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AD712TRZ-EP Equivalent & Substitute Parts
Part Overview
The AD712TRZ-EP is a J-FET input operational amplifier manufactured by Analog Devices Inc., configured as a dual-channel (2 circuit) device in an 8-SOIC surface mount package. This component is classified as a linear amplifier and is currently in active product status with 50,400 units in stock. The AD712TRZ-EP is designed for applications requiring low input bias current, moderate bandwidth, and wide supply voltage operation. Equivalent and substitute parts are identified based on matching electrical performance parameters, package compatibility, and functional equivalence within the operational amplifier category.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Amplifier Type | J-FET | — |
| Number of Circuits | 2 | — |
| Slew Rate | 20 | V/µs |
| Gain Bandwidth Product | 3 | MHz |
| -3dB Bandwidth | 4 | MHz |
| Current - Input Bias | 25 | pA |
| Voltage - Input Offset | 300 | µV |
| Current - Supply | 5 | mA |
| Current - Output / Channel | 25 | mA |
| Voltage - Supply Span (Min) | 9 | V |
| Voltage - Supply Span (Max) | 36 | V |
| Operating Temperature | -55 to 125 | °C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the AD712TRZ-EP is determined by the following critical parameters: amplifier type (J-FET vs. General Purpose vs. CMOS), number of circuits (dual vs. single), package type (8-SOIC compatibility), slew rate, gain bandwidth product, input bias current, supply voltage range, and operating temperature range. The AD712TRZ-EP is a dual-channel J-FET amplifier with a 20 V/µs slew rate and 3 MHz gain bandwidth product. Substitute parts must maintain compatibility with these electrical characteristics and the 8-SOIC package footprint.
Parts are grouped into the following categories:
J-FET Amplifiers (Single Circuit): ISL28110FBZ-T7A operates as a single-channel J-FET device with enhanced specifications (12.5 MHz bandwidth, 20 V/µs slew rate, rail-to-rail output) but differs in circuit count and output type.
General Purpose Amplifiers (Dual Circuit): MC33072DR2G, MC34072DR2G, MC34072VDR2G, NCV33072DR2G, and NCV33072ADR2G are dual-channel general purpose amplifiers with similar package and supply voltage ranges but different amplifier topology (not J-FET).
General Purpose Amplifiers (Dual Circuit, STMicroelectronics): MC4558CDT and MC4558IDT are dual-channel general purpose amplifiers with 8-SOIC packaging and comparable electrical performance.
General Purpose Amplifiers (Single Circuit): ISL28177FBZ is a single-channel general purpose amplifier with reduced bandwidth and different electrical characteristics.
CMOS Amplifiers (Quad Circuit): LMC6044IMX/NOPB is a four-channel CMOS amplifier in a 14-SOIC package with significantly different electrical specifications and package footprint.
