AMC1204EVM Datasheet, PDF (4/9 Pages) Texas Instruments – Full-featured evaluation module

Power-Supplies
www.ti.com
4 Power-Supplies
J2 provides access to the +5 VA for the V_DD2 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
Ground
4.5 to 5.5 V_DD2 supply
Ground
CLKIN default
Optional DATA output
Pin Number
1
2
3
4
5
6
7
8
9
Signal
Not used
Not used
Optional CLKIN output
DATA default
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
J1.1
J1.2
Signal
ISOGND
5 V_ISO
Description
Connection to the AMC1204 GND1 pin
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.
Pin Number
J4.1
J4.2
Table 3. J4: Analog Inputs
Signal
CHA+
CHA–
Description
Noninverting analog input to the AMC1204
Inverting input to the AMC1204
4
AMC1204EVM
Copyright © 2010, Texas Instruments Incorporated
SBAU178 – August 2010