XE8000EV121 Semtech, XE8000EV121 Datasheet - Page 18
![BOARD EVAL FOR SX8723/24](/photos/9/5/90595/xe8000ev121_sml.jpg)
XE8000EV121
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
SX8725
ZoomingADC™ for Pressure and Temperature Sensing
ADVANCED COMMUNICATIONS & SENSING
ZADC Detailed Functionality Description
Continuous-Time vs. On-Request
The ADC can be operated in two distinct modes: "continuous-time" and "on-request" modes (selected using the
bit CONT).
In "continuous-time" mode, the input signal is repeatedly converted into digital. After a conversion is finished, a
new one is automatically initiated. The new value is then written in the result register, and the corresponding
internal trigger pulse is generated. This operation is sketched in Figure 9. The conversion time in this case is
defined as T
.
CONV
T
CONV
Internal Trig
Output Code
RegACOut[15:0]
BUSY
IRQ/READY
Figure 9 - ADC "Continuous-Time" Operation
In the "on-request" mode, the internal behavior of the converter is the same as in the "continuous-time" mode,
but the conversion is initiated on user request (with the START bit). As shown in Figure 10, the conversion time
is also T
.
CONV
Figure 10 - ADC "On-Request" Operation
V1.8 © 2009 Semtech Corp.
www.semtech.com
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