TS972IST Equivalent & Substitute Parts

Part Overview

The TS972IST is a general-purpose operational amplifier manufactured by STMicroelectronics, featuring dual circuits in an 8-MiniSO surface-mount package. This device is classified as a rail-to-rail amplifier with automotive-grade qualification (AEC-Q100) and is currently in active product status. The TS972IST is designed for applications requiring low-power, dual-channel amplification across industrial and automotive environments.

Substitute parts are necessary when the TS972IST becomes unavailable, when alternative packaging formats are required for specific assembly processes, or when design requirements necessitate different electrical performance characteristics while maintaining functional compatibility.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Slew Rate	4	V/µs
Gain Bandwidth Product	12	MHz
Current - Input Bias	200	nA
Voltage - Input Offset	1	mV
Current - Supply (x2 Channels)	2	mA
Current - Output / Channel	100	mA
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	10	V
Operating Temperature	-40 to 125	°C
Grade	Automotive	—
Qualification	AEC-Q100	—
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TS972IST is determined by the following critical parameters:

Functional Equivalence Criteria:

Amplifier Type: General Purpose
Number of Circuits: 2
Output Type: Rail-to-Rail
Voltage - Supply Span (Min): ≥ 2.7 V
Voltage - Supply Span (Max): ≥ 10 V
Operating Temperature Range: Must encompass -40°C to 125°C or be compatible with application requirements

Performance Compatibility Criteria:

Gain Bandwidth Product: 12 MHz or higher
Slew Rate: 4 V/µs or higher
Current - Input Bias: 200 nA or lower
Voltage - Input Offset: 1 mV or lower
Current - Output / Channel: 80 mA or higher

Compliance & Qualification Criteria:

RoHS3 Compliance: Required
Automotive Grade / AEC-Q100: Required for automotive applications
Moisture Sensitivity Level: 1 or 2 acceptable

Package Considerations:

Primary package: 8-MiniSO (0.118", 3.00mm Width)
Alternative packages: 8-SOIC (0.154", 3.90mm Width), 8-VSSOP acceptable with PCB layout modification

Substitute parts are grouped into two categories: direct functional equivalents with identical electrical performance and alternative-performance devices that meet or exceed critical parameters while offering different trade-offs in slew rate, bandwidth, or supply current.

Parameter Comparison

Parameter	TS972IST	TL972QDRQ1	TL972IDR	TL972ID	OPA2725AIDGKT	MAX407ESA+T	MAX417ESA+
Manufacturer	STMicroelectronics	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Analog Devices Inc./Maxim	Analog Devices Inc./Maxim
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	CMOS	General Purpose	General Purpose
Number of Circuits	2	2	2	2	2	2	2
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate (V/µs)	4	5	5	5	30	0.005	0.08
Gain Bandwidth Product (MHz)	12	12	12	12	20	0.008	0.15
Current - Input Bias (nA)	200	200	200	200	0.03	0.0001	0.0001
Voltage - Input Offset (mV)	1	1	1	1	1.5	1	1
Current - Supply (mA, x2 Channels)	2	2	2	2	4.3	0.001	0.001
Current - Output / Channel (mA)	100	80	80	80	40	0.6	0.6
Voltage - Supply Span Min (V)	2.7	2.7	2.7	2.7	3.5	2.5	2.5
Voltage - Supply Span Max (V)	10	12	12	12	12	10	10
Operating Temperature (°C)	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 85	-40 to 85
Grade	Automotive	Automotive	—	—	—	—	—
Qualification	AEC-Q100	AEC-Q100	—	—	—	—	—
Package / Case	8-TSSOP, 8-MSOP	8-SOIC	8-SOIC	8-SOIC	8-TSSOP, 8-MSOP	8-SOIC	8-SOIC
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1	1	1	1	2	1	1
Product Status	Active	Active	Active	Last Time Buy	Active	Active	Active

Engineering Selection Recommendations

Tier 1: Direct Functional Equivalents (Automotive-Qualified)

The TL972QDRQ1 is the primary substitute for the TS972IST in automotive applications. Both devices are AEC-Q100 qualified, feature identical electrical specifications (12 MHz gain bandwidth product, 5 V/µs slew rate, 200 nA input bias current), and operate across the full -40°C to 125°C temperature range. The TL972QDRQ1 is packaged in 8-SOIC format, requiring PCB layout modification from the original 8-MiniSO package. This device is in active product status with 4,312 units in stock.

Tier 2: Functional Equivalents (Non-Automotive)

The TL972IDR and TL972ID are functionally equivalent to the TS972IST with identical electrical performance and temperature range but lack automotive qualification. The TL972IDR is in active status with 35,100 units available. The TL972ID is in Last Time Buy status with 1,647 units available. These devices are suitable for industrial and consumer applications where AEC-Q100 qualification is not required.

Tier 3: Alternative Performance Devices (Same Package Family)

The OPA2725AIDGKT is a CMOS amplifier in the 8-TSSOP/8-MSOP package family, offering superior slew rate (30 V/µs) and gain bandwidth product (20 MHz) compared to the TS972IST. However, it features higher supply current (4.3 mA vs. 2 mA), lower output current per channel (40 mA vs. 100 mA), and requires minimum 3.5 V supply voltage. This device is suitable for high-speed applications where power consumption is not critical. MSL rating is 2 (1 Year) versus MSL 1 for the TS972IST.

