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TJM4558CDT Equivalent & Substitute Parts
Part Overview
The TJM4558CDT is a general-purpose operational amplifier manufactured by STMicroelectronics, configured as a dual-circuit (2-channel) device in an 8-SOIC surface-mount package. This component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. The TJM4558CDT serves applications requiring dual operational amplification with moderate bandwidth and slew rate characteristics. Substitute parts are identified when equivalent electrical performance parameters and identical package specifications are available from alternative manufacturers, enabling design flexibility and supply chain continuity.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer Part Number | TJM4558CDT | — |
| Manufacturer | STMicroelectronics | — |
| Category | Linear, Amplifiers | — |
| Amplifier Type | General Purpose | — |
| Number of Circuits | 2 | — |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| Mounting Type | Surface Mount | — |
| Slew Rate | 2.2 | V/µs |
| Gain Bandwidth Product | 5.5 | MHz |
| Current - Input Bias | 50 | nA |
| Voltage - Input Offset | 1 | mV |
| Current - Supply | 2.3 | mA |
| Current - Output / Channel | 20 | mA |
| Voltage - Supply Span (Min) | 44 | V |
| Voltage - Supply Span (Max) | 44 | V |
| Operating Temperature | 0 to 70 | °C |
| Product Status | Active | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the TJM4558CDT is determined by strict alignment of the following critical parameters:
Package Compatibility: All substitute parts must use the 8-SOIC (0.154", 3.90mm Width) surface-mount package to ensure mechanical and electrical compatibility with existing PCB layouts.
Circuit Configuration: The dual-circuit (2-channel) operational amplifier topology is mandatory for functional equivalence.
Electrical Performance Envelope: Substitute parts must operate within the specified voltage supply range, support the required output current per channel, and maintain input bias current and offset voltage characteristics suitable for the application.
Compliance & Certification: All substitute parts must maintain RoHS3 compliance and MSL rating of 1 (Unlimited) to ensure regulatory and manufacturing process compatibility.
Amplifier Classification: Both general-purpose and J-FET amplifier types are acceptable substitutes, as both classifications support dual-channel operational amplification in the 8-SOIC package with compatible electrical characteristics.
Substitute parts are grouped into two categories: General Purpose Amplifiers (AS358 series) and J-FET Amplifiers (AD712 and ADTL082 series). Each category provides electrical performance suitable for applications previously served by the TJM4558CDT.
Parameter Comparison
| Parameter | TJM4558CDT | AD712JRZ-REEL | AD712KRZ | AD712KRZ-REEL7 | AD712TRZ-EP | AD712TRZ-EP-R7 | ADTL082ARZ | ADTL082ARZ-REEL | ADTL082ARZ-REEL7 | AS358MTR-E1 | AS358MTR-G1 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | STMicroelectronics | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Diodes Incorporated | Diodes Incorporated |
| Amplifier Type | General Purpose | J-FET | J-FET | J-FET | J-FET | J-FET | J-FET | J-FET | J-FET | General Purpose | General Purpose |
| Number of Circuits | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Package / Case | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Slew Rate (V/µs) | 2.2 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | — | — |
| Gain Bandwidth Product (MHz) | 5.5 | — | — | — | 3 | 3 | 5 | 5 | 5 | — | — |
| Current - Input Bias (nA/pA) | 50 nA | 25 pA | 25 pA | 25 pA | 25 pA | 25 pA | 2 pA | 2 pA | 2 pA | 20 nA | 20 nA |
| Voltage - Input Offset (mV/µV) | 1 mV | 300 µV | 300 µV | 300 µV | 300 µV | 300 µV | 1.5 mV | 1.5 mV | 1.5 mV | 2 mV | 2 mV |
| Current - Supply (mA) | 2.3 | 5 | 5 | 5 | 5 | 5 | 1.2 (x2 Channels) | 1.2 (x2 Channels) | 1.2 (x2 Channels) | 0.7 (x2 Channels) | 0.7 (x2 Channels) |
| Current - Output / Channel (mA) | 20 | 25 | 25 | 25 | 25 | 25 | 27 | 27 | 27 | 40 | 40 |
| Voltage - Supply Span Min (V) | 44 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 3 | 3 |
| Voltage - Supply Span Max (V) | 44 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 |
| Operating Temperature (°C) | 0 to 70 | 0 to 70 | 0 to 70 | 0 to 70 | -55 to 125 | -55 to 125 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 85 | -40 to 85 |
| Product Status | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 3 (168 Hours) | 3 (168 Hours) |
Engineering Selection Recommendations
Primary Substitutes (Highest Compatibility):
The AD712 series (AD712JRZ-REEL, AD712KRZ, AD712KRZ-REEL7, AD712TRZ-EP, AD712TRZ-EP-R7) from Analog Devices Inc. provides direct functional substitution for the TJM4558CDT. All AD712 variants maintain the 8-SOIC package, dual-circuit configuration, and Active product status with ROHS3 compliance and MSL 1 rating. The AD712 series offers superior slew rate (20 V/µs versus 2.2 V/µs) and lower input bias current (25 pA versus 50 nA), making these parts suitable for applications requiring enhanced dynamic performance. The AD712TRZ-EP and AD712TRZ-EP-R7 variants extend the operating temperature range to -55°C to 125°C, providing broader environmental coverage than the base TJM4558CDT specification.
