ST72325J4B5 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST72325J4B5

8-BIT MCU WITH 16 TO 60K FLASH/ROM, ADC, CSS, FIVE TIMERS, SPI, SCI, I2C INTERFACE

STMicroelectronics 

ST72325

12.12 10-BIT ADC CHARACTERISTICS

Subject to general operating conditions for VDD, fCPU, and TA unless otherwise specified.

Symbol

fADC

VAREF

VAIN

Ilkg

RAIN

CAIN

fAIN

CADC

tADC

tADC

Parameter

Conditions

ADC clock frequency

Analog reference voltage

Conversion voltage range 1)

0.7*VDD ≤VAREF ≤VDD

Positive input leakage current for analog

input

Negative input leakage current on ro-

bust analog pins

-40°C≤TA≤85°C range

Other TA ranges

VIN<VSS, | IIN |< 400µA

on adjacent robust ana-

log pin

External input impedance

External capacitor on analog input

Variation freq. of analog input signal

Internal sample and hold capacitor

Conversion time (Sample+Hold)

fCPU=8MHz, SPEED=0 fADC=2MHz

- No of sample capacitor loading cycles

- No. of Hold conversion cycles

Min

0.4

3.8

VSSA

Typ

Max

Unit

2

MHz

VDD

V

VAREF

±250

nA

±1

µA

5

6

µA

see

kΩ

Figure 94 pF

and

Figure 95 Hz

12

pF

7.5

µs

4

11

1/fADC

Notes:

1. Any added external serial resistor will downgrade the ADC accuracy (especially for resistance greater than 10kΩ). Data

based on characterization results, not tested in production.

169/193

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