TS27L2AIN CMOS Amplifier Equivalent & Substitute Parts

Part Overview

The TS27L2AIN is a CMOS amplifier integrated circuit manufactured by STMicroelectronics, configured as a dual-channel operational amplifier in an 8-Mini DIP package. This device is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design support and production requirements. The TS27L2AIN operates across a supply voltage range of 3V to 16V with a gain bandwidth product of 100 kHz and is suitable for low-power, low-speed analog signal processing applications.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	TS27L2AIN	—
Manufacturer	STMicroelectronics	—
Amplifier Type	CMOS	—
Number of Circuits	2	—
Slew Rate	0.04	V/µs
Gain Bandwidth Product	100	kHz
Current - Input Bias	1	pA
Voltage - Input Offset	1.1	mV
Current - Supply (per Channel)	10	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-DIP (0.300", 7.62mm)	—
Mounting Type	Through Hole	—
Product Status	Obsolete	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the TS27L2AIN is determined by the following critical parameters:

Package Compatibility: All substitute parts must use the 8-DIP (0.300", 7.62mm) through-hole package to ensure mechanical and electrical compatibility with existing PCB layouts.

Amplifier Configuration: The device must be a dual-channel CMOS operational amplifier to maintain functional equivalence.

Supply Voltage Range: Substitute parts must support the minimum 3V supply requirement of the TS27L2AIN. Parts with lower minimum supply voltages (1.4V) remain compatible as they encompass the required operating range.

Electrical Performance Envelope: Substitute parts are grouped based on whether they maintain similar performance characteristics (low slew rate, moderate gain bandwidth product) or offer enhanced performance (higher slew rate, higher gain bandwidth product). Both categories are valid substitutes provided they meet the package and supply voltage requirements.

Product Status and Compliance: Active and Last Time Buy products are acceptable substitutes. All candidates maintain ROHS3 compliance and REACH unaffected status, consistent with the original part.

Parameter Comparison

Parameter	TS27L2AIN	TLC1078CP	TLC1078IP	TLC252BCP	TLC25L2BCP	TLC25L2CP	TLC25M2ACP	TLC25M2CP	TLC272ACP	TLC272AIP	TLC272BCP
Manufacturer	STMicroelectronics	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Number of Circuits	2	2	2	2	2	2	2	2	2	2	2
Amplifier Type	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
Slew Rate (V/µs)	0.04	0.032	0.032	2.9	2.9	2.9	2.9	2.9	5.3	5.3	5.3
Gain Bandwidth Product (kHz)	100	110	110	2200	110	110	1700	1700	2200	2200	2200
Current - Input Bias (pA)	1	1	1	0.6	0.7	0.7	0.7	0.7	0.7	0.7	0.7
Voltage - Input Offset (mV)	1.1	0.18	0.18	0.29	0.235	1.1	0.9	1.1	0.9	0.9	0.29
Current - Supply per Channel (µA)	10	29	29	1900	29	29	285	285	1900	1400	1900
Current - Output / Channel (mA)	45	30	30	—	—	—	—	—	30	30	30
Voltage - Supply Span Min (V)	3	1.4	3	1.4	1.4	1.4	1.4	1.4	3	4	3
Voltage - Supply Span Max (V)	16	16	16	16	16	16	16	16	16	16	16
Operating Temperature (°C)	-40 to 125	0 to 70	-40 to 85	0 to 70	0 to 70	0 to 70	0 to 70	0 to 70	0 to 70	-40 to 85	0 to 70
Package / Case	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Product Status	Obsolete	Active	Active	Last Time Buy	Last Time Buy	Last Time Buy	Last Time Buy	Last Time Buy	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

Engineering Selection Recommendations

Direct Performance Equivalents (Minimal Performance Change):

The TLC1078CP and TLC1078IP represent the closest functional equivalents to the TS27L2AIN. Both devices maintain similar slew rate (0.032V/µs versus 0.04V/µs) and gain bandwidth product (110 kHz versus 100 kHz) characteristics. The TLC1078IP is preferred for extended temperature range applications, supporting -40°C to 85°C operation compared to the TLC1078CP's 0°C to 70°C range. Both parts are manufactured by Texas Instruments under the LinCMOS™ series and carry Active product status, ensuring long-term availability.

