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TS27M4ID Equivalent & Substitute Parts
Part Overview
The TS27M4ID is a CMOS amplifier integrated circuit manufactured by STMicroelectronics, featuring four independent circuits in a 14-SOIC surface mount package. This device is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and production requirements. The TS27M4ID operates across a supply voltage range of 3V to 16V with a gain bandwidth product of 1 MHz and exhibits extremely low input bias current of 1 pA, characteristic of CMOS amplifier technology.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer Part Number | TS27M4ID | — |
| Manufacturer | STMicroelectronics | — |
| Category | Linear, Amplifiers | — |
| Amplifier Type | CMOS | — |
| Number of Circuits | 4 | — |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) | — |
| 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 |
| Mounting Type | Surface Mount | — |
| Product Status | Obsolete | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the TS27M4ID requires matching of the following critical parameters:
Package Compatibility: All substitute parts must use the 14-SOIC surface mount package to ensure mechanical and electrical compatibility with existing PCB layouts.
Circuit Count: Four independent amplifier circuits are required to maintain functional equivalence.
Supply Voltage Range: The substitute must operate within the specified supply voltage window. The TS27M4ID operates from 3V to 16V; substitutes with extended ranges (up to 26V, 30V, or 32V) remain compatible as they encompass the original specification.
Amplifier Technology: CMOS amplifiers exhibit superior input bias current characteristics compared to general-purpose amplifiers. However, general-purpose amplifiers with 14-SOIC packaging and four circuits may serve as functional alternatives when input bias current requirements are not critical to circuit performance.
Operating Temperature Range: The TS27M4ID supports -40°C to 125°C operation. Substitutes with identical or extended temperature ranges maintain compatibility.
Electrical Performance Metrics: Gain bandwidth product, slew rate, input offset voltage, and output current drive capability determine functional suitability. Substitutes with comparable or superior specifications maintain performance equivalence.
Substitute parts are grouped into two categories: CMOS amplifiers (closest functional match) and general-purpose amplifiers (alternative technology with similar package and circuit count).
Parameter Comparison
| Parameter | TS27M4ID | LMC6034IM/NOPB | LM2902KAVQDR | LM2902KD | LM2902QDRG4Q1 | LM2902M/NOPB |
|---|---|---|---|---|---|---|
| Manufacturer | STMicroelectronics | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Amplifier Type | CMOS | CMOS | General Purpose | General Purpose | General Purpose | General Purpose |
| Number of Circuits | 4 | 4 | 4 | 4 | 4 | 4 |
| Package / Case | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC |
| Slew Rate (V/µs) | 0.6 | 1.1 | 0.5 | 0.5 | 0.5 | — |
| Gain Bandwidth Product (MHz) | 1 | 1.4 | 1.2 | 1.2 | 1.2 | 1 |
| Current - Input Bias (pA/nA) | 1 pA | 0.04 pA | 20 nA | 20 nA | 20 nA | 45 nA |
| Voltage - Input Offset (mV) | 1.1 | 1 | 3 | 3 | 3 | 2 |
| Current - Supply (µA/mA) | 150 µA | 1.5 mA | 1.4 mA | 1.4 mA | 1.4 mA | 1.5 mA |
| Current - Output / Channel (mA) | 45 | 40 | 30 | 30 | 60 | 40 |
| Voltage - Supply Span (Min) | 3 V | 4.75 V | 3 V | 3 V | 3 V | 3 V |
| Voltage - Supply Span (Max) | 16 V | 15.5 V | 30 V | 26 V | 26 V | 32 V |
| Operating Temperature | -40 to 125°C | -40 to 85°C | -40 to 125°C | -40 to 125°C | -40 to 125°C | -40 to 85°C |
| Product Status | Obsolete | Obsolete | Last Time Buy | Last Time Buy | Last Time Buy | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
CMOS Amplifier Substitutes:
The LMC6034IM/NOPB represents the closest functional alternative to the TS27M4ID from a technology standpoint, offering CMOS amplifier architecture with four circuits in 14-SOIC packaging. This device exhibits superior input bias current performance (0.04 pA) and higher slew rate (1.1 V/µs). However, the LMC6034IM/NOPB is also classified as obsolete and has a reduced maximum supply voltage of 15.5V compared to the TS27M4ID's 16V specification. The operating temperature range is limited to -40°C to 85°C, which is narrower than the TS27M4ID's -40°C to 125°C range.