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Number of Circuits | Slew Rate (V/µs) | GBW (MHz) | Input Bias (pA) | Input Offset (µV) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Package |
|---|---|---|---|---|---|---|---|---|---|---|---|
| AD712TRZ-EP | Analog Devices | J-FET | 2 | 20 | 3 | 25 | 300 | 9 | 36 | -55 to 125 | 8-SOIC |
| ISL28110FBZ-T7A | Renesas | J-FET | 1 | 20 | 12.5 | 2 | 300 | 9 | 40 | -40 to 125 | 8-SOIC |
| ISL28177FBZ | Renesas | General Purpose | 1 | 0.2 | 0.6 | 200 | 150 | 6 | 40 | -40 to 125 | 8-SOIC |
| MC33072DR2G | onsemi | General Purpose | 2 | 13 | 4.5 | 100000 | 1000 | 3 | 44 | -40 to 85 | 8-SOIC |
| MC34072DR2G | onsemi | General Purpose | 2 | 13 | 4.5 | 100000 | 1000 | 3 | 44 | 0 to 70 | 8-SOIC |
| MC34072VDR2G | onsemi | General Purpose | 2 | 13 | 4.5 | 100000 | 1000 | 3 | 44 | -40 to 125 | 8-SOIC |
| MC4558CDT | STMicroelectronics | General Purpose | 2 | 2.2 | 5.5 | 50000 | 1000 | 4 | 40 | 0 to 70 | 8-SOIC |
| MC4558IDT | STMicroelectronics | General Purpose | 2 | 2.2 | 5.5 | 50000 | 1000 | 4 | 40 | -40 to 105 | 8-SOIC |
| NCV33072ADR2G | onsemi | General Purpose | 2 | 13 | 4.5 | 100000 | 500 | 3 | 44 | -40 to 150 | 8-SOIC |
| NCV33072DR2G | onsemi | General Purpose | 2 | 13 | 4.5 | 100000 | 1000 | 3 | 44 | -40 to 125 | 8-SOIC |
| LMC6044IMX/NOPB | Texas Instruments | CMOS | 4 | 0.02 | 0.1 | 0.002 | 1000 | 4.5 | 15.5 | -40 to 85 | 14-SOIC |
Engineering Selection Recommendations
Direct Functional Equivalents (Dual-Channel, 8-SOIC Package):
The MC34072VDR2G and NCV33072DR2G are the closest functional equivalents to the AD712TRZ-EP. Both devices provide dual-channel amplification in an 8-SOIC package with operating temperature ranges extending to -40°C to 125°C. MC34072VDR2G maintains the same temperature range as the AD712TRZ-EP and is suitable for applications where general purpose amplification replaces J-FET input requirements. NCV33072DR2G includes automotive-grade qualification (AEC-Q100) and is appropriate for automotive and industrial applications requiring extended temperature operation.
High-Performance J-FET Alternative (Single-Channel):
The ISL28110FBZ-T7A is a J-FET amplifier from Renesas Electronics with superior gain bandwidth product (12.5 MHz vs. 3 MHz) and lower input bias current (2 pA vs. 25 pA). This device operates as a single-channel amplifier and requires two devices to replace the dual-channel AD712TRZ-EP. The ISL28110FBZ-T7A is suitable for applications requiring enhanced bandwidth and ultra-low input bias current within the same 8-SOIC package footprint.
General Purpose Alternatives (Dual-Channel, 8-SOIC Package):
MC33072DR2G, MC4558IDT, and MC4558CDT provide dual-channel general purpose amplification in 8-SOIC packages. MC4558IDT offers the widest temperature range (-40°C to 105°C) among the STMicroelectronics options. These devices are suitable for applications where J-FET input characteristics are not critical and general purpose amplifier performance is acceptable.
Automotive-Grade Options:
NCV33072ADR2G and NCV33072DR2G are automotive-qualified devices (AEC-Q100) with dual-channel configuration in 8-SOIC packages. NCV33072ADR2G extends the operating temperature to 150°C (junction temperature), making it suitable for high-temperature automotive and industrial applications.
Not Recommended for Direct Substitution:
LMC6044IMX/NOPB is a quad-channel CMOS amplifier in a 14-SOIC package with significantly different electrical characteristics (0.02 V/µs slew rate, 100 kHz bandwidth, 4.5 to 15.5 V supply range). This device is not suitable as a direct substitute due to package incompatibility and fundamentally different performance specifications.
ISL28177FBZ is a single-channel general purpose amplifier with substantially reduced bandwidth (600 kHz) and slew rate (0.2 V/µs), making it unsuitable for applications requiring the AD712TRZ-EP's performance level.
All substitute parts listed are ROHS3 compliant and REACH unaffected, maintaining regulatory compliance with the original AD712TRZ-EP.
Frequently Asked Questions (FAQ)
Q: Can the ISL28110FBZ-T7A replace the AD712TRZ-EP in a dual-channel application?
