# ADC0804LCN/NOPB (Component) ## Description # ADC0804LCN/NOPB Engineering Specifications **General Description** 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. **Engineering Specifications** **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 **Typical Applications** 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. #ADC0804LCN #ADC0804 #TexasInstruments #AnalogToDigitalConverter #ADC #DataAcquisition #EmbeddedSystems #ElectronicsEngineering #IntegratedCircuit #MicrocontrollerProjects #ElectronicComponents 8 Bit Analog to Digital Converter 1 Input 1 SAR 20-PDIP https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/721/ADC080x.pdf ## Component Details - **Owner:** adrian95 - **Created:** 6/5/2026 - **Last Updated:** 6/5/2026 - **Visibility:** Public - **Symbol Style:** parametric-v1 - **Manufacturer Name:** Texas Instruments - **Datasheet URL:** https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/721/ADC080x.pdf - **Part Type:** Integrated Circuit - **Manufacturer Part Number:** ADC0804LCN/NOPB ## Distributor Pricing (qty 1) *Pricing shown for quantity 1. For price breaks and other quantities, open in Flux.* | Distributor | Unit Price (qty 1) | Stock | |------------|--------------------|-------| | [Mouser](https://www.mouser.com/ProductDetail/Texas-Instruments/ADC0804LCN-NOPB?qs=7X5t%252BdzoRHCPkMknp%252BQptg%3D%3D) | N/A | N/A | - **Part Type:** Integrated Circuits - **Sub-Type:** Logic - **Manufacturer:** Texas Instruments - **MPN:** ADC0804LCN/NOPB - **Mount Type:** Through Hole - **Package / Case Code:** 20-DIP - **Pin Count:** 20 - **Logic Function:** AND - **Compliance:** Rohs, Lead Free ## Pins | Pin | Name | Type | |-----|------|------| | 1 | ~CS | | | 2 | ~RD | | | 3 | ~WR | | | 4 | CLK_IN | | | 5 | ~INTR | | | 6 | VIN(+) | | | 7 | VIN(-) | | | 8 | AGND | | | 9 | VREF/2 | | | 10 | DGND | | | 11 | DB7 | | | 12 | DB6 | | | 13 | DB5 | | | 14 | DB4 | | | 15 | DB3 | | | 16 | DB2 | | | 17 | DB1 | | | 18 | DB0 | | | 19 | CLKR | | | 20 | VCC | | --- *Generated from [https://www.flux.ai/adrian95/adc0804lcnnopb](https://www.flux.ai/adrian95/adc0804lcnnopb)*