General-Purpose Amplifier Substitutes:
For applications where CMOS technology is not mandatory, general-purpose amplifiers provide active product status and extended availability. The LM2902QDRQ1 is an active product offering automotive-grade qualification (AEC-Q100) with four circuits in 14-SOIC packaging. This device supports the full -40°C to 125°C operating temperature range and provides 60 mA output current per channel, exceeding the TS27M4ID's 45 mA specification. The LM2902QDRQ1 operates across 3V to 26V supply range, encompassing the TS27M4ID's 3V to 16V requirement.
The LM2902M/NOPB is an active product in the LinCMOS™ series with four circuits in 14-SOIC packaging. This device maintains the 1 MHz gain bandwidth product of the TS27M4ID and provides 40 mA output current per channel. The operating temperature range is -40°C to 85°C, and the supply voltage range extends to 32V.
Product Status Considerations:
The TS27M4ID, LMC6034IM/NOPB, LM2902KD, and LM2902QDRG4Q1 are classified as obsolete or last-time-buy products. For new designs or long-term production support, the LM2902QDRQ1 or LM2902M/NOPB are recommended due to active product status and ongoing manufacturer support.
Compliance and Certification:
All substitute parts listed maintain ROHS3 compliance and MSL 1 (unlimited) moisture sensitivity rating, matching the TS27M4ID's environmental specifications. The LM2902QDRG4Q1 and LM2902QDRQ1 carry AEC-Q100 automotive qualification, providing additional reliability assurance for automotive applications.
Frequently Asked Questions (FAQ)
Q: Can the LM2902 series directly replace the TS27M4ID in existing designs?
A: The LM2902 series shares the 14-SOIC package and four-circuit configuration with the TS27M4ID. However, the LM2902 series uses general-purpose amplifier technology rather than CMOS architecture. Direct substitution is feasible if the application does not require the extremely low input bias current (1 pA) characteristic of CMOS amplifiers. The LM2902 series exhibits input bias current in the nanoampere range (20-45 nA), which may affect high-impedance input circuits.
Q: What is the primary difference between CMOS and general-purpose amplifier substitutes?
A: CMOS amplifiers (TS27M4ID, LMC6034IM/NOPB) feature extremely low input bias current in the picoampere range, making them suitable for high-impedance input applications. General-purpose amplifiers (LM2902 series) have higher input bias current (nanoampere range) but offer superior output current drive capability and extended supply voltage ranges. Technology selection depends on circuit requirements for input impedance and output current.
Q: Are there package compatibility concerns when substituting the TS27M4ID?
A: All listed substitute parts use the 14-SOIC (0.154", 3.90mm width) surface mount package, ensuring mechanical and electrical compatibility with existing PCB layouts. No package-related modifications are required for substitution.
Q: Which substitute part is recommended for new production designs?
A: The LM2902QDRQ1 is recommended for new production designs due to active product status, automotive-grade qualification (AEC-Q100), full -40°C to 125°C operating temperature range, and 60 mA output current per channel. This device provides superior performance margins compared to the TS27M4ID while maintaining long-term availability.
Q: Does the LMC6034IM/NOPB provide a suitable CMOS alternative?
A: The LMC6034IM/NOPB offers CMOS amplifier technology with superior input bias current (0.04 pA) and higher slew rate (1.1 V/µs). However, this device is classified as obsolete, has a reduced maximum supply voltage (15.5V versus 16V), and a narrower operating temperature range (-40°C to 85°C versus -40°C to 125°C). For applications requiring CMOS technology with active product status, alternative CMOS amplifier families should be evaluated.
Q: What supply voltage considerations apply when selecting a substitute?
A: The TS27M4ID operates from 3V to 16V. All listed general-purpose substitutes (LM2902 series) support minimum supply voltage of 3V and maximum supply voltages ranging from 26V to 32V, fully encompassing the original specification. The LMC6034IM/NOPB has a minimum supply voltage of 4.75V, which exceeds the TS27M4ID's 3V minimum and may not be suitable for 3V-only applications.
Q: Are there temperature range limitations with substitute parts?
A: The TS27M4ID supports -40°C to 125°C operation. The LM2902QDRQ1 and LM2902QDRG4Q1 maintain this full temperature range. The LM2902M/NOPB and LMC6034IM/NOPB are limited to -40°C to 85°C operation, which may not be suitable for applications requiring 125°C maximum temperature support.
Q: What is the significance of AEC-Q100 qualification on the LM2902QDRQ1?
A: AEC-Q100 qualification indicates that the LM2902QDRQ1 meets automotive industry reliability and quality standards. This certification is relevant for automotive applications and provides assurance of enhanced testing and quality control procedures. Non-automotive applications do not require this qualification.
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