MAX1240CCSA Equivalent & Substitute Parts

Part Overview

The MAX1240CCSA is a 12-bit Analog-to-Digital Converter (ADC) manufactured by Analog Devices Inc./Maxim Integrated, designed for single-ended input data acquisition applications. This component features a Successive Approximation Register (SAR) architecture with SPI digital interface and operates across a 2.7V to 3.6V supply voltage range. The MAX1240CCSA is classified as obsolete, making equivalent substitute parts necessary for ongoing production and design continuity.

Key Parameters

Parameter	Specification
Resolution	12 Bits
Sampling Rate	73 kSPS
Number of Inputs	1
Input Type	Single Ended
Digital Interface	SPI
Architecture	SAR
Reference Type	External, Internal
Analog Supply Voltage	2.7V ~ 3.6V
Digital Supply Voltage	2.7V ~ 3.6V
Operating Temperature Range	0°C ~ 70°C
Package Type	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitute parts for the MAX1240CCSA are determined by strict equivalence across all electrical and mechanical parameters. The substitution criteria are based on the following key parameters:

12-bit resolution
73 kSPS sampling rate
Single-ended input configuration
SPI digital interface
SAR architecture
2.7V to 3.6V dual supply voltage range
8-SOIC surface mount package
Operating temperature range of 0°C to 70°C

All substitute parts listed maintain identical electrical specifications and physical packaging, ensuring direct functional interchangeability. Differences exist only in product status and compliance certifications.

Parameter Comparison

Parameter	MAX1240CCSA	MAX1240CCSA+	MAX1240ACSA+	MAX1240BCSA+
Resolution (Bits)	12	12	12	12
Sampling Rate (kSPS)	73	73	73	73
Number of Inputs	1	1	1	1
Input Type	Single Ended	Single Ended	Single Ended	Single Ended
Digital Interface	SPI	SPI	SPI	SPI
Architecture	SAR	SAR	SAR	SAR
Reference Type	External, Internal	External, Internal	External, Internal	External, Internal
Analog Supply Voltage	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V
Digital Supply Voltage	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Obsolete	Active
RoHS Status	RoHS Non-Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Format	Bulk	Tube	Tube	Tube

Engineering Selection Recommendations

For new designs and production continuity, MAX1240BCSA+ is the primary substitute for MAX1240CCSA. This part maintains full electrical and mechanical equivalence while offering active product status and ROHS3 compliance. MAX1240CCSA+ serves as a direct packaging equivalent with identical specifications and active status. MAX1240ACSA+ provides parametric equivalence but carries obsolete product status.

The selection between MAX1240BCSA+ and MAX1240CCSA+ should be based on supply chain availability and packaging requirements, as both are active products with ROHS3 compliance. For applications requiring RoHS compliance certification, both MAX1240BCSA+ and MAX1240CCSA+ are suitable replacements for the non-compliant MAX1240CCSA.

Frequently Asked Questions (FAQ)

Q: Can MAX1240BCSA+ directly replace MAX1240CCSA in existing designs?

A: Yes. MAX1240BCSA+ maintains identical electrical specifications, pin configuration, and 8-SOIC package dimensions. No circuit modifications are required for direct substitution.

Q: What is the difference between MAX1240CCSA and MAX1240CCSA+?

A: The primary differences are product status (obsolete vs. active), RoHS compliance (non-compliant vs. ROHS3 compliant), and packaging format (bulk vs. tube). Electrical and mechanical specifications are identical.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All substitute parts use the 8-SOIC (0.154", 3.90mm Width) package with identical pin assignments and spacing, ensuring compatibility with existing PCB designs.

Q: Which substitute part should be selected for new production?

A: MAX1240BCSA+ or MAX1240CCSA+ are recommended for new production due to active product status and ROHS3 compliance. Both offer equivalent performance and availability.

Q: Does the operating temperature range differ among substitute parts?

A: No. All parts maintain the same 0°C to 70°C operating temperature range, ensuring thermal compatibility across all substitutes.

Q: Are there any differences in SPI interface timing or protocol?

A: No. All substitute parts implement identical SPI digital interface specifications and timing characteristics.

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