TLE2072AIDG4 Equivalent & Substitute Parts

Part Overview

The TLE2072AIDG4 is a J-FET input operational amplifier manufactured by Texas Instruments, configured as a dual-channel (2 circuit) device in 8-SOIC surface mount packaging. This device is classified as Last Time Buy, indicating discontinued production with limited inventory availability. The TLE2072AIDG4 is ROHS3 compliant and carries MSL Level 1 (unlimited moisture sensitivity rating). Substitute parts are necessary due to inventory constraints and product lifecycle status to ensure continued design support and procurement flexibility.

Key Parameters

Parameter	Value	Unit
Amplifier Type	J-FET	—
Number of Circuits	2	—
Slew Rate	45	V/µs
Gain Bandwidth Product	10	MHz
Current - Input Bias	20	pA
Voltage - Input Offset	700	µV
Current - Supply (x2 Channels)	3.1	mA
Current - Output / Channel	48	mA
Voltage - Supply Span (Min)	4.5	V
Voltage - Supply Span (Max)	38	V
Operating Temperature	-40 to 85	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
MSL Rating	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the TLE2072AIDG4 is determined by strict alignment of electrical and mechanical parameters. The primary substitution criteria are:

Critical Parameters for Substitution:

Amplifier Type (J-FET input topology)
Number of Circuits (dual-channel configuration)
Package / Case (8-SOIC form factor)
Mounting Type (Surface Mount)
Supply Voltage Range compatibility (minimum 4.5V, maximum 38V)
Operating Temperature Range (minimum -40°C, maximum 85°C)

Substitute parts are grouped into two categories:

Category 1: Direct Texas Instruments TLE2072 Series Variants Parts TLE2072AID and TLE2072AIDR are packaging variants of the same base product (TLE2072) with identical electrical specifications. These maintain J-FET amplifier topology, dual-circuit configuration, and all key electrical parameters. TLE2072AIDR is Active product status, while TLE2072AID is Last Time Buy.

Category 2: Cross-Manufacturer J-FET Alternatives The AD746JRZ (Analog Devices Inc.) is a J-FET dual-channel amplifier in 8-SOIC packaging. While it maintains the same package and circuit count, it exhibits higher slew rate (75V/µs vs. 45V/µs), higher gain bandwidth product (13 MHz vs. 10 MHz), and different input bias current (110 pA vs. 20 pA). Operating temperature range is 0°C to 70°C, which is narrower than the TLE2072AIDG4.

Category 3: General Purpose and Voltage Feedback Alternatives Parts MC33078D, MC33078DT, MC1458DT, and LT1355 series represent broader functional alternatives with different amplifier topologies (General Purpose or Voltage Feedback). These parts share 8-SOIC packaging and dual-circuit configuration but differ in input stage technology, slew rate, and bandwidth characteristics.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA/nA)	Input Offset (µV/mV)	Supply Current (mA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Product Status
TLE2072AIDG4	Texas Instruments	J-FET	45	10	20 pA	700 µV	3.1	48	4.5	38	-40 to 85	Last Time Buy
TLE2072AID	Texas Instruments	J-FET	45	10	20 pA	700 µV	3.1	48	4.5	38	-40 to 85	Last Time Buy
TLE2072AIDR	Texas Instruments	J-FET	45	10	20 pA	700 µV	3.1	48	4.5	38	-40 to 85	Active
AD746JRZ	Analog Devices Inc.	J-FET	75	13	110 pA	300 µV	7	25	9	36	0 to 70	Active
MC33078D	STMicroelectronics	General Purpose	7	15	250 nA	150 µV	4	37	5	30	-40 to 105	Active
MC33078DT	STMicroelectronics	General Purpose	7	15	250 nA	150 µV	4	37	5	30	-40 to 105	Active
MC1458DT	STMicroelectronics	General Purpose	0.8	1	30 nA	1 mV	2.3	25	5	30	0 to 70	Active
LT1355CS8#TRPBF	Analog Devices Inc.	Voltage Feedback	400	12	80 nA	300 µV	1	30	5	30	0 to 70	Active

Engineering Selection Recommendations

Primary Recommendation: TLE2072AIDR

The TLE2072AIDR is the preferred substitute for the TLE2072AIDG4. Both parts are identical in electrical specifications and packaging. The TLE2072AIDR maintains Active product status with 4505 units in stock, ensuring long-term availability. This part is supplied in Cut Tape (CT) & Digi-Reel® packaging format. Both parts are ROHS3 compliant, MSL Level 1, and carry identical REACH and ECCN classifications. Selection of TLE2072AIDR eliminates all technical risk associated with substitution.

Secondary Recommendation: TLE2072AID

The TLE2072AID is electrically identical to the TLE2072AIDG4 with 3700 units available in Tube packaging. This part shares Last Time Buy status with the original part. Use TLE2072AID only when Tube packaging format is required or when Cut Tape format is unavailable.

Alternative for Extended Temperature Range: MC33078DT

The MC33078DT (STMicroelectronics) extends the operating temperature range to -40°C to 105°C and is AEC-Q100 qualified for automotive applications. This part is General Purpose amplifier type rather than J-FET, with higher slew rate (7V/µs vs. 45V/µs) and higher gain bandwidth product (15 MHz vs. 10 MHz). The MC33078DT is suitable only for applications where the extended temperature capability justifies the different input stage characteristics. Supply voltage range is 5V to 30V, which is narrower than the TLE2072AIDG4 (4.5V to 38V).

