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ADC0831CCWMX Equivalent & Substitute Parts
Part Overview
The ADC0831CCWMX is an 8-bit Analog to Digital Converter manufactured by Texas Instruments, designed for single-channel data acquisition applications. It features a Successive Approximation Register (SAR) architecture with external reference capability and SPI digital interface. The device is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | ADC0831CCWMX |
| Manufacturer | Texas Instruments |
| Number of Bits | 8 |
| Sampling Rate | 31.25 kSPS |
| Number of Inputs | 1 |
| Input Type | Differential, Pseudo-Differential, Single Ended |
| Data Interface | SPI |
| Architecture | SAR |
| Reference Type | External |
| Voltage Supply (Analog) | 4.5V ~ 6.3V |
| Voltage Supply (Digital) | 4.5V ~ 6.3V |
| Operating Temperature | 0°C ~ 70°C |
| Package | 14-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution for the ADC0831CCWMX is determined by strict equivalence across the following critical parameters:
- Resolution: 8-bit conversion capability
- Sampling Rate: 31.25 kSPS minimum performance
- Input Configuration: Single input channel supporting differential, pseudo-differential, and single-ended modes
- Digital Interface: SPI protocol compatibility
- Architecture: SAR-based conversion
- Reference Input: External reference requirement
- Supply Voltage Range: 4.5V to 6.3V for both analog and digital supplies
- Package Type: 14-SOIC surface mount form factor
- Operating Temperature Range: 0°C to 70°C minimum
The ADC0831CCWMX/NOPB qualifies as a direct substitute, maintaining identical electrical specifications and package configuration while offering improved compliance status.
Parameter Comparison
| Parameter | ADC0831CCWMX | ADC0831CCWMX/NOPB |
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments |
| Number of Bits | 8 | 8 |
| Sampling Rate (kSPS) | 31.25 | 31.25 |
| Number of Inputs | 1 | 1 |
| Input Type | Differential, Pseudo-Differential, Single Ended | Differential, Pseudo-Differential, Single Ended |
| Data Interface | SPI | SPI |
| Architecture | SAR | SAR |
| Reference Type | External | External |
| 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 | 0°C ~ 70°C |
| Package / Case | 14-SOIC (0.295", 7.50mm Width) | 14-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount | Surface Mount |
| Product Status | Obsolete | Obsolete |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 2A (4 Weeks) | 3 (168 Hours) |
Engineering Selection Recommendations
The ADC0831CCWMX/NOPB is the direct functional equivalent of the ADC0831CCWMX. Both devices share identical electrical specifications, pin configuration, and package geometry, ensuring pin-for-pin compatibility in existing circuit designs.
The primary distinction between these parts is regulatory compliance status. The ADC0831CCWMX/NOPB achieves ROHS3 compliance, whereas the original ADC0831CCWMX does not meet RoHS requirements. For applications subject to RoHS directives or environmental regulations, the ADC0831CCWMX/NOPB is the appropriate selection.
Moisture sensitivity levels differ between the two variants. The ADC0831CCWMX/NOPB specifies MSL 3 (168 hours), compared to MSL 2A (4 weeks) for the original part. This affects storage and handling protocols but does not impact functional performance in deployed applications.
Frequently Asked Questions (FAQ)
Q: Can ADC0831CCWMX/NOPB be used as a direct replacement for ADC0831CCWMX?
A: Yes. Both parts are electrically and mechanically identical. The ADC0831CCWMX/NOPB maintains the same 8-bit resolution, 31.25 kSPS sampling rate, SPI interface, external reference configuration, and 14-SOIC package. Pin-for-pin substitution is supported without circuit modification.
Q: What is the difference between these two part numbers?
A: The primary differences are RoHS compliance status and moisture sensitivity level. The ADC0831CCWMX/NOPB is ROHS3 compliant and carries MSL 3 rating, while the ADC0831CCWMX is RoHS non-compliant with MSL 2A rating. Electrical performance and functionality are identical.
Q: Are there any package or pinout differences?
A: No. Both parts use the 14-SOIC (0.295", 7.50mm Width) surface mount package with identical pinout and mechanical dimensions. PCB layout and footprints require no modification.
Q: Which part should be selected for new designs?
A: For new designs, the ADC0831CCWMX/NOPB is recommended due to ROHS3 compliance, which aligns with current environmental and regulatory standards. Both parts are classified as obsolete; long-term availability should be evaluated with component suppliers.
Q: How do supply voltage requirements compare?
A: Both parts require identical supply voltage ranges: 4.5V to 6.3V for analog supply and 4.5V to 6.3V for digital supply. Power supply design and filtering specifications remain unchanged between the two variants.
Q: What is the operating temperature range for both parts?
A: Both ADC0831CCWMX and ADC0831CCWMX/NOPB operate across 0°C to 70°C. Temperature-dependent performance characteristics and thermal management considerations are equivalent for both devices.
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