ADC0801_15 Datasheet, PDF (1/56 Pages) Texas Instruments – Analog-to-Digital Converters

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ADC0801, ADC0802, ADC0803, ADC0804, ADC0805
SNOSBI1C – NOVEMBER 2009 – REVISED JUNE 2015
ADC080x 8-Bit, µP-Compatible, Analog-to-Digital Converters
1 Features
•1 Compatible With 8080-µP Derivatives – No
Interfacing Logic Needed – Access Time 135 ns
• Easy Interface to All Microprocessors, or Operates
as a Stand-Alone Deivce
• Differential Analog Voltage Inputs
• Logic Inputs and Outputs Meet Both MOS and
TTL Voltage-Level Specifications
• Works With 2.5-V (LM336) Voltage Reference
• On-Chip Clock Generator
• 0-V to 5-V Analog Input Voltage Range With
Single 5-V Supply
• No Zero Adjust Required
• 0.3-Inch Standard Width 20-Pin DIP Package
• 20-Pin Molded Chip Carrier or Small Outline
Package
• Operates Ratiometrically or With 5 V_DC, 2.5 V_DC,
or Analog Span Adjusted Voltage Reference
• Key Specifications
– Resolution: 8 Bits
– Total Error: ±1/4 LSB, ±1/2 LSB and ±1 LSB
– Conversion Time: 100 µs
2 Applications
• Operates With Any 8-Bit µP Processors or as a
Stand-Alone Device
• Interface to Temp Sensors, Voltage Sources, and
Transducers
3 Description
The ADC0801, ADC0802, ADC0803, ADC0804, and
ADC0805 devices are CMOS 8-bit successive
approximation converters (ADC) that use a differential
potentiometric ladder — similar to the 256R products.
These converters are designed to allow operation
with the NSC800 and INS8080A derivative control
bus with Tri-state output latches directly driving the
data bus. These ADCs appear like memory locations
or I/O ports to the microprocessor and no interfacing
logic is needed.
Differential analog voltage inputs allow increasing the
common-mode rejection and offsetting the analog
zero input voltage value. In addition, the voltage
reference input can be adjusted to allow encoding
any smaller analog voltage span to the full 8 bits of
resolution.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
ADC0801,
ADC0803
PDIP (20)
26.073 mm × 6.604 mm
ADC0802,
ADC0804
PDIP (20)
SOIC (20)
26.073 mm × 6.604 mm
12.80 mm × 7.50 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Schematic
ADC0801 Specified With ±¼ LSB Accuracy
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.