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ALD1702BSAL Equivalent & Substitute Parts
Part Overview
The ALD1702BSAL is a general-purpose operational amplifier manufactured by Advanced Linear Devices Inc., designed for rail-to-rail signal conditioning applications. This single-circuit, 8-SOIC surface-mount device operates across a 4V to 12V supply range and is classified as Active product status. The ALD1702BSAL is specified for 0°C to 70°C operating temperature range with a slew rate of 2.8V/µs and gain bandwidth product of 1.7 MHz. Equivalent and substitute parts are identified based on matching functional category, package type, electrical performance parameters, and supply voltage compatibility to enable direct circuit board replacement or design flexibility.
Substiute Parts
Key Parameters
| Parameter | ALD1702BSAL |
|---|---|
| Manufacturer | Advanced Linear Devices Inc. |
| Category | Linear, Amplifiers |
| Amplifier Type | General Purpose |
| Number of Circuits | 1 |
| Output Type | Rail-to-Rail |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| Voltage - Supply Span (Min) | 4 V |
| Voltage - Supply Span (Max) | 12 V |
| Operating Temperature | 0°C ~ 70°C |
| Slew Rate | 2.8V/µs |
| Gain Bandwidth Product | 1.7 MHz |
| Current - Input Bias | 1 pA |
| Voltage - Input Offset | 2 mV |
| Current - Supply | 1.1 mA |
| Current - Output / Channel | 8 mA |
| Product Status | Active |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitute parts for the ALD1702BSAL are qualified based on the following criteria:
Mandatory Matching Parameters:
- Package / Case: 8-SOIC (0.154", 3.90mm Width)
- Mounting Type: Surface Mount
- Voltage - Supply Span: 4V minimum to 12V maximum
- Number of Circuits: 1
- Output Type: Rail-to-Rail
- Category: Linear, Amplifiers
- Current - Input Bias: 1 pA
Performance Parameters for Substitution: Substitute parts must maintain electrical compatibility within the application context. The ALD1702BSAL operates with a slew rate of 2.8V/µs and gain bandwidth product of 1.7 MHz. Substitute parts with equal or superior performance in these parameters are electrically compatible. Parts with lower slew rate or gain bandwidth product may be substituted in applications where the original specifications exceed circuit requirements.
Compliance Parameters: All substitute parts maintain ROHS3 compliance and EAR99 export classification, ensuring regulatory equivalence.
Parameter Comparison
| Parameter | ALD1702BSAL | OPA703UA | OPA703UA/2K5 | OPA704UA | OPA704UA/2K5 | OPA705UA |
|---|---|---|---|---|---|---|
| Manufacturer | Advanced Linear Devices Inc. | Burr Brown | Texas Instruments | Burr Brown | Texas Instruments | Burr Brown |
| Amplifier Type | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose | CMOS |
| Number of Circuits | 1 | 1 | 1 | 1 | 1 | 1 |
| Output Type | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail |
| 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) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Voltage - Supply Span (Min) | 4 V | 4 V | 4 V | 4 V | 4 V | 4 V |
| Voltage - Supply Span (Max) | 12 V | 12 V | 12 V | 12 V | 12 V | 12 V |
| Operating Temperature | 0°C ~ 70°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -55°C ~ 125°C |
| Slew Rate | 2.8V/µs | 0.6V/µs | 0.6V/µs | 3V/µs | 3V/µs | 0.6V/µs |
| Gain Bandwidth Product | 1.7 MHz | 1 MHz | 1 MHz | 3 MHz | 3 MHz | 1 MHz |
| Current - Input Bias | 1 pA | 1 pA | 1 pA | 1 pA | 1 pA | 1 pA |
| Voltage - Input Offset | 2 mV | 160 µV | 160 µV | 160 µV | 160 µV | 500 µV |
| Current - Supply | 1.1 mA | 160 µA | 160 µA | 160 µA | 160 µA | 160 µA |
| Current - Output / Channel | 8 mA | 10 mA | 10 mA | 10 mA | 10 mA | 10 mA |
| Product Status | Active | Active | Active | Active | Active | Active |
| RoHS Status | ROHS3 Compliant | Not specified | ROHS3 Compliant | Not specified | ROHS3 Compliant | Not specified |
Engineering Selection Recommendations
OPA703UA and OPA703UA/2K5 (1 MHz Bandwidth Devices)
The OPA703UA and OPA703UA/2K5 are functionally equivalent to the ALD1702BSAL in terms of package, supply voltage range, and rail-to-rail output configuration. Both devices operate within the 4V to 12V supply specification. The OPA703UA/2K5 variant from Texas Instruments carries ROHS3 compliance certification. These devices feature lower slew rate (0.6V/µs versus 2.8V/µs) and lower gain bandwidth product (1 MHz versus 1.7 MHz) compared to the ALD1702BSAL. Selection of OPA703 variants is appropriate for applications where the original device's performance specifications exceed circuit requirements. The OPA703UA/2K5 is supplied in Tape & Reel packaging, while the OPA703UA is supplied in Bulk packaging.
