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TS27M2BID CMOS Amplifier Equivalent & Substitute Parts
Part Overview
The TS27M2BID is a dual-channel CMOS amplifier integrated circuit manufactured by STMicroelectronics in an 8-SOIC surface mount package. This device is classified as obsolete, indicating it is no longer in active production. The TS27M2BID features a gain bandwidth product of 1 MHz, extremely low input bias current of 1 pA, and operates across a wide supply voltage range of 3 V to 16 V. Due to its obsolete status, equivalent and substitute parts are necessary for ongoing design support, production continuity, and system maintenance applications.
Substiute Parts
Key Parameters
| Parameter | TS27M2BID Value | Unit |
|---|---|---|
| Amplifier Type | CMOS | — |
| Number of Circuits | 2 | — |
| Slew Rate | 0.6 | V/µs |
| Gain Bandwidth Product | 1 | MHz |
| Current - Input Bias | 1 | pA |
| Voltage - Input Offset | 250 | µV |
| Current - Supply (x2 Channels) | 150 | µA |
| Current - Output / Channel | 45 | mA |
| Voltage - Supply Span (Min) | 3 | V |
| Voltage - Supply Span (Max) | 16 | V |
| Operating Temperature Range | -40 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 TS27M2BID is determined by the following critical parameters: dual-channel configuration (2 circuits), 8-SOIC package compatibility, surface mount mounting type, and electrical performance specifications including slew rate, gain bandwidth product, input bias current, and supply voltage range.
Substitute parts are grouped into two categories based on amplifier type:
CMOS Amplifier Substitutes: Parts maintaining CMOS amplifier architecture with comparable input bias current characteristics (1 pA) and supply voltage compatibility. These substitutes prioritize low input bias current and are suitable for applications requiring ultra-high input impedance.
General Purpose Amplifier Substitutes: Parts with general purpose amplifier architecture offering higher input bias current (20 nA to 45 nA) but maintaining dual-channel configuration, 8-SOIC packaging, and compatible supply voltage ranges. These substitutes provide active product status and broader availability.
The key parameters determining substitution eligibility are: number of circuits (2), package type (8-SOIC), mounting type (surface mount), supply voltage range overlap, and operating temperature range compatibility.
Parameter Comparison
| Parameter | TS27M2BID | AP4310AMTR-G1 | LM2904AVQDRG4 | LM2904AVQDRG4Q1 | LM2904AVQDRQ1 | SC2904VDR2G | TLC1078CD | TLC1078CDR | TLC1078ID | TLC1078IDR | TLC252ACD | Unit |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Amplifier Type | CMOS | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose | CMOS | CMOS | CMOS | CMOS | CMOS | — |
| Number of Circuits | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | — |
| Slew Rate | 0.6 | 0.5 | 0.3 | 0.3 | 0.3 | — | 0.032 | 0.032 | 0.032 | 0.032 | 2.9 | V/µs |
| Gain Bandwidth Product | 1 | 1 | 0.7 | 0.7 | 0.7 | — | 0.11 | 0.11 | 0.11 | 0.11 | 2.2 | MHz |
| Current - Input Bias | 1 | 20 | 20 | 20 | 20 | 45 | 1 | 1 | 1 | 1 | 1 | pA / nA |
| Voltage - Input Offset | 250 | 500 | 1000 | 1000 | 1000 | 2000 | 180 | 180 | 180 | 180 | 900 | µV |
| Current - Supply (x2 Channels) | 150 | 150 | 500 | 500 | 500 | — | 29 | 29 | 29 | 29 | 1900 | µA |
| Current - Output / Channel | 45 | 40 | 40 | 30 | 30 | 40 | 30 | 30 | 30 | 30 | — | mA |
| Voltage - Supply Span (Min) | 3 | 3 | 3 | 3 | 3 | 3 | 1.4 | 1.4 | 3 | 3 | 1.4 | V |
| Voltage - Supply Span (Max) | 16 | 36 | 30 | 26 | 26 | 26 | 16 | 16 | 16 | 16 | 16 | V |
| Operating Temperature Range | -40 to 125 | -40 to 105 | -40 to 125 | -40 to 125 | -40 to 125 | -40 to 85 | 0 to 70 | 0 to 70 | -40 to 85 | -40 to 85 | 0 to 70 | °C |
| Package / Case | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | — |
| Product Status | Obsolete | Active | Discontinued at DiGi Electronics | Active | Active | Obsolete | Last Time Buy | Active | Active | Active | Last Time Buy | — |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | — |
Engineering Selection Recommendations
Primary CMOS Substitutes (Recommended for Direct Replacement):
The TLC1078 series (TLC1078CD, TLC1078CDR, TLC1078ID, TLC1078IDR) maintains CMOS amplifier architecture with 1 pA input bias current matching the TS27M2BID. These parts are pin-compatible in 8-SOIC packaging and preserve ultra-high input impedance characteristics. TLC1078IDR and TLC1078ID are active products with extended operating temperature range (-40°C to 85°C), providing long-term availability. TLC1078CDR is an active product in tape and reel packaging. The TLC1078 series operates within the 3 V to 16 V supply range compatible with TS27M2BID applications.
