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ADC12V170 Evaluation Board User’s Guide
N - 3 - www.national.com
Rev 0.0
1.0 Introduction
The ADC12V170 Evaluation Board is designed to
support the ADC12V170 12-bit 170 Mega Sample Per
Second (MSPS) Analog to Digital Converter with LVDS
Outputs.
The ADC12V170 Evaluation Board comes in two
versions:
1. ADC12V170HFEB (high frequency version)
for input frequencies greater than 150 MHz.
2. ADC12V170LFEB (low frequency version) for
input frequencies less than 150 MHz.
The digital data from the ADC12V170 evaluation board
can be captured with a suitable instrument, such as a
logic analyzer, or with National Semiconductor’s
WaveVision signal path data acquisition hardware and
software platform. The ADC12V170 evaluation board
can be connected to the data acquisition hardware
through the FutureBus connector (schematic reference
designator FB).
The ADC12V170 is compatible with National
Semiconductor’s WaveVision 5.1 and higher Signal
Path Digital Interface Board and associated
WaveVision software. Please note that the
ADC12V170 board is not compatible with previous
versions of the WaveVision hardware (WaveVision 4.x
Digital Interface Boards).
The WaveVision hardware and software package
allows fast and easy data acquisition and analysis. The
WaveVision hardware connects to a host PC via a USB
cable and is fully configured and controlled by the latest
WaveVision software. The latest version of the
WaveVision software is included in this evaluation kit
on a CD-ROM. The WaveVision 5.1 Signal Path Digital
Interface hardware is available through the National
Semiconductor website (part number: WAVEVSN 5.1).
2.0 Board Assembly
Each evaluation board from the factory is configured for
single-ended clock operation and is populated with an
analog input network which has been optimized for one
of two analog input frequencies ranges:
1. ADC12V170HFEB (high frequency version)
for input frequencies greater than 150 MHz.
2. ADC12V170LFEB (low frequency version) for
input frequencies less than 150 MHz.
Please refer to the input circuit configurations
described in the Analog Input Section (4.2) of this
guide.
The location and description of the components on the
ADC12V170 evaluation board can be found in Figure 1
as well as Section 5.0 (Schematic) and Section 7.0 (Bill
of Materials) of this user’s guide.
3.0 Quick Start
The ADC12V170 evaluation board enables easy set up
for evaluating the performance of the ADC12V170.
If the WaveVision data acquisition and data analysis
system is to be used for capturing data, please follow
the Quick Start Guide in the WaveVision User’s Guide
to install the required software and to connect the
WaveVision Digital Interface Board to the PC and to
the ADC12V170 evaluation board. Please note that the
ADC12V170 evaluation board is only compatible with
National Semiconductor’s WaveVision 5.1 and higher
Signal Path Digital Interface boards.
3.1 Evaluation Board Jumper Positions
The ADC12V170 evaluation board jumpers should be
configured as follows. Please refer to Figure 1 for the
exact jumper locations.
1. J1 on the reverse of the board should be shorted.
2. The PD jumper places the ADC12V170 into either
powerdown or sleep mode. Table 1 below shows
how to select between the power modes.
PD Jumper
Setting
Mode
Open Normal Operation
1-2 Power-down
3-4 Sleep
Table 1. CLK_SEL/DF Selection Table
3. CLK_SEL/DF pin jumpers select the output data
format (2’s complement or offset binary) and clock
mode (single-ended or differential). Table 2 below
shows how to select between the clock modes and
output data formats. Please note that the
ADC12V170 evaluation board is delivered with the
ADC12V170 clock input configured for single-
ended operation and Offset Binary output data
format (Jumper 7-8).
CLK_SEL/DF
Jumper
Setting
Clock Mode Output Data
Format
1-2 Differential 2’s Complement
3-4 Differential Offset Binary
5-6 Single-Ended 2’s Complement
7-8* Single-Ended Offset Binary
* As assembled from factory.
Table 2. CLK_SEL/DF Selection Table