ADC0804LCWMX Equivalent & Substitute Parts

Part Overview

The ADC0804LCWMX is an 8-bit Analog to Digital Converter (ADC) with Successive Approximation Register (SAR) architecture, designed for single-channel data acquisition applications. This device features a parallel data interface, external/supply reference capability, and operates across a 4.5V to 6.3V supply voltage range. The main part is classified as Obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

ADC0804LCWMX

Texas InstrumentsIn Stock: 7647ADC0804LCWMX Datasheet

Current PartRFQ

ADC0804LCWMX/NOPB

Texas InstrumentsIn Stock: 2458ADC0804LCWMX/NOPB Datasheet

DirectRFQ

ADC0831CCWMX/NOPB

Texas InstrumentsIn Stock: 2053ADC0831CCWMX/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ADC0804LCWMX are classified based on electrical and mechanical compatibility within the following criteria:

Direct Equivalent (Identical Substitution):

• Resolution: 8 Bit
• Sampling Rate: 10k Per Second
• Number of Inputs: 1
• Input Type: Differential
• Data Interface: Parallel
• Architecture: SAR
• Reference Type: External, Supply
• Supply Voltage Range: 4.5V ~ 6.3V (both analog and digital)
• Package: 20-SOIC
• Mounting Type: Surface Mount

Manufacturer Recommended Alternative (Functional Substitution):

• Resolution: 8 Bit
• Architecture: SAR
• Supply Voltage Range: 4.5V ~ 6.3V (both analog and digital)
• Mounting Type: Surface Mount
• Note: Differs in sampling rate, input type flexibility, data interface, and package configuration

Parameter Comparison

Engineering Selection Recommendations

ADC0804LCWMX/NOPB is the direct equivalent substitute for ADC0804LCWMX. This part maintains identical electrical specifications and package configuration while offering Active product status and ROHS3 compliance, addressing obsolescence concerns for the original part.

ADC0831CCWMX/NOPB is a manufacturer-recommended alternative when design flexibility permits. This part provides higher sampling rate capability (31.25k vs. 10k per second), expanded input type support (Differential, Pseudo-Differential, Single Ended), and SPI serial interface instead of parallel. However, it requires design modifications due to different package (14-SOIC vs. 20-SOIC), narrower operating temperature range (0°C ~ 70°C vs. -40°C ~ 85°C), and reference type limitation (External only vs. External/Supply). This substitution is suitable only when application requirements align with the ADC0831 specifications and PCB layout can accommodate the smaller package footprint.

Frequently Asked Questions (FAQ)

Q: Can ADC0804LCWMX/NOPB be used as a direct replacement for ADC0804LCWMX?

A: Yes. ADC0804LCWMX/NOPB is a direct equivalent with identical electrical and mechanical specifications. The primary differences are product status (Active vs. Obsolete) and compliance certifications (ROHS3 Compliant vs. RoHS non-compliant).

Q: What are the key differences between ADC0804LCWMX and ADC0831CCWMX/NOPB?

A: The ADC0831CCWMX/NOPB offers higher sampling rate (31.25k vs. 10k per second), flexible input types (Differential, Pseudo-Differential, Single Ended vs. Differential only), and SPI serial interface (vs. parallel). However, it uses a smaller 14-SOIC package, has a narrower operating temperature range (0°C ~ 70°C vs. -40°C ~ 85°C), and supports External reference only (vs. External/Supply).

Q: Is the ADC0831CCWMX/NOPB suitable for applications requiring -40°C ~ 85°C operation?

A: No. The ADC0831CCWMX/NOPB operates only within 0°C ~ 70°C. Applications requiring extended low-temperature operation must use ADC0804LCWMX or ADC0804LCWMX/NOPB.

Q: What packaging considerations apply when substituting with ADC0831CCWMX/NOPB?

A: The ADC0831CCWMX/NOPB uses 14-SOIC packaging versus the 20-SOIC of the original part. PCB layout modifications are required, including different pin count and footprint dimensions.

Q: Are there compliance differences between these parts?

A: Yes. ADC0804LCWMX/NOPB and ADC0831CCWMX/NOPB are both ROHS3 Compliant, while the original ADC0804LCWMX is RoHS non-compliant. Moisture sensitivity levels also differ: ADC0804LCWMX (2A, 4 Weeks) versus ADC0804LCWMX/NOPB and ADC0831CCWMX/NOPB (both 3, 168 Hours).