TL972IDRG4 Equivalent & Substitute Parts

Part Overview

The TL972IDRG4 is a general-purpose operational amplifier featuring dual circuits in an 8-SOIC surface mount package. Manufactured by Texas Instruments, this rail-to-rail amplifier is designed for applications requiring low-power, dual-channel signal conditioning and amplification. The device is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Amplifier Type	General Purpose
Number of Circuits	2
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 (x2 Channels)
Current - Output / Channel	80 mA
Voltage - Supply Span (Min)	2.7 V
Voltage - Supply Span (Max)	12 V
Operating Temperature	-40°C to 125°C
Package / Case	8-SOIC (0.154", 3.90 mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the TL972IDRG4 is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Dual-circuit general-purpose operational amplifier configuration
Rail-to-rail output capability
8-SOIC surface mount package with identical 0.154" (3.90 mm) width
Operating temperature range of -40°C to 125°C
ROHS3 compliance and MSL 1 rating
Supply voltage span compatibility (minimum 2.7 V, maximum 12 V)

Secondary Compatibility Parameters:

Slew rate of 5 V/µs or greater
Gain bandwidth product of 10 MHz or greater
Input bias current of 200 nA or lower
Input offset voltage of 1 mV or lower
Supply current of 2 mA per channel or lower
Output current per channel of 30 mA or greater

The substitute parts listed maintain functional equivalence within these defined electrical and mechanical boundaries, ensuring direct replacement capability in existing circuit designs.

Parameter Comparison

Parameter	TL972IDRG4	TL972IDR	MCP6H92-E/SN	OP262TRZ-EP	TS972IDT
Manufacturer	Texas Instruments	Texas Instruments	Microchip Technology	Analog Devices Inc.	STMicroelectronics
Product Status	Discontinued	Active	Active	Active	Active
Number of Circuits	2	2	2	2	2
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate (V/µs)	5	5	10	13	4
Gain Bandwidth Product (MHz)	12	12	10	15	12
Current - Input Bias (nA)	200	200	0.01	260	200
Voltage - Input Offset (mV)	1	1	1	0.025	1
Current - Supply (mA, x2 Channels)	2	2	2	0.65	2
Current - Output / Channel (mA)	80	80	41	30	100
Voltage - Supply Span (Min, V)	2.7	2.7	3.5	2.7	2.7
Voltage - Supply Span (Max, V)	12	12	12	12	10
Operating Temperature (°C)	-40 to 125	-40 to 125	-40 to 125	-55 to 125	-40 to 125
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1	1	1	1	1

Engineering Selection Recommendations

TL972IDR (Texas Instruments)

The TL972IDR is the primary recommended substitute. As an active product from the same manufacturer, it provides identical electrical specifications to the TL972IDRG4, including slew rate, gain bandwidth product, input bias current, and output current capability. The device maintains full compatibility with existing circuit designs and PCB layouts. Packaging is available in Cut Tape and Digi-Reel formats with 35,100 units in stock, ensuring supply continuity.

TS972IDT (STMicroelectronics)

The TS972IDT offers equivalent performance with automotive-grade qualification (AEC-Q100) and is suitable for applications requiring enhanced reliability. This device matches the TL972IDRG4 across critical parameters with the exception of maximum supply voltage (10 V versus 12 V) and slew rate (4 V/µs versus 5 V/µs). Selection is appropriate for automotive and industrial applications where AEC-Q100 certification is required. Inventory availability is 15,604 units.

OP262TRZ-EP (Analog Devices Inc.)

The OP262TRZ-EP provides enhanced performance characteristics including higher slew rate (13 V/µs), superior gain bandwidth product (15 MHz), and lower input offset voltage (25 µV). However, output current per channel is reduced to 30 mA. This device is suitable for applications where improved dynamic performance and precision are prioritized over output current capability. Operating temperature range extends to -55°C, providing broader environmental coverage. Inventory is 1,099 units.

MCP6H92-E/SN (Microchip Technology)

The MCP6H92-E/SN features exceptionally low input bias current (10 pA) and is appropriate for high-impedance signal conditioning applications. Minimum supply voltage is elevated to 3.5 V, and output current per channel is limited to 41 mA. This device is suitable for precision measurement and sensor interface applications where input bias current minimization is critical. Inventory is 1,513 units.

Frequently Asked Questions (FAQ)

Q: Can the TL972IDR be used as a direct replacement for the TL972IDRG4?

A: Yes. The TL972IDR provides identical electrical specifications and is housed in the same 8-SOIC package. No circuit modifications are required for direct substitution.

Q: What is the primary difference between the TL972IDRG4 and TS972IDT?

A: The TS972IDT is automotive-qualified (AEC-Q100) and has a maximum supply voltage of 10 V compared to 12 V for the TL972IDRG4. The slew rate is also slightly lower at 4 V/µs. Selection depends on whether automotive qualification is required and whether the 10 V maximum supply voltage is compatible with the application.

Q: Is the OP262TRZ-EP suitable for applications requiring 80 mA output current per channel?

A: No. The OP262TRZ-EP provides only 30 mA output current per channel, which is insufficient for applications requiring the full 80 mA capability of the TL972IDRG4. Alternative substitutes should be selected for high-current output applications.

Q: What is the significance of the MCP6H92-E/SN's 10 pA input bias current?

A: The 10 pA input bias current is approximately 20,000 times lower than the TL972IDRG4's 200 nA specification. This characteristic is beneficial for high-impedance signal conditioning, precision instrumentation, and sensor interface applications where input bias current-induced errors must be minimized.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (TL972IDR, TS972IDT, OP262TRZ-EP, and MCP6H92-E/SN) are ROHS3 compliant with MSL 1 rating, ensuring compatibility with modern manufacturing and environmental standards.

Q: What is the impact of the MCP6H92-E/SN's 3.5 V minimum supply voltage?

A: Applications requiring operation below 3.5 V supply voltage cannot use the MCP6H92-E/SN. The TL972IDRG4, TL972IDR, OP262TRZ-EP, and TS972IDT all support 2.7 V minimum supply voltage and are suitable for low-voltage applications.

Q: Can the OP262TRZ-EP be used in applications with extended temperature requirements below -40°C?

A: Yes. The OP262TRZ-EP operates from -55°C to 125°C, providing extended low-temperature capability compared to the TL972IDRG4's -40°C to 125°C range. This device is suitable for aerospace, military, and extreme environment applications.

Q: Are there packaging format differences among the substitute parts?

A: Yes. TL972IDR is available in Cut Tape and Digi-Reel formats. TS972IDT is available in Cut Tape. OP262TRZ-EP and MCP6H92-E/SN are available in Tube packaging. All devices use the identical 8-SOIC package footprint, ensuring PCB compatibility regardless of packaging format.

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