ADC 6021 Specifiche Scaricare il pdf (Pagina 81)

MYXPM6021*

Revision 1.1 - 10/21/14

*Advanced information. Subject to change without notice.

MYXPM6021*

Form #: CSI-D-685 Document 011

Parameter Symbol Test Conditions Min Typ Max Unit

ADC_IN1÷3 Voltage Range

/ channels A1, A2, A3 /

ADC=[VIN / 2.5] x 1023

gain = 1.0

0 2.5 V

Internal Temp. Sensor Voltage

/ channel A4 /

ADC=[1 – 1.2 x VTJ]

x 1023

gain = 3.0

0 0.833 V

VBBAT Voltage Range

/ channel A5 /

ADC=[1 - 0.2 x VBBAT]

x 1023

gain = 0.5

0 5 V

Inter Channel Isolation 80dB for channel A3

(ADC_IN6)

60 dB

Regulator OV/UV monitoring

Channel A8 ÷ A10

Gain =0.5 0 5.5 V

13.2 Analog Overview

The AD conversion is of successive approximation type using sample and hold. It has a resolution of 10 bits and a

conversioncycleof21clockcyclesincludinganauto-zerophase(23cyclesconsumedback-to-back).TheGPADCis

suppliedfromthe same supply, VDDCORE,as the digital block.If unused, the GPADC can bedisabledto reduceits

powerconsumptionbyafactoraround100.

TheGPADChasananaloginputmultiplexerwith16inputchannels.

Table 51: ADC Channel Overview

CH Description Signal Name Measurement

Range

Condition Comment ADC Value Gain

0 Battery Voltage, VBAT

(Pin:IBATSENSE)

VREG 0.0V..

5.0V

Yes 0.5*

Vin/VLP*1 023

0.5

1 Battery ID

(Pin: BATID)

ADCIN1 0.0V ..

VLP

No VREFB needs to be switched on

1ms prior to ADC measurement.

VREFB needs to stay on when battery

removal has to be detected by the

VBATID Comparator.

Vin/VREF

B*1023

2 MYXPM6021 Die

Temperature (no pin)

vbe_ADC/

adc_temp

0.0V ..

VLP/3

Yes 3* Vin/VLP

*1023

3 Battery Pack Temp 0

(Pin: BPTHERM0)

ADCIN2 0.0V ..

VLP

No VREFT needs to be switched on 1ms

prior to ADC measurement.

Vin/VREF T

*1023

4 Battery Pack Temp 1

(Pin: BPTHERM1)

ADCIN3 0.0V ..

VLP

No Vin/VREF

T*1023

5 System Temp 0

(Pin: SYSTHERM0)

ADCIN4 0.0V ..

VLP

No Vin/VREF

T*1023

Table50:ADCElectricalCharakteristics(continued)

1 2 ... 76 77 78 79 80 81 82 83 84 85 86 ... 112 113

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