Not Recommended: AD746JRZ

The AD746JRZ is J-FET type but has narrower operating temperature range (0°C to 70°C) and higher minimum supply voltage (9V vs. 4.5V). These constraints make it unsuitable for designs requiring the full -40°C to 85°C range or low-voltage operation of the TLE2072AIDG4.

Not Recommended: LT1355 Series

The LT1355 series uses Voltage Feedback topology rather than J-FET input stage. While it offers superior slew rate (400V/µs), this represents a fundamental architectural change unsuitable for direct substitution without circuit redesign.

Not Recommended: MC1458DT

The MC1458DT has significantly lower gain bandwidth product (1 MHz vs. 10 MHz) and slower slew rate (0.8V/µs vs. 45V/µs), making it unsuitable for applications requiring the TLE2072AIDG4 bandwidth characteristics.

Frequently Asked Questions (FAQ)

Q1: Can I use TLE2072AIDR as a direct replacement for TLE2072AIDG4 without circuit modification?

A: Yes. The TLE2072AIDR is electrically and mechanically identical to the TLE2072AIDG4. Both parts have identical slew rate (45V/µs), gain bandwidth product (10 MHz), input bias current (20 pA), input offset voltage (700 µV), supply current (3.1 mA), output current (48 mA), supply voltage range (4.5V to 38V), and operating temperature range (-40°C to 85°C). The only difference is packaging format (Cut Tape & Digi-Reel® vs. standard 8-SOIC) and product status (Active vs. Last Time Buy). No circuit redesign is required.

Q2: What is the difference between TLE2072AID and TLE2072AIDR?

A: Both parts are electrically identical variants of the TLE2072 base product. The difference is packaging format: TLE2072AID is supplied in Tube packaging, while TLE2072AIDR is supplied in Cut Tape (CT) & Digi-Reel® format. TLE2072AIDR has Active product status with higher inventory (4505 units), while TLE2072AID is Last Time Buy with 3700 units. Select based on your assembly process packaging requirements.

Q3: Why is the AD746JRZ not recommended as a substitute?

A: The AD746JRZ has three critical limitations: (1) Operating temperature range is 0°C to 70°C, which does not cover the full -40°C to 85°C range of the TLE2072AIDG4; (2) Minimum supply voltage is 9V, which exceeds the TLE2072AIDG4 minimum of 4.5V, making it unsuitable for low-voltage applications; (3) Input bias current is 110 pA versus 20 pA, which may affect precision analog circuits. Use AD746JRZ only if your application operates within 0°C to 70°C and requires minimum 9V supply.

Q4: Can I substitute the TLE2072AIDG4 with MC33078DT?

A: MC33078DT is not a direct substitute. While both are dual-channel amplifiers in 8-SOIC packaging, the MC33078DT uses General Purpose amplifier topology rather than J-FET input stage. This results in different input characteristics: input bias current is 250 nA (vs. 20 pA), input offset voltage is 150 µV (vs. 700 µV), and slew rate is 7V/µs (vs. 45V/µs). Additionally, supply voltage range is 5V to 30V (vs. 4.5V to 38V). Substitution requires circuit analysis and potential redesign. Use MC33078DT only if your application can tolerate these electrical differences and operates within the narrower supply range.

Q5: What does "Last Time Buy" status mean for the TLE2072AIDG4?

A: Last Time Buy indicates that Texas Instruments has discontinued production of this part. The TLE2072AIDG4 will not be manufactured after existing inventory is depleted. This is why substitute parts are necessary. The TLE2072AIDR (Active status) is the recommended long-term replacement, as it will continue to be manufactured and supported by Texas Instruments.

Q6: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this document are ROHS3 compliant and carry MSL Level 1 (unlimited) moisture sensitivity rating, matching the compliance profile of the TLE2072AIDG4.

Q7: Which substitute part has the highest inventory availability?

A: The MC33078D has the highest inventory with 720,400 units in stock. However, this part is not electrically equivalent to the TLE2072AIDG4 due to different amplifier topology. For electrically equivalent parts, the TLE2072AIDR has 4505 units available, followed by LT1355CS8#TRPBF with 50,300 units (though LT1355 is not a direct substitute).

Q8: Can I use LT1355CS8#TRPBF in place of TLE2072AIDG4?

A: No. The LT1355CS8#TRPBF uses Voltage Feedback amplifier topology, which is fundamentally different from the J-FET input stage of the TLE2072AIDG4. While both are dual-channel amplifiers in 8-SOIC packaging, the LT1355 has dramatically different performance characteristics: slew rate is 400V/µs (vs. 45V/µs), input bias current is 80 nA (vs. 20 pA), and supply voltage range is 5V to 30V (vs. 4.5V to 38V). Substitution would require complete circuit redesign and is not recommended for direct replacement.

Q9: What packaging formats are available for TLE2072 substitutes?

A: The TLE2072AIDG4 is supplied in standard 8-SOIC packaging. Substitute variants are available in: Tube (TLE2072AID), Cut Tape & Digi-Reel® (TLE2072AIDR), and other formats depending on the specific part number. Verify packaging format compatibility with your assembly process before ordering.

Q10: Is MC1458DT suitable for high-speed applications?

A: No. The MC1458DT has a gain bandwidth product of only 1 MHz and slew rate of 0.8V/µs, compared to the TLE2072AIDG4 specifications of 10 MHz and 45V/µs respectively. The MC1458DT is a legacy general-purpose amplifier suitable only for low-frequency applications. It is not recommended for applications requiring the bandwidth and slew rate of the TLE2072AIDG4.

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