User Guide

PAMS
Technical Documentation
NSE–8/9
System Module
Page 2– 53
Issue 1 07/99
Table 27. ADC reading and NTC resistance vs. temperature
R [k]ADC
read
T [C]R [k]ADC
read
T [C]R [k]ADC
read
T [C]
–25 899 725.7 20 381 59.3 65 88 9.4
–20 860 525.7 25 327 47.0 70 75 7.9
–15 812 385.7 30 279 37.6 75 64 6.7
–10 758 286.2 35 238 30.2 80 55 5.7
–5 698 214.8 40 201 24.5 85 47 4.8
0 634 162.9 45 171 20.0 90 41 4.1
Table 28. Battery voltage, ADC properties
Parameter min typ max Unit Comment
Resolution 10 bits 1024 ADC output values
Conversion error –3.5 0 3.5
C
incl. comp tolerances and +/– 2
LSB,
between – 20 and +70 C
BTEMP voltage range 0 Vref V range given by NTC
voltage @ ADC saturation Vref V ADC reading 1023
BTEMP_adc input range 0.1 Vref V Vref =1.5V +/– 2%
min limit due to CCONT
Un–calibrated ADC read-
ing @25 C
294 327 361
The capacitor C143, is applied to attenuate the noise originated from the
different ground reference points and general TDMA and other noise.
PSCC out voltage
Table 29. PSCC output voltage, ADC properties
Parameter min typ max Unit Comment
Resolution 10 bits 1024 ADC output values
Conversion error 8.6 9.4 10.2 mV corresponding to +/– 2 LSB
PSCC Vchout range 0 3.6 V range given by PSCC
PSCC Vchout voltage @
ADC saturation
4.4 4.8 5.2 V ADC reading 1023
PSCC Vchout ADC resolution 4.3 4.7 5.1 mV/bit
Vbsi_adc input range 0.1 Vref V Vref =1.5V +/– 2%
min limit due to CCONT
Un–calibrated ADC reading
@2.7V no charging current
525 575 625
The capacitor C162, is applied to attenuate the noise originated from the
different ground reference points and general TDMA and other noise.