Tier 4: Low-Power Alternatives (Different Package)

The MAX407ESA+T and MAX417ESA+ are low-power alternatives from Analog Devices Inc./Maxim Integrated in 8-SOIC packaging. The MAX407ESA+T features extremely low supply current (1 µA) and input bias current (0.1 pA) but operates at only 8 kHz gain bandwidth product with 0.005 V/µs slew rate. The MAX417ESA+ offers improved performance (150 kHz bandwidth, 0.08 V/µs slew rate) while maintaining ultra-low power consumption. Both devices operate to -40°C to 85°C, which is below the TS972IST's 125°C maximum. These devices are suitable for battery-powered and ultra-low-power applications where speed is not critical.

Selection Criteria Summary:

Automotive applications requiring AEC-Q100: Select TL972QDRQ1
Industrial/consumer applications with identical performance: Select TL972IDR (active status preferred over TL972ID)
High-speed applications with same package: Select OPA2725AIDGKT
Ultra-low-power applications: Select MAX407ESA+T or MAX417ESA+
Package compatibility: Verify PCB layout compatibility when transitioning from 8-MiniSO to 8-SOIC or 8-VSSOP formats

Frequently Asked Questions (FAQ)

Q: Can the TL972QDRQ1 be used as a direct replacement for the TS972IST in automotive applications?

A: Yes. The TL972QDRQ1 meets all functional requirements for direct substitution in automotive applications. Both devices are AEC-Q100 qualified, feature identical electrical specifications (12 MHz gain bandwidth product, 5 V/µs slew rate, 200 nA input bias current), and operate across -40°C to 125°C. The primary difference is packaging: TL972QDRQ1 uses 8-SOIC (0.154", 3.90mm width) versus TS972IST's 8-MiniSO (0.118", 3.00mm width). PCB layout modification is required.

Q: What is the difference between TL972IDR and TL972QDRQ1?

A: Both devices share identical electrical specifications and temperature range (-40°C to 125°C). The key difference is qualification: TL972QDRQ1 is AEC-Q100 automotive-qualified, while TL972IDR is not. For automotive applications, TL972QDRQ1 is required. For industrial and consumer applications, TL972IDR is acceptable and offers higher inventory availability (35,100 units).

Q: Why does the OPA2725AIDGKT have different electrical specifications than the TS972IST?

A: The OPA2725AIDGKT is a CMOS amplifier architecture designed for high-speed applications, resulting in higher slew rate (30 V/µs vs. 4 V/µs) and gain bandwidth product (20 MHz vs. 12 MHz). However, this performance comes with trade-offs: higher supply current (4.3 mA vs. 2 mA), lower output current per channel (40 mA vs. 100 mA), and higher input offset voltage (1.5 mV vs. 1 mV). Selection depends on application requirements for speed versus power consumption and output drive capability.

Q: Can MAX407ESA+T or MAX417ESA+ be used in applications requiring 125°C operation?

A: No. Both MAX407ESA+T and MAX417ESA+ operate only to 85°C maximum, which is below the TS972IST's 125°C specification. These devices are not suitable for applications requiring full -40°C to 125°C temperature range. Use these devices only in applications with maximum operating temperature of 85°C or lower.

Q: What is the impact of changing from 8-MiniSO to 8-SOIC packaging?

A: The 8-SOIC package (0.154", 3.90mm width) is wider than 8-MiniSO (0.118", 3.00mm width), requiring PCB layout modification. Pin pitch and lead configuration differ between packages. Verify PCB footprint compatibility and trace routing before substitution. No electrical impact occurs; the change is purely mechanical and layout-related.

Q: Is the OPA2725AIDGKT compatible with the TS972IST's 8-MiniSO package footprint?

A: Yes. The OPA2725AIDGKT uses 8-TSSOP/8-MSOP packaging (0.118", 3.00mm width), which is identical to the TS972IST's 8-MiniSO package. No PCB layout modification is required for footprint compatibility. However, electrical performance differences must be evaluated for the specific application.

Q: What does MSL 1 versus MSL 2 mean for component handling?

A: MSL (Moisture Sensitivity Level) 1 indicates unlimited shelf life without moisture control. MSL 2 indicates a 1-year shelf life under controlled moisture conditions. The TS972IST has MSL 1. The OPA2725AIDGKT has MSL 2, requiring more stringent storage and handling procedures. This affects component procurement, storage, and assembly processes.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (TL972QDRQ1, TL972IDR, TL972ID, OPA2725AIDGKT, MAX407ESA+T, MAX417ESA+) are ROHS3 compliant, matching the TS972IST's compliance status.

Q: Which substitute offers the best inventory availability?

A: The TL972IDR offers the highest inventory availability with 35,100 units in stock. For automotive-qualified alternatives, TL972QDRQ1 has 4,312 units available. For low-power alternatives, MAX417ESA+ has 12,600 units in stock.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message