MAX191BEWG Equivalent & Substitute Parts

Part Overview

The MAX191BEWG is a 12-bit Analog-to-Digital Converter (ADC) manufactured by Analog Devices Inc./Maxim Integrated, designed for single-channel data acquisition applications. This device features a Successive Approximation Register (SAR) architecture with a 100 kSPS sampling rate, pseudo-differential input configuration, and dual data interface support (SPI and Parallel). The MAX191BEWG is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, design updates, and procurement continuity.

Substiute Parts

MAX191BEWG

Analog Devices Inc./Maxim IntegratedIn Stock: 2233MAX191BEWG Datasheet

Current PartRFQ

MAX191BEWG+

Analog Devices Inc./Maxim IntegratedIn Stock: 2355MAX191BEWG+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX191BEWG is determined by strict equivalence across the following critical parameters:

• Resolution: 12 bits (no deviation)
• Sampling Rate: 100 kSPS (no deviation)
• Number of Inputs: 1 channel (no deviation)
• Input Configuration: Pseudo-Differential (no deviation)
• Data Interface: SPI and Parallel support (both required)
• Architecture: SAR topology (no deviation)
• Reference: Internal reference (no deviation)
• Supply Voltages: ±5V/5V analog and 5V digital (no deviation)
• Operating Temperature: -40°C to 85°C (no deviation)
• Package: 24-SOIC form factor (no deviation)
• Mounting: Surface Mount (no deviation)

Only parts meeting all these criteria are considered direct functional equivalents.

Parameter Comparison

Engineering Selection Recommendations

The MAX191BEWG+ is the direct functional equivalent of the MAX191BEWG. Both devices are manufactured by Analog Devices Inc./Maxim Integrated and share identical electrical and mechanical specifications across all critical parameters.

The primary distinction between these parts is product lifecycle status and regulatory compliance:

• MAX191BEWG: Classified as obsolete. RoHS non-compliant. Suitable for legacy system maintenance and repair where original specifications must be preserved.
• MAX191BEWG+: Active product status with RoHS3 compliance. Recommended for new designs, system upgrades, and applications requiring current regulatory adherence. Packaged in tube format for improved handling and traceability.

For applications requiring continued support of the MAX191BEWG architecture, the MAX191BEWG+ provides full functional compatibility with enhanced compliance posture and active manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can MAX191BEWG+ be used as a direct replacement for MAX191BEWG in existing designs?

A: Yes. The MAX191BEWG+ is functionally identical to the MAX191BEWG across all electrical and mechanical parameters. Pin configuration, signal timing, supply requirements, and package dimensions are equivalent. Direct substitution is supported without circuit modification.

Q: What is the significance of the "+" designation in MAX191BEWG+?

A: The "+" suffix indicates an updated product variant with RoHS3 compliance and active manufacturing status. The electrical and functional specifications remain unchanged from the base MAX191BEWG.

Q: Are there packaging differences between MAX191BEWG and MAX191BEWG+?

A: Yes. The MAX191BEWG is supplied in bulk packaging, while MAX191BEWG+ is packaged in tube format. Both use the 24-SOIC surface-mount package. Tube packaging provides improved component protection and traceability during handling and storage.

Q: Why is the MAX191BEWG classified as obsolete?

A: Obsolescence indicates the part has been discontinued by the manufacturer. The MAX191BEWG+ serves as the active replacement, offering identical functionality with current compliance certifications and ongoing manufacturer support.

Q: Is the MAX191BEWG+ suitable for new product designs?

A: Yes. The MAX191BEWG+ is the recommended choice for new designs. It provides active product status, RoHS3 compliance, and full manufacturer support while maintaining complete functional equivalence to the original MAX191BEWG specification.

Q: What are the key parameters that define substitution eligibility for this device?

A: Substitution requires equivalence in resolution (12 bits), sampling rate (100 kSPS), single-channel pseudo-differential input, dual SPI/Parallel interface, SAR architecture, internal reference, ±5V/5V analog supply, 5V digital supply, -40°C to 85°C operating range, and 24-SOIC surface-mount package. Deviation in any parameter disqualifies a part as a direct equivalent.