ON Semiconductor NBSG16VSBAEVB, NBSG16BAEVB User Manual
NBSG16BAEVB,
NBSG16VSBAEVB
Evaluation Board Manual
for NBSG16 and NBSG16VS
DESCRIPTION
This document describes the NBSG16/16VS evaluation
board and the appropriate lab test setups. It should be used
in conjunction with the NBSG16/16VS data sheets which
contain full technical details on the device specifications and
operation. The same PCB is used to evaluate both devices.
The evaluation board is designed to facilitate a quick
evaluation of the NBSG16/16VS GigaComm Differential
Receiver/Driver. The NBSG16 is designed to function as a
high speed receiver/driver device with a reduced output
swing capability suitable for use in high speed signal
amplification and backplane interface applications. The
Reduced Swing ECL (RSECL) output ensures minimal
noise and fast switching edges. The NBSG16VS has the
option to vary the output amplitude swing (additional
V
modulation pin, labeled VS on evaluation board).
CTRL
The evaluation board is implemented in two layers for
higher performance. For standard lab setup and test, a split
(dual) power supply is required enabling the 50 ohm
impedance in the scope to be used as termination of the ECL
signals (V
is the system ground).
= VCC – 2.0 V, in split power supply setup, V
TT
TT
What measurements can you expect to make?
could be performed in single-ended
of operation:
• Jitter
• Output Skew
• Gain/Return Loss
• Eye Pattern Generation
• Frequency Performance
• Output Rise and Fall Time
• V
1. Single-ended measurements can only be made at
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EVALUATION BOARD MANUAL
With this evaluation board, the following measurements
(Input High Common Mode Range)
IHCMR
V
- VEE = 3.3 V using this board setup.
CC
(1)
or differential modes
Semiconductor Components Industries, LLC, 2003
March, 2003 - Rev. 0
Figure 1. NBSG16/16VS Evaluation Board
1 Publication Order Number:
NBSG16BAEVB/D
Setup
NBSG16BAEVB, NBSG16VSBAEVB
Setup for Time Domain Measurements
T able 1. Basic Equipment
Description Example Equipment (Note 1) Qty.
Power Supply with 4 outputs HP6624A 1
Oscilloscope TDS8000 with 80E01 Sampling Head (Note 2) 1
Differential Signal Generator HP 8133A, Advantest D3186 1
Matched High Speed Cables with SMA Connectors Storm, Semflex 4
Power Supply Cables with Clips 3/4 (Note 3)
1. Equipment used to generate example measurements within this document.
2. 50 GHz sampling head used (for effective rise, fall and jitter performance measurement)
3. An additional power supply cable with a surface mount clip is necessary to test the NBSG16VS due to the
connection.
V
CTRL
Connect Power
Step 1:
Step 2:
1a: Three power levels must be provided to the board for VCC, VEE, and GND via the surface
mount clips. Using the split power supply mode, GND = V
NBSG16/16VS Power Supply Connections
3.3 V Setup
VCC = 2.0 V (Two Places) VCC = 2.0 V (Two Places)
VTT = GND (One Place) VTT = GND (One Place)
VEE = -1.3 V (One Place) VEE = -0.5 V (One Place)
NBS/16VS Only Power Supply Connection
3.3 V Setup
V
(One Place) V
CTRL
NOTE: For NBSG16VS only: Adjustable power supply is needed to modulate output amplitude by
varying V
Swing Control) voltage level for the desired output swing. Refer to NBSG16VS data sheet
Figures 4 and 5.
pin as shown in Figures 2 through 6. Connect the V
CTRL
Connect Inputs
(One Place)
CTRL
= VCC – 2.0 V.
TT
2.5 V Setup
2.5 V Setup
CTRL
(Output Amplitude
For Differential Mode (3.3 V and 2.5 V operation)
2a: Connect the differential output of the generator to the differential input of the device
(D and D).
For Single-Ended Mode (3.3 V operation only)
2a: Connect the AC coupled single-ended output generator to input.
