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ADC0804LCN Equivalent & Substitute Parts Reference
Part Overview
The ADC0804LCN from Texas Instruments is an 8-bit SAR (Successive Approximation Register) analog-to-digital converter (ADC) featuring 1 differential input and a parallel data interface in a 20-DIP through-hole package. This ADC operates from 4.5V to 6.3V analog and digital supply, offers a sampling rate of 10k samples per second, and has an operating temperature range from 0°C to 70°C. Notably, the ADC0804LCN is classified as obsolete. Identifying alternative models is essential for sustaining system designs, managing end-of-life component risks, and ensuring ongoing compliance with regulatory standards.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Number of Bits | 8 |
| Sampling Rate (Per Second) | 10k |
| Number of Inputs | 1 |
| Input Type | Differential |
| Data Interface | Parallel |
| Configuration | ADC |
| Number of A/D Converters | 1 |
| Architecture | SAR |
| Reference Type | External, Supply |
| Voltage - Supply, Analog | 4.5V ~ 6.3V |
| Voltage - Supply, Digital | 4.5V ~ 6.3V |
| Operating Temperature | 0°C ~ 70°C |
| Package / Case | 20-DIP (0.300", 7.62mm) |
| Mounting Type | Through Hole |
| RoHS Status | RoHS non-compliant |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitute parts are identified based exclusively on the precise alignment of key functional and regulatory parameters, including: number of bits (8), sampling rate (10k), number and type of inputs (1, differential), data interface (parallel), ADC configuration, architecture (SAR), reference type (external, supply), analog and digital supply voltage range (4.5V–6.3V), and overall electrical and mechanical compatibility. Package type, mounting method, and RoHS status are included for complete interchangeability assessment.
Parameter Comparison
| Parameter | ADC0804LCN (Main) | ADC0804LCWM/NOPB (Substitute) |
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments |
| Number of Bits | 8 | 8 |
| Sampling Rate (Per Second) | 10k | 10k |
| Number of Inputs | 1 | 1 |
| Input Type | Differential | Differential |
| Data Interface | Parallel | Parallel |
| Configuration | ADC | ADC |
| Number of A/D Converters | 1 | 1 |
| Architecture | SAR | SAR |
| Reference Type | External, Supply | External, Supply |
| Voltage - Supply, Analog | 4.5V ~ 6.3V | 4.5V ~ 6.3V |
| Voltage - Supply, Digital | 4.5V ~ 6.3V | 4.5V ~ 6.3V |
| Operating Temperature | 0°C ~ 70°C | -40°C ~ 85°C |
| Package / Case | 20-DIP (0.300", 7.62mm) | 20-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Through Hole | Surface Mount |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
| Product Status | Obsolete | Active |
Engineering Selection Recommendations
Selection between ADC0804LCN and ADC0804LCWM/NOPB should be based on current product status, compliance standards, and package compatibility requirements. The ADC0804LCN is obsolete and not RoHS compliant, whereas the ADC0804LCWM/NOPB is active and ROHS3 compliant. Consider current inventory and regulatory mandates during component selection.
Frequently Asked Questions (FAQ)
Q: What are the primary substitution criteria for the ADC0804LCN?
A: Substitution requires exact match of electrical parameters, architecture, data interface, supply voltages, and functional features as specified.
Q: Is the package type identical between ADC0804LCN and ADC0804LCWM/NOPB?
A: No. ADC0804LCN is a 20-DIP through-hole, while ADC0804LCWM/NOPB is a 20-SOIC surface mount package.
Q: Do the substitute parts support the same input type and data interface?
A: Yes. Both parts support differential input and parallel data interface.
Q: How does RoHS compliance affect substitute selection?
A: ADC0804LCWM/NOPB is ROHS3 compliant, potentially meeting stricter environmental regulations.
Q: Does the operating temperature range differ between parts?
A: Yes. The substitute ADC0804LCWM/NOPB offers a wider temperature range (-40°C to 85°C).
Q: Are drop-in replacements possible?
A: Pin-for-pin replacement is possible only if package type and mounting method are compatible with the existing PCB design.
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