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TS27M4IPT CMOS Amplifier 4 Circuit Equivalent & Substitute Parts
Part Overview
The TS27M4IPT is a CMOS amplifier integrated circuit manufactured by STMicroelectronics, configured as a 4-circuit operational amplifier in a 14-TSSOP surface mount package. This device is classified as obsolete, indicating it is no longer in active production. The TS27M4IPT operates across a supply voltage range of 3V to 16V with an operating temperature range of -40°C to 125°C, making it suitable for industrial and consumer applications requiring low-power CMOS amplification.
Due to its obsolete status, identifying equivalent and substitute parts is necessary for design continuity, production support, and long-term component availability. Substitute parts must maintain functional compatibility through matching package type, circuit count, and electrical performance within acceptable operating parameters.
Substiute Parts
Key Parameters
| Parameter | TS27M4IPT Value | Unit |
|---|---|---|
| Amplifier Type | CMOS | — |
| Number of Circuits | 4 | — |
| Package / Case | 14-TSSOP (0.173", 4.40mm Width) | — |
| Mounting Type | Surface Mount | — |
| Slew Rate | 0.6 | V/µs |
| Gain Bandwidth Product | 1 | MHz |
| Current - Input Bias | 1 | pA |
| Voltage - Input Offset | 1.1 | mV |
| Current - Supply (x4 Channels) | 150 | µA |
| Current - Output / Channel | 45 | mA |
| Voltage - Supply Span (Min) | 3 | V |
| Voltage - Supply Span (Max) | 16 | V |
| Operating Temperature | -40 to 125 | °C |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the TS27M4IPT is determined by the following critical parameters:
Package Compatibility: All substitute parts must use the 14-TSSOP surface mount package with identical 0.173" (4.40mm) width to ensure PCB layout compatibility without redesign.
Circuit Configuration: All substitutes must provide 4 independent amplifier circuits within a single package to maintain functional equivalence.
Supply Voltage Range: The substitute must operate within the minimum 3V supply requirement. The TS27M4IPT operates to a maximum of 16V; substitutes with higher maximum ratings (up to 26V, 30V, or 32V) remain compatible as they encompass the original operating range.
Operating Temperature Range: The TS27M4IPT operates from -40°C to 125°C. Substitutes with identical or extended temperature ranges are acceptable. The LM2902MT operates to 85°C maximum, which represents a narrower range and may not be suitable for all applications.
Electrical Performance: Input bias current, input offset voltage, slew rate, gain bandwidth product, and output current per channel are secondary selection criteria. Substitutes with comparable or superior electrical characteristics maintain functional compatibility.
Compliance and Status: RoHS3 compliance and MSL Level 1 are maintained across all listed substitutes. Product status (Active, Last Time Buy, Obsolete, Not For New Designs) indicates availability and long-term support considerations.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Slew Rate (V/µs) | GBW (MHz) | Input Bias (nA/pA) | Input Offset (mV) | Supply Current (mA) | Output Current (mA) | Supply Max (V) | Temp Range (°C) | Package |
|---|---|---|---|---|---|---|---|---|---|---|---|
| TS27M4IPT | STMicroelectronics | Obsolete | 0.6 | 1 | 1 pA | 1.1 | 0.15 | 45 | 16 | -40 to 125 | 14-TSSOP |
| LM2902KAVQPWR | Texas Instruments | Active | 0.5 | 1.2 | 20 nA | 3 | 1.4 | 30 | 30 | -40 to 125 | 14-TSSOP |
| LM2902KPW | Texas Instruments | Last Time Buy | 0.5 | 1.2 | 20 nA | 3 | 1.4 | 30 | 26 | -40 to 125 | 14-TSSOP |
| LM2902KPWR | Rohm Semiconductor | Obsolete | 0.3 | 1.2 | 20 nA | 3 | 1.4 | 30 | 26 | -40 to 125 | 14-TSSOP |
| LM2902KVQPWR | Rohm Semiconductor | Not For New Designs | 0.3 | 1.2 | 20 nA | 3 | 1.4 | 30 | 26 | -40 to 125 | 14-TSSOP |
| LM2902MT | Texas Instruments | Last Time Buy | — | 1 | 45 nA | 2 | 1.5 | 40 | 32 | -40 to 85 | 14-TSSOP |
| LM2902MT/NOPB | Texas Instruments | Active | — | 1 | 45 nA | 2 | 1.5 | 40 | 32 | -40 to 85 | 14-TSSOP |
| LM2902MTX/NOPB | Texas Instruments | Active | — | 1 | 45 nA | 2 | 1.5 | 40 | 32 | -40 to 85 | 14-TSSOP |
| LM2902QPWRG4Q1 | Texas Instruments | Last Time Buy | 0.5 | 1.2 | 20 nA | 3 | 1.4 | 60 | 26 | -40 to 125 | 14-TSSOP |
| LM2902QPWRQ1 | Texas Instruments | Active | 0.5 | 1.2 | 20 nA | 3 | 1.4 | 60 | 26 | -40 to 125 | 14-TSSOP |
| TLC274CPW | Texas Instruments | Obsolete | 3.6 | 2.2 | 0.6 pA | 1.1 | 2.7 | 30 | 16 | 0 to 70 | 14-TSSOP |
Engineering Selection Recommendations
Primary Substitutes (Active Status)
The LM2902QPWRQ1 (Texas Instruments, Active) is the recommended primary substitute. It maintains the full -40°C to 125°C operating temperature range of the TS27M4IPT, provides AEC-Q100 automotive qualification, and is currently in active production with 29,100 units in stock. The 14-TSSOP package is identical. While input bias current and offset voltage are higher than the TS27M4IPT, the LM2902QPWRQ1 operates within compatible electrical parameters for general-purpose amplification applications.
