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AD711JR Equivalent & Substitute Parts
Part Overview
The AD711JR is a J-FET operational amplifier manufactured by Analog Devices Inc., housed in an 8-SOIC surface mount package. This device is classified as obsolete, with 1204 units currently in stock. The AD711JR operates as a single-circuit J-FET amplifier with a slew rate of 20V/µs and -3dB bandwidth of 4 MHz, designed for applications requiring low input bias current and low input offset voltage characteristics.
Due to the obsolete product status of the AD711JR, equivalent and substitute parts are necessary for new designs, long-term availability assurance, and procurement flexibility. Active alternatives with comparable or enhanced electrical specifications are available from Analog Devices Inc. and Texas Instruments.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | J-FET | — |
| Number of Circuits | 1 | — |
| Slew Rate | 20 | V/µs |
| -3dB Bandwidth | 4 | MHz |
| Current - Input Bias | 15 | pA |
| Voltage - Input Offset | 300 | µV |
| Current - Supply | 2.5 | mA |
| Current - Output / Channel | 25 | mA |
| Voltage - Supply Span (Min) | 9 | V |
| Voltage - Supply Span (Max) | 36 | V |
| Operating Temperature | 0 to 70 | °C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
Substitute Part Grouping Explanation
Substitution of the AD711JR is determined by strict alignment of the following electrical and mechanical parameters:
Primary Substitution Criteria:
- Amplifier Type: J-FET
- Number of Circuits: 1
- Package / Case: 8-SOIC (0.154", 3.90mm Width)
- Mounting Type: Surface Mount
- Voltage - Supply Span: Minimum 9V, Maximum 36V (or compatible range)
- Operating Temperature: 0°C to 70°C (or extended range)
Secondary Compatibility Parameters:
- Slew Rate: 20V/µs or greater
- -3dB Bandwidth: 4 MHz or greater
- Current - Input Bias: 15 pA or lower
- Voltage - Input Offset: 300 µV or lower
- Current - Supply: 2.5 mA or lower
- Current - Output / Channel: 25 mA or greater
Substitute parts are grouped into two categories: Direct Equivalents (identical electrical specifications and packaging) and Similar Alternatives (compatible package and supply voltage with enhanced or comparable performance characteristics).
Parameter Comparison
| Part Number | Manufacturer | Product Status | Slew Rate (V/µs) | -3dB Bandwidth (MHz) | Input Bias (pA) | Input Offset (µV) | Supply Current (mA) | Output Current (mA) | Supply Span Min (V) | Supply Span Max (V) | Temp Range (°C) | Package |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AD711JR | Analog Devices Inc. | Obsolete | 20 | 4 | 15 | 300 | 2.5 | 25 | 9 | 36 | 0 to 70 | 8-SOIC |
| AD711JRZ | Analog Devices Inc. | Active | 20 | 4 | 15 | 300 | 2.5 | 25 | 9 | 36 | 0 to 70 | 8-SOIC |
| ADA4610-1ARZ | Analog Devices Inc. | Active | 61 | 9.5 | 5 | 400 | 1.6 | 79 | 9 | 30 | -40 to 125 | 8-SOIC |
| LT1055S8 | Analog Devices Inc. | Active | 12 | 4.5 | 30 | 500 | 2.8 | — | 10 | 36 | 0 to 70 | 8-SOIC |
| LT1792CS8#PBF | Analog Devices Inc. | Active | 3.4 | 5.6 | 300 | 200 | 4.2 | — | 9 | 40 | 0 to 70 | 8-SOIC |
| LT1792CS8#TRPBF | Analog Devices Inc. | Active | 3.4 | 5.6 | 300 | 200 | 4.2 | — | 9 | 40 | 0 to 70 | 8-SOIC |
| LT1792IS8#PBF | Analog Devices Inc. | Active | 3.4 | 5.6 | 300 | 200 | 4.2 | — | 9 | 40 | -40 to 85 | 8-SOIC |
| LT1792IS8#TRPBF | Analog Devices Inc. | Active | 3.4 | 5.6 | 300 | 200 | 4.2 | — | 9 | 40 | -40 to 85 | 8-SOIC |
| LF356M | Texas Instruments | Last Time Buy | 12 | 5 | 30 | 3000 | 5 | — | 30 | 30 | 0 to 70 | 8-SOIC |
| LF356M/NOPB | Texas Instruments | Active | 12 | 5 | 30 | 3000 | 5 | — | 30 | 30 | 0 to 70 | 8-SOIC |
| LF356MX/NOPB | Texas Instruments | Active | 12 | 5 | 30 | 3000 | 5 | — | 30 | 30 | 0 to 70 | 8-SOIC |
Engineering Selection Recommendations
Direct Equivalent (Recommended for Replacement):
The AD711JRZ is the direct active equivalent of the AD711JR. Both parts share identical electrical specifications: 20V/µs slew rate, 4 MHz bandwidth, 15 pA input bias current, and 300 µV input offset voltage. The AD711JRZ is manufactured by Analog Devices Inc. with Active product status and ROHS3 compliance, making it the primary choice for direct substitution in existing designs. The AD711JRZ is available in Tube packaging with 10,158 units in stock.