Enhanced Performance Substitutes (Higher Slew Rate and Bandwidth):

The TLC272 series (TLC272ACP, TLC272AIP, TLC272BCP) and TLC252BCP offer significantly improved performance with slew rates of 5.3V/µs and 2.9V/µs respectively, and gain bandwidth products of 2.2 MHz and 2.2 MHz respectively. These devices are suitable for applications requiring faster signal processing. The TLC272AIP supports the extended temperature range (-40°C to 85°C) matching the TS27L2AIN's thermal envelope. All TLC272 variants maintain 30 mA output current capability.

Low-Power Variants (Reduced Supply Current):

The TLC25L2BCP and TLC25L2CP offer reduced supply current (29µA per channel versus 10µA for the TS27L2AIN) while maintaining the 110 kHz gain bandwidth product. These parts feature single-ended output configuration and are designated Last Time Buy status. The TLC25M2ACP and TLC25M2CP provide open-drain output configuration with higher supply current (285µA per channel) and 1.7 MHz gain bandwidth product.

Compliance and Availability:

All substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with regulatory requirements. Active status parts (TLC1078IP, TLC272ACP, TLC272AIP, TLC272BCP) provide the longest procurement horizon. Last Time Buy parts (TLC252BCP, TLC25L2BCP, TLC25L2CP, TLC25M2ACP, TLC25M2CP) remain available but with finite inventory windows.

Frequently Asked Questions (FAQ)

Q: Can I directly replace the TS27L2AIN with any of these substitute parts without circuit modification?

A: Direct pin-compatible replacement is possible with all listed substitutes due to identical 8-DIP package configuration and dual-channel CMOS amplifier topology. However, circuit performance will change based on the substitute part's electrical characteristics. Applications sensitive to slew rate, gain bandwidth product, or supply current must be evaluated against the specific substitute's parameters.

Q: Which substitute part most closely matches the TS27L2AIN's performance?

A: The TLC1078IP provides the closest performance match with nearly identical slew rate (0.032V/µs versus 0.04V/µs) and gain bandwidth product (110 kHz versus 100 kHz). The TLC1078IP additionally supports the extended temperature range (-40°C to 85°C) of the original part and carries Active product status for long-term availability.

Q: What is the difference between TLC272ACP and TLC272AIP?

A: Both parts are identical except for operating temperature range and supply current specifications. The TLC272ACP operates 0°C to 70°C with 1.9mA supply current per channel, while the TLC272AIP operates -40°C to 85°C with 1.4mA supply current per channel. The TLC272AIP is preferred for extended temperature applications.

Q: Are there output type differences among the substitute parts?

A: Yes. The TLC25L2BCP and TLC25L2CP feature single-ended output configuration. The TLC25M2ACP and TLC25M2CP feature open-drain output configuration. The TLC1078 and TLC272 series do not specify output type designation. Output configuration affects circuit biasing and load impedance requirements.

Q: What is the significance of "Last Time Buy" product status?

A: Last Time Buy designation indicates the manufacturer has announced end-of-life for the product. Inventory remains available but is finite. Parts with this status (TLC252BCP, TLC25L2BCP, TLC25L2CP, TLC25M2ACP, TLC25M2CP) should be procured with awareness of limited future availability. Active status parts (TLC1078IP, TLC272 series) provide indefinite procurement capability.

Q: Can I use a substitute part with lower minimum supply voltage than the TS27L2AIN?

A: Yes. The TS27L2AIN requires minimum 3V supply. Substitute parts with lower minimum supply voltages (1.4V) are fully compatible as they encompass the required operating range. The maximum supply voltage of 16V is consistent across all parts.

Q: How does supply current affect my circuit design?

A: Supply current directly impacts power consumption and thermal management. The TS27L2AIN draws 10µA per channel. The TLC1078 series draws 29µA per channel, while the TLC272 series draws 1.4mA to 1.9mA per channel. Higher supply current variants require larger power supply capacity and may generate additional heat in battery-powered or thermally constrained applications.

Q: What is the practical impact of slew rate differences?

A: Slew rate determines the maximum rate of voltage change at the output. The TS27L2AIN's 0.04V/µs slew rate limits signal bandwidth to approximately 6.4 kHz for 10V peak-to-peak signals. The TLC272 series with 5.3V/µs slew rate supports signal bandwidth up to 848 kHz for equivalent signal amplitude. Applications requiring higher frequency response must use higher slew rate substitutes.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, consistent with the TS27L2AIN. All parts are also REACH unaffected, meeting current environmental and regulatory requirements.

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