LMP90100MHE National Semiconductor, LMP90100MHE Datasheet - Page 48

• Manufacturer Part Number: LMP90100MHE
• Description: AFE, SENSOR, 28TSSOP
• Manufacturer: National Semiconductor

Specifications of LMP90100MHE

• Brief Features: 24bit Low Power Sigma Delta ADC, Automatic Channel Sequencer
• Supply Voltage Range: 2.7V To 5.5V
• Operating Temperature Range: -40°C To +105°C
• Digital Ic Case Style: TSSOP
• No. Of Pins: 28
• Base: RoHS Compliant
• Ic Function: Multi-Channel, Low Power 24-bit Sensor AFE
• Rohs Compliant: Yes

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18.3 ADC Registers
ADC_RESTART: ADC Restart Conversion (Address 0x0B)
14.2.1. ADC_AUXCN: ADC Auxiliary Control (Address 0x12)
ADC_DONE: ADC Data Available (Address 0x18)
[7:1] Reserved
[3:0] RTD_CUR_SEL
[7:0] DT_AVAIL_B
Bit Bit Symbol
Bit Bit Symbol
Bit Bit Symbol
0
7
6
5
4
RESTART
Reserved
RESET_SYSCAL
CLK_EXT_DET
CLK_SEL
Bit Description
-
Restart conversion
1: Restart conversion.
Bit Description
-
The System Calibration registers (CHx_SCAL_OFFSET and CHx_SCAL_GAIN) are:
0 (default): preserved even when "REG_AND_CNV_ RST" = 0xC3.
1: reset by setting "REG_AND_CNV_ RST" = 0xC3.
External clock detection
0 (default): "External Clock Detection" is operational
1: "External-Clock Detection" is bypassed
Clock select – only valid if CLK_EXT_DET = 1
0 (default): Selects internal clock
1: Selects external clock
Selects RTD Current as follows:
0x0 (default): 0 µA
0x1: 100 µA
0x2: 200 µA
0x3: 300 µA
0x4: 400 µA
0x5: 500 µA
0x6: 600 µA
0x7: 700 µA
0x8: 800 µA
0x9: 900 µA
0xA: 1000 µA
Bit Description
Data Available – indicates if new conversion data is available
0x00 − 0xFE: Available
0xFF: Not available
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