ST72361J4-AUTO View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST72361J4-AUTO

8-bit MCU for automotive with Flash or ROM, 10-bit ADC, 5 timers, SPI, LINSCI™

STMicroelectronics 

ST72361xx-Auto

Electrical characteristics

1. Data based on characterization results, not tested in production.

2. When VDDA and VSSA pins are not available on the pinout, the ADC refers to VDD and VSS.

Figure 119. RAIN max vs fADC with CAIN = 0pF

45

40

35

30

25

20

15

10

5

0

0

10

30

CPARASITIC (pF)

4 MHz

2 MHz

1 MHz

70

1. CPARASITIC represents the capacitance of the PCB (dependent on soldering and PCB layout quality) plus

the pad capacitance (3pF). A high CPARASITIC value will downgrade conversion accuracy. To remedy this,

fADC should be reduced.

2. Any added external serial resistor will downgrade the ADC accuracy (especially for resistance greater than

10k). Data based on characterization results, not tested in production.

Figure 120. Recommended CAIN/RAIN values

1000

Cain 10 nF

100

Cain 22 nF

Cain 47 nF

10

1

0.1

0.01

0.1

1

10

fAIN(KHz)

1. Figure 143 shows that depending on the input signal variation (fAIN), CAIN can be increased for stabilization

time and reduced to allow the use of a larger serial resistor (RAIN). It is valid for all fADC frequencies 

4 MHz.

Figure 121. Typical application with ADC

VAIN

RAIN

AINx

CAIN

VDD

VT

0.6V

VT

0.6V

ST72XXX

2kmax

10-Bit A/D

Conversion

IL

±1µA

CADC

6pF

Doc ID 12468 Rev 3

253/279

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