A: The ISL28110FBZ-T7A is a single-channel device. Two ISL28110FBZ-T7A devices are required to replace one AD712TRZ-EP in a dual-channel configuration. The ISL28110FBZ-T7A offers superior bandwidth (12.5 MHz vs. 3 MHz) and lower input bias current (2 pA vs. 25 pA), making it suitable for high-performance applications where board space permits dual-device implementation.
Q: What is the primary difference between the AD712TRZ-EP and the MC34072VDR2G?
A: The AD712TRZ-EP is a J-FET input amplifier with 25 pA input bias current, while the MC34072VDR2G is a general purpose amplifier with 100 nA input bias current. The AD712TRZ-EP provides superior input impedance and lower input bias current, making it preferable for high-impedance signal sources. The MC34072VDR2G offers comparable slew rate (13 V/µs vs. 20 V/µs) and higher gain bandwidth product (4.5 MHz vs. 3 MHz). Both devices operate across -40°C to 125°C and are packaged in 8-SOIC.
Q: Are all substitute parts compatible with the 8-SOIC package footprint?
A: Nine of the ten substitute parts are compatible with the 8-SOIC package footprint. The LMC6044IMX/NOPB is packaged in 14-SOIC and is not pin-compatible with the AD712TRZ-EP. All other substitute parts use the standard 8-SOIC (0.154", 3.90mm width) package and are directly compatible with existing PCB layouts designed for the AD712TRZ-EP.
Q: Which substitute part offers the widest operating temperature range?
A: The NCV33072ADR2G offers the widest operating temperature range, extending to 150°C (junction temperature). This automotive-qualified device is suitable for high-temperature applications. Among commercial-grade devices, the AD712TRZ-EP, MC34072VDR2G, and NCV33072DR2G all operate across -40°C to 125°C.
Q: What is the significance of the AEC-Q100 qualification on NCV33072 devices?
A: AEC-Q100 qualification indicates that NCV33072ADR2G and NCV33072DR2G meet automotive industry reliability and quality standards. These devices are suitable for automotive applications and environments requiring enhanced reliability testing and documentation. The qualification does not affect electrical performance but provides assurance of manufacturing consistency and long-term reliability for automotive and industrial applications.
Q: Can the MC4558CDT replace the AD712TRZ-EP in all applications?
A: The MC4558CDT is a general purpose amplifier with different electrical characteristics than the AD712TRZ-EP. The MC4558CDT has lower slew rate (2.2 V/µs vs. 20 V/µs), lower gain bandwidth product (5.5 MHz vs. 3 MHz), and significantly higher input bias current (50 nA vs. 25 pA). The MC4558CDT is suitable for applications where these performance differences are acceptable. The MC4558CDT operates across 0°C to 70°C, which is narrower than the AD712TRZ-EP's -55°C to 125°C range.
Q: What is the difference between MC34072DR2G and MC34072VDR2G?
A: Both devices are dual-channel general purpose amplifiers in 8-SOIC packages with identical electrical specifications. The primary difference is operating temperature range: MC34072DR2G operates across 0°C to 70°C, while MC34072VDR2G operates across -40°C to 125°C. For applications requiring extended low-temperature operation, MC34072VDR2G is the appropriate selection.
Q: Why is the LMC6044IMX/NOPB not recommended as a substitute?
A: The LMC6044IMX/NOPB differs from the AD712TRZ-EP in multiple critical parameters: it is a quad-channel CMOS amplifier (vs. dual-channel J-FET), packaged in 14-SOIC (vs. 8-SOIC), with significantly reduced slew rate (0.02 V/µs vs. 20 V/µs), lower bandwidth (100 kHz vs. 3 MHz), and narrower supply voltage range (4.5 to 15.5 V vs. 9 to 36 V). The package incompatibility and fundamental performance differences make this device unsuitable for direct substitution.
Q: Are all substitute parts RoHS3 compliant?
A: Yes, all substitute parts listed are ROHS3 compliant and REACH unaffected, maintaining regulatory compliance with the original AD712TRZ-EP for use in regulated markets and applications.
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