ML2282CIP datasheet(3/26 Pages) MICRO-LINEAR

部品番号	ML2282CIP

部品情報	Serial I/O 8-Bit A/D Converters with Multiplexer Options

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メーカー	MICRO-LINEAR [Micro Linear Corporation]

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ML2281, ML2282, ML2284, ML2288

3

NAME

FUNCTION

VCC

Positive supply. 5V ± 10%

DGND

Digital ground. 0 volts. All digital inputs and

outputs are referenced to this point.

AGND

Analog ground. The negative reference voltage

for A/D converter.

CH0-7,

Analog inputs. Digitally selected to be single

VIN+, VIN– ended (VIN) or; VIN+ or VIN– of a differential

input. Analog range = GND - VIN - VCC.

COM

Common reference point for analog inputs.

A/D conversion is performed on voltage

difference between analog input and this

common reference point if single-end

conversion is specified.

VREF

Reference. The positive reference voltage for

A/D converter.

SE

Shift enable. Input controls whether LSB first

bit stream is shifted out on serial output DO.

If SE = 1, MSB first is shifted out only. If SE = 0,

an MSB first bit stream is shifted out, then a

second bit stream with LSB first is shifted out

after end of conversion.

V+

Input to the Shunt Regulator.

PIN DESCRIPTION

NAME

FUNCTION

DO

Data out. Digital output which contains result

of A/D conversion. The serial data is clocked

out on falling edges of CLK.

SARS

Successive approximation register status.

Digital output which indicates that a

conversion is in progress. When SARS goes

to 1, the sampling window is closed and

conversion begins. When SARS goes to 0,

conversion is completed. When CS = 1, SARS

is in high impedance state.

CLK

Clock. Digital input which clocks data in on

DI on rising edges and out on DO on falling

edges. Also used to generate clocks for A/D

conversion.

DI

Data input. Digital input which contains serial

data to program the MUX and channel

assignments.

CS

Chip select. Selects the chip for multiplexer

and channel assignment and A/D conversion.

When CS = 1, all digital outputs are in high

impedance state. When CS = 0, normal A./D

conversion takes place.

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