ADC0816CJ National Semiconductor, ADC0816CJ Datasheet

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ADC0816CJ

Manufacturer Part Number
ADC0816CJ
Description
IC ADC 8BIT W/16CH MUX 40-DIP
Manufacturer
National Semiconductor
Datasheet

Specifications of ADC0816CJ

Number Of Bits
8
Sampling Rate (per Second)
10k
Data Interface
Parallel
Number Of Converters
1
Power Dissipation (max)
875mW
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 85°C
Mounting Type
Through Hole
Package / Case
40-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
*ADC0816CJ

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© 1997 National Semiconductor Corporation
ADC0816/ADC0817
8-Bit µP Compatible A/D Converters with 16-Channel
Multiplexer
General Description
The ADC0816, ADC0817 data acquisition component is a
monolithic CMOS device with an 8-bit analog-to-digital con-
verter, 16-channel multiplexer and microprocessor compat-
ible control logic. The 8-bit A/D converter uses successive
approximation as the conversion technique. The converter
features a high impedance chopper stabilized comparator, a
256R voltage divider with analog switch tree and a succes-
sive approximation register. The 16-channel multiplexer can
directly access any one of 16-single-ended analog signals,
and provides the logic for additional channel expansion. Sig-
nal conditioning of any analog input signal is eased by direct
access to the multiplexer output, and to the input of the 8-bit
A/D converter.
The device eliminates the need for external zero and
full-scale adjustments. Easy interfacing to microprocessors
is provided by the latched and decoded multiplexer address
inputs and latched TTL TRI-STATE
The design of the ADC0816, ADC0817 has been optimized
by incorporating the most desirable aspects of several A/D
conversion techniques. The ADC0816, ADC0817 offers high
speed, high accuracy, minimal temperature dependence, ex-
cellent long-term accuracy and repeatability, and consumes
minimal power. These features make this device ideally
suited to applications from process and machine control to
consumer and automotive applications. For similar perfor-
mance in an 8-channel, 28-pin, 8-bit A/D converter, see the
ADC0808, ADC0809 data sheet. (See AN-258 for more in-
formation.)
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
DS005277
®
outputs.
Features
n Easy interface to all microprocessors, or operates “stand
n Operates ratiometrically or with 5 V
n 16-channel multiplexer with latched control logic
n Outputs meet TTL voltage level specifications
n 0V to 5V analog input voltage range with single 5V
n No zero or full-scale adjust required
n Standard hermetic or molded 40-pin DIP package
n Temperature range −40˚C to +85˚C or −55˚C to +125˚C
n Latched TRI-STATE output
n Direct access to “comparator in” and “multiplexer out” for
n ADC0816 equivalent to MM74C948
n ADC0817 equivalent to MM74C948-1
Key Specifications
n Resolution:
n Total Unadjusted Error:
n Single Supply: 5 V
n Low Power: 15 mW
n Conversion Time: 100 µs
alone”
adjusted voltage reference
supply
signal conditioning
8 Bits
DC
±
1
2
LSB and
DC
or analog span
±
1 LSB
December 1994
www.national.com

Related parts for ADC0816CJ

ADC0816CJ Summary of contents

Page 1

... For similar perfor- mance in an 8-channel, 28-pin, 8-bit A/D converter, see the ADC0808, ADC0809 data sheet. (See AN-258 for more in- formation.) TRI-STATE ® registered trademark of National Semiconductor Corporation. © 1997 National Semiconductor Corporation DS005277 Features n Easy interface to all microprocessors, or operates “stand alone” ...

Page 2

Block Diagram www.national.com 2 DS005277-1 ...

Page 3

... Absolute Maximum Ratings 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage (V ) (Note 3) CC Voltage at Any Pin −0. Except Control Inputs Voltage at Control Inputs (START, OE, CLOCK, ALE, EXPANSION CONTROL, ADD A, ADD B, ADD C, ADD D) Storage Temperature Range = 25˚ ...

Page 4

Electrical Characteristics Digital Levels and DC Specifications: ADC0816CCJ, ADC0816CCN, ADC0817CCN — 4.75V V unless otherwise noted. Symbol Parameter CONTROL INPUTS V Logical “1” Input Voltage IN(1) V Logical “0” Input Voltage IN(0) I Logical “1” Input Current IN(1) (The Control ...

Page 5

Functional Description Multiplexer: The device contains a 16-channel single-ended analog signal multiplexer. A particular input channel is se- lected by using the address decoder. Table *NO TGT: table NS0669* shows the input states for the address line and the expansion ...

Page 6

Functional Description FIGURE 2. 3-Bit A/D Transfer Curve Timing Diagram www.national.com (Continued) FIGURE 3. 3-Bit A/D Absolute Accuracy Curve DS005277-3 FIGURE 4. Typical Error Curve FIGURE 5. 6 DS005277-4 DS005277-5 DS005277-7 ...

Page 7

... DC component which is not passed by the AC am- plifier. This makes the entire A/D converter extremely insen- sitive to temperature, long term drift and input offset errors. Figure 4 shows a typical error curve for the ADC0816 as measured using the procedures outlined in AN-179. DS005277-6 ADC0816CCJ or ADC0816CJ 7 www.national.com ...

Page 8

Typical Performance Characteristics FIGURE 6. Comparator 5V REF TRI-STATE Test Circuits and Timing Diagrams Applications Information OPERATION 1.0 RATIOMETRIC CONVERSION The ADC0816, ADC0817 is designed as a complete Data Acquisition System (DAS) for ...

Page 9

Applications Information (Continued) A good example of a ratiometric transducer is a potentiom- eter used as a position sensor. The position of the wiper is di- rectly proportional to the output voltage which is a ratio of the full-scale voltage ...

Page 10

Applications Information FIGURE 11. Ground Referenced Conversion System with FIGURE 12. Typical Reference and Supply Circuit www.national.com (Continued) FIGURE 10. Ground Referenced Conversion System Using Trimmed Supply Reference Generating V Supply CC 10 DS005277-12 DS005277-13 DS005277-14 ...

Page 11

Applications Information (Continued) FIGURE 13. Symmetrically Centered Reference 3.0 CONVERTER EQUATIONS The transition between adjacent codes N and given by: The center of an output code N is given by: The output code N for an ...

Page 12

Typical Application *Address latches needed for 8085 and SC/MP interfacing the ADC0816 microprocessor Microprocessor Interface Table PROCESSOR READ 8080 MEMR 8085 RD Z-80 RD SC/MP NRDS 6800 VMA • 2 • R/W Ordering Information TEMPERATURE RANGE ± ...

Page 13

Physical Dimensions inches (millimeters) unless otherwise noted Cavity Dual-In-Line Package (J) NS Package Number J40A Molded Dual-In-Line Package (N) NS Package Number N40A 13 www.national.com ...

Page 14

... National Semiconductor Asia Pacific Customer Fax: +49 (0) 1 80-530 85 86 Response Group Email: europe.support@nsc.com Tel: 65-2544466 Fax: 65-2504466 Tel: +49 (0) 1 80-532 78 32 Email: sea.support@nsc.com Tel: +49 (0) 1 80-534 16 80 National Semiconductor Japan Ltd. Tel: 81-3-5620-6175 Fax: 81-3-5620-6179 ...

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