Texas Instruments ADS5413EVM, Руководство пользователя

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1-2
1.1 Purpose
The ADS5413 EVM provides a platform for evaluating the ADS5413
analog-to-digital converter (ADC) under various signal, reference, and supply
conditions. This document should be used in combination with the EVM
schematic diagram supplied.
1.2 EVM Basic Functions
Analog input to the ADC is provided via two external SMA connectors. The
single-ended input the user provides is converted into a differential signal at
the input of the device. One input uses a differential amplifier, while the other
input is transformer coupled.
The EVM provides external SMA connectors for input of the ADC clock. The
EVM allows the user to send a single-ended or differential clock to the ADC.
Another SMA connector allows the user to send a second clock source to the
output connector along with the digital data. This allows the user to provide the
required setup and hold times of the output data with respect to the output
clock. See the Clock Inputs section for proper configuration and operation.
Digital outputs from the EVM are via a 40-pin connector. The digital lines from
the ADC are buffered before going to this connector. More information on
these connectors can be found in the ADC output section.
Power connections to the EVM are via banana jack sockets. Separate sockets
are provided for the ADC core, output drivers, and external
reference/differential amplifier supplies.
1.3 Power Requirements
The EVM can be powered directly with only a 3.3-V supply if using the ADC
with 3.3-VDC output levels.
±
5 V is required if using the differential amplifier input. 1.8 V is required for
DRVDD if 1.8-V logic output levels are desired.
1.3.1 Voltage Limits
Exceeding the maximum input voltages can damage EVM components.
Under voltage may cause improper operation of some or all of the EVM
components.
1.4 ADS5413 EVM Operational Procedure
The ADS5413EVM provides a flexible means of evaluating the ADS5413 in a
number of modes of operation. A basic set-up procedure that can be used as
a board confidence check is as follows:
1) Verify all jumper settings against the schematic jumper listed in Table 1−1
and Table 1−2.