TL032IDRG4 Equivalent & Substitute Parts

Part Overview

The TL032IDRG4 is a J-FET input operational amplifier featuring dual circuits in an 8-SOIC surface mount package, manufactured by Texas Instruments. This device is classified as obsolete product status. The TL032IDRG4 operates across a supply voltage range of 10V to 30V with a slew rate of 5.1V/µs and gain bandwidth product of 1.1 MHz. Due to its obsolete status, identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production and maintenance applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	TL032IDRG4
Manufacturer	Texas Instruments
Category	Linear, Amplifiers
Amplifier Type	J-FET
Number of Circuits	2
Package / Case	8-SOIC (0.154", 3.90mm Width)
Slew Rate	5.1V/µs
Gain Bandwidth Product	1.1 MHz
Current - Input Bias	2 pA
Voltage - Input Offset	570 µV
Current - Supply	434µA (x2 Channels)
Current - Output / Channel	40 mA
Voltage - Supply Span (Min)	10 V
Voltage - Supply Span (Max)	30 V
Operating Temperature	-40°C ~ 85°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 TL032IDRG4 is determined by the following critical parameters: amplifier type (J-FET), number of circuits (2), package type (8-SOIC), supply voltage range compatibility, slew rate, gain bandwidth product, input bias current, input offset voltage, and operating temperature range.

The substitute parts are grouped into two primary categories:

Category 1: Direct J-FET Amplifier Substitutes (Highest Compatibility) These parts maintain J-FET amplifier topology with dual circuits in 8-SOIC packaging. Substitutes in this category include TL032IDR, LF253DT, LF353DT, and LT1457 variants. These devices preserve the core J-FET input characteristics while offering active product status and improved availability.

Category 2: General Purpose and Audio Amplifier Alternatives (Functional Compatibility) These parts provide operational amplifier functionality with dual circuits in 8-SOIC packaging but differ in amplifier type or performance characteristics. Substitutes include LM258ADT, LM258AYDT, LM2904AYDT, and LM833DT. These devices are suitable when J-FET input characteristics are not critical to circuit performance.

Parameter Comparison

Parameter	TL032IDRG4	TL032IDR	LF253DT	LF353DT	LM258ADT	LT1457S8
Amplifier Type	J-FET	J-FET	J-FET	J-FET	General Purpose	J-FET
Number of Circuits	2	2	2	2	2	2
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Slew Rate	5.1V/µs	5.1V/µs	16V/µs	16V/µs	0.6V/µs	4V/µs
Gain Bandwidth Product	1.1 MHz	1.1 MHz	4 MHz	4 MHz	1.1 MHz	1.7 MHz
Current - Input Bias	2 pA	2 pA	20 pA	20 pA	20 nA	7 pA
Voltage - Input Offset	570 µV	570 µV	3 mV	3 mV	1 mV	220 µV
Current - Supply	434µA (x2)	434µA (x2)	1.4mA (x2)	1.4mA (x2)	700µA (x2)	1.8mA (x2)
Current - Output / Channel	40 mA	40 mA	40 mA	40 mA	40 mA	Not specified
Voltage - Supply Span (Min)	10 V	10 V	6 V	6 V	3 V	9 V
Voltage - Supply Span (Max)	30 V	30 V	36 V	36 V	30 V	36 V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 105°C	0°C ~ 70°C	-40°C ~ 105°C	-40°C ~ 85°C
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute: TL032IDR

The TL032IDR is the manufacturer-recommended direct substitute for the TL032IDRG4. This part maintains identical electrical specifications including J-FET amplifier type, dual circuits, 5.1V/µs slew rate, 1.1 MHz gain bandwidth product, 2 pA input bias current, and 570 µV input offset voltage. The TL032IDR differs only in packaging format (Tape & Reel versus tube) and holds active product status with 30,343 units in stock. This substitute is suitable for all applications where the TL032IDRG4 was originally specified.

Secondary Substitutes: LF253DT and LF353DT

The LF253DT and LF353DT are STMicroelectronics J-FET amplifiers with dual circuits in 8-SOIC packaging. Both devices maintain J-FET input topology and 40 mA output current per channel. These parts offer enhanced performance with 16V/µs slew rate and 4 MHz gain bandwidth product. The LF253DT operates across -40°C to 105°C, while the LF353DT operates across 0°C to 70°C. Both are ROHS3 compliant with MSL 1 rating. Selection between these and the TL032IDR depends on whether the application requires the higher slew rate and bandwidth of the LF253/LF353 series.

