Texas Instruments AMC1204EVM, User Manual, Page: 4 / 9

Power-Supplies
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4 Power-Supplies
J2 provides access to the +5 VA for the V
DD
2 supply. All power to the board should be sourced from a
well-regulated, linear supply that has current limiting capabilities. Power is to be applied through J2.
Table 1 describes the pinout for J2.
Table 1. J2: Power Supply and Digital Outputs
Signal Pin Number Signal
Ground 1 2 Not used
4.5 to 5.5 V
DD
2 supply 3 4 Not used
Ground 5 6 Optional CLKIN output
CLKIN default 7 8 DATA default
Optional DATA output 9
For standalone operation, power sources can also be applied via a mating connector to J2, and the digital
output data stream can be wired directly to an FPGA or other digital filter module for further processing.
Refer to
Figure 2 or the schematic appended to the end of this document for additional details.
5 EVM Set-up and Operation
This section describes the general operation of the AMC1204EVM.
5.1 Isolated Power and Analog Inputs: J1 and J4
The isolated power input to the AMC1204EVM printed circuit board (PCB) can be applied directly to J1,
pins 1 and 2.
Table 2 lists the details of J1.
Table 2. J1: Isolated Power
Pin Number Signal Description
J1.1 ISOGND Connection to the AMC1204 GND1 pin
J1.2 5 V
ISO
Connection to the AMC1204 VDD1 terminal
The analog input to the AMC1204EVM PCB can be applied directly to J4 pins 1 and 2. Table 3 lists the
details of J4.
CAUTION
Carefully review the AMC1204 product data sheet for the limitations of the
analog input range, and ensure that the appropriate analog/digital voltages are
applied before connecting any analog input to the EVM.
Table 3. J4: Analog Inputs
Pin Number Signal Description
J4.1 CHA+ Noninverting analog input to the AMC1204
J4.2 CHA– Inverting input to the AMC1204
4 AMC1204EVM SBAU178 – August 2010
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