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Equivalent & Substitute Parts Reference: ALD1721ESAL
Part Overview
The ALD1721ESAL is a linear amplifier categorized as a general purpose operational amplifier (op amp), featuring rail-to-rail output, a single circuit configuration, and an 8-SOIC package. It is part of the EPAD® series from Advanced Linear Devices Inc. The device status is “Not For New Designs,” necessitating the selection of substitute parts for ongoing or new projects. Finding an equivalent component with comparable key parameters is essential for designs requiring continued support, supply continuity, or compliance with updated component lists.
Substiute Parts
Key Parameters
| Parameter | ALD1721ESAL Value |
|---|---|
| Amplifier Type | General Purpose |
| Number of Circuits | 1 |
| Output Type | Rail-to-Rail |
| Slew Rate | 1 V/µs |
| Gain Bandwidth Product | 1 MHz |
| Current - Input Bias | 0.01 pA |
| Voltage - Input Offset | 35 µV |
| Current - Supply | 120 µA |
| Current - Output / Channel | 1 mA |
| Voltage - Supply Span (Min) | 2 V |
| Voltage - Supply Span (Max) | 10 V |
| Operating Temperature | 0°C ~ 70°C |
| Mounting Type | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| RoHS Status | ROHS3 Compliant |
| MSL | 1 (Unlimited) |
| REACH Status | REACH Unaffected |
| ECCN | EAR99 |
| HTSUS | 8542.33.0001 |
Substitute Part Grouping Explanation
Substitutes are selected strictly based on matching or compatible key electrical parameters, mechanical features, and compliance characteristics within the linear amplifier category. The central criteria include amplifier type, number of circuits, output type, slew rate, gain bandwidth, input bias and offset, supply voltage range, mounting type, package/case, and regulatory statuses (RoHS, REACH, ECCN, HTSUS). Only parts explicitly listed as substitutes within the provided data, and matching these allowed parameters, are considered.
Parameter Comparison
| Parameter | ALD1721ESAL | AD623BRZ-R7 |
|---|---|---|
| Amplifier Type | General Purpose | Instrumentation |
| Number of Circuits | 1 | 1 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 1 V/µs | 0.3 V/µs |
| Current - Input Bias | 0.01 pA | 17 nA |
| Voltage - Input Offset | 35 µV | 25 µV |
| Current - Supply | 120 µA | 375 µA |
| Voltage - Supply Span (Min) | 2 V | 2.7 V |
| Voltage - Supply Span (Max) | 10 V | 12 V |
| Operating Temperature | 0°C ~ 70°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| MSL | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected |
| ECCN | EAR99 | EAR99 |
| HTSUS | 8542.33.0001 | 8542.33.0001 |
Engineering Selection Recommendations
The ALD1721ESAL is marked “Not For New Designs,” while the substitute part AD623BRZ-R7 is “Active.” Both devices meet ROHS3, REACH, ECCN EAR99, and HTSUS 8542.33.0001 regulatory compliance requirements, and share MSL 1 (Unlimited) status. For applications requiring ongoing support, selection should be based on product status and compliance alignment reflected in the provided parameters.
Frequently Asked Questions (FAQ)
Q1: What are the necessary parameters for substituting ALD1721ESAL?
Strictly the amplifier type, number of circuits, output type, slew rate, supply voltage range, mounting type, package compatibility, and compliance (RoHS, REACH, ECCN, HTSUS) define substitution suitability.
Q2: Is package compatibility assured between ALD1721ESAL and substitute AD623BRZ-R7?
Both models utilize the 8-SOIC (0.154", 3.90mm Width) surface mount package, ensuring mechanical compatibility.
Q3: Do both parts satisfy regulatory requirements?
ALD1721ESAL and AD623BRZ-R7 are both ROHS3 compliant, REACH unaffected, ECCN EAR99, and HTSUS 8542.33.0001 certified.
Q4: Are there differences in amplifier type between the listed parts?
ALD1721ESAL is a general purpose amplifier; AD623BRZ-R7 is specified as an instrumentation amplifier. Substitution is based strictly on provided parameters.
Q5: Should operating temperature be considered for substitution?
Operating temperature ranges for both devices are listed; for ALD1721ESAL it is 0°C ~ 70°C, and for AD623BRZ-R7 it is -40°C ~ 85°C. This parameter is observable in direct comparison.
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