Sundance SMT791 - Manual (Page 20)

Diagram
Ref Pcb
RefDes Description Notes
H JP2 FPGA JTAG
Connector
FPGA on main board JTAG Chain. Use
for easy access without having to
remove the SMT391.
K JP1 MSP JTAG Connector N/A
L U1 Atmel Dual ADC ADC Requires heat-sink with air-flow
cooling in a system setup
I VCO1 UMC 600 – 1000MHz
VCO Main Clock source for SMT391. VCO
Requires heat-sink with air-flow cooling
in a system setup.
I VCO2 UMC 200 – 350MHz
VCO Test Clock for testing the analog input
of the ADC. VCO Requires heat-sink
with air-flow cooling in a system setup.
J TRANS1 M/A Com TP101
Transformer
By default the SMT391 analog input is
AC coupled through a twisted pair
balum transformer (single ended to
differential). It is possible to order the
SMT391 with a DC coupled input using
a 1:1 balum transformer (circuit also
wired as single ended input on
connector side to differential input on
ADC side). Refer to section 2.11 for
more details.
J TRANS2 M/A Com TP101
Transformer
By default the SMT391 analog input is
AC coupled through a twisted pair
balum transformer (single ended to
differential). It is possible to order the
SMT391 with a DC coupled input using
a 1:1 balum transformer (circuit also
wired as single ended input on
connector side to differential input on
ADC side). Refer to section 2.11 for
more details.
Table 3: Table of Component Locations on SMT391.
User Manual SMT791 Page 20 of 20 Last Edited: 12/10/2010 09:52:00