ADC0808CCV/NOPB National Semiconductor, ADC0808CCV/NOPB Datasheet

IC ADC 8BIT MPU 8CH MUX 28-PLCC

ADC0808CCV/NOPB

Manufacturer Part Number
ADC0808CCV/NOPB
Description
IC ADC 8BIT MPU 8CH MUX 28-PLCC
Manufacturer
National Semiconductor
Datasheet

Specifications of ADC0808CCV/NOPB

Number Of Bits
8
Number Of Converters
1
Power Dissipation (max)
875mW
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
28-LCC (J-Lead)
Package
28PLCC
Resolution
8 Bit
Sampling Rate
10 KSPS
Architecture
SAR
Number Of Adcs
1
Number Of Analog Inputs
8
Digital Interface Type
Parallel
Input Type
Voltage
Polarity Of Input Voltage
Unipolar
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
*ADC0808CCV
*ADC0808CCV/NOPB
ADC0808CCV

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ADC0808CCV/NOPB
Manufacturer:
Texas Instruments
Quantity:
10 000
© 2009 National Semiconductor Corporation
8-Bit μP Compatible A/D Converters with 8-Channel
Multiplexer
General Description
The ADC0808, ADC0809 data acquisition component is a
monolithic CMOS device with an 8-bit analog-to-digital con-
verter, 8-channel multiplexer and microprocessor compatible
control logic. The 8-bit A/D converter uses successive ap-
proximation as the conversion technique. The converter fea-
tures a high impedance chopper stabilized comparator, a
256R voltage divider with analog switch tree and a successive
approximation register. The 8-channel multiplexer can direct-
ly access any of 8-single-ended analog signals.
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 outputs.
The design of the ADC0808, ADC0809 has been optimized
by incorporating the most desirable aspects of several A/D
conversion techniques. The ADC0808, ADC0809 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 suit-
ed to applications from process and machine control to con-
sumer and automotive applications. For 16-channel multi-
plexer with common output (sample/hold port) see ADC0816
data sheet. (See AN-247 for more information.)
Block Diagram
5672
ADC0808/ADC0809
See Ordering Information
Features
Key Specifications
Easy interface to all microprocessors
Operates ratiometrically or with 5 V
adjusted voltage reference
No zero or full-scale adjust required
8-channel multiplexer with address logic
0V to V
Outputs meet TTL voltage level specifications
ADC0808 equivalent to MM74C949
ADC0809 equivalent to MM74C949-1
Resolution
Total Unadjusted Error
Single Supply
Low Power
Conversion Time
CC
input range
DC
±½ LSB and ±1 LSB
or analog span
www.national.com
567201
July 8, 2009
15 mW
100 μs
5 V
8 Bits
DC

Related parts for ADC0808CCV/NOPB

ADC0808CCV/NOPB Summary of contents

Page 1

... For 16-channel multi- plexer with common output (sample/hold port) see ADC0816 data sheet. (See AN-247 for more information.) Block Diagram © 2009 National Semiconductor Corporation ADC0808/ADC0809 Features ■ Easy interface to all microprocessors ■ ...

Page 2

Connection Diagrams Dual-In-Line Package Order Number ADC0808CCN or ADC0809CCN See NS Package NA28E Ordering Information Temperature Range Package Outline ±½ LSB Unadjusted Error ±1 LSB Unadjusted www.national.com 567211 Order Number ADC0808CCV or ADC0809CCV −40°C to +85°C NA28E Molded DIP V28A ...

Page 3

... Absolute Maximum Ratings (Notes 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 Except Control Inputs Voltage at Control Inputs (START, OE, CLOCK, ALE, ADD A, ADD B, ADD C) Storage Temperature Range Package Dissipation at T =25° ...

Page 4

Symbol Parameter Logical “1” Input Current (The Control I IN(1) Inputs) Logical “0” Input Current (The Control I IN(0) Inputs) I Supply Current CC DATA OUTPUTS AND EOC (INTERRUPT) V Logical “1” Output Voltage OUT(1) V Logical “0” Output Voltage ...

Page 5

Functional Description MULTIPLEXER The device contains an 8-channel single-ended analog signal multiplexer. A particular input channel is selected by using the address decoder. Table 1 shows the input states for the ad- dress lines to select any channel. The address ...

Page 6

FIGURE 2. 3-Bit A/D Transfer Curve www.national.com FIGURE 1. Resistor Ladder and Switch Tree 567213 FIGURE 3. 3-Bit A/D Absolute Accuracy Curve FIGURE 4. Typical Error Curve 6 567202 567214 567215 ...

Page 7

Timing Diagram FIGURE 5. 7 567204 www.national.com ...

Page 8

Typical Performance Characteristics www.national.com 567216 FIGURE 6. Comparator I vs =5V) CC REF 567217 FIGURE 7. Multiplexer R vs =5V) CC REF 8 ...

Page 9

TRI-STATE Test Circuits and Timing Diagrams FIGURE 8. TRI-STATE Test Circuits and Timing Diagrams Applications Information OPERATION 1.0 RATIOMETRIC ...

Page 10

N-channel switches to P- channel switches. These limitations are automatically satis- fied in ratiometric systems and can be easily met in ground referenced ...

Page 11

FIGURE 11. Ground Referenced Conversion System with Reference Generating V CC FIGURE 12. Typical Reference and Supply Circuit 11 567225 Supply 567226 www.national.com ...

Page 12

*Ratiometric transducers 3.0 CONVERTER EQUATIONS The transition between adjacent codes N and N+1 is given by: The center of an output code N is given by: The output code N for an arbitrary input are the ...

Page 13

Typical Application *Address latches needed for 8085 and SC/MP interfacing the ADC0808 to a microprocessor PROCESSOR 8080 MEMR 8085 RD Z-80 RD SC/MP NRDS 6800 VMA•φ2•R/W TABLE 2. Microprocessor Interface Table READ WRITE INTERRUPT (COMMENT) MEMW INTR (Thru RST Circuit) ...

Page 14

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted Molded Dual-In-Line Package (N) Order Number ADC0808CCN or ADC0809CCN NS Package Number NA28E Molded Chip Carrier (V) Order Number ADC0808CCV or ADC0809CCV NS Package Number V28A 14 ...

Page 15

15 www.national.com ...

Page 16

... For more National Semiconductor product information and proven design tools, visit the following Web sites at: Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...

Related keywords