TS27L2ACD Equivalent & Substitute Parts

Part Overview

The TS27L2ACD is a CMOS amplifier integrated circuit manufactured by STMicroelectronics, configured as a dual-channel operational amplifier in an 8-SOIC surface mount package. This device is classified as obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and procurement continuity. The TS27L2ACD operates across a supply voltage range of 3V to 16V with low input bias current and moderate slew rate characteristics suitable for general-purpose analog signal conditioning applications.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	TS27L2ACD	—
Manufacturer	STMicroelectronics	—
Amplifier Type	CMOS	—
Number of Circuits	2	—
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Slew Rate	0.04	V/µs
Gain Bandwidth Product	100	kHz
Current - Input Bias	1	pA
Voltage - Input Offset	900	µV
Current - Supply (x2 Channels)	10	µA
Current - Output / Channel	45	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	16	V
Operating Temperature	0 to 70	°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 TS27L2ACD is determined by compatibility across the following critical parameters: package type (8-SOIC surface mount), number of circuits (dual-channel configuration), amplifier topology (CMOS architecture), supply voltage range (minimum 3V to maximum 16V), and operating temperature span (0°C to 70°C). Additional selection criteria include slew rate, gain bandwidth product, input bias current, input offset voltage, and output current capability.

Substitute parts are grouped into two categories:

Direct Functional Equivalents (CMOS Topology): Parts maintaining CMOS amplifier architecture with comparable electrical performance within the TS27L2ACD operating envelope. These include TLC1078CD, TLC1078CDR, TLC1078ID, and TLC1078IDR from Texas Instruments, which share identical CMOS topology, dual-circuit configuration, and 8-SOIC packaging.

Functional Alternatives (General Purpose Topology): Parts offering broader operating temperature ranges or enhanced electrical performance characteristics while maintaining dual-channel configuration and 8-SOIC packaging. These include TLV27L2ID (Texas Instruments, general purpose amplifier with rail-to-rail output), LM432MA/NOPB (Texas Instruments, general purpose amplifier), and higher-performance CMOS variants such as TLC252ACD, TLC252CD, TLC252CDR, and TLC25L2ACD (Texas Instruments, LinCMOS series with enhanced slew rate and bandwidth).

Parameter Comparison

Parameter	TS27L2ACD	TLV27L2ID	LM432MA/NOPB	TLC1078CD	TLC1078CDR	TLC1078ID	TLC1078IDR	TLC252ACD	TLC252CD	TLC252CDR	TLC25L2ACD
Manufacturer	STMicroelectronics	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Amplifier Type	CMOS	General Purpose	General Purpose	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
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
Slew Rate (V/µs)	0.04	0.06	—	0.032	0.032	0.032	0.032	2.9	2.9	2.9	2.9
Gain Bandwidth Product (kHz)	100	160	1000	110	110	110	110	2200	2200	2200	110
Current - Input Bias (pA)	1	1	3000	1	1	1	1	1	0.6	0.6	50
Voltage - Input Offset (µV)	900	500	600	180	180	180	180	900	1100	1100	900
Current - Supply (µA, x2 Channels)	10	7	150	29	29	29	29	1900	1900	1900	29
Current - Output / Channel (mA)	45	0.4	30	30	30	30	30	—	—	—	—
Voltage - Supply Span Min (V)	3	2.7	2.5	1.4	1.4	3	3	1.4	1.4	1.4	1.4
Voltage - Supply Span Max (V)	16	16	16	16	16	16	16	16	16	16	16
Operating Temperature (°C)	0 to 70	-40 to 125	-40 to 85	0 to 70	0 to 70	-40 to 85	-40 to 85	0 to 70	0 to 70	0 to 70	0 to 70
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Obsolete	Last Time Buy	Active	Active	Active	Last Time Buy	Last Time Buy	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
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

The TLC1078CDR and TLC1078IDR represent the closest functional equivalents to the TS27L2ACD. Both devices maintain CMOS amplifier topology, dual-circuit configuration, and 8-SOIC packaging. The TLC1078CDR is actively produced and available in tape-and-reel packaging, while the TLC1078IDR offers extended operating temperature range (-40°C to 85°C) with active product status. Both parts comply with ROHS3 and maintain MSL 1 rating. The TLC1078CD and TLC1078ID variants provide identical electrical specifications with alternative packaging configurations (tube and standard respectively).

