Rainbow-electronics ADC10738 Bedienungsanleitung

Stöbern Sie online oder laden Sie Bedienungsanleitung nach Sensoren Rainbow-electronics ADC10738 herunter. Rainbow Electronics ADC10738 User Manual Benutzerhandbuch

  • Herunterladen
  • Zu meinen Handbüchern hinzufügen
  • Drucken
  • Seite
    / 30
  • Inhaltsverzeichnis
  • LESEZEICHEN
  • Bewertet. / 5. Basierend auf Kundenbewertungen
Seitenansicht 0
TL/H/11390
ADC10731/ADC10732/ADC10734/ADC10738 10-Bit Plus Sign Serial I/O
A/D Converters with Mux, Sample/Hold and Reference
December 1994
ADC10731/ADC10732/ADC10734/ADC10738
10-Bit Plus Sign Serial I/O A/D Converters
with Mux, Sample/Hold and Reference
General Description
This series of CMOS 10-bit plus sign successive approxima-
tion A/D converters features versatile analog input multi-
plexers, sample/hold and a 2.5V band-gap reference. The
1-, 2-, 4-, or 8-channel multiplexers can be software config-
ured for single-ended or differential mode of operation.
An input sample/hold is implemented by a capacitive refer-
ence ladder and sampled-data comparator. This allows the
analog input to vary during the A/D conversion cycle.
In the differential mode, valid outputs are obtained even
when the negative inputs are greater than the positive be-
cause of the 10-bit plus sign output data format.
The serial I/O is configured to comply with the NSC
MICROWIRE
TM
serial data exchange standard for easy in-
terface to the COPS
TM
and HPC
TM
families of controllers,
and can easily interface with standard shift registers and
microprocessors.
Applications
Y
Medical instruments
Y
Portable and remote instrumentation
Y
Test equipment
Features
Y
0V to 5V analog input range with single 5V power
supply
Y
Serial I/O (MICROWIRE compatible)
Y
1-, 2-, 4-, or 8-channel differential or single-ended
multiplexer
Y
Software or hardware power down
Y
Analog input sample/hold function
Y
Ratiometric or absolute voltage referencing
Y
No zero or full scale adjustment required
Y
No missing codes over temperature
Y
TTL/CMOS input/output compatible
Y
Standard DIP and SO packages
Key Specifications
Y
Resolution 10 bits plus sign
Y
Single supply 5V
Y
Power dissipation 37 mW (Max)
Ð In powerdown mode 18 mW
Y
Conversion time 5 ms (Max)
Y
Sampling rate 74 kHz (Max)
Y
Band-gap reference 2.5V
g
2% (Max)
ADC10738 Simplified Block Diagram
TL/H/113901
COPS
TM
, HPC
TM
and MICROWIRE
TM
are trademarks of National Semiconductor Corporation.
C
1995 National Semiconductor Corporation RRD-B30M75/Printed in U. S. A.
Seitenansicht 0
1 2 3 4 5 6 ... 29 30

Inhaltsverzeichnis

Seite 1 - Key Specifications

TL/H/11390ADC10731/ADC10732/ADC10734/ADC10738 10-Bit Plus Sign Serial I/OA/D Converters with Mux, Sample/Hold and ReferenceDecember 1994ADC10731/ADC10

Seite 2 - Ordering Information

Leakage Current Test CircuitTL/H/11390–9Typical Performance Characteristicsvs TemperatureAnalog Supply Current (IAa)vs Clock FrequencyAnalog Supply Cu

Seite 3 - Electrical Characteristics

Typical Performance Characteristics (Continued)vs Clock FrequencyLinearity Errorvs Reference VoltageLinearity Errorvs TemperatureLinearity Errorvs Inp

Seite 4 - Error V

TRI-STATE Test Circuits and WaveformsTL/H/11390–10TL/H/11390–11TL/H/11390–12TL/H/11390–13Timing DiagramsTL/H/11390–14FIGURE 2. DI TimingTL/H/11390–15F

Seite 5

Timing Diagrams (Continued)TL/H/11390–16FIGURE 4. Delayed DO TimingTL/H/11390–17FIGURE 5. Hardware Power Up/Down SequenceTL/H/11390–18FIGURE 6. Softwa

Seite 6

Timing Diagrams (Continued)TL/H/11390–19Note: If CS is low during power up of the power supply voltages (AVaand DVa) then CS needs to go high for tCS(

Seite 7

Timing Diagrams (Continued)TL/H/11390–20FIGURE 8. ADC10732, ADC10734 and ADC10738 CS Low during ConversionNote: If CS is low during power up of the po

