ALD1702PAL Equivalent & Substitute Parts

Part Overview

The ALD1702PAL is a general purpose operational amplifier manufactured by Advanced Linear Devices Inc., housed in an 8-DIP through-hole package. This single-circuit, rail-to-rail output amplifier operates across a 4V to 10V supply span and is classified as Active product status with full RoHS3 compliance. Substitute parts are identified when equivalent functional performance is required due to component unavailability, inventory constraints, or design flexibility within specified electrical and mechanical parameters.

Substiute Parts

ALD1702PAL

Advanced Linear Devices Inc.In Stock: 811ALD1702PAL Datasheet

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AD8031ANZ

Analog Devices Inc.In Stock: 3535AD8031ANZ Datasheet

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OPA703PA

Texas InstrumentsIn Stock: 1693OPA703PA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ALD1702PAL are selected based on strict alignment with the following critical parameters:

Package Compatibility: All substitute parts must use the 8-DIP (0.300", 7.62mm) through-hole package to ensure direct PCB footprint compatibility without layout modifications.

Electrical Classification: Substitute parts must be single-circuit operational amplifiers with rail-to-rail output capability, maintaining the same functional category as the original part.

Supply Voltage Range: Substitute parts must operate within or encompass the 4V to 10V supply span of the ALD1702PAL. Parts with extended supply ranges remain compatible provided the minimum and maximum ratings do not restrict operation within this window.

Mounting Technology: All substitutes must use through-hole mounting to maintain assembly process compatibility.

Compliance Standards: Substitute parts must maintain RoHS3 compliance and REACH unaffected status to satisfy regulatory requirements equivalent to the original part.

The identified substitutes—AD8031ANZ and OPA703PA—satisfy these core substitution criteria while offering variations in performance characteristics such as slew rate, bandwidth, and input bias current.

Parameter Comparison

Engineering Selection Recommendations

AD8031ANZ (Analog Devices Inc.): This substitute part maintains full package and mounting compatibility with the ALD1702PAL. The AD8031ANZ operates within an extended supply voltage range (2.7V to 12V) that encompasses the 4V to 10V requirement of the original part. Both parts are Active status with RoHS3 compliance and REACH unaffected designation. The AD8031ANZ exhibits superior slew rate performance (35V/µs versus 2.8V/µs) and higher output current capability (15mA versus 8mA), with extended operating temperature range (-40°C to 85°C versus 0°C to 70°C). Input bias current is higher at 450nA. This part is suitable for applications requiring enhanced dynamic performance within the specified supply constraints.

OPA703PA (Texas Instruments): This substitute part provides direct package and mounting compatibility with the ALD1702PAL in the 8-DIP through-hole configuration. The OPA703PA operates across a 4V to 12V supply span, encompassing the original part's 4V to 10V range. Both parts are Active status with RoHS3 compliance and REACH unaffected status. The OPA703PA offers significantly lower supply current consumption (160µA versus 1.1mA) and superior input offset voltage specification (160µV versus 4.5mV). Operating temperature range extends to -40°C to 85°C. Slew rate is lower at 0.6V/µs. This part is suitable for low-power applications prioritizing reduced supply current draw and improved offset voltage performance.

Frequently Asked Questions (FAQ)

Q: Can AD8031ANZ and OPA703PA be used interchangeably with ALD1702PAL on the same PCB?

A: Yes, both substitute parts use the identical 8-DIP (0.300", 7.62mm) through-hole package. Direct pin-for-pin substitution is possible without PCB layout modifications. However, circuit performance characteristics will differ due to variations in slew rate, bandwidth, input bias current, and supply current specifications.

Q: What is the primary difference between the two substitute options?

A: AD8031ANZ prioritizes high-speed performance with 35V/µs slew rate and 15mA output current, suitable for dynamic signal applications. OPA703PA prioritizes low-power operation with 160µA supply current and superior input offset voltage at 160µV, suitable for battery-powered or precision measurement applications.

Q: Are both substitute parts compliant with the same regulatory standards as the ALD1702PAL?

A: Yes. Both AD8031ANZ and OPA703PA are RoHS3 compliant and REACH unaffected, matching the regulatory status of the ALD1702PAL.

Q: What supply voltage range must be maintained for all three parts?

A: The ALD1702PAL operates from 4V to 10V. Both substitutes operate within extended ranges (AD8031ANZ: 2.7V to 12V; OPA703PA: 4V to 12V). Applications must maintain supply voltages within the 4V to 10V window to ensure compatibility across all three parts.

Q: Does operating temperature range affect substitution decisions?

A: The ALD1702PAL operates from 0°C to 70°C. Both substitutes extend to -40°C to 85°C. If the application requires operation below 0°C or above 70°C, only the substitute parts provide the extended temperature capability. For applications within 0°C to 70°C, all three parts are suitable.

Q: How do input bias current differences impact circuit design?

A: ALD1702PAL and OPA703PA both specify 1pA input bias current. AD8031ANZ specifies 450nA, which is significantly higher. High input impedance circuits or precision transimpedance applications may require careful consideration of this parameter when selecting AD8031ANZ.

Q: Are there any packaging or moisture sensitivity differences?

A: All three parts use 8-DIP through-hole packages. ALD1702PAL and AD8031ANZ specify MSL 1 (Unlimited). OPA703PA lists MSL as Not Applicable. All parts are suitable for standard PCB assembly processes without special moisture handling requirements.