Altera Data Conversion HSMC - Manual (Page 17)

Chapter 2: Board Components and Interfaces 2–11
Component Interfaces
© November 2008 Altera Corporation Data Conversion HSMC Reference Manual
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 lists the D/A converter board reference and manufacturing information.
Table 2–14 provides the pin-out details of the D/A converter channel A and
channel B.
XT_IN_P 96 PCLK2P 9 Non-inverting Differential clock input
XT_IN_N 98 PCLK2N 10 Inverting Differential clock input
AD(A,B)_CLK_SEL_P — QP 15 Non-inverting Differential Clock Output
AD(A,B)_CLK_SEL_N — QN 14 Inverting Differential Clock Output
Table 2–12. Differential to LVDS Clock Multiplexer (U9, U10) Pin-Out Information (Part 2 of 2)
Schematic Signal
HSMC
Connector
Pin Number Device Signal
Device Pin
Number Description
Table 2–13. D/A Converter Component Reference
Board Reference Device Description Manufacturer
Manufacturing
Part Number
Manufacturer
Website
U3 14-bit, 275 MS/s D/A converter Texas Instruments DAC5672 www.ti.com
Table 2–14. D/A Converter Channel A and Channel B (U3) Pin-Out Information (Part 1 of 2)
HSMC Signal HSMC Pin Device Signal
Device Pin
Number Description
DA0 139 DA0 14 Data port A0
DA1 137 DA1 13 Data port A1
DA2 133 DA2 12 Data port A2
DA3 131 DA3 11 Data port A3
DA4 127 DA4 10 Data port A4
DA5 125 DA5 9 Data port A5
DA6 121 DA6 8 Data port A6
DA7 119 DA7 7 Data port A7
DA8 115 DA8 6 Data port A8
DA9 113 DA9 5 Data port A9