The LM2902MT/NOPB (Texas Instruments, Active) and LM2902MTX/NOPB (Texas Instruments, Active) are alternative active substitutes. Both maintain the 14-TSSOP package and 1 MHz gain bandwidth product. However, these parts operate only to 85°C maximum, which restricts their use in applications requiring the full -40°C to 125°C range.
The LM2902KAVQPWR (Texas Instruments, Active) provides the widest supply voltage range (3V to 30V) and maintains full temperature range compatibility (-40°C to 125°C). This part includes AEC-Q100 automotive qualification and is suitable for applications requiring extended supply voltage operation.
Secondary Substitutes (Last Time Buy Status)
The LM2902KPW (Texas Instruments, Last Time Buy) and LM2902QPWRG4Q1 (Texas Instruments, Last Time Buy) are available but designated for last-time purchases. These parts maintain compatibility with the TS27M4IPT but have limited future availability.
Obsolete and Restricted Substitutes
The LM2902KPWR (Rohm Semiconductor, Obsolete) and LM2902KVQPWR (Rohm Semiconductor, Not For New Designs) are not recommended for new designs despite package and temperature range compatibility. The TLC274CPW (Texas Instruments, Obsolete) operates only to 70°C maximum and is unsuitable for the full industrial temperature range.
Frequently Asked Questions (FAQ)
Q: Can the LM2902QPWRQ1 directly replace the TS27M4IPT without PCB modifications?
A: Yes. Both parts use the identical 14-TSSOP surface mount package with 0.173" (4.40mm) width. Pin-to-pin compatibility is maintained, allowing direct substitution without PCB layout changes.
Q: What is the difference between LM2902QPWRQ1 and LM2902QPWRG4Q1?
A: Both parts are LM2902 variants with identical electrical specifications and 14-TSSOP packaging. The primary difference is product status: LM2902QPWRQ1 is Active (recommended for new designs), while LM2902QPWRG4Q1 is Last Time Buy (limited future availability). Both include AEC-Q100 automotive qualification.
Q: Why does the LM2902MT have a narrower operating temperature range (-40°C to 85°C) compared to the TS27M4IPT (-40°C to 125°C)?
A: The LM2902MT is specified with a maximum junction temperature (TJ) of 85°C, whereas the TS27M4IPT is specified to 125°C ambient temperature (TA). Applications requiring operation above 85°C ambient temperature cannot use the LM2902MT.
Q: Is the TLC274CPW a suitable substitute for the TS27M4IPT?
A: The TLC274CPW shares the 14-TSSOP package and similar input offset voltage (1.1 mV). However, it operates only to 70°C maximum, which is below the TS27M4IPT's 125°C upper limit. Additionally, the TLC274CPW is obsolete. It is not recommended for applications requiring the full industrial temperature range.
Q: What does "Last Time Buy" status mean for component selection?
A: Last Time Buy indicates the manufacturer has announced end-of-life for the part. Existing inventory is available for purchase, but no future production is planned. Parts with this status should be used only when active alternatives are unavailable or unsuitable.
Q: Are all listed substitutes RoHS3 compliant?
A: Yes. All substitute parts listed maintain RoHS3 compliance and MSL Level 1 (Unlimited moisture sensitivity), matching the TS27M4IPT's environmental compliance status.
Q: Can I use the LM2902KAVQPWR in applications with 24V supply voltage?
A: Yes. The LM2902KAVQPWR operates across a 3V to 30V supply range, which encompasses 24V operation. The TS27M4IPT operates only to 16V maximum, so the LM2902KAVQPWR provides extended supply voltage capability.
Q: What is the significance of AEC-Q100 qualification on the LM2902QPWRQ1?
A: AEC-Q100 qualification indicates the part meets automotive-grade reliability standards established by the Automotive Electronics Council. This certification is relevant for automotive and high-reliability industrial applications. The TS27M4IPT does not carry this qualification.
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