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AD8058AR Equivalent & Substitute Parts
Part Overview
The AD8058AR is a voltage feedback amplifier integrated circuit manufactured by Analog Devices Inc., configured as a dual-channel (2 circuit) operational amplifier in an 8-SOIC surface mount package. This device is classified as obsolete, though 3665 pieces remain available in new original stock. The AD8058AR operates across a supply voltage range of 3V to 12V with an operating temperature range of -40°C to 85°C, making it suitable for general-purpose analog signal conditioning and amplification applications.
Due to the obsolete product status of the AD8058AR, identification of equivalent and substitute parts is necessary to ensure design continuity, support long-term production requirements, and maintain supply chain reliability. Active alternatives with compatible electrical and mechanical specifications are available from multiple manufacturers.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | Voltage Feedback | — |
| Number of Circuits | 2 | — |
| Slew Rate | 1150 | V/µs |
| -3dB Bandwidth | 325 | MHz |
| Current - Input Bias | 500 | nA |
| Voltage - Input Offset | 1 | mV |
| Current - Supply | 14 | mA |
| Voltage - Supply Span (Min) | 3 | V |
| Voltage - Supply Span (Max) | 12 | V |
| Operating Temperature | -40 to 85 | °C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the AD8058AR is determined by strict alignment of electrical and mechanical parameters. The primary substitution criteria are:
Direct Packaging Equivalent: Parts must maintain the 8-SOIC surface mount package format with identical 0.154" (3.90mm) width specification to ensure PCB layout compatibility without redesign.
Amplifier Configuration: Dual-channel (2 circuit) topology is required to match the functional architecture of the AD8058AR.
Voltage Supply Compatibility: Operating supply voltage range must encompass or match the 3V to 12V specification to ensure operation across the same power distribution systems.
Operating Temperature Range: The -40°C to 85°C operating temperature window must be supported to maintain performance across the specified environmental conditions.
Amplifier Type Classification: Voltage feedback amplifier topology is the primary functional requirement for direct substitution. General purpose amplifiers represent a secondary category with different performance characteristics.
Substitute parts are grouped into two categories: direct equivalents (same amplifier type and performance class) and functional alternatives (different amplifier type but compatible package and supply specifications).
Parameter Comparison
| Part Number | Manufacturer | Product Status | Amplifier Type | Slew Rate (V/µs) | -3dB Bandwidth (MHz) | Input Bias (nA) | Input Offset (mV) | Supply Current (mA) | Supply Voltage Min (V) | Supply Voltage Max (V) | Temp Range (°C) | Package |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AD8058AR | Analog Devices Inc. | Obsolete | Voltage Feedback | 1150 | 325 | 500 | 1 | 14 | 3 | 12 | -40 to 85 | 8-SOIC |
| AD8058ARZ | Analog Devices Inc. | Active | Voltage Feedback | 1150 | 325 | 500 | 1 | 14 | 3 | 12 | -40 to 85 | 8-SOIC |
| LT1819CS8#TRPBF | Analog Devices Inc. | Active | General Purpose | 2500 | 400 | 2000 | 0.2 | 18 | 2.5 | 12.6 | 0 to 70 | 8-SOIC |
| LT1819IS8#TRPBF | Analog Devices Inc. | Active | General Purpose | 2500 | 400 | 2000 | 0.2 | 18 | 2.5 | 12.6 | -40 to 85 | 8-SOIC |
| LMH6658MA/NOPB | National Semiconductor | Active | Voltage Feedback | 700 | 270 | 5000 | 1 | 13 | 3 | 12 | -40 to 85 | 8-SOIC |
| LMH6658MAX/NOPB | Texas Instruments | Active | Voltage Feedback | 700 | 270 | 5000 | 1 | 13 | 3 | 12 | -40 to 85 | 8-SOIC |
| LMH6682MA/NOPB | Texas Instruments | Active | Voltage Feedback | 940 | 190 | 5000 | 1 | 13 | 3 | 12 | -40 to 85 | 8-SOIC |
| LMH6682MAX/NOPB | Texas Instruments | Active | Voltage Feedback | 940 | 190 | 5000 | 1 | 13 | 3 | 12 | -40 to 85 | 8-SOIC |
| MAX412BCSA+ | Analog Devices Inc./Maxim Integrated | Active | General Purpose | 4.5 | 28 | 80 | 0.12 | 5 | 4.8 | 10.5 | 0 to 70 | 8-SOIC |
| MAX412BCSA+T | Analog Devices Inc./Maxim Integrated | Active | General Purpose | 4.5 | 28 | 80 | 0.12 | 5 | 4.8 | 10.5 | 0 to 70 | 8-SOIC |
| MAX412CSA+ | Analog Devices Inc./Maxim Integrated | Active | General Purpose | 4.5 | 28 | 80 | 0.12 | 5 | 4.8 | 10.5 | 0 to 70 | 8-SOIC |
Engineering Selection Recommendations
Primary Recommendation: AD8058ARZ
The AD8058ARZ is the direct functional equivalent of the AD8058AR, manufactured by Analog Devices Inc. This part maintains identical electrical specifications across all critical parameters: 1150V/µs slew rate, 325MHz -3dB bandwidth, 500nA input bias current, and 1mV input offset voltage. The supply voltage range (3V to 12V) and operating temperature range (-40°C to 85°C) are identical. The AD8058ARZ is classified as active product status with ROHS3 compliance and REACH unaffected certification, ensuring long-term availability and regulatory compliance. The only difference from the AD8058AR is packaging format (tube versus unspecified), which does not affect electrical performance or PCB integration.