Secondary Substitutes (Extended Temperature Range):

The TLV27L2ID from Texas Instruments provides active product status with extended operating temperature range (-40°C to 125°C) and rail-to-rail output capability. This device maintains dual-channel configuration and 8-SOIC packaging with ROHS3 compliance. The TLV27L2ID exhibits lower supply current (7µA versus 10µA) and reduced input offset voltage (500µV versus 900µV), making it suitable for applications requiring enhanced temperature performance and lower power consumption.

Higher-Performance Alternatives (Enhanced Bandwidth):

The TLC252CDR, TLC252CD, and TLC252ACD from the LinCMOS series offer significantly enhanced slew rate (2.9V/µs versus 0.04V/µs) and gain bandwidth product (2.2MHz versus 100kHz). These devices maintain CMOS topology, dual-circuit configuration, and 8-SOIC packaging with ROHS3 compliance. The TLC252CDR is actively produced in tape-and-reel format. These parts are suitable for applications requiring higher frequency response, though they exhibit increased supply current (1.9mA versus 10µA).

Legacy Alternative:

The LM432MA/NOPB provides general-purpose amplifier topology with 1MHz gain bandwidth product and 30mA output current per channel. This device is classified as obsolete and should be considered only when legacy design compatibility is required.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and 8-SOIC surface mount packaging compatible with TS27L2ACD PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can the TLC1078CDR directly replace the TS27L2ACD in existing designs?

A: Yes. The TLC1078CDR maintains identical package geometry (8-SOIC), dual-channel CMOS amplifier configuration, and compatible electrical specifications. Both devices operate across 3V to 16V supply range with 1pA input bias current and similar slew rate characteristics. The TLC1078CDR is actively produced, addressing the obsolete status of the TS27L2ACD.

Q: What is the primary difference between TLC1078 variants (CD, CDR, ID, IDR)?

A: The suffix designates packaging and temperature rating. CD and CDR variants operate 0°C to 70°C (matching TS27L2ACD temperature range), with CD in tube packaging and CDR in tape-and-reel. ID and IDR variants extend operating temperature to -40°C to 85°C, with ID in standard packaging and IDR in tape-and-reel. All maintain identical electrical specifications.

Q: Why does the TLC252CDR have higher supply current than the TS27L2ACD?

A: The TLC252CDR is a higher-performance variant within the LinCMOS series, featuring 2.9V/µs slew rate and 2.2MHz gain bandwidth product compared to 0.04V/µs and 100kHz for the TS27L2ACD. Enhanced performance characteristics require increased quiescent current (1.9mA versus 10µA). Selection depends on application bandwidth requirements.

Q: Is the TLV27L2ID suitable for applications requiring the TS27L2ACD operating temperature range?

A: The TLV27L2ID extends operating temperature to -40°C to 125°C, exceeding the TS27L2ACD range of 0°C to 70°C. This device is suitable for applications within the TS27L2ACD temperature envelope and provides additional margin for extended temperature operation. The TLV27L2ID is actively produced with ROHS3 compliance.

Q: Can I use the LM432MA/NOPB as a substitute?

A: The LM432MA/NOPB is classified as obsolete and shares general-purpose amplifier topology rather than CMOS architecture. While it maintains 8-SOIC packaging and dual-channel configuration, it exhibits significantly higher input bias current (3nA versus 1pA) and supply current (150µA versus 10µA). This device should be considered only when legacy design compatibility is mandatory.

Q: What packaging options are available for TLC1078 substitutes?

A: TLC1078 devices are available in tube (CD, ID) and tape-and-reel (CDR, IDR) packaging formats. All variants maintain identical 8-SOIC (0.154", 3.90mm width) package geometry compatible with TS27L2ACD PCB layouts. Tape-and-reel variants (CDR, IDR) are preferred for high-volume production.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (TLC1078 series, TLC252 series, TLC25L2ACD, TLV27L2ID, and LM432MA/NOPB) maintain ROHS3 compliance and MSL 1 (unlimited) moisture sensitivity rating, matching the TS27L2ACD environmental specifications.

Q: Which substitute offers the best long-term availability?

A: The TLC1078CDR and TLC1078IDR are actively produced by Texas Instruments with established supply chains. The TLV27L2ID also maintains active product status. These three devices are recommended for new designs requiring sustained component availability.

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