ADC 6021 Dokumentacja Pobierz pdf (Strona 80)

MYXPM6021*

Revision 1.1 - 10/21/14

*Advanced information. Subject to change without notice.

MYXPM6021*

Form #: CSI-D-685 Document 011

13 Analog–to–Digital Converter

A general purpose analog-to-digital converter (GPADC) provides measurements of various voltages, currents and

temperatureswithinthedevice.Thereisone10-bitADCwhichistime-divisionmultiplexedtoperformthemeasurements

ofthevariousparameters.TheGPADCcontainsthe10-bitADC,theanaloginputchannelmultiplexerandsomeadditional

analogfunctions.

13.1 Electrical Characteristics

Table 50: ADC Electrical Charakteristics

Parameter Symbol Test Conditions Min Typ Max Unit

ADC Resolution 10 bit

Absolute Accuracy 12 15 mV

Integral Non-Linearity INL +/- 2 LSB

Differential Non-Linearity DNL +/- 0.8 LSB

ADC Supply Voltage 2.5 V

ADC Reference Voltage VADC_REF VDD_CORE 2.5 V

ADC Operating Current During conversion 100 μA

Power Down Current 1 μA

ADC Clock 1 MHz

Auto-Zero Time 3 us

Total Sampling Time Including the Auto-

Zero time

10 us

Conversion Time 11 us

Total ADC Conversion Time 21 us

Maximum Source Impedance R

RS is the impedance

of the external source

sampled by the ADC

120 kΩ

Internal Mux Resistance R

INT

5 kΩ

Internal Sampling Capacitor C

10 pF

Total Input Capacitance C

INT

Parasitic and pad

capacitance included

11 pF

Acquisition Time ~7t = 7 x (RS +

RINT) x CINT

10 us

VSYS Voltage Range / Channel

A0 /

ADC=[(VSYS-2.5) x

0.5] x 1023

gain = 0.8

2.5 5.5 V

1 2 ... 75 76 77 78 79 80 81 82 83 84 85 ... 112 113

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