TS272ACD Equivalent & Substitute Parts

Part Overview

The TS272ACD 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, indicating discontinued production and limited availability in the supply chain. The TS272ACD operates across a supply voltage range of 3V to 16V with a slew rate of 5.5V/µs and gain bandwidth product of 3.5 MHz, making it suitable for general-purpose analog signal conditioning applications. Due to its obsolete status, identification of functionally equivalent substitute components is necessary to support ongoing design requirements and system maintenance.

Key Parameters

Parameter	Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	2	—
Slew Rate	5.5	V/µs
Gain Bandwidth Product	3.5	MHz
Current - Input Bias	1	pA
Voltage - Input Offset	900	µV
Current - Supply (per Channel)	1	mA
Current - Output / Channel	45	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	16	V
Operating Temperature Range	0 to 70	°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 TS272ACD requires matching of critical electrical and mechanical parameters that define functional equivalence. The primary substitution criteria are:

Mandatory Matching Parameters:

Amplifier Type: CMOS technology
Number of Circuits: Dual-channel configuration (2 circuits)
Package / Case: 8-SOIC form factor with 0.154" (3.90mm) width
Mounting Type: Surface Mount
Supply Voltage Range: Minimum 3V to maximum 16V compatibility
Operating Temperature: 0°C to 70°C range support

Performance Parameters for Substitution Consideration:

Slew Rate: 5.5V/µs (determines signal fidelity in dynamic applications)
Gain Bandwidth Product: 3.5 MHz (defines frequency response capability)
Current - Input Bias: 1 pA (ultra-low input current characteristic)
Voltage - Input Offset: 900 µV (DC accuracy specification)
Current - Output / Channel: 45 mA (load driving capability)

Substitute parts are grouped based on their ability to satisfy these parameters within the constraints of available component specifications. Parts with lower performance in slew rate or gain bandwidth product represent functional alternatives for applications with reduced bandwidth requirements. Parts with extended temperature ranges or different supply voltage minimums represent design trade-offs requiring circuit-level evaluation.

Parameter Comparison

Parameter	TS272ACD	LM432MA/NOPB	TLC1078CD	TLC1078CDR	TLC1078ID	TLC1078IDR	TLC252ACD	TLC252CD	TLC252CDR	TLC25L2ACD	TLC25L2CD
Amplifier Type	CMOS	General Purpose	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
Number of Circuits	2	2	2	2	2	2	2	2	2	2	2
Slew Rate (V/µs)	5.5	—	0.032	0.032	0.032	0.032	2.9	2.9	2.9	2.9	2.9
Gain Bandwidth Product (MHz)	3.5	1	0.11	0.11	0.11	0.11	2.2	2.2	2.2	0.11	0.11
Current - Input Bias (pA)	1	3000	1	1	1	1	1	0.6	0.6	50	0.7
Voltage - Input Offset (µV)	900	600	180	180	180	180	900	1100	1100	900	1100
Current - Supply per Channel (mA)	1	0.15	0.029	0.029	0.029	0.029	1.9	1.9	1.9	0.029	0.029
Current - Output / Channel (mA)	45	30	30	30	30	30	—	—	—	—	—
Voltage - Supply Span Min (V)	3	2.5	1.4	1.4	3	3	1.4	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 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	0 to 70
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
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	Obsolete	Last Time Buy	Active	Active	Active	Last Time Buy	Last Time Buy	Active	Last Time Buy	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 Substitutes (Highest Compatibility):

The TLC252CDR and TLC252CD represent the closest functional equivalents to the TS272ACD. Both devices maintain CMOS amplifier architecture with dual-channel configuration in 8-SOIC packaging. The TLC252CDR is currently in active production status, providing long-term supply chain stability compared to the obsolete TS272ACD. The slew rate of 2.9V/µs and gain bandwidth product of 2.2 MHz are lower than the TS272ACD but remain suitable for general-purpose signal conditioning applications. The TLC252CDR is packaged in Tape & Reel format, supporting automated assembly processes. Both TLC252 variants maintain ROHS3 compliance and MSL Level 1 rating, matching the environmental and regulatory requirements of the original component.

