XE8000EV120 Semtech, XE8000EV120 Datasheet - Page 2

• Manufacturer Part Number: XE8000EV120
• Description: BOARD EVAL FOR SX8722I070TRLF
• Manufacturer: Semtech
• Series: ZoomingADC™r

Specifications of XE8000EV120

• Number Of Adc's: 1
• Number Of Bits: 16
• Data Interface: I²C
• Inputs Per Adc: 7 Single or 4 Differential
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 125°C
• Utilized Ic / Part: SX8722
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: XM8000EV120; XM8000EV120

Section
1.
2.
3.
4.
5.
6.
7.
8.
9.
ACS - Revision 4.2
©2008 Semtech Corp.
ADVANCED COMMUNICATIONS & SENSING
Table of contents
1.1.
1.2.
1.3.
2.1.
2.2.
4.1.
4.2.
4.3.
4.4.
4.5.
5.1.
5.2.
5.3.
6.1.
6.2.
8.1.
8.2.
8.3.
8.4.
8.5.
8.6.
9.1.
9.2.
9.3.
9.4.
Specifications........................................................................................................................................................... 6
Pin configuration and marking information ............................................................................................................ 10
Pin Description....................................................................................................................................................... 11
Timing Characteristics ........................................................................................................................................... 13
Circuit description .................................................................................................................................................. 16
Access the SX8722 ............................................................................................................................................... 20
I2C Commands...................................................................................................................................................... 20
Serial communication ............................................................................................................................................ 21
Predefined settings ................................................................................................................................................ 24
9.3.1.
9.3.2.
9.3.3.
9.3.4.
9.4.1.
Absolute Maximum Ratings ............................................................................................................................. 6
Operating conditions ........................................................................................................................................ 6
ZoomingADC Specifications ............................................................................................................................ 7
Pin configuration ............................................................................................................................................ 10
Marking information ....................................................................................................................................... 10
I2C timing Waveforms.................................................................................................................................... 13
Time specification without the 32.768 kHz Xtal ............................................................................................. 14
Start-up time with the 32.768 kHz Xtal presence........................................................................................... 14
Changing power mode by pin signal.............................................................................................................. 14
Changing power mode by I2C command....................................................................................................... 15
Detailed bloc diagram .................................................................................................................................... 16
Functional description .................................................................................................................................... 16
ZoomingADC ................................................................................................................................................. 19
Description ..................................................................................................................................................... 20
SX8722 configuration..................................................................................................................................... 20
Write data direct............................................................................................................................................. 21
Write data masked ......................................................................................................................................... 22
Read data ...................................................................................................................................................... 22
Other commands ........................................................................................................................................... 23
Unknown commands ..................................................................................................................................... 23
Reading data after a measurement. .............................................................................................................. 23
Introduction .................................................................................................................................................... 24
Features covered by predefined settings....................................................................................................... 24
Input multiplexers........................................................................................................................................... 25
Programmable gain amplifier settings............................................................................................................ 28
Overview ................................................................................................................................................. 25
Input channel selection ........................................................................................................................... 25
Reference channel selection................................................................................................................... 26
Application example................................................................................................................................ 26
Overview ................................................................................................................................................. 28
October 2008
Page 2
High gain acquisition for sensor interface
DATASHEET
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SX8722
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