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AD7482ASTZ Equivalent & Substitute Parts
Part Overview
The AD7482ASTZ is a 12-bit Analog to Digital Converter (ADC) manufactured by Analog Devices Inc., designed for single-ended input data acquisition applications. It features a Successive Approximation Register (SAR) architecture with a 3 MHz sampling rate and operates from dual 5V supply rails. The device is packaged in a 48-pin Low Profile Quad Flat Package (LQFP) with 7x7mm dimensions suitable for surface mount applications.
The AD7482ASTZ has reached obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this component.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resolution | 12 Bits |
| Sampling Rate | 3 MHz |
| Number of Inputs | 1 |
| Input Type | Single Ended |
| Data Interface | Parallel |
| Architecture | SAR |
| Reference Type | External, Internal |
| Analog Supply Voltage | 5V |
| Digital Supply Voltage | 5V |
| Operating Temperature Range | -40°C to 85°C |
| Package Type | 48-LQFP (7x7mm) |
| Mounting Type | Surface Mount |
| Moisture Sensitivity Level | MSL 3 (168 Hours) |
Substitute Part Grouping Explanation
Substitute parts for the AD7482ASTZ are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:
Critical Matching Parameters:
- Resolution: 12 bits
- Sampling Rate: 3 MHz
- Number of Inputs: 1
- Input Type: Single Ended
- Data Interface: Parallel
- Architecture: SAR
- Reference Type: External and Internal capability
- Supply Voltages: 5V analog and digital
- Operating Temperature Range: -40°C to 85°C
- Package: 48-LQFP (7x7mm)
- Mounting Type: Surface Mount
The AD7482BSTZ qualifies as a direct substitute, maintaining identical electrical specifications and physical packaging while offering active product status and improved supply availability.
Parameter Comparison
| Parameter | AD7482ASTZ (Main Part) | AD7482BSTZ (Substitute) |
|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. |
| Resolution | 12 Bits | 12 Bits |
| Sampling Rate | 3 MHz | 3 MHz |
| Number of Inputs | 1 | 1 |
| Input Type | Single Ended | Single Ended |
| Data Interface | Parallel | Parallel |
| Architecture | SAR | SAR |
| Reference Type | External, Internal | External, Internal |
| Analog Supply Voltage | 5V | 5V |
| Digital Supply Voltage | 5V | 5V |
| Operating Temperature Range | -40°C to 85°C | -40°C to 85°C |
| Package Type | 48-LQFP (7x7mm) | 48-LQFP (7x7mm) |
| Mounting Type | Surface Mount | Surface Mount |
| Moisture Sensitivity Level | MSL 3 (168 Hours) | MSL 3 (168 Hours) |
| Product Status | Obsolete | Active |
| RoHS Status | Not specified | ROHS3 Compliant |
| REACH Status | Not specified | REACH Unaffected |
Engineering Selection Recommendations
The AD7482BSTZ is the direct equivalent substitute for the AD7482ASTZ. Both devices share identical electrical specifications, pin configuration, and package dimensions, ensuring pin-for-pin compatibility without circuit modification.
The AD7482BSTZ offers the following advantages for component selection:
Product Status: The AD7482BSTZ maintains active product status with Analog Devices Inc., ensuring continued availability and technical support. The AD7482ASTZ has reached obsolete status, limiting future procurement options.
Compliance Certifications: The AD7482BSTZ is certified ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components in most markets.
Supply Availability: The AD7482BSTZ demonstrates higher inventory levels (1381 pieces) compared to the AD7482ASTZ (739 pieces), providing improved supply chain reliability for new designs and production continuity.
Selection of the AD7482BSTZ is appropriate for all applications currently using the AD7482ASTZ, with no design changes required.
Frequently Asked Questions (FAQ)
Q: Can the AD7482BSTZ replace the AD7482ASTZ in existing designs?
A: Yes. The AD7482BSTZ is a direct pin-for-pin equivalent with identical electrical specifications, operating parameters, and package dimensions. No circuit modifications are required.
Q: Are there differences in performance between these two parts?
A: No. Both devices share identical resolution (12 bits), sampling rate (3 MHz), supply voltages (5V), operating temperature range (-40°C to 85°C), and all functional specifications.
Q: What is the significance of the product status difference?
A: The AD7482ASTZ is obsolete, meaning Analog Devices Inc. no longer manufactures or supports this part. The AD7482BSTZ is active, ensuring ongoing availability, technical documentation, and manufacturer support.
Q: Are there packaging differences between these parts?
A: Both parts use the 48-LQFP (7x7mm) surface mount package with identical pin assignments and mechanical dimensions. The primary packaging difference is that the AD7482BSTZ is supplied in trays, while the AD7482ASTZ packaging type is not specified.
Q: What compliance certifications apply to the AD7482BSTZ?
A: The AD7482BSTZ is ROHS3 compliant and REACH unaffected, meeting current environmental regulations for electronic components in most jurisdictions.
Q: Is the moisture sensitivity level the same for both parts?
A: Yes. Both devices have MSL 3 rating with a 168-hour floor life, requiring identical handling and storage procedures.
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