ST7FDALI View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST7FDALI

8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI, DALI

STMicroelectronics 

ADC CHARACTERISTICS (Cont’d)

Figure 93. ADC Accuracy Characteristics with amplifier enabled

ST7DALI

Digital Result ADCDR

704

1LSBIDEAL

=

V-----D-----D-----–-----V----S-----S--

1024

(2)

ET

EO

EL

108

1 LSBIDEAL

0

1234567

VSS62.5mV

EG

(1) Example of an actual transfer curve

(2) The ideal transfer curve

(3) End point correlation line

(3)

(1)

ED

ET=Total Unadjusted Error: maximum deviation

between the actual and the ideal transfer curves.

EO=Offset Error: deviation between the first actual

transition and the first ideal one.

EG=Gain Error: deviation between the last ideal

transition and the last actual one.

ED=Differential Linearity Error: maximum deviation

between actual steps and the ideal one.

EL=Integral Linearity Error: maximum deviation

between any actual transition and the end point

correlation line.

701 702 703 704

430mV

Vin (LSBIDEAL)

Vin (OPAMP)

Note: When the AMPSEL bit in the ADCDRL register is set, it is mandatory that fADC be less than or equal

to 2 MHz. (if fCPU=8MHz. then SPEED=0, SLOW=1).

Vout (ADC input)

Vmax

Vmin

0V

Noise

430mV

Vin

(OPAMP input)

125/141

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