TLE2072CD Equivalent & Substitute Parts

Part Overview

The TLE2072CD is a J-FET input operational amplifier featuring two independent circuits in an 8-SOIC surface mount package. Manufactured by Texas Instruments, this device is classified as a Last Time Buy product, indicating discontinued production with limited remaining inventory. The TLE2072CD delivers high input impedance and low input bias current characteristics suitable for precision signal conditioning applications. Due to its Last Time Buy status, identifying functionally equivalent substitute components is essential for design continuity and long-term supply chain planning.

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	1	pA
Voltage - Input Offset	300	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	0 to 70	°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

Substitution of the TLE2072CD is determined by strict alignment of electrical and mechanical parameters within the operational amplifier category. The primary substitution criteria are:

Critical Parameters for Substitution:

Amplifier Type (J-FET input topology)
Number of Circuits (dual configuration)
Package / Case (8-SOIC form factor)
Mounting Type (Surface Mount)
Voltage Supply Range compatibility
Operating Temperature range coverage

Substitute parts are grouped into two categories based on amplifier type:

Category 1: J-FET Input Amplifiers — Direct functional equivalents maintaining J-FET input topology. These parts preserve the ultra-low input bias current characteristic (1–7 pA range) and high input impedance of the TLE2072CD. Includes TLE2072CDR, LT1057 series variants.

Category 2: General Purpose and Audio Amplifiers — Alternative topologies with different input characteristics. These parts feature higher input bias currents (20–300 nA range) and different bandwidth specifications. Includes AS358AMTR-G1, LM358ADR2G, and LM833 series variants. Selection from this category requires application-level verification of input impedance and bias current tolerance.

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)	Package	Status
TLE2072CD	Texas Instruments	J-FET	45	10	1 pA	300 µV	3.1	48	4.5	38	0 to 70	8-SOIC	Last Time Buy
TLE2072CDR	Texas Instruments	J-FET	45	10	1 pA	300 µV	3.1	48	4.5	38	0 to 70	8-SOIC	Active
LT1057IS8#TRPBF	Analog Devices Inc.	J-FET	13	5	7 pA	220 µV	1.7	—	20	36	-40 to 85	8-SOIC	Active
LT1057S8#TRPBF	Analog Devices Inc.	J-FET	13	5	7 pA	220 µV	1.7	—	20	36	0 to 70	8-SOIC	Active
LT1057IS8#PBF	Analog Devices Inc.	J-FET	13	5	7 pA	220 µV	1.7	—	20	36	-40 to 85	8-SOIC	Active
LT1057S8#PBF	Analog Devices Inc.	J-FET	13	5	7 pA	220 µV	1.7	—	20	36	0 to 70	8-SOIC	Active
LT1057IS8	Analog Devices Inc.	J-FET	13	5	7 pA	220 µV	1.7	—	20	36	-40 to 85	8-SOIC	Active
AS358AMTR-G1	Diodes Incorporated	General Purpose	—	—	20 nA	2 mV	0.7	40	3	36	-40 to 85	8-SOIC	Active
LM358ADR2G	onsemi	General Purpose	—	1	45 nA	2 mV	0.8	40	3	32	0 to 70	8-SOIC	Active
LM833DR2G	onsemi	Audio	7	15	300 nA	300 µV	4	29	10	36	-40 to 85	8-SOIC	Active
LM833DT	STMicroelectronics	Audio	7	15	300 nA	300 µV	4	37	5	30	-40 to 105	8-SOIC	Active

Engineering Selection Recommendations

Primary Recommendation: TLE2072CDR

The TLE2072CDR is the direct functional equivalent of the TLE2072CD, manufactured by Texas Instruments with identical electrical specifications and 8-SOIC packaging. This part maintains all critical parameters including J-FET input topology, 45 V/µs slew rate, 10 MHz gain bandwidth product, and 1 pA input bias current. The TLE2072CDR is in Active product status with 2814 units in stock, providing supply continuity. Both parts are ROHS3 compliant with MSL 1 rating and identical compliance certifications.

Secondary Recommendation: LT1057 Series (Analog Devices Inc.)

The LT1057 family—available as LT1057IS8#TRPBF, LT1057S8#TRPBF, LT1057IS8#PBF, LT1057S8#PBF, and LT1057IS8—provides J-FET input topology preservation with Active product status. These parts maintain ultra-low input bias current (7 pA) and low input offset voltage (220 µV), preserving high input impedance characteristics. Trade-offs include reduced slew rate (13 V/µs versus 45 V/µs), lower gain bandwidth product (5 MHz versus 10 MHz), and higher minimum supply voltage requirement (20 V versus 4.5 V). Operating temperature variants support both 0–70°C and -40–85°C ranges. Inventory availability ranges from 1515 to 4307 units across packaging options.

