Power-Supplies

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4

Power-Supplies

J2 provides access to the +5 VA for the V

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

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

Copyright © 2010, Texas Instruments Incorporated