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Rainbow-electronics ADC1001 Manual de usuario Pagina 1

Busca en linea o descarga Manual de usuario para Sensores Rainbow-electronics ADC1001. Rainbow Electronics ADC1001 User Manual Manual de usuario

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TL/H/5675
ADC1001 10-Bit mP Compatible A/D Converter
December 1994
ADC1001 10-Bit mP Compatible A/D Converter
General Description
The ADC1001 is a CMOS, 10-bit successive approximation
A/D converter. The 20-pin ADC1001 is pin compatible with
the ADC0801 8-bit A/D family. The 10-bit data word is read
in two 8-bit bytes, formatted left justified and high byte first.
The six least significant bits of the second byte are set to
zero, as is proper for a 16-bit word.
Differential inputs provide low frequency input common
mode rejection and allow offsetting the analog range of the
converter. In addition, the reference input can be adjusted
enabling the conversion of reduced analog ranges with 10-
bit resolution.
Features
Y
ADC1001 is pin compatible with ADC0801 series 8-bit
A/D converters
Y
Compatible with NSC800 and 8080 mP derivativesÐno
interfacing logic needed
Y
Easily interfaced to 6800 mP derivatives with minimal
external logic
Y
Differential analog voltage inputs
Y
Logic inputs and outputs meet both MOS and TTL volt-
age level specifications
Y
Works with 2.5V (LM336) voltage reference
Y
On-chip clock generator
Y
0V to 5V analog input voltage range with single 5V sup-
ply
Y
Operates ratiometrically or with 5 V
DC
, 2.5 V
DC
, or ana-
log span adjusted voltage reference
Y
0.3
×
standard width 20-pin DIP package
Key Specifications
Y
Resolution 10 bits
Y
Linearity error
g
1 LSB
Y
Conversion time 200mS
Connection Diagram
ADC1001 (for an 8-bit data bus)
Dual-In-Line Package
TL/H/5675–11
Top View
Ordering Information
Temperature Range 0
§
Cto
a
70
§
C
b
40
§
Cto
a
85
§
C
Order Number ADC1001CCJ-1 ADC1001CCJ
Package Outline J20A J20A
TRI-STATE
É
is a registered trademark of National Semiconductor Corp.
C
1995 National Semiconductor Corporation RRD-B30M115/Printed in U. S. A.
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Indice de contenidos

Pagina 1 - Ordering Information

TL/H/5675ADC1001 10-Bit mP Compatible A/D ConverterDecember 1994ADC1001 10-Bit mP Compatible A/D ConverterGeneral DescriptionThe ADC1001 is a CMOS, 10

Pagina 2 - AC Electrical Characteristics

Absolute Maximum Ratings (Notes1&2)If Military/Aerospace specified devices are required,please contact the National Semiconductor SalesOffice/Dist

Pagina 3 - DC Electrical Characteristics

DC Electrical CharacteristicsThe following specifications apply for VCCe5VDCand TMINsTAsTMAX, unless otherwise specified.Symbol Parameter Conditions M

Pagina 4 - TL/H/5675–2

Typical Performance CharacteristicsLogic Input ThresholdVoltage vs Supply VoltageDelay From Falling Edge ofRDto Output Data Validvs Load CapacitanceCL

Pagina 5 - Timing Diagrams

Timing DiagramsTL/H/5675–7Output Enable and Reset INTRTL/H/5675–8Note: All timing is measured from the 50% voltage points.BYTE SEQUENCING FOR THE 20-P

Pagina 6 - Functional Description

Functional DescriptionThe ADC1001 uses an advanced potentiometric resistiveladder network. The analog inputs, as well as the taps ofthis ladder networ

Pagina 7 - Block Diagram

Typical ApplicationTL/H/5675–1Block DiagramNote 1: CS shown twice for clarity. TL/H/5675–13Note 2: SAReSuccessive Approximation Register. FIGURE 17

Pagina 8

ADC1001 10-Bit mP Compatible A/D ConverterPhysical Dimensions inches (millimeters)Cavity Dual-In-Line Package (J) (Side Brazed)Order Number ADC1001CCJ

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