TL971IDRG4 Equivalent & Substitute Parts

Part Overview

The TL971IDRG4 is a general-purpose operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface-mount package. This device features rail-to-rail output capability and is designed for low-power analog signal processing applications. The TL971IDRG4 is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility across key electrical parameters including supply voltage range, output type, and thermal operating specifications.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Output Type	Rail-to-Rail	—
Slew Rate	5	V/µs
Gain Bandwidth Product	12	MHz
Current - Input Bias	200	nA
Voltage - Input Offset	1	mV
Current - Supply	2	mA
Current - Output / Channel	80	mA
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	12	V
Operating Temperature	-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

Substitute parts for the TL971IDRG4 are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Critical Matching Parameters:

Package type: 8-SOIC surface-mount form factor
Output configuration: Rail-to-rail output
Supply voltage range: Minimum 2.7 V, maximum 12 V
Operating temperature range: -40°C to 125°C
Single-circuit configuration

Functional Compatibility Parameters:

Slew rate: 5 V/µs or greater
Gain bandwidth product: 12 MHz or greater
Input bias current: 200 nA or lower
Input offset voltage: 1 mV or lower
Output current capability: 80 mA or greater per channel

Substitute parts are grouped into two categories: direct Texas Instruments equivalents (TL971 series variants) and cross-manufacturer alternatives (Analog Devices ADA4841 series and STMicroelectronics TS series). All substitutes maintain the 8-SOIC package and rail-to-rail output specification. Differences in product status, packaging format, and certain performance metrics are noted in the parameter comparison table.

Parameter Comparison

Parameter	TL971IDRG4	TL971IDR	ADA4841-1YRZ	ADA4841-1YRZ-R7	ADA4841-1YRZ-RL	TS461CDT	TS971IDT
Manufacturer	Texas Instruments	Texas Instruments	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	STMicroelectronics	STMicroelectronics
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
Amplifier Type	General Purpose	General Purpose	Voltage Feedback	Voltage Feedback	Voltage Feedback	General Purpose	General Purpose
Number of Circuits	1	1	1	1	1	1	1
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)	5	5	13	13	13	4	4
Gain Bandwidth Product (MHz)	12	12	80	80	80	12	12
Current - Input Bias (nA)	200	200	3000	3000	3000	200	200
Voltage - Input Offset (mV)	1	1	0.04	0.04	0.04	1	1
Current - Supply (mA)	2	2	1.5	1.5	1.5	2	2
Current - Output / Channel (mA)	80	80	60	60	60	—	100
Voltage - Supply Span (Min) (V)	2.7	2.7	2.7	2.7	2.7	2.7	2.7
Voltage - Supply Span (Max) (V)	12	12	12	12	12	10	10
Operating Temperature (°C)	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-20 to 70	-40 to 125
Package / Case	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)	8-SOIC (0.154", 3.90mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Recommendation: TL971IDR

The TL971IDR is the direct active equivalent to the TL971IDRG4. This part maintains identical electrical specifications including slew rate (5 V/µs), gain bandwidth product (12 MHz), input bias current (200 nA), and output current capability (80 mA). The TL971IDR is manufactured by Texas Instruments and carries active product status with ROHS3 compliance and unlimited moisture sensitivity rating. This part is available in Cut Tape and Digi-Reel packaging formats with 9,894 units in stock.

Secondary Recommendations: ADA4841 Series (Analog Devices)

The ADA4841-1YRZ, ADA4841-1YRZ-R7, and ADA4841-1YRZ-RL represent cross-manufacturer alternatives with enhanced performance characteristics. These voltage feedback amplifiers provide superior slew rate (13 V/µs) and gain bandwidth product (80 MHz) compared to the TL971IDRG4. However, input bias current is elevated to 3 µA and output current per channel is reduced to 60 mA. These parts are suitable for applications requiring higher bandwidth performance. All three variants maintain the 8-SOIC package, rail-to-rail output, and -40°C to 125°C operating temperature range. Packaging options include Tube (ADA4841-1YRZ), Cut Tape with Digi-Reel (ADA4841-1YRZ-R7), and Tape & Reel (ADA4841-1YRZ-RL).