Alternative Consideration: LM833 Series (Audio Applications)

The LM833DR2G (onsemi) and LM833DT (STMicroelectronics) are Audio amplifiers with dual circuits in 8-SOIC packaging. These parts feature 15 MHz gain bandwidth product and 7 V/µs slew rate, exceeding TLE2072CD bandwidth performance. However, input bias current is 300 nA, representing a 300,000× increase over the TLE2072CD. Selection of LM833 variants is appropriate only for applications where input impedance and bias current are non-critical. Both variants are Active with extensive inventory (45,855 and 166,607 units respectively).

Not Recommended: AS358AMTR-G1 and LM358ADR2G

General Purpose amplifiers AS358AMTR-G1 and LM358ADR2G feature input bias currents of 20 nA and 45 nA respectively, representing 20,000× to 45,000× increase over TLE2072CD specifications. These parts lack J-FET input topology and are unsuitable for applications requiring high input impedance or ultra-low bias current. Selection of these parts requires fundamental circuit redesign verification.

Frequently Asked Questions (FAQ)

Q: Can TLE2072CDR be used as a direct replacement for TLE2072CD?

A: Yes. The TLE2072CDR is electrically and mechanically identical to the TLE2072CD. Both parts feature J-FET input topology, identical slew rate (45 V/µs), gain bandwidth product (10 MHz), input bias current (1 pA), and 8-SOIC packaging. The primary difference is product status: TLE2072CDR is Active while TLE2072CD is Last Time Buy. Substitution requires no circuit modifications.

Q: What are the key differences between J-FET and General Purpose amplifier substitutes?

A: J-FET input amplifiers (TLE2072CD, LT1057 series) feature input bias currents in the picoampere range (1–7 pA) and extremely high input impedance, suitable for high-impedance signal sources and precision instrumentation. General Purpose amplifiers (AS358AMTR-G1, LM358ADR2G) feature input bias currents in the nanoampere range (20–45 nA), representing 20,000× to 45,000× higher bias current. General Purpose amplifiers are suitable for low-impedance applications and general-purpose signal conditioning where input impedance is not critical.

Q: Can LT1057 series parts replace TLE2072CD in all applications?

A: LT1057 series parts preserve J-FET input topology and ultra-low bias current characteristics, making them suitable for high-impedance applications. However, electrical performance differs in three areas: (1) Slew Rate: LT1057 provides 13 V/µs versus TLE2072CD's 45 V/µs, limiting high-frequency transient response; (2) Gain Bandwidth Product: LT1057 provides 5 MHz versus TLE2072CD's 10 MHz, reducing bandwidth; (3) Minimum Supply Voltage: LT1057 requires minimum 20 V supply versus TLE2072CD's 4.5 V. Applications requiring high slew rate, wide bandwidth, or low supply voltage operation require circuit-level verification before substitution.

Q: What is the significance of packaging variants (Tube, Cut Tape, Tape & Reel)?

A: Packaging variants affect supply chain logistics and manufacturing integration but do not alter electrical performance. Tube packaging is suitable for manual assembly and small-volume production. Cut Tape (CT) & Digi-Reel® packaging supports semi-automated assembly. Tape & Reel (TR) packaging is optimized for high-volume automated pick-and-place assembly. Selection depends on production volume and assembly equipment capability, not circuit functionality.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed—TLE2072CDR, LT1057 series, AS358AMTR-G1, LM358ADR2G, and LM833 series—are ROHS3 compliant. All parts are also REACH Unaffected and carry EAR99 ECCN classification, matching the compliance profile of the TLE2072CD.

Q: What is the Moisture Sensitivity Level (MSL) significance?

A: Moisture Sensitivity Level indicates the maximum time a component can be exposed to ambient conditions (30°C, 85% relative humidity) before requiring baking. TLE2072CD and most substitute parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. AS358AMTR-G1 carries MSL 3 (168 Hours), requiring baking if storage exceeds 168 hours in ambient conditions. MSL 1 parts offer superior shelf-life and handling flexibility.

Q: Why does LM833 series have higher inventory than TLE2072CD?

A: LM833 series parts (45,855 and 166,607 units) are in Active production status with broad application use in audio signal conditioning. TLE2072CD (1,460 units) is Last Time Buy, indicating discontinued production with limited remaining inventory. Higher inventory for LM833 reflects ongoing production demand and broader market applicability across consumer audio and general-purpose amplification applications.

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