Enhanced Performance Alternative:
The ADA4610-1ARZ offers superior electrical performance with rail-to-rail output capability, 61V/µs slew rate, 9.5 MHz bandwidth, and lower input bias current (5 pA). This part maintains 8-SOIC packaging and operates within the 9V to 30V supply range. The ADA4610-1ARZ is Active status with ROHS3 compliance and extended operating temperature range (-40°C to 125°C). Selection of this part is appropriate for applications requiring enhanced speed and precision.
Compatible Alternatives with Trade-offs:
The LT1055S8 (Analog Devices Inc., Active) operates within the 10V to 36V supply range with 4.5 MHz bandwidth. The LT1792 series (Analog Devices Inc., Active) provides extended supply voltage range (9V to 40V) and lower input offset voltage (200 µV) but with reduced slew rate (3.4V/µs).
The LF356M/NOPB and LF356MX/NOPB (Texas Instruments, Active) are J-FET amplifiers in 8-SOIC packaging with 5 MHz bandwidth. These parts require fixed ±15V supply voltage (30V span minimum and maximum) and exhibit higher input offset voltage (3 mV), making them suitable only for applications with symmetric dual supply configurations.
Compliance and Availability:
All recommended active substitutes carry ROHS3 compliance and REACH Unaffected status. The AD711JRZ provides the highest inventory availability (10,158 units) and maintains identical specifications to the obsolete AD711JR.
Frequently Asked Questions (FAQ)
Q: Can the AD711JRZ be used as a direct replacement for the AD711JR?
A: Yes. The AD711JRZ is electrically and mechanically identical to the AD711JR. Both parts feature J-FET amplifier topology, 8-SOIC packaging, 20V/µs slew rate, 4 MHz bandwidth, 15 pA input bias current, and 300 µV input offset voltage. The primary difference is product status: AD711JRZ is Active while AD711JR is Obsolete. The AD711JRZ is the recommended direct replacement.
Q: What is the difference between AD711JRZ and ADA4610-1ARZ?
A: The ADA4610-1ARZ provides enhanced performance specifications: 61V/µs slew rate versus 20V/µs, 9.5 MHz bandwidth versus 4 MHz, and 5 pA input bias current versus 15 pA. The ADA4610-1ARZ includes rail-to-rail output capability and operates over -40°C to 125°C. However, the maximum supply voltage is 30V compared to 36V for the AD711JR. Selection depends on whether the application requires higher speed and precision or the full 36V supply capability.
Q: Are the LT1792 variants suitable replacements for the AD711JR?
A: The LT1792 series maintains 8-SOIC packaging and J-FET amplifier topology with compatible supply voltage range (9V to 40V). However, the LT1792 exhibits significantly reduced slew rate (3.4V/µs versus 20V/µs) and higher supply current (4.2 mA versus 2.5 mA). The LT1792 is suitable only for applications where slew rate is not a critical parameter.
Q: Can the LF356M/NOPB replace the AD711JR?
A: The LF356M/NOPB is not a direct replacement. While both are J-FET amplifiers in 8-SOIC packaging, the LF356M/NOPB requires a fixed ±15V supply (30V span) and cannot operate at the 36V maximum supply voltage of the AD711JR. Additionally, the LF356M/NOPB exhibits significantly higher input offset voltage (3 mV versus 300 µV). Use the LF356M/NOPB only in applications with symmetric dual supply requirements.
Q: What packaging options are available for the AD711JRZ?
A: The AD711JRZ is supplied in Tube packaging. Alternative packaging formats are not listed in the active product portfolio for this exact part number. Verify packaging requirements with the supplier before procurement.
Q: Are all substitute parts ROHS3 compliant?
A: All active substitute parts listed (AD711JRZ, ADA4610-1ARZ, LT1055S8, LT1792 series, LF356M/NOPB, and LF356MX/NOPB) carry ROHS3 compliance certification. The LF356M (Last Time Buy status) is RoHS non-compliant. For new designs, select only ROHS3-compliant alternatives.
Q: What is the inventory status of substitute parts?
A: The AD711JRZ has the highest inventory availability with 10,158 units in stock. The LF356MX/NOPB has 90,234 units available. The ADA4610-1ARZ has 1,310 units, and LT1055S8 has 6,881 units. Verify current inventory with the supplier before finalizing procurement decisions.
Q: Can I use the ADA4610-1ARZ in a circuit designed for the AD711JR without modifications?
A: The ADA4610-1ARZ is pin-compatible in 8-SOIC packaging and operates within overlapping supply voltage ranges (9V to 30V). However, the maximum supply voltage is limited to 30V versus 36V for the AD711JR. If the circuit operates at supply voltages above 30V, the ADA4610-1ARZ cannot be used. Additionally, the enhanced slew rate and bandwidth may affect circuit behavior in applications with specific frequency response requirements. Circuit validation is necessary.
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