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 

ST7DALI

ADC CHARACTERISTICS (Cont’d)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VDD(AMP)

VIN

VOFFSET

VSTEP

Linearity

Gain factor

Amplifier operating voltage

Amplifier input voltage4)

Amplifier output offset voltage5)

Step size for monotonicity3)

Output Voltage Response

Amplified Analog input Gain2)

VDD=3.6V

VDD=5V

VDD=5V

VDD=3.6V

VDD=5V

3.6

5.5

V

0

350

mV

0

500

200

mV

3.5

mV

4.89

Linear

8

Vmax

Vmin

Output Linearity Max Voltage

Output Linearity Min Voltage

VINmax = 430mV,

VDD=5V

3.65

3.94

V

200

mV

Notes:

1) Data based on characterization results over the whole temperature range, not tested in production.

2) For precise conversion results it is recommended to calibrate the amplifier at the following two points:

– offset at VINmin = 0V

– gain at full scale (for example VIN=430mV)

3) Monotonicity guaranteed if VIN increases or decreases in steps of min. 5mV.

4) Please refer to the Application Note AN1830 for details of TE% vs Vin.

5) Refer to the offset variation in temperature below

Amplifier output offset variation

The offset is quite sensitive to temperature varia-

tions. In order to ensure a good reliability in meas-

urements, the offset must be recalibrated periodi-

cally i.e. during power on or whenever the device

is reset depending on the customer application

and during temperature variation. The table below

gives the typical offset variation over temperature:

Typical Offset Variation (LSB)

-45

-20

+25

+90

-12

-7

-

+13

UNIT

°C

LSB

126/141

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