Seite 8

Timing Diagrams (Continued)TL/H/11390–21FIGURE 9. ADC10731 Using CS to Delay Output of Data afer a Conversion has CompletedNote: If CS is low during p

Seite 9

Timing Diagrams (Continued)TL/H/11390–22FIGURE 10. ADC10732, ADC10734 and ADC10738 Using CS to Delay Output of Data after a Conversion has CompletedNo

Seite 10 - Leakage Current Test Circuit

TABLE I. ADC10738 Multiplexer Address AssignmentMUX Address Channel NumberMODEMUXMA0 MA1 MA2 MA3 MA4CH0 CH1 CH2 CH3 CH4 CH5 CH6 CH7 COMPUSING/ ODD/SEL

Seite 11 - TL/H/11390–24

Pin DescriptionsCLK The clock applied to this input controls the suc-cessive approximation conversion time interval,the acquisition time and the rate

Seite 12 - Timing Diagrams

Connection Diagrams for Dual-In-Line and SO PackagesTL/H/11390–2Top ViewSee NS Package Number N16E or M16BTL/H/11390–3Top ViewSee NS Package Number N2

Seite 13 - Timing Diagrams (Continued)

Applications HintsThe ADC10731/2/4/8 use successive approximation todigitize an analog input voltage. The DAC portion of the A/Dconverters uses a capa

Seite 14

Applications Hints (Continued)TL/H/11390–28FIGURE 11. Detailed Diagram of the ADC10738 DAC and Analog Multiplexer Stages21

Seite 15

Applications Hints (Continued)3.0 APPLICATIONS INFORMATION3.1 Multiplexer ConfigurationThe design of these converters utilizes a sampled-datacomparato

Seite 16

Applications Hints (Continued)4 Single-Ended 2 Differential4 Psuedo-Differential2 Single-Endedand 1 DifferentialTL/H/11390–27FIGURE 12. Analog Input M

Seite 17

Applications Hints (Continued)3.4 Optional Adjustments3.4.1 Zero ErrorThe zero error of the A/D converter relates to the locationof the first riser of

Seite 18

Applications Hints (Continued)(R1aR2)//R3s1kTL/H/11390–31Note 1: Diodes are 1N914.Note 2: The protection diodes should be able to withstand the output

Seite 20 - Applications Hints

Physical Dimensions inches (millimeters)Order Number ADC10731CIWMNS Package Number M16BOrder Number ADC10732CIWM and ADC10734CIWMNS Package Number M20

Seite 21 - (Continued)

Physical Dimensions inches (millimeters) (Continued)Order Number ADC10738CIWMNS Package Number M24BOrder Number ADC10734CIMSANS Package Number MSA2028

Seite 22 - (Figure 13b)

Physical Dimensions inches (millimeters) (Continued)Order Number ADC10731CINNS Package Number N16EOrder Number ADC10732CIN and ADC10734CINNS Package N

Seite 23 - TL/H/11390–30

Absolute Maximum Ratings (Notes1&3)If Military/Aerospace specified devices are required,please contact the National Semiconductor SalesOffice/Dist

Seite 24 - Figure 14

ADC10731/ADC10732/ADC10734/ADC10738 10-Bit Plus Sign Serial I/OA/D Converters with Mux, Sample/Hold and ReferencePhysical Dimensions inches (millimete

Seite 25 - TL/H/11390–32

Electrical Characteristics (Continued)The following specifications apply for VaeAVaeDVaea5.0 VDC,VREFae2.5 VDC,VREFbeGND, VINbe2.5V forSigned Characte

Seite 26

Electrical Characteristics (Continued)The following specifications apply for VaeAVaeDVaea5.0 VDC,VREFae2.5 VDC,VREFbeGND, VINbe2.5V forSigned Characte

Seite 27

Electrical Characteristics (Continued)The following specifications apply for VaeAVaeDVaea5.0 VDC,VREFae2.5 VDC,VREFbeGND, VINbe2.5V forSigned Characte

Seite 28

Electrical Characteristics (Continued)The following specifications apply for VaeAVaeDVaea5.0 VDC,VREFae2.5 VDC,VREFbeGND, VINbe2.5V forSigned Characte

Seite 29

Electrical Characteristics (Continued)Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.Note 2: Operating R

Seite 30

Electrical Characteristics (Continued)TL/H/11390–8FIGURE 1A. Transter CharacteristicTL/H/11390–26FIGURE 1B. Simplified Error Curve vs Output Code9

Kommentare zu diesen Handbüchern

Keine Kommentare