Secondary Substitutes (Extended Temperature Range):
The ADTL082 series (ADTL082ARZ, ADTL082ARZ-REEL, ADTL082ARZ-REEL7) from Analog Devices Inc. offers J-FET amplifier technology with the same 8-SOIC package and dual-circuit configuration. ADTL082 variants provide the lowest input bias current (2 pA) among all substitutes, superior gain bandwidth product (5 MHz), and extended operating temperature range (-40°C to 125°C). These parts maintain ROHS3 compliance and MSL 1 rating. The ADTL082 series is suitable for precision applications requiring minimal input bias current and wider temperature operation.
Alternative Substitutes (General Purpose, Lower Supply Voltage):
The AS358 series (AS358MTR-E1, AS358MTR-G1) from Diodes Incorporated provides general-purpose dual operational amplification in the 8-SOIC package with Active product status and ROHS3 compliance. The AS358 series operates from a minimum supply voltage of 3 V (versus 44 V for TJM4558CDT), enabling single-supply applications. Output current per channel (40 mA) exceeds the TJM4558CDT specification. However, AS358 variants carry MSL 3 rating (168 Hours) rather than MSL 1, and operating temperature range is limited to -40°C to 85°C. The AS358 series is suitable for low-voltage, general-purpose applications where the MSL 3 rating and reduced temperature range are acceptable.
Packaging Considerations:
All substitute parts are available in multiple packaging formats: Cut Tape (CT) & Digi-Reel®, Tube, and Tape & Reel (TR). Selection of packaging format depends on manufacturing process requirements and volume specifications. The 8-SOIC package dimensions (0.154", 3.90mm Width) are identical across all parts, ensuring PCB layout compatibility.
Frequently Asked Questions (FAQ)
Q: Can the AD712 series directly replace the TJM4558CDT in existing designs?
A: Yes. The AD712 series maintains identical 8-SOIC package dimensions, dual-circuit configuration, and surface-mount compatibility. All AD712 variants are Active products with ROHS3 compliance and MSL 1 rating. Electrical performance is superior in slew rate and input bias current. No PCB modifications are required for mechanical substitution. Verify application-specific performance requirements, particularly regarding supply voltage range and operating temperature.
Q: What is the primary difference between the AD712 and ADTL082 substitutes?
A: Both are J-FET amplifiers in 8-SOIC packages with dual circuits. The ADTL082 provides significantly lower input bias current (2 pA versus 25 pA for AD712), higher gain bandwidth product (5 MHz versus 3-4 MHz for AD712), and extended operating temperature range (-40°C to 125°C versus 0°C to 70°C for standard AD712). The ADTL082 is preferred for precision, low-bias-current applications. The AD712 offers higher slew rate (20 V/µs) and is suitable for general-purpose dual amplification.
Q: Why do the AS358 substitutes have MSL 3 rating instead of MSL 1?
A: Moisture sensitivity level is determined by component manufacturing process and material composition. The AS358 series from Diodes Incorporated uses a manufacturing process that results in MSL 3 classification (168-hour floor life), whereas the TJM4558CDT and Analog Devices substitutes use processes resulting in MSL 1 (unlimited floor life). MSL 3 components require controlled storage and handling procedures. Verify manufacturing and assembly process compatibility before selecting AS358 variants.
Q: Are there supply voltage limitations when substituting the TJM4558CDT?
A: Yes. The TJM4558CDT operates at a fixed 44 V supply span. The AD712 series operates from 9 V to 36 V, the ADTL082 series from 8 V to 36 V, and the AS358 series from 3 V to 36 V. If the application requires 44 V supply operation, only the TJM4558CDT is suitable. For applications operating within 8 V to 36 V range, all Analog Devices substitutes are compatible. For applications requiring 3 V to 36 V operation, the AS358 series is required.
Q: What packaging options are available for each substitute part?
A: All substitute parts are available in multiple packaging formats: Cut Tape (CT) & Digi-Reel® (suitable for automated pick-and-place assembly), Tube (suitable for manual assembly and lower-volume applications), and Tape & Reel (TR) (suitable for high-volume automated manufacturing). The 8-SOIC package case dimensions remain identical across all packaging formats. Select packaging based on manufacturing process requirements and order volume.
Q: Can the TJM4558CDT be used in applications designed for the AS358?
A: No. The TJM4558CDT operates at a fixed 44 V supply span, whereas the AS358 operates from 3 V to 36 V. The TJM4558CDT cannot function in low-voltage single-supply applications designed for the AS358. Additionally, the TJM4558CDT has lower output current per channel (20 mA versus 40 mA for AS358). Substitution in this direction is not feasible.
Q: What is the significance of the "-EP" and "-R7" suffixes in AD712 part numbers?
A: The "-EP" suffix indicates enhanced product qualification, typically for extended temperature range (-55°C to 125°C) and enhanced reliability screening. The "-R7" suffix indicates Tape & Reel packaging format with 7-inch reel diameter. These suffixes do not affect electrical performance or package compatibility; they indicate packaging format and qualification level. Select based on manufacturing process requirements and temperature range specifications.
Q: Are all substitute parts suitable for audio frequency applications?
A: Yes. All substitute parts support audio frequency operation within their specified bandwidth and slew rate parameters. The TJM4558CDT has 5.5 MHz gain bandwidth product and 2.2 V/µs slew rate. The AD712 series provides 20 V/µs slew rate and 3-4 MHz bandwidth. The ADTL082 series provides 20 V/µs slew rate and 5 MHz bandwidth. The AS358 series provides unspecified slew rate and unspecified bandwidth. For audio applications, all parts are suitable; however, the AD712 and ADTL082 series offer superior high-frequency performance.
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