Datasheet

Power-Supplies

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4 Power-Supplies

J2 provides access to the +5 VA for the V

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

2 supply 3 4 Not used

Ground 5 6 Optional MCLK output

MCLK default 7 8 MDAT default

Optional MDAT 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 AMC1203EVM.

5.1 Isolated Power and Analog Inputs: J1 and J4

The isolated power input to the AMC1203EVM 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 AMC1203 GND1 pin

J1.2 5 V

ISO

Connection to the AMC1203 VDD1 terminal

The analog input to the AMC1203EVM PCB can be applied directly to J4 pins 1 and 2. Table 3 lists the

details of J4.

CAUTION

Carefully review the AMC1203 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 AMC1203

J4.2 CHA– Inverting input to the AMC1203

AMC1203EVM SBAU170–August 2010