OPA704UA and OPA704UA/2K5 (3 MHz Bandwidth Devices)
The OPA704UA and OPA704UA/2K5 provide enhanced performance relative to the ALD1702BSAL, with slew rate of 3V/µs and gain bandwidth product of 3 MHz. Both devices maintain identical package, supply voltage, and rail-to-rail output specifications. The OPA704UA/2K5 variant from Texas Instruments carries ROHS3 compliance certification. These devices are suitable for applications requiring performance equal to or exceeding the ALD1702BSAL specifications. The OPA704UA/2K5 is supplied in Tape & Reel packaging, while the OPA704UA is supplied in Bulk packaging.
OPA705UA (CMOS Amplifier)
The OPA705UA is a CMOS-based amplifier variant with identical package and supply voltage specifications. This device features extended operating temperature range (-55°C to 125°C) compared to the ALD1702BSAL (0°C to 70°C). The OPA705UA operates with 0.6V/µs slew rate and 1 MHz gain bandwidth product. Selection of the OPA705UA is appropriate for applications requiring extended temperature operation or CMOS technology characteristics within the specified package and supply voltage constraints.
Compliance and Regulatory Status
All substitute parts maintain EAR99 export classification and HTSUS code 8542.33.0001 equivalence with the ALD1702BSAL. The OPA703UA/2K5 and OPA704UA/2K5 variants carry explicit ROHS3 compliance certification. All devices are classified as Active product status.
Frequently Asked Questions (FAQ)
Q: Can OPA703UA replace ALD1702BSAL in all applications?
A: The OPA703UA is mechanically and electrically compatible within the 4V to 12V supply range and 8-SOIC package specification. However, the OPA703UA operates with lower slew rate (0.6V/µs) and lower gain bandwidth product (1 MHz) compared to the ALD1702BSAL (2.8V/µs and 1.7 MHz respectively). Substitution is valid for applications where these lower performance specifications are acceptable.
Q: What is the difference between OPA704UA and OPA704UA/2K5?
A: Both devices are electrically identical with 3V/µs slew rate and 3 MHz gain bandwidth product. The primary difference is packaging: OPA704UA is supplied in Bulk packaging, while OPA704UA/2K5 is supplied in Tape & Reel (TR) packaging. The OPA704UA/2K5 carries explicit ROHS3 compliance certification. Selection depends on assembly process requirements and compliance documentation needs.
Q: Is the OPA705UA suitable for the ALD1702BSAL application?
A: The OPA705UA maintains package, supply voltage, and rail-to-rail output compatibility with the ALD1702BSAL. The OPA705UA is a CMOS amplifier variant with extended operating temperature range (-55°C to 125°C). Substitution is valid for applications requiring CMOS technology or extended temperature operation. The OPA705UA operates with 0.6V/µs slew rate and 1 MHz gain bandwidth product.
Q: What are the key parameters that determine substitution compatibility?
A: Substitution compatibility is determined by: 8-SOIC package specification, 4V to 12V supply voltage range, rail-to-rail output type, single-circuit configuration, and 1 pA input bias current. All listed substitute parts meet these mandatory parameters. Performance parameters such as slew rate and gain bandwidth product determine whether a substitute part meets or exceeds the original device specifications.
Q: Does operating temperature range affect substitution?
A: The ALD1702BSAL operates across 0°C to 70°C. Substitute parts OPA703UA, OPA703UA/2K5, OPA704UA, and OPA704UA/2K5 operate across -40°C to 85°C, providing extended temperature coverage. The OPA705UA operates across -55°C to 125°C. Substitution is valid when the substitute part's operating temperature range encompasses the application's required temperature specification.
Q: What is the significance of input offset voltage differences?
A: The ALD1702BSAL specifies 2 mV input offset voltage. Substitute parts OPA703UA, OPA703UA/2K5, OPA704UA, and OPA704UA/2K5 specify 160 µV, representing lower offset voltage. The OPA705UA specifies 500 µV. Lower input offset voltage provides improved DC accuracy. Substitution is valid when the substitute part's offset voltage specification is acceptable for the application's precision requirements.
Q: Are all substitute parts ROHS3 compliant?
A: ROHS3 compliance is explicitly specified for OPA703UA/2K5 and OPA704UA/2K5 variants from Texas Instruments. The ALD1702BSAL is ROHS3 compliant. ROHS3 compliance status is not specified for OPA703UA, OPA704UA, and OPA705UA variants. Applications requiring documented ROHS3 compliance should specify the /2K5 variants or verify compliance documentation with the manufacturer.
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