Datasheet

2 Power Connections
2.1 Split-Supply Operation
2.2 Single-Supply Operation
3 Input and Output Connections
3.1 Power-Down Operation
www.ti.com Power Connections
The THS4521/2/4EVMs are equipped with banana jacks for easy power connections. The positive supply
input is labeled V
S+
. The negative supply input is labeled V
S–
. Ground is labeled GND.
For split-supply operation, apply the positive supply voltage to V
S+
, the negative supply voltage to V
S–
, and
the ground reference from supply to GND.
For single-supply operation, connect V
S–
to GND with a jumper, and apply the positive supply voltage to
V
S+
.
The THS4521/2/4EVMs are equipped with SMA connectors for easy connection of signal generators and
analysis equipment. As shipped from the factory, the EVMs are configured for single-ended input and
output with termination for connection to 50- Ω test equipment. For best results, the signal should be
routed to and from the EVM with cables that have 50- Ω characteristic impedance. Refer to the THS4521,
THS4522, THS4524 product data sheet , and the schematics and layouts provided in this user guide for
details on how to reconfigure the EVM board for differential input or output operation.
The THS4521/2/4EVMs enable normal operation of the respective devices, or they can each be placed
into a power-down mode through the placement of jumpers, as shown in Table 2 .
Table 2. Jumper Configuration
EVM Jumper Operating Mode
Open Normal
THS4521EVM JP1
Shorted Power down
Open CH1-Normal
JP1
Shorted CH1-Power down
THS4522EVM
Open CH2-Normal
JP2
Shorted CH2-Power down
Open CH1-Normal
JP1
Shorted CH1-Power down
Open CH2-Normal
JP2
Shorted CH2-Power down
THS4524EVM
Open CH3-Normal
JP3
Shorted CH3-Power down
Open CH4-Normal
JP4
Shorted CH4-Power down
SBOU080 – July 2009 THS4521/2/4EVM 3
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