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AD706JR Equivalent & Substitute Parts
Part Overview
The AD706JR is a general-purpose operational amplifier manufactured by Analog Devices Inc., configured as a dual-circuit (2-channel) device in an 8-SOIC surface-mount package. This part is classified as obsolete, with 1,387 units currently in stock. The AD706JR operates across a wide supply voltage range of 4 V to 36 V and is suitable for applications requiring low input bias current and moderate bandwidth performance. Due to its obsolete status, equivalent and substitute parts are necessary for new designs, long-term availability assurance, and performance optimization in specific application requirements.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | General Purpose | — |
| Number of Circuits | 2 | — |
| Slew Rate | 0.15 | V/µs |
| Gain Bandwidth Product | 800 | kHz |
| -3dB Bandwidth | 800 | kHz |
| Current - Input Bias | 50 | pA |
| Voltage - Input Offset | 30 | µV |
| Current - Supply | 750 | µA |
| Current - Output / Channel | 15 | mA |
| Voltage - Supply Span (Min) | 4 | V |
| Voltage - Supply Span (Max) | 36 | V |
| Operating Temperature | 0 to 70 | °C |
| Mounting Type | Surface Mount | — |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the AD706JR is determined by strict adherence to the following electrical and mechanical parameters:
Primary Substitution Criteria:
- Number of circuits: 2 channels required
- Package type: 8-SOIC surface-mount configuration
- Slew rate: 0.15 V/µs or greater
- Gain bandwidth product: 800 kHz or greater
- Supply voltage range: Minimum 4 V to maximum 36 V
- Input bias current: 50 pA or lower
- Input offset voltage: 30 µV or lower
- Output current per channel: 15 mA or greater
- Operating temperature: 0°C to 70°C minimum coverage
Direct Equivalent: The AD706JRZ is an identical electrical and functional equivalent with active product status and improved packaging availability (Tube). All electrical parameters match the AD706JR specification exactly.
Similar Substitutes: Parts are classified as similar when they maintain the dual-circuit 8-SOIC package configuration and meet or exceed the primary electrical performance criteria, though they may differ in specific parameters such as slew rate, bandwidth, supply current, or operating temperature range. These parts are suitable for applications where the AD706JR performance envelope is acceptable or where enhanced specifications provide design margin.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Slew Rate (V/µs) | GBW (kHz) | Input Bias (pA) | Input Offset (µV) | Supply Current (µA) | Output Current (mA) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Package |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AD706JR | Analog Devices | Obsolete | 0.15 | 800 | 50 | 30 | 750 | 15 | 4 | 36 | 0 to 70 | 8-SOIC |
| AD706JRZ | Analog Devices | Active | 0.15 | 800 | 50 | 30 | 750 | 15 | 4 | 36 | 0 to 70 | 8-SOIC |
| AD8622ARZ-REEL | Analog Devices | Active | 0.48 | 560 | 45 | 10 | 215 | 40 | 5 | 30 | -40 to 125 | 8-SOIC |
| LT1112IS8 | Analog Devices | Active | 0.30 | 750 | 80 | 25 | 350 | — | 2 | 40 | -40 to 85 | 8-SOIC |
| LT1112IS8#PBF | Analog Devices | Active | 0.30 | 750 | 80 | 25 | 350 | — | 2 | 40 | -40 to 85 | 8-SOIC |
| LT1112MPS8#PBF | Analog Devices | Active | 0.30 | 750 | 80 | 25 | 350 | — | 2 | 40 | -55 to 125 | 8-SOIC |
| LT1112MPS8#TRPBF | Analog Devices | Active | 0.30 | 750 | 80 | 25 | 350 | — | 2 | 40 | -55 to 125 | 8-SOIC |
| LT1112S8 | Analog Devices | Active | 0.27 | 750 | 90 | 45 | 370 | — | 2 | 40 | -40 to 85 | 8-SOIC |
| LT2078ACS8#PBF | Analog Devices | Active | 0.07 | 200 | 6000 | 50 | 46 | — | 2.2 | 36 | 0 to 70 | 8-SOIC |
| LT2078ACS8#TRPBF | Analog Devices | Active | 0.07 | 200 | 6000 | 50 | 46 | — | 2.2 | 36 | 0 to 70 | 8-SOIC |
| LT2078AIS8 | Analog Devices | Active | 0.07 | 200 | 6000 | 50 | 46 | — | 2.2 | 36 | -40 to 85 | 8-SOIC |
Engineering Selection Recommendations
Direct Replacement (Identical Electrical Performance):
The AD706JRZ is the recommended direct replacement for the AD706JR. This part maintains identical electrical specifications across all measured parameters while offering active product status and improved long-term availability. The AD706JRZ is available in Tube packaging, providing a suitable alternative to the original part's packaging configuration.
