XE8000EV120 Semtech, XE8000EV120 Datasheet - Page 54

• 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

12.4. ZoomingADC register map
There are six registers in the acquisition chain (AC), namely CxZadcReg1, CxZadcReg2, CxZadcReg3, CxZadcReg4,
CxZadcReg5 and CxZadcReg6. Tables below shows the mapping of control bits and functionality of these registers while
Table 33 gives an overview of these six.
The register map only gives a short description of the different configuration bits. More detailed information is found in
subsequent sections.
ACS - Revision 4.2
©2008 Semtech Corp.
ADVANCED COMMUNICATIONS & SENSING
Bit
6:5
4:2
Bit
7:6
5:4
3:0
7
1
0
SET_NELCONV [1:0]
IB_AMP_ADC[1:0]
IB_AMP_PGA[1:0]
SET_OSR [2:0]
CxZadcReg1
CxZadcReg2
ENABLE[3:0]
Table 34. CxZadcReg1; addresses 0x0A - 0x2A - 0x4A - 0x6A
Table 35. CxZadcReg2; addresses 0x0B - 0x2B - 0x4B - 0x6B
reserved
reserved
reserved
October 2008
CxZadcReg1
CxZadcReg2
CxZadcReg3
CxZadcReg4
CxZadcReg5
CxZadcReg6
Registers
Table 33. ADC settings registers
rw
rw
rw
rw
rw
rw
rw
rw
rw
rw
Reset
Reset
0000
010
01
11
11
0
0
0
0x0C - 0x2C - 0x4C - 0x6C
0x0D - 0x2D - 0x4D - 0x6D
0x0A - 0x2A - 0x4A - 0x6A
0x0B - 0x2B - 0x4B - 0x6B
0x0E - 0x2E - 0x4E - 0x6E
0x0F - 0x2F - 0x4F - 0x6F
Page 54
Sets the number of elementary conversions
sets the oversampling rate of an elementary conversion
Bias current selection of the A/D converter
Bias current selection of the PGA stages
Enabled the different PGA stages and the ADC
Addresses
High gain acquisition for sensor interface
Description
Description
DATASHEET
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SX8722