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ADC0809CCN-ADC0809CCV/NOPB-ADC0809N
8-bit Microprocessor Compatible A/D Converters With 8-Channel Multiplexer
ADC0808-N, ADC0809-N
www.ti.com SNAS535H –OCTOBER 1999–REVISED MARCH 2013
ADC0808/ADC0809 8-Bit μP Compatible A/D Converters with 8-Channel Multiplexer
Checkfor Samples: ADC0808-N, ADC0809-N
1FEATURES DESCRIPTIONThe ADC0808, ADC0809 data acquisition component
Easy Interfaceto All Microprocessors isa monolithic CMOS device with an 8-bit analog-to-
• Operates Ratiometricallyor with5 VDCor digital converter, 8-channel multiplexer and
Analog Span Adjusted Voltage Reference microprocessor compatible control logic. The 8-bit
No Zeroor Full-Scale Adjust Required A/D converter uses successive approximationas the
conversion technique. The converter featuresa high
• 8-Channel Multiplexer with Address Logic impedance chopper stabilized comparator,a 256R
• 0Vto VCC Input Range voltage divider with analog switch tree anda
Outputs meet TTL Voltage Level Specifications successive approximation register. The 8-channel
multiplexer can directly access anyof 8-single-ended
• ADC0808 Equivalentto MM74C949 analog signals.
• ADC0809 Equivalentto MM74C949-1The device eliminates the need for external zero and
full-scale adjustments. Easy interfacing to
KEY SPECIFICATIONS microprocessors is provided by the latched and
• Resolution:8 Bits decoded multiplexer address inputs and latched TTL
Total Unadjusted Error: ±½ LSB and±1 LSB TRI-STATE outputs.
Single Supply:5 VDC The design of the ADC0808, ADC0809 has been
Low Power:15 mW optimizedby incorporating the most desirable aspects several A/D conversion techniques. The ADC0808,
• Conversion Time: 100μs ADC0809 offers high speed, high accuracy, minimal
temperature dependence, excellent long-term
accuracy and repeatability, and consumes minimal
power. These features make this device ideally suited applications from process and machine controlto
consumer and automotive applications. For 16-
channel multiplexer with common output (sample/hold
port) see ADC0816 data sheet. (See AN-247
(Literature Number SNOA595) for more information.)
Block Diagram
Connection Diagrams