Secondary Recommendation: LMH6658MA/NOPB or LMH6658MAX/NOPB
The LMH6658 series (both National Semiconductor and Texas Instruments variants) provides voltage feedback amplifier topology with identical supply voltage range (3V to 12V) and operating temperature range (-40°C to 85°C). These parts feature rail-to-rail output capability and lower supply current (13mA versus 14mA). The slew rate is reduced to 700V/µs and -3dB bandwidth to 270MHz compared to the AD8058AR. These specifications remain suitable for applications not requiring the full 325MHz bandwidth of the original part. Both variants are active products with ROHS3 compliance.
Tertiary Recommendation: LMH6682MA/NOPB or LMH6682MAX/NOPB
The LMH6682 series offers voltage feedback amplifier topology with identical supply specifications and operating temperature range. Slew rate is 940V/µs and -3dB bandwidth is 190MHz. These parts are suitable for applications with reduced bandwidth requirements. Both variants are active products with ROHS3 compliance and identical supply voltage compatibility.
Alternative Consideration: LT1819IS8#TRPBF
The LT1819IS8#TRPBF is a general purpose amplifier with active product status and extended operating temperature range (-40°C to 85°C). This part features higher slew rate (2500V/µs) and bandwidth (400MHz) but operates at a minimum supply voltage of 2.5V and maximum of 12.6V. The input bias current is significantly higher at 2µA. This part is suitable only for applications where the general purpose amplifier topology and higher bandwidth are acceptable trade-offs.
Not Recommended: MAX412 Series
The MAX412 series (MAX412BCSA+, MAX412BCSA+T, MAX412CSA+) are general purpose amplifiers with significantly different performance characteristics. These parts feature very low slew rate (4.5V/µs), low bandwidth (28MHz), and restricted supply voltage range (4.8V to 10.5V minimum). Operating temperature range is limited to 0°C to 70°C. These specifications are incompatible with applications designed for the AD8058AR performance envelope.
Frequently Asked Questions (FAQ)
Q: Can the AD8058ARZ be used as a direct replacement for the AD8058AR without PCB modifications?
A: Yes. The AD8058ARZ is electrically and mechanically identical to the AD8058AR. Both devices use the 8-SOIC package with 0.154" (3.90mm) width, identical pin configuration, and identical electrical specifications. No PCB layout changes are required.
Q: What is the primary difference between the AD8058AR and AD8058ARZ?
A: The primary difference is product status and packaging format. The AD8058AR is obsolete, while the AD8058ARZ is active. The AD8058ARZ is supplied in tube packaging, whereas the AD8058AR packaging format is not specified. Electrical performance is identical.
Q: Are the LMH6658 and LMH6682 series suitable replacements for the AD8058AR?
A: The LMH6658 and LMH6682 series are suitable for applications where the reduced bandwidth and slew rate specifications are acceptable. The LMH6658 provides 270MHz bandwidth and 700V/µs slew rate, while the LMH6682 provides 190MHz bandwidth and 940V/µs slew rate. Both maintain voltage feedback amplifier topology, identical supply voltage range (3V to 12V), and identical operating temperature range (-40°C to 85°C). Applications requiring the full 325MHz bandwidth and 1150V/µs slew rate of the AD8058AR should use the AD8058ARZ instead.
Q: Why are the MAX412 series not recommended as substitutes?
A: The MAX412 series are general purpose amplifiers with fundamentally different performance specifications. These parts feature 4.5V/µs slew rate (versus 1150V/µs), 28MHz bandwidth (versus 325MHz), and restricted supply voltage range of 4.8V to 10.5V (versus 3V to 12V). Operating temperature range is limited to 0°C to 70°C. These specifications are incompatible with designs based on the AD8058AR performance envelope.
Q: What is the significance of the -40°C to 85°C operating temperature range?
A: The -40°C to 85°C operating temperature range indicates the device is rated for industrial and extended commercial temperature environments. Substitutes must support this same temperature range to ensure equivalent performance across the full operating envelope. The LT1819CS8#TRPBF is limited to 0°C to 70°C and is therefore not suitable for applications requiring the full industrial temperature range.
Q: Does the LT1819IS8#TRPBF provide a suitable alternative despite being a general purpose amplifier?
A: The LT1819IS8#TRPBF can serve as an alternative only for applications where general purpose amplifier topology is acceptable. This part supports the full -40°C to 85°C operating temperature range and 3V to 12V supply voltage range (with extended minimum of 2.5V). However, the input bias current is significantly higher at 2µA versus 500nA, and the slew rate and bandwidth are substantially higher. Applications sensitive to input bias current or requiring the specific voltage feedback amplifier characteristics of the AD8058AR should not use this part.
Q: What is the importance of ROHS3 compliance and REACH unaffected status?
A: ROHS3 compliance indicates the device meets Restriction of Hazardous Substances Directive requirements, restricting lead and other hazardous materials. REACH unaffected status indicates the device is not subject to Registration, Evaluation, Authorization and Restriction of Chemicals regulations. These certifications ensure regulatory compliance for products sold in European markets and support environmental and safety standards. The AD8058ARZ, LMH6658 series, and LMH6682 series all carry these certifications, while the MAX412 series also comply.
Q: Can packaging format (tube versus tape and reel) affect substitution decisions?
A: Packaging format affects supply chain logistics and handling procedures but does not affect electrical performance or PCB integration. Both tube and tape-and-reel packaging contain identical devices in the same 8-SOIC package. Selection between packaging formats depends on manufacturing assembly requirements and inventory management practices rather than technical compatibility.
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