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MAX503CWG Equivalent & Substitute Parts
Part Overview
The MAX503CWG is a 10-bit digital-to-analog converter (DAC) manufactured by Analog Devices Inc./Maxim Integrated, designed for data acquisition applications requiring single-channel voltage output conversion. The device operates with dual supply voltages (±5V analog, 5V digital) and features an R-2R architecture with 25µs typical settling time. The MAX503CWG is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Resolution | 10 Bits |
| Number of D/A Converters | 1 |
| Output Type | Voltage - Buffered |
| Settling Time (Typical) | 25µs |
| Data Interface | Parallel |
| Reference Type | External, Internal |
| Analog Supply Voltage | ±5V |
| Digital Supply Voltage | 5V |
| INL/DNL | ±0.5 LSB (Max) / ±1 LSB (Max) |
| Architecture | R-2R |
| Operating Temperature Range | 0°C to 70°C |
| Package | 24-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
Substitute Part Grouping Explanation
Substitution eligibility for the MAX503CWG is determined by strict equivalence across the following critical parameters:
- Resolution and Converter Count: 10-bit resolution with single D/A converter
- Output Configuration: Voltage-buffered output with no differential output capability
- Interface and Reference: Parallel data interface with external and internal reference support
- Supply Voltage Requirements: ±5V analog supply and 5V digital supply
- Linearity Specifications: INL/DNL performance of ±0.5 LSB (Max) and ±1 LSB (Max)
- Settling Time: 25µs typical settling time
- Package and Mounting: 24-SOIC surface mount package with identical physical dimensions
The MAX503CWG+ qualifies as a direct substitute based on complete parameter alignment across all electrical and mechanical specifications.
Parameter Comparison
| Parameter | MAX503CWG (Main Part) | MAX503CWG+ (Substitute) |
|---|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated | Analog Devices Inc./Maxim Integrated |
| Resolution | 10 Bits | 10 Bits |
| Number of D/A Converters | 1 | 1 |
| Output Type | Voltage - Buffered | Voltage - Buffered |
| Settling Time (Typical) | 25µs | 25µs |
| Data Interface | Parallel | Parallel |
| Reference Type | External, Internal | External, Internal |
| Analog Supply Voltage | ±5V | ±5V |
| Digital Supply Voltage | 5V | 5V |
| INL/DNL | ±0.5 LSB (Max) / ±1 LSB (Max) | ±0.5 LSB (Max) / ±1 LSB (Max) |
| Architecture | R-2R | R-2R |
| Operating Temperature Range | 0°C to 70°C | 0°C to 70°C |
| Package / Case | 24-SOIC (0.295", 7.50mm Width) | 24-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount | Surface Mount |
| Product Status | Obsolete | Active |
| RoHS Status | RoHS Non-Compliant | RoHS3 Compliant |
Engineering Selection Recommendations
The MAX503CWG+ is the direct functional equivalent of the MAX503CWG with identical electrical and mechanical specifications. The primary distinction is product lifecycle status: the MAX503CWG is obsolete while the MAX503CWG+ maintains active production status. Additionally, the MAX503CWG+ achieves RoHS3 compliance, whereas the original MAX503CWG is RoHS non-compliant. Both devices share identical packaging (24-SOIC), pinout configuration, and performance characteristics, enabling direct substitution in existing designs. The MAX503CWG+ is the recommended selection for new designs and replacement applications requiring current component availability and regulatory compliance.
Frequently Asked Questions (FAQ)
Q: Can the MAX503CWG+ directly replace the MAX503CWG in existing circuit designs?
A: Yes. The MAX503CWG+ provides complete electrical and mechanical equivalence to the MAX503CWG. Both devices feature identical 10-bit resolution, ±5V/5V dual supply operation, 25µs settling time, and 24-SOIC surface mount packaging. Pin-for-pin compatibility is maintained, allowing direct substitution without circuit modification.
Q: What is the primary reason to transition from MAX503CWG to MAX503CWG+?
A: The MAX503CWG is classified as obsolete, creating supply chain risk and limiting availability. The MAX503CWG+ maintains active production status with current inventory availability. Additionally, the MAX503CWG+ achieves RoHS3 compliance, meeting modern regulatory requirements that the original MAX503CWG does not satisfy.
Q: Are there any performance differences between these two parts?
A: No. Both devices deliver identical performance specifications including 10-bit resolution, ±0.5 LSB INL and ±1 LSB DNL linearity, R-2R architecture, and 25µs typical settling time across the 0°C to 70°C operating temperature range.
Q: What packaging options are available for these devices?
A: Both the MAX503CWG and MAX503CWG+ are supplied in 24-SOIC surface mount packages with 0.295" width (7.50mm). The MAX503CWG+ is available in tube packaging, while the original MAX503CWG packaging specification is not detailed in current documentation.
Q: Are there any supply voltage or reference configuration differences?
A: No. Both devices require identical dual supply voltages (±5V analog, 5V digital) and support both external and internal reference configurations. Reference type selection does not affect substitution eligibility.
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