MAX195BC/D Equivalent & Substitute Parts

Part Overview

The MAX195BC/D is a 16-bit Analog to Digital Converter (ADC) with single-ended input, SAR architecture, and SPI data interface, manufactured by Analog Devices Inc./Maxim Integrated. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for new designs and production continuity. The die package format limits direct board-level substitution and requires consideration of packaged alternatives that maintain electrical and functional compatibility.

Key Parameters

Parameter	MAX195BC/D
Resolution (Bits)	16
Sampling Rate	85 kSPS
Number of Inputs	1
Input Type	Single Ended
Data Interface	SPI
Architecture	SAR
Reference Type	External
Analog Supply Voltage	4.75V ~ 5.25V
Digital Supply Voltage	4.75V ~ 5.25V
Operating Temperature Range	0°C ~ 70°C
Package Type	Die
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the MAX195BC/D is determined by equivalence across the following critical parameters:

Resolution & Sampling Rate: 16-bit resolution at 85 kSPS
Input Configuration: Single-ended input with 1 channel
Interface Protocol: SPI serial data interface
Converter Architecture: SAR (Successive Approximation Register)
Reference Architecture: External reference requirement
Supply Voltage Compatibility: 5V nominal operation
Compliance & Status: Active product status with current manufacturing support

The MAX195BCWE+ is identified as the manufacturer-recommended substitute, offering identical electrical specifications while providing a packaged solution (16-SOIC) suitable for standard PCB assembly processes.

Parameter Comparison

Parameter	MAX195BC/D	MAX195BCWE+	Compatibility
Resolution	16 Bit	16 Bit	Equivalent
Sampling Rate	85 kSPS	85 kSPS	Equivalent
Number of Inputs	1	1	Equivalent
Input Type	Single Ended	Single Ended	Equivalent
Data Interface	SPI	SPI	Equivalent
Architecture	SAR	SAR	Equivalent
Reference Type	External	External	Equivalent
Analog Supply Voltage	4.75V ~ 5.25V	±5V	Compatible
Digital Supply Voltage	4.75V ~ 5.25V	±5V	Compatible
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	Equivalent
Package Type	Die	16-SOIC	Different Form Factor
Product Status	Obsolete	Active	Substitute Available
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent

Engineering Selection Recommendations

The MAX195BCWE+ is the appropriate substitute for the obsolete MAX195BC/D based on the following factors:

Functional Equivalence: Identical 16-bit resolution, 85 kSPS sampling rate, single-ended input configuration, and SPI interface ensure direct functional replacement at the circuit level.
Active Product Status: The MAX195BCWE+ is an active product with current manufacturing support and established supply chain availability (2800 units in stock), eliminating obsolescence risk.
Regulatory Compliance: Both components maintain ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory requirements.
Supply Voltage Compatibility: The ±5V supply specification of the MAX195BCWE+ is compatible with the 4.75V ~ 5.25V requirement of the original design.
Package Transition: Migration from die to 16-SOIC package requires PCB redesign but enables standard surface mount assembly and improved manufacturability.

Frequently Asked Questions (FAQ)

Q: Can the MAX195BCWE+ directly replace the MAX195BC/D without circuit modifications?

A: Electrical and functional compatibility is complete. However, the package transition from die to 16-SOIC requires PCB layout redesign. Pin-to-pin functionality is preserved, and the SPI interface remains unchanged.

Q: Are there differences in supply voltage specifications between these parts?

A: The MAX195BC/D specifies 4.75V ~ 5.25V for both analog and digital supplies. The MAX195BCWE+ specifies ±5V. Both operate at 5V nominal and are compatible within standard 5V system designs. The ±5V specification of the substitute provides broader tolerance margins.

Q: What is the significance of the product status change from Obsolete to Active?

A: Active product status ensures continued manufacturing, established supply chain support, and long-term availability. The MAX195BCWE+ eliminates the risk of future discontinuation and supply constraints associated with obsolete components.

Q: Are there any compliance or certification differences?

A: Both components are ROHS3 compliant and REACH unaffected. Compliance status is equivalent, and no additional certifications are required for substitution.

Q: What considerations apply to the package change from die to 16-SOIC?

A: The 16-SOIC package (0.295" width, 7.50mm) is a standard surface mount package compatible with automated assembly processes. Die packages require specialized handling and die-attach processes. The packaged solution improves manufacturability and reduces assembly complexity.

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