ML9227 データシートの表示（PDF） - Oki Electric Industry

部品番号

コンポーネント説明

メーカー

ML9227

27-Bit Duplex/Triplex VFD Controller/Driver with Digital Dimming, ADC and Key scan

Oki Electric Industry 

OKI Semiconductor

FEDL9227-01

ML9227

A/D Converter Characteristics

Parameter

Reference Voltage (VREG)

Output Current

Input Voltage Range

Conversion Time/Channel

Resolution

Linearity error

Differentiation linearity error

Zero scale error

Full-scale error

Condition

—

—

—

R = 10 kΩ ±5%, C2 = 27 pF ±5%

(Ta = –40 to +85°C, VDISP = 8.0 to 18.5 V)

Min.

Typ.

Max.

Unit

4.5

5.0

5.5

V

—

—

–10

mA

GND

—

VREG

V

256

310

394

µs

—

—

8

bit

—

—

±2.0

LSB

—

—

±2.0

LSB

—

—

+2.0

LSB

—

—

-2.0

LSB

Terminological definition

Resolution

Linearity error

Differentiation

linearity error

Zero scale error

Full scale error

The minimum input analog value which can be recognized. It can

decompose into 28= 256,(VRH-VRL)/256,in 8 bits.

The deviation between the ideal conversion characteristic as a 8-bit

A/D converter and the actual conversion characteristic is said.

(Therefore, a quantization error is not included.) The ideal

conversion characteristic means the step which divided the voltage

between VRH to VRL into 256 division into equal parts.

The smoothness of the conversion characteristic is shown, and

ideally, the width of the analog input voltage corresponding to

change for 1 bit of digital outputs is 1LSB= (VRH-VRL)/256, and says

the deviation of this ideal bit size and the bit size in the arbitrary

points of the conversion range.

Digital output "000H" to "001H" changes, and the deviation of the

ideal conversion characteristic of a point and the actual conversion

characteristic is said.

Digital output "0FEH" to "0FFH" changes, and the deviation of the

ideal conversion characteristic of a point and the actual conversion

characteristic is said.

10/26

Share Link: