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MAX1241BESA+ Equivalent & Substitute Parts
Part Overview
The MAX1241BESA+ 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 SAR (Successive Approximation Register) architecture device operates with external voltage reference and communicates via SPI interface. The part is currently in active production status with 2236 units in stock. Alternative models within the MAX1241 family are available to support supply chain flexibility and application-specific requirements.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resolution | 12 Bit |
| Sampling Rate | 73 kSPS |
| Number of Inputs | 1 |
| Input Type | Single Ended |
| Data Interface | SPI |
| Architecture | SAR |
| Reference Type | External |
| Analog Supply Voltage | 2.7V ~ 5.25V |
| Digital Supply Voltage | 2.7V ~ 5.25V |
| Operating Temperature Range | -40°C ~ 85°C |
| Package | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the MAX1241BESA+ are identified within the MAX1241 family based on identical electrical and mechanical parameters. All substitute candidates maintain the following critical specifications:
- 12-bit resolution with 73 kSPS sampling rate
- Single-ended input configuration with SPI digital interface
- SAR architecture with external reference capability
- Dual supply voltage range (2.7V ~ 5.25V for both analog and digital rails)
- Operating temperature range of -40°C ~ 85°C
- 8-SOIC surface mount package with identical pinout and footprint
- ROHS3 compliance and MSL 1 rating
The MAX1241 family variants (MAX1241AESA+, MAX1241BESA+, MAX1241CESA+) differ only in temperature grade designation, which is reflected in the part number suffix. All variants share identical functional specifications and are mechanically and electrically interchangeable within the specified operating temperature range.
Parameter Comparison
| Parameter | MAX1241BESA+ | MAX1241AESA+ | MAX1241CESA+ |
|---|---|---|---|
| Resolution (Bits) | 12 | 12 | 12 |
| Sampling Rate (kSPS) | 73 | 73 | 73 |
| Number of Inputs | 1 | 1 | 1 |
| Input Type | Single Ended | Single Ended | Single Ended |
| Data Interface | SPI | SPI | SPI |
| Architecture | SAR | SAR | SAR |
| Reference Type | External | External | External |
| Analog Supply Voltage | 2.7V ~ 5.25V | 2.7V ~ 5.25V | 2.7V ~ 5.25V |
| Digital Supply Voltage | 2.7V ~ 5.25V | 2.7V ~ 5.25V | 2.7V ~ 5.25V |
| Operating Temperature Range | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Package / Case | 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 |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Active | Active | Active |
| Current Inventory | 2236 Pcs | 1420 Pcs | 980 Pcs |
Engineering Selection Recommendations
All three variants of the MAX1241 family (MAX1241AESA+, MAX1241BESA+, MAX1241CESA+) are active production parts with ROHS3 compliance and identical electrical specifications. Selection between variants should be based on inventory availability and supply chain requirements. The MAX1241BESA+ offers the highest current stock level at 2236 units, followed by MAX1241AESA+ at 1420 units and MAX1241CESA+ at 980 units. All parts maintain REACH unaffected status and EAR99 export classification. MSL 1 rating indicates unlimited shelf life under standard storage conditions.
Frequently Asked Questions (FAQ)
Q: Are MAX1241AESA+, MAX1241BESA+, and MAX1241CESA+ pin-compatible?
A: Yes. All three variants share identical pinout and 8-SOIC package dimensions (0.154" width, 3.90mm). They are mechanically and electrically interchangeable without PCB modification.
Q: What is the difference between the MAX1241 variants?
A: The variants differ only in temperature grade designation reflected in the part number suffix. All maintain identical functional specifications including 12-bit resolution, 73 kSPS sampling rate, and -40°C ~ 85°C operating temperature range.
Q: Can I substitute MAX1241CESA+ for MAX1241BESA+ in my design?
A: Yes. Both parts meet identical electrical and mechanical specifications. Substitution is valid for applications requiring the specified operating temperature range and performance parameters.
Q: What supply voltages do these ADCs support?
A: Both analog and digital supply rails accept 2.7V to 5.25V. The external reference input allows flexible voltage reference selection within the supply range.
Q: Are these parts RoHS compliant?
A: Yes. All MAX1241 variants are ROHS3 compliant with MSL 1 rating, indicating unlimited moisture sensitivity protection under standard storage conditions.
Q: What is the SPI interface configuration?
A: The MAX1241 family uses standard SPI serial interface for digital data communication. Refer to the device datasheet for specific timing and protocol requirements.
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