ML674001 Просмотр технического описания (PDF) - Oki Electric Industry

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ML674001

32-bit ARM-Based General-Purpose Microcontroller

Oki Electric Industry 

OKI Semiconductor

FEDL674001-01

ML674001/67Q4002/67Q4003

Analog-to-Digital Converter Characteristics

(VDD_CORE = 2.50 V, VDD_IO = 3.3 V, Ta = 25°C)

Item

Symbol

Conditions

Minimum Typical Maximum Unit

Resolution

n

—

—

—

10

bit

Linearity error

EL

—

±3

—

Differential linearity error

Analog input

ED

source impedance

—

±3

—

LSB

Zero scale error

EZS

Ri ≤ 1kΩ

—

±3

—

Full scale error

EFS

—

±3

—

Conversion time

tCONV

—

5

—

—

µs

Throughput

—

10

—

200

kHz

Notes: VDD_IO and AVDD should be supplied separately

• Definition of Terms

(1) Resolution: Minimum input analog value recognized. For 10-bit resolution, this is (VREF –

Aground) ÷ 1024.

(2) Linearity error: Difference between the theoretical and actual conversion characteristics.

(Note that it does not include quantization error.) The theoretical conversion characteristic

divides the voltage range between VREF and AGND into 1024 equal steps.

(3) Differential linearity error: Difference between the theoretical and actual input voltage

change producing a 1-bit change in the digital output anywhere within the conversion range.

This is an indicator of conversion characteristic smoothness. The theoretical value is (VREF –

Aground) ÷ 1024.

(4) Zero scale error: Difference between the theoretical and actual conversion characteristics at

the point where the digital output switches from “0x000” to “0x001.”

(5) Full scale error: Difference between the theoretical and actual conversion characteristics at

the point where the digital output switches from “0x3FE” to “0x3FF.”

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