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Chapter 2: Board Components and Interfaces
Component Interfaces
Table 2–12. Differential to LVDS Clock Multiplexer (U9, U10) Pin-Out Information (Part 2 of 2)
Schematic Signal
XT_IN_P
XT_IN_N
AD(A,B)_CLK_SEL_P
AD(A,B)_CLK_SEL_N
A/D Converter Input SMA Connector (J4, J8)
J4 (channel A) and J8 (channel B) are standard through-hole SMA connectors used to
interface the AD9254 A/D converter input with SMA cables.
D/A Converter (U3)
The D/A converter (U3 for channels A and B) on the Data Conversion HSMC
provides 14-bit resolution and produces samples at rates up to 275 MS/s. It is a
high-speed TI DAC5672 D/A converter and is set up to drive a differential-to-single
output through a transformer. The output is transformer coupled and can be found on
the SMA connector (J12 for channel A, J14 for channel B). The output of the
TI DAC5672 D/A converter is set to the maximum output current of 20 mA. The
signal-to-noise ratio for the system is up to 60 dB for output signals from 1 MHz to the
Nyquist frequency of the converter.
Table 2–13
Table 2–13. D/A Converter Component Reference
Board Reference
Device Description
U3
14-bit, 275 MS/s D/A converter
Table 2–14
channel B.
Table 2–14. D/A Converter Channel A and Channel B (U3) Pin-Out Information (Part 1 of 2)
HSMC Signal
HSMC Pin
139
DA0
137
DA1
133
DA2
131
DA3
127
DA4
125
DA5
121
DA6
119
DA7
115
DA8
113
DA9
© November 2008 Altera Corporation
HSMC
Connector
Pin Number
Device Signal
96
PCLK2P
98
PCLK2N
—
QP
—
QN
lists the D/A converter board reference and manufacturing information.
Texas Instruments
provides the pin-out details of the D/A converter channel A and
Device Signal
DA0
DA1
DA2
DA3
DA4
DA5
DA6
DA7
DA8
DA9
Device Pin
Number
9
Non-inverting Differential clock input
10
Inverting Differential clock input
15
Non-inverting Differential Clock Output
14
Inverting Differential Clock Output
Manufacturing
Manufacturer
Part Number
DAC5672
Device Pin
Number
14
Data port A0
13
Data port A1
12
Data port A2
11
Data port A3
10
Data port A4
9
Data port A5
8
Data port A6
7
Data port A7
6
Data port A8
5
Data port A9
Description
Manufacturer
Website
www.ti.com
Description
Data Conversion HSMC Reference Manual
2–11
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