Alternative Substitute: LT1457S8 Variants

The LT1457S8, LT1457S8#PBF, and LT1457S8#TRPBF are Analog Devices J-FET amplifiers with dual circuits in 8-SOIC packaging. These devices feature 4V/µs slew rate, 1.7 MHz gain bandwidth product, and 7 pA input bias current. Operating temperature range is -40°C to 85°C. Supply voltage range extends to 36V maximum. These parts are suitable for applications requiring J-FET input characteristics with active product status.

General Purpose Alternative: LM258ADT

The LM258ADT is an STMicroelectronics general purpose amplifier with dual circuits in 8-SOIC packaging. This device differs from the TL032IDRG4 in amplifier type (general purpose versus J-FET) and performance characteristics. The LM258ADT features 0.6V/µs slew rate, 1.1 MHz gain bandwidth product, and 20 nA input bias current. Operating temperature range extends to 105°C. This part is suitable only for applications where J-FET input characteristics are not required and general purpose amplifier performance is acceptable.

All recommended substitutes are ROHS3 compliant with MSL 1 rating, ensuring compatibility with modern manufacturing and environmental requirements.

Frequently Asked Questions (FAQ)

Q1: Can the TL032IDR directly replace the TL032IDRG4 in existing designs?

A: Yes. The TL032IDR is the manufacturer-recommended substitute with identical electrical specifications. The only difference is packaging format (Tape & Reel versus tube). Both parts are ROHS3 compliant with MSL 1 rating and operate across -40°C to 85°C. No circuit modifications are required.

Q2: What is the primary difference between J-FET and general purpose amplifiers like the LM258ADT?

A: J-FET amplifiers feature extremely low input bias current (2 pA for TL032IDRG4 versus 20 nA for LM258ADT) and are suitable for high-impedance input applications. General purpose amplifiers have higher input bias current but lower supply current and wider supply voltage range. Selection depends on circuit requirements for input impedance and bias current characteristics.

Q3: Why do LF253DT and LF353DT have higher slew rates than the TL032IDRG4?

A: The LF253DT and LF353DT are designed for higher-speed applications with 16V/µs slew rate and 4 MHz gain bandwidth product compared to the TL032IDRG4's 5.1V/µs and 1.1 MHz. These enhanced specifications make them suitable for applications requiring faster signal processing, though they consume more supply current (1.4mA versus 434µA).

Q4: Is the LT1457S8 suitable for all applications where the TL032IDRG4 was used?

A: The LT1457S8 maintains J-FET input topology and dual circuits in 8-SOIC packaging with compatible supply voltage range (9V to 36V). However, the slew rate (4V/µs) and gain bandwidth product (1.7 MHz) differ from the TL032IDRG4. Verification of circuit performance is necessary for applications with strict bandwidth or slew rate requirements.

Q5: What are the packaging differences among substitute parts?

A: All substitute parts use 8-SOIC (0.154", 3.90mm Width) surface mount package, ensuring mechanical compatibility. Packaging format differences include Tape & Reel (TR), Cut Tape (CT) & Digi-Reel®, and Tube. These differences affect handling and assembly processes but do not impact electrical performance or pin compatibility.

Q6: Are all substitute parts ROHS3 compliant?

A: Yes. All recommended substitute parts including TL032IDR, LF253DT, LF353DT, LM258ADT, LM258AYDT, LM2904AYDT, LM833DT, and LT1457 variants are ROHS3 compliant with MSL 1 (Unlimited) rating. All parts are REACH unaffected and classified as EAR99 for export control purposes.

Q7: Which substitute offers the best availability?

A: The LM833DT offers the highest inventory with 166,607 units in stock, followed by LF253DT with 72,138 units and LM258ADT with 60,400 units. The TL032IDR offers 30,343 units. Availability should be verified with suppliers for current production requirements.

Q8: Can the LM2904AYDT be used as a substitute?

A: The LM2904AYDT is a general purpose amplifier with dual circuits in 8-SOIC packaging. It differs from the TL032IDRG4 in amplifier type and features single-ended output configuration. This part is suitable only for applications where J-FET input characteristics are not critical and general purpose amplifier performance is acceptable.

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