DVK90129 Melexis Inc, DVK90129 Datasheet - Page 43

• Manufacturer Part Number: DVK90129
• Description: DEVELOPMENT KIT MLX90129
• Manufacturer: Melexis Inc
• Series: -r
• Type: Development kitr

Specifications of DVK90129

• Contents: Board, Proxima RF™ Desktop Reader
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: MLX90129

9.2.2 Sensors common configuration
The following registers manage the sensor power configuration and the trimming of the internal resistor. This
configuration is applicable for all the sensors.
Sensor’s power configuration words (EEPROM & Register, #12, read / write)
The sensor’s power configuration register allows disabling unused blocks in order to save power.
Sensor’s common configuration words (EEPROM & Register, #13 and #14, read / write)
This EEPROM-word is used to trim the value of the programmable serial resistance connected to the sensor.
Serial resistance Rv1 and Rv2 have the same value. It is also used to program the connection between the
external sensors.
3901090129
Rev 007
#12 – Sensors power configuration word
0
1
2
3
4
5
6
7
8
9
10
11
12
13
15:14
Bits
#13 - Reserved
15:0
#14 – Programmable resistance trimming configuration word (Common for all sensors)
5:0
9:6
15:10
Bits
Name
Sensor_Pga1_En
Sensor_Pga2_En
Sensor_Dac_En
Sensor_Adc_En
Sensor_Reg_En
Sensor_DacBuf_En
Sensor_Bias_En
Sensor_Temp_En
(not used, must be 0)
Sensor_Ats_Pwr_En
(not used, must be 0)
Sensor_Ats_En
(not used, must be 0)
ExtSupplyMode
(not used, must be 0)
Name
Reserved
Sensor_Res_Trim
Melexis calibration: do not change this value
Reserved
Content
Must be filled with 0x0000
Trimming of the programmable resistances Rv1 and Rv2:
Must be filled with 0x0000
Bits[5-0]=0 : the serial resistance is 0.5kΩ
Bit[0]=1 → add 1kΩ to the serial resistance
Bit[1]=1 → add 2kΩ to the serial resistance
Bit[2]=1 → add 4kΩ to the serial resistance
Bit[3]=1 → add 8kΩ to the serial resistance
Bit[4]=1 → add 16kΩ to the serial resistance
Bit[5]=1 → add 32kΩ to the serial resistance
Content
PGA1 enable bit
PGA2 enable bit
DAC enable bit
ADC enable bit
Voltage Regulator enable bit
DAC buffer enable bit
Bias block enable bit
Temperature sensor enable bit
Event detector power-on bit
Event detector enable bit
0: the regulator always supplies the external device
1: the regulator supplies it only in its watchful state (to save power)
13.56MHZ SENSOR TAG / DATALOGGER IC
Page 43 of 56
0= not powered (disabled)
1= powered (enabled)
MLX90129
Data Sheet
March 2011