NOTE: Device may oscillate when the input is not driven. For best results, unconnected input should be
terminated to V
through 50 resistor
TT
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2
NBSG16BAEVB, NBSG16VSBAEVB
Advantest D3186
Signal Generator
(12 GHz)
Amplitude = 500 mV
Offset = 660 mV
TRIGGER
NOTE: All differential cable pairs
WARNING: V
Setup (continued)
NBSG16VS
ONLY
OUT
OUT
CTRL
must not
VCC = 2.0 V
V
CC
D
D
V
BB
V
BB
V
EE
V
EE
must be
be connected for NBSG16 evaluation board connection or damage may result
matched.
VTT = 0 V
GND
C2
C1
C1
V
EE
= -1.3 V (3.3 V op)
= -0.5 V (2.5 V op)
V
CTRL
Q
Q
GND
VTT = 0 V
Figure 2. NBSG16/16VS Board Setup - Time Domain (Differential Mode)
Tektronix TDS8000
Digital Oscilloscope
Channel 1 (80E01)
Channel 2 (80E01)
TRIGGER
Step 3:
Step 4:
Setup Input Signals
3a: Set the signal generator amplitude to 500 mV.
NOTE: The signal generator amplitude can vary from 75 mV to 900 mV to produce a 400 mV DUT
output.
3b: Set the signal generator offset to 660 mV (the center of a nominal RSECL output).
NOTE: The V
vary as long as V
information.
(Input High Voltage Common Mode Range) allows the signal generator offset to
IHCMR
is within the V
IH
range. Refer to the device data sheet for further
IHCMR
3c: Set the generator output for a PRBS data signal, or for a square wave clock signal with
a 50% duty cycle.
Connect Output Signals
4a: Connect the outputs of the device (Q, Q) to the oscilloscope. The oscilloscope
sampling head must have internal 50 termination to ground.
NOTE: Where a single output is being used, the unconnected output for the pair
V
through a 50 resistor for best operation. Unused pairs may be left unconnected. Since
TT
V
= 0 V, a standard 50 SMA termination is recommended.
TT
must be
terminated to
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3
NBSG16BAEVB, NBSG16VSBAEVB
Advantest D3186
Signal Generator
(12 GHz)
AC Coupling
OUT
OUT
Amplitude = 500 mV
Offset = 660 mV
TRIGGER
NOTE: All differential cable pairs
Figure 3. NBSG16/16VS Board Setup - Time Domain (Single-Ended Mode)
VCC = 2.0 V
V
CC
VTT = 0 V
GND
V
CTRL
NBSG16VS
ONLY
C2
D
C1
Q
D
V
BB
V
BB
must be
V
EE
= -1.3 V (3.3 V op)
V
EE
matched.
C1
Q
GND
VTT = 0 V
Setup for Frequency Domain Measurements
Tektronix TDS8000
Digital Oscilloscope
Channel 1 (80E01)
Channel 2 (80E01)
TRIGGER
T able 2. Basic Equipment
Description Example Equipment (Note 4) Qty.
Power Supply with 4 outputs HP 6624A 1
Vector Network Analyzer (VNA) R&S ZVK (10 MHz to 40 GHz) 1
180° Hybrid Coupler Krytar Model #4010180 1
Bias Tee with 50 Resistor Termination Picosecond Model #5542-219 1
Matched High Speed Cables with SMA Connectors Storm, Semflex 3
Power Supply Cables with Clips 3/4 (Note 5)
4. Equipment used to generate example measurements within this document.
5. An additional power supply cable with a surface mount clip is necessary to test the NBSG16VS due to the
V
CTRL
connection.
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4
Setup
Step 1:
NBSG16BAEVB, NBSG16VSBAEVB
Connect Power
1a:Three power levels must be provided to the board for VCC, VEE, and GND via the surface mount clips. Using the split power supply mode, GND = V
NBSG16/16VS Power Supply Connections
3.3 V Setup
VCC = 2.0 V (Two Places)
VTT = GND (One Place)
VEE = -1.3 V (One Place)
NBS/16VS Only Power Supply Connection
3.3 V Setup
V
(One Place)
CTRL
= VCC – 2.0 V.
TT
NOTE: For frequency domain measurements, 2.5 V power supply is not recommended because
additional equipment (bias tee, etc.) is needed for proper operation. The input signal has to
be properly offset to meet V
range of the device.
IHCMR
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