Secondary CMOS Substitute (Higher Performance):
The TLC252ACD offers CMOS amplifier architecture with 1 pA input bias current and higher slew rate (2.9 V/µs) and gain bandwidth product (2.2 MHz) compared to the TS27M2BID. This part is suitable for applications requiring improved frequency response while maintaining CMOS input characteristics. TLC252ACD is in last time buy status.
General Purpose Alternatives (When CMOS Characteristics Not Required):
The LM2904AVQDRQ1 and LM2904AVQDRG4Q1 are active automotive-qualified products (AEC-Q100) with dual-channel configuration in 8-SOIC packaging. These parts provide extended supply voltage range (3 V to 26 V) and are suitable for applications where general purpose amplifier performance is acceptable. The LM2904AVQDRG4 is discontinued at DiGi Electronics but remains available through inventory channels.
The AP4310AMTR-G1 from Diodes Incorporated is an active general purpose amplifier with extended supply voltage range (3 V to 36 V) and high inventory availability (888,300 pieces). This part is suitable for applications with higher supply voltage requirements.
Obsolete Status Consideration:
The SC2904VDR2G is obsolete and should not be selected for new designs despite meeting basic package and circuit count requirements.
Frequently Asked Questions (FAQ)
Q: Can the TLC1078 series directly replace the TS27M2BID?
A: Yes. The TLC1078 series maintains CMOS amplifier architecture, dual-channel configuration, 8-SOIC packaging, and 1 pA input bias current. Pin configuration and functional operation are compatible. Operating temperature ranges differ; verify application requirements against specific TLC1078 variant temperature specifications.
Q: What is the primary difference between CMOS and general purpose amplifier substitutes?
A: CMOS amplifiers (TS27M2BID, TLC1078, TLC252ACD) feature 1 pA input bias current, providing ultra-high input impedance suitable for high-impedance signal sources. General purpose amplifiers (LM2904, AP4310) feature 20 nA to 45 nA input bias current, requiring input impedance consideration in circuit design. Both maintain dual-channel 8-SOIC configuration.
Q: Are the LM2904 variants interchangeable with each other?
A: The LM2904AVQDRG4, LM2904AVQDRG4Q1, and LM2904AVQDRQ1 share identical electrical specifications but differ in product status, packaging format, and automotive qualification. LM2904AVQDRG4Q1 and LM2904AVQDRQ1 are automotive-qualified (AEC-Q100) active products. Verify packaging requirements (cut tape vs. tape and reel) for procurement compatibility.
Q: What supply voltage range is compatible with TS27M2BID applications?
A: The TS27M2BID operates from 3 V to 16 V. All recommended CMOS substitutes (TLC1078 series, TLC252ACD) operate within this range. General purpose substitutes (LM2904 variants, AP4310) support extended ranges but are compatible within the 3 V to 16 V window.
Q: Is the 8-SOIC package identical across all substitute parts?
A: Yes. All substitute parts use 8-SOIC (0.154", 3.90mm width) surface mount packaging. Pin configuration and physical dimensions are standardized, enabling direct PCB footprint compatibility.
Q: Which substitute offers the best long-term availability?
A: The LM2904AVQDRQ1 and LM2904AVQDRG4Q1 are active automotive-qualified products from Texas Instruments with high inventory levels (40,200 and 5,400 pieces respectively). The AP4310AMTR-G1 from Diodes Incorporated has the highest inventory availability (888,300 pieces) among all substitutes.
Q: Can I use a general purpose amplifier substitute in a high-impedance signal conditioning application?
A: General purpose amplifiers feature 20 nA to 45 nA input bias current compared to 1 pA for CMOS types. In high-impedance applications, input bias current generates offset voltage across the source impedance. Evaluate circuit requirements; CMOS substitutes (TLC1078 series) are preferred for high-impedance sources.
Q: What is the significance of RoHS3 compliance and MSL rating?
A: All substitute parts are ROHS3 compliant, meeting environmental and hazardous substance restrictions. Moisture Sensitivity Level (MSL) 1 indicates unlimited shelf life without moisture control, matching the TS27M2BID. Parts with MSL 3 (AP4310AMTR-G1) require moisture control during storage and handling.
Q: Are automotive-qualified variants suitable for non-automotive applications?
A: Yes. Automotive-qualified parts (LM2904AVQDRG4Q1, LM2904AVQDRQ1) meet AEC-Q100 standards and are suitable for any application. Automotive qualification indicates enhanced reliability and extended testing; these parts are compatible with general industrial and commercial applications.
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