XE8000EV121 Semtech, XE8000EV121 Datasheet - Page 13

• Manufacturer Part Number: XE8000EV121
• Description: BOARD EVAL FOR SX8723/24
• Manufacturer: Semtech

Specifications of XE8000EV121

• Main Purpose: Interface, Sensor to ADC Interface, Programmable
• Embedded: No
• Utilized Ic / Part: SX8723, SX8724, SX8725
• Primary Attributes: Signal Conditioning for Bridge-Type Sensors
• Secondary Attributes: GUI, Up to 16-Bit, Programmable Gain of 1/12 ~ 1000, I2C Interface
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ADVANCED COMMUNICATIONS & SENSING
3.5 User interface
3.5.1 Analog interface
3.5.2 Digital interface
3.5.3 Gateway control
3.5.4 Onboard optional reference
V1.7 © 2008 Semtech Corp.
VDD
VSS
VSS
then set its own solution using the digital interface pins SDA&SCL (see §3.5.2).
By default, the jumper is not connected.
The “Reset” button allows the user to reset the gateway.
The gateway bypass (br9) jumper allows the user to bypass the onboard PIC16F877A. One can
When connected the br7 jumper powers the onboard optional reference which is then present
on the analog interface.
The reference chip is a Semtech SC431 shunt regulator adjustable from 2.5 to 5.5VDC
It is configured to provide a reference voltage of 2.5V. To set other voltages, please refer to
SC431 datasheet and adjust the reference with R8 & R9 resistors.
VDD
Engineering
Area
Engineering Area
Analog
Connections
Digital Connections
13
The analog interface gives access to the SX8723/24/25
analog pins.
The connections points are available on industrial PCB
terminal blocks and on the bare PCB next to the
engineering area.
SX8723/24/25 Evaluation Tools XE8000EV121
The digital interface gives access to the
SX8723/24/25 digital pins, the PC gateway
connections and the power supplies.
The connections are available on single
row 2.54mm connectors and on the bare
PCB next to the engineering area.
Using the engineering area, one can set its
own
SX8723/24/25 and bypassing the onboard
gateway.
application
only
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Users Guide
using
the