Datasheet

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Table 1. Jumper and Header Overview
(1)
Jumper
Jumper Function Description
Position
J1 CLK1 Capacitive Load 1-2 Connects 10 pF from CLK1 to GND
selection
3-4 Connects 22 pF from CLK1 to GND
5-6 Connects 33 pF from CLK1 to GND
7-8 Connects 47 pF from CLK1 to GND
J2 Input signal selection for 1-2 CLK1 selected
buffer LMH6559
3-4 TCXO selected
5-6 CLK2 selected
J3 CLK2 Capacitive Load 1-2 Connects 47 pF from CLK1 to GND
selection
3-4 Connects 33 pF from CLK1 to GND
5-6 Connects 22 pF from CLK1 to GND
7-8 Connects 10 pF from CLK1 to GND
J4 CLK Request Supply 1-2 V
BAT
Voltage
3-4 External Supply. 3=ground; 4=V
EXT
J5 Manual CLK_REQ1 Open CLK_REQ1 can be controlled externally via CON9
setting
1-2 CLK_REQ1 = GND
2-3 CLK_REQ1 = High.
J6 Manual CLK_REQ2 Open CLK_REQ2 can be controlled externally via CON11
setting
1-2 CLK_REQ2 = GND
2-3 CLK_REQ2 = High.
J7 Frequency input selection 1-2 External input frequency
for SCLK_IN
2-3 On board TCXO
J8 TCXO Supply 1-2 TCXO is supplied by V
OUT
3-4 External Supply. 3=V
EXT
; 4=ground
CON1 +5V Positive Supply for the buffer LMH6559.
Banana Receptacle
CON2 –5V Negative Supply for the buffer LMH6559.
Banana Receptacle
CON3 GND Ground Connection.
Banana Receptacle
CON4 V
OUT
LDO output voltage
Banana Receptacle
CON5 V
BAT
Supply Voltage of the DUT
Banana Receptacle
CON6 CLK1 Clock 1 output voltage
SMA Edge Launch receptacle
CON7 CLK2 Clock 2 output voltage
SMA Edge Launch receptacle
CON8 V
BUF
Buffered output voltage for CLK1, CLK2 and TCXO
SMA Edge Launch receptacle
CON9 CLK_REQ1 Connection for external signal for switching CLK1 ON or OFF
SMA Edge Launch receptacle
CON10 CLK_REQ2 Connection for external signal for switching CLK2 ON or OFF
SMA Edge Launch receptacle
CON11 Ext CLK Connection for external clock signal.
SMA Edge Launch receptacle
TP1 +5V Test Point Buffer Supply
TP2 –5V Test Point Buffer Supply
TP3 GND Test Point ground
(1)
Bold face jumper settings refer to the factory default configuration.
5
SNAA071A–July 2010–Revised May 2013 AN-2028 LMH2191 Evaluation Board
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