AMC7834 Datasheet, PDF (36/93 Pages) Texas Instruments – AMC7834 12-Bit Integrated Power-Amplifier Monitor and Control System with Temperature, Current and Voltage Supervision Capabilities

AMC7834
SLAS972B – NOVEMBER 2014 – REVISED MARCH 2016
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The two remote temperature sensor results are converted by the device ADC (see the Analog-to-Digital
Converter (ADC) section for more information). The two remote temperature sensors can be disabled in the ADC
MUX register (address 0x12). When disabled, the remote temperature sensor outputs are not converted by the
ADC. The remote temperature values are stored in 12-bit two’s complement format in the RT-data registers
(address 0x2E and 0x2F) using the same data format as the internal temperature sensor (see Table 3).
The AMC7834 device enables optimization of the remote temperature measurements by increasing the update
time. The remote temperature-sensor update time is selected by the RT-SET[2:0] setting in register 0x10.
Table 4 lists the total update time for the two remote temperature sensors with respect to the RT-SET[2:0]
setting.
Table 4. Two Remote Temperature Sensors Update
Time
RT-SET[2:0]
000
001
010
011
100
101
All others
TOTAL UPDATE TIME (ms)
16
16
18
26
50
98
Not valid
Optimal remote temperature sensor accuracy is achieved with the current-sense inputs disabled. In applications
requiring simultaneous current-sensor and remote temperature sensor conversions it is recommended to
implement external remote temperature conversion averaging to attain best accuracy results.
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