THS4521EVM Datasheet, PDF (3/15 Pages) Texas Instruments – THS4521/2/4EVM

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Power Connections
2 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.
2.1 Split-Supply Operation
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.
2.2 Single-Supply Operation
For single-supply operation, connect V_S– to GND with a jumper, and apply the positive supply voltage to
V_S+.
3 Input and Output Connections
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.
3.1 Power-Down 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.
EVM
THS4521EVM
THS4522EVM
THS4524EVM
Table 2. Jumper Configuration
Jumper
Open
JP1
Shorted
Open
JP1
Shorted
Open
JP2
Shorted
Open
JP1
Shorted
Open
JP2
Shorted
Open
JP3
Shorted
Open
JP4
Shorted
Operating Mode
Normal
Power down
CH1-Normal
CH1-Power down
CH2-Normal
CH2-Power down
CH1-Normal
CH1-Power down
CH2-Normal
CH2-Power down
CH3-Normal
CH3-Power down
CH4-Normal
CH4-Power down
SBOU080 – July 2009
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