Tertiary Recommendations: STMicroelectronics TS Series

The TS971IDT provides general-purpose amplification with specifications closely aligned to the TL971IDRG4, including 12 MHz gain bandwidth product and 200 nA input bias current. The TS971IDT offers enhanced output current capability (100 mA) and maintains the full -40°C to 125°C operating temperature range. However, maximum supply voltage is limited to 10 V compared to 12 V for the TL971IDRG4. The TS461CDT is an alternative general-purpose option with identical gain bandwidth product and input bias current specifications but operates within a narrower temperature range (-20°C to 70°C) and lower maximum supply voltage (10 V).

Compliance and Certification Status

All substitute parts maintain ROHS3 compliance, unlimited moisture sensitivity rating (MSL 1), and REACH unaffected status, ensuring regulatory compatibility with the original TL971IDRG4 specification.

Frequently Asked Questions (FAQ)

Q: Can the TL971IDR be used as a direct replacement for the TL971IDRG4?

A: Yes. The TL971IDR is the active equivalent with identical electrical specifications. Both parts feature 5 V/µs slew rate, 12 MHz gain bandwidth product, 200 nA input bias current, and 80 mA output current per channel. The primary difference is product status: TL971IDRG4 is obsolete while TL971IDR is active. Packaging format differs (TL971IDR is available in Cut Tape and Digi-Reel formats).

Q: What are the key differences between the TL971IDRG4 and the ADA4841-1YRZ?

A: The ADA4841-1YRZ provides enhanced performance with 13 V/µs slew rate and 80 MHz gain bandwidth product compared to 5 V/µs and 12 MHz for the TL971IDRG4. However, the ADA4841-1YRZ has higher input bias current (3 µA versus 200 nA) and lower output current capability (60 mA versus 80 mA). Both maintain rail-to-rail output, 8-SOIC package, and -40°C to 125°C operating temperature. The ADA4841-1YRZ is classified as a voltage feedback amplifier versus general-purpose for the TL971IDRG4.

Q: Are there supply voltage limitations with substitute parts?

A: The TL971IDR maintains the full 2.7 V to 12 V supply range of the TL971IDRG4. The STMicroelectronics TS971IDT and TS461CDT are limited to 10 V maximum supply voltage. The ADA4841 series (all variants) support the full 2.7 V to 12 V range. Verify supply voltage requirements in your application before selecting a substitute.

Q: What is the operating temperature range for each substitute?

A: The TL971IDR, all ADA4841 variants, and TS971IDT support -40°C to 125°C operation, matching the TL971IDRG4. The TS461CDT operates within a narrower range of -20°C to 70°C. Applications requiring full industrial temperature range should avoid the TS461CDT.

Q: How do packaging formats differ among substitutes?

A: All substitutes use the 8-SOIC surface-mount package with identical 0.154" (3.90mm) width. Packaging format variations relate to supply method: TL971IDR is available in Cut Tape and Digi-Reel; ADA4841-1YRZ in Tube; ADA4841-1YRZ-R7 in Cut Tape with Digi-Reel; ADA4841-1YRZ-RL in Tape & Reel; TS461CDT in Cut Tape; TS971IDT in Cut Tape with Digi-Reel. These format differences do not affect electrical compatibility or PCB mounting.

Q: Which substitute offers the best performance upgrade?

A: The ADA4841 series provides the highest performance with 13 V/µs slew rate and 80 MHz bandwidth. These specifications are suitable for applications requiring faster signal processing. However, this upgrade comes with trade-offs in input bias current (3 µA versus 200 nA) and output current (60 mA versus 80 mA). Evaluate application requirements before selecting this option.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance, matching the TL971IDRG4 specification. All parts also carry unlimited moisture sensitivity rating (MSL 1) and REACH unaffected status.

Q: What is the inventory status for each substitute?

A: TL971IDR: 9,894 units in stock. ADA4841-1YRZ: 1,316 units. ADA4841-1YRZ-R7: 1,900 units. ADA4841-1YRZ-RL: 1,043 units. TS461CDT: 2,700 units. TS971IDT: 2,000 units. Inventory levels support production requirements across all substitute options.

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