Secondary Substitutes (Performance Trade-offs):

The TLC1078CDR and TLC1078IDR offer ultra-low power consumption (29µA per channel) with extended supply voltage range (1.4V minimum). These devices sacrifice bandwidth performance (110 kHz gain bandwidth product, 0.032V/µs slew rate) but provide superior input offset voltage (180 µV) and reduced input bias current (1 pA). The TLC1078IDR extends the operating temperature range to -40°C to 85°C, accommodating industrial temperature specifications beyond the TS272ACD's 0°C to 70°C range. Both TLC1078 variants are currently in active production, ensuring availability. Selection of TLC1078 devices is appropriate for low-frequency applications where power consumption is a critical design constraint.

Alternative Consideration:

The LM432MA/NOPB from Texas Instruments represents a general-purpose amplifier alternative with different technology architecture (non-CMOS). While maintaining dual-channel 8-SOIC packaging and 16V maximum supply voltage, this device exhibits significantly higher input bias current (3 nanoamperes) and lower gain bandwidth product (1 MHz). The LM432MA/NOPB is obsolete, limiting its utility as a long-term replacement solution.

Compliance and Certification:

All identified substitute parts maintain ROHS3 compliance and MSL Level 1 (unlimited moisture sensitivity) ratings, ensuring compatibility with existing manufacturing and environmental standards. All parts carry EAR99 export classification and are REACH unaffected, matching the regulatory profile of the TS272ACD.

Frequently Asked Questions (FAQ)

Q: Can the TLC252CDR directly replace the TS272ACD in existing circuit designs?

A: The TLC252CDR is mechanically and electrically compatible with the TS272ACD in terms of pinout, package form factor, and supply voltage range. However, the reduced slew rate (2.9V/µs versus 5.5V/µs) and lower gain bandwidth product (2.2 MHz versus 3.5 MHz) may affect performance in high-frequency or high-speed signal conditioning applications. Circuit-level evaluation is required to confirm suitability for specific application requirements.

Q: What is the primary advantage of selecting TLC1078CDR or TLC1078IDR over TLC252CDR?

A: The TLC1078 series provides significantly lower supply current consumption (29µA per channel versus 1.9mA for TLC252), making these devices suitable for battery-powered or power-constrained applications. The trade-off is substantially reduced bandwidth (110 kHz versus 2.2 MHz). Selection depends on whether the application prioritizes power efficiency or signal bandwidth.

Q: Are all substitute parts available in the same packaging options as the TS272ACD?

A: All identified substitute parts are available in 8-SOIC surface mount packaging with 0.154" (3.90mm) width, matching the TS272ACD mechanical footprint. Packaging format variations exist (Tube, Tape & Reel) among substitute options. The TLC252CDR and TLC1078IDR are available in Tape & Reel format, supporting high-volume automated assembly. Tube packaging is available for lower-volume applications.

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

A: "Active" status indicates ongoing production and long-term supply chain availability. "Last Time Buy" status indicates the manufacturer has announced end-of-life, with production continuing for a limited period before discontinuation. The TLC1078CDR, TLC1078IDR, and TLC252CDR carry "Active" status, providing supply security. The TLC252CD and TLC1078CD carry "Last Time Buy" status, requiring expedited procurement if selected.

Q: How do input offset voltage specifications affect substitution decisions?

A: The TS272ACD specifies 900 µV input offset voltage. The TLC1078 series provides superior offset voltage performance (180 µV), reducing DC error in precision analog circuits. The TLC252 series matches the TS272ACD offset voltage specification (900-1100 µV range). For applications requiring low DC offset, TLC1078 devices are preferred. For applications with existing offset compensation, TLC252 devices provide equivalent performance.

Q: Can the LM432MA/NOPB be used as a substitute despite its obsolete status?

A: The LM432MA/NOPB is mechanically compatible but exhibits significantly different electrical characteristics (3 nanoampere input bias current versus 1 picoampere, 1 MHz bandwidth versus 3.5 MHz). Its obsolete status creates supply chain risk. This device is not recommended as a primary substitute due to both performance differences and availability constraints.

Q: What temperature range considerations apply when selecting substitutes?

A: The TS272ACD operates from 0°C to 70°C. Most substitute parts (TLC252, TLC1078CD/CDR, TLC25L2) maintain this temperature range. The TLC1078ID and TLC1078IDR extend the range to -40°C to 85°C, supporting industrial and automotive applications. Selection of extended-temperature variants requires confirmation that the application environment justifies the additional cost and complexity.

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