The ADC0804LCN/NOPB is a CMOS successive-approximation analog-to-digital converter manufactured by Texas Instruments. It converts a differential analog input signal into an eight-bit digital output and is designed for direct connection to microprocessors through a parallel data interface.

The device uses a differential potentiometric-ladder architecture to improve common-mode rejection and allow the analog zero-input level to be offset. Its adjustable reference input permits smaller analog voltage spans to use the converter’s full resolution. Tri-state output latches allow direct connection to a processor data bus without additional interface logic.

The converter can operate as a microprocessor-controlled device or as a standalone, free-running converter. An integrated clock generator allows operation using an external resistor-capacitor network, although an external clock signal may also be used.

Manufacturer: Texas Instruments

Manufacturer Part Number: ADC0804LCN/NOPB

Component Type: Analog-to-Digital Converter

Converter Architecture: Successive Approximation Register

Resolution: Eight bits

Number of Channels: One

Input Configuration: Differential analog input

Analog Input Range: Zero volts to five volts with a five-volt supply

Supply Voltage Range: Four and one-half volts to six and three-tenths volts

Typical Supply Voltage: Five volts

Reference Type: External, supply-based or ratiometric reference

Reference Input: Adjustable VREF divided-by-two input

Digital Interface: Eight-bit parallel interface

Microprocessor Compatibility: Directly compatible with common eight-bit microprocessors

Conversion Time: Approximately one hundred microseconds

Maximum Sampling Rate: Approximately ten kilosamples per second

Total Unadjusted Error: Plus or minus one least significant bit

Digital Outputs: Latched tri-state outputs

Logic Compatibility: TTL and MOS-compatible inputs and outputs

Clock Configuration: Integrated clock generator with external resistor-capacitor timing or external clock input

Operating Modes: Processor-controlled, standalone or continuous free-running operation

Operating Temperature Range: Zero degrees Celsius to seventy degrees Celsius

Package Type: Twenty-pin plastic dual in-line package

Mounting Style: Through-hole mounting

Package Width: Standard three-tenths-inch DIP format

Environmental Classification: Lead-free and RoHS-compliant NOPB version

Lifecycle Status: Obsolete and generally not recommended for new production designs

Suitable for sensor signal conversion, temperature-monitoring systems, voltage measurement, transducer interfaces, embedded control systems, laboratory equipment, educational electronics projects and general-purpose data-acquisition circuits.

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