Active Product Alternatives (Enhanced Performance):
The LT1112 series (LT1112IS8, LT1112IS8#PBF, LT1112MPS8#PBF, LT1112MPS8#TRPBF, LT1112S8) represents active alternatives with comparable bandwidth performance (750 kHz) and lower supply current consumption (350 µA to 370 µA). These parts extend the minimum supply voltage to 2 V and maximum to 40 V, providing broader supply compatibility. The LT1112MPS8 variants support extended operating temperature ranges (-55°C to 125°C), suitable for industrial and military applications.
Specialized Application Alternatives:
The AD8622ARZ-REEL offers rail-to-rail output capability with enhanced slew rate (0.48 V/µs) and higher output current (40 mA per channel), suitable for applications requiring improved dynamic performance and output drive capability. However, this part operates within a narrower supply voltage range (5 V to 30 V) and reduced maximum supply voltage compared to the AD706JR.
The LT2078 series (LT2078ACS8#PBF, LT2078ACS8#TRPBF, LT2078AIS8) provides ultra-low input bias current (6 nA) and significantly reduced supply current (46 µA), optimized for precision instrumentation and low-power applications. These parts operate within the AD706JR supply range (2.2 V to 36 V) and are suitable for battery-powered and energy-constrained designs.
Compliance and Certification:
All recommended substitute parts carry ROHS3 compliance and REACH Unaffected status, ensuring regulatory alignment with current environmental and hazardous substance directives. All parts maintain MSL 1 (Unlimited) moisture sensitivity classification.
Frequently Asked Questions (FAQ)
Q: Can the AD706JRZ be used as a direct replacement for the AD706JR?
A: Yes. The AD706JRZ is electrically and functionally identical to the AD706JR across all specified parameters. The primary difference is product status (Active vs. Obsolete) and packaging format (Tube). Pin configuration, electrical performance, and package dimensions are identical.
Q: What is the key difference between the AD706JR and the LT1112 series?
A: The LT1112 series maintains comparable bandwidth (750 kHz) and dual-circuit configuration but operates with lower supply current (350 µA vs. 750 µA) and extends the minimum supply voltage to 2 V. The LT1112 series has higher input bias current (80 pA to 90 pA) and slightly higher input offset voltage (25 µV to 45 µV) compared to the AD706JR (50 pA and 30 µV respectively).
Q: Is the AD8622ARZ-REEL suitable for direct replacement in all AD706JR applications?
A: The AD8622ARZ-REEL is not a direct replacement. While it maintains the dual-circuit 8-SOIC package and general-purpose amplifier classification, it operates within a narrower supply voltage range (5 V to 30 V maximum vs. 36 V for the AD706JR). Applications requiring the full 36 V supply capability cannot use this part. The AD8622ARZ-REEL is suitable only for applications operating within its specified supply range and where enhanced slew rate and output current are beneficial.
Q: What are the advantages of the LT2078 series over the AD706JR?
A: The LT2078 series provides ultra-low input bias current (6 nA vs. 50 pA) and significantly reduced supply current consumption (46 µA vs. 750 µA). These characteristics make the LT2078 series optimal for precision instrumentation, low-power battery-operated designs, and applications sensitive to input bias current effects. The trade-off is reduced bandwidth (200 kHz vs. 800 kHz) and lower slew rate (0.07 V/µs vs. 0.15 V/µs).
Q: Are all substitute parts available in the same 8-SOIC package?
A: Yes. All substitute parts listed are configured in the 8-SOIC (0.154", 3.90mm Width) surface-mount package, ensuring mechanical and footprint compatibility with the AD706JR. Packaging format variations (Tube, Cut Tape, Tape & Reel) do not affect electrical performance or PCB mounting compatibility.
Q: Which substitute part offers the widest operating temperature range?
A: The LT1112MPS8#PBF and LT1112MPS8#TRPBF variants offer the widest operating temperature range (-55°C to 125°C), compared to the AD706JR specification (0°C to 70°C). These parts are suitable for industrial, automotive, and military applications requiring extended temperature performance.
Q: Can the AD706JR be replaced with the LT1112S8 in precision applications?
A: The LT1112S8 is suitable for general-purpose applications but exhibits higher input offset voltage (45 µV vs. 30 µV) and higher input bias current (90 pA vs. 50 pA) than the AD706JR. For precision applications where input offset and bias current are critical specifications, the AD706JRZ or LT2078 series are more appropriate selections.
Q: What packaging options are available for the AD706JRZ?
A: The AD706JRZ is available in Tube packaging. For alternative packaging formats (Cut Tape, Tape & Reel), the LT1112 and LT2078 series offer multiple packaging options including Tube, Cut Tape & Digi-Reel, and Tape & Reel configurations.
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