 2 U4 NCP4586 3 3V IN 1 OUT 5 GND 2 EN 3 NC 4 J64 1 2 C59 1uF 10V 1 2 C45 100nF 1 2 C39 100nF 1 2 C50 10nF 16...

Page 10: ...601SN1D Yes Yes J3 J6 J11 J14 J19 J22 J37 J38 14 RF Connectors PC END MT JCK GLD 062 SMA_END_LA UNCH_0 062 Johnson Components 142 0701 801 Yes Yes J43 J44 J47 J48 J51 J52 6 Header Header Thru Hole 2 3 FCI 67996 206HLF Yes Yes J56 J55 2 Header Header 3 pin 3 pin Header thru hole 0 1 3M 961103 6404 AR Yes Yes J59 1 Banana Jack Thru Hole Red CON2_571 050 0_DELTRON Deltron 571 0500 Yes Yes J60 1 Banan...

Page 11: ...onic ERJ 3GEYJ2R2V Yes Yes R107 1 Resistor 475 W 1 0402 Panasonic ERJ 2RKF4750X Yes Yes R108 R109 2 Resistor 82 5 W 1 0402 Panasonic ERJ 2RKF82R5X Yes Yes R110 R111 R114 R116 R118 6 Resistor 10 kW 5 0402 Panasonic ERJ 2GEJ103X Yes Yes R112 R113 R121 R132 14 Resistor 0 W Jumper 0201 Panasonic ERJ 1GE0R00C Yes Yes R115 1 Resistor 12 kW 1 0402 Panasonic ERJ 2RKF1202X Yes Yes R119 1 Resistor 470 W 5 0...

Page 12: ...AG601SN1D Yes Yes J3 J6 J11 J14 J19 J22 J37 J38 14 RF Connectors PC END MT JCK GLD 062 SMA_END_LA UNCH_0 062 Johnson Components 142 0701 801 Yes Yes J43 J44 J47 J48 J51 J52 6 Header Header Thru Hole 2 3 FCI 67996 206HLF Yes Yes J56 J55 2 Header Header 3 pin 3 pin Header thru hole 0 1 3M 961103 6404 AR Yes Yes J59 1 Banana Jack Thru Hole Red CON2_571 050 0_DELTRON Deltron 571 0500 Yes Yes J60 1 Ban...

Page 13: ...es SCILLC assume any liability arising out of the application or use of any product or circuit and specifically disclaims any and all liability including without limitation special consequential or incidental damages Typical parameters which may be provided in SCILLC data sheets and or specifications can and do vary in different applications and actual performance may vary over time All operating ...

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