TLE2072ACD Equivalent & Substitute Parts

Part Overview

The TLE2072ACD is a J-FET input operational amplifier manufactured by Texas Instruments, configured as a dual-channel (2 circuit) device in an 8-SOIC surface mount package. This component is classified as a Last Time Buy product, indicating discontinued production with limited remaining inventory (3100 pcs). The TLE2072ACD is designed for applications requiring low input bias current and low input offset voltage characteristics typical of J-FET amplifier architectures. Identification of equivalent and substitute parts is necessary to ensure design continuity and procurement flexibility for ongoing production requirements.

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	700	µV
Current - Supply	3.1 (x2 Channels)	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 TLE2072ACD is determined by strict alignment of electrical and mechanical parameters within the operational amplifier category. The primary substitution criteria are:

Critical Parameters for Substitution:

Package type: 8-SOIC surface mount form factor (0.154", 3.90mm width)
Number of circuits: Dual-channel (2 circuit) configuration
Amplifier architecture: J-FET input topology (preferred) or equivalent voltage feedback topology with compatible electrical characteristics
Supply voltage range: Minimum 4.5V to maximum 38V compatibility
Input bias current: ≤ 1 pA (J-FET devices) or ≤ 80 nA (voltage feedback alternatives)
Input offset voltage: ≤ 700 µV
Slew rate: ≥ 45 V/µs
Gain bandwidth product: ≥ 10 MHz
Output current per channel: ≥ 25 mA
Operating temperature range: 0°C to 70°C minimum coverage
Compliance: ROHS3 compliant, MSL 1

Substitute parts are grouped into two categories: Direct J-FET Equivalents (TLE2072AIDR, AD746JRZ) and Voltage Feedback Alternatives (LT1355 series, MC33078 series, MC1458DT). Direct equivalents maintain identical amplifier topology. Voltage feedback alternatives provide superior slew rate and bandwidth performance while maintaining compatible supply voltage and package specifications.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA/nA)	Input Offset (µV)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Product Status
TLE2072ACD	Texas Instruments	J-FET	45	10	1 pA	700	4.5	38	0 to 70	Last Time Buy
TLE2072AIDR	Texas Instruments	J-FET	45	10	20 pA	700	4.5	38	-40 to 85	Active
AD746JRZ	Analog Devices Inc.	J-FET	75	13	110 pA	300	9	36	0 to 70	Active
LT1355CS8	Analog Devices Inc.	Voltage Feedback	400	12	80 nA	300	5	30	0 to 70	Active
LT1355CS8#PBF	Analog Devices Inc.	Voltage Feedback	400	12	80 nA	300	5	30	0 to 70	Active
LT1355CS8#TR	Analog Devices Inc.	Voltage Feedback	400	12	80 nA	300	5	30	0 to 70	Active
LT1355CS8#TRPBF	Analog Devices Inc.	Voltage Feedback	400	12	80 nA	300	5	30	0 to 70	Active
MC1458DT	STMicroelectronics	General Purpose	0.8	1	30 nA	1000	5	30	0 to 70	Active
MC33078D	STMicroelectronics	General Purpose	7	15	250 nA	150	5	30	-40 to 105	Active
MC33078DT	STMicroelectronics	General Purpose	7	15	250 nA	150	5	30	-40 to 105	Active
MC33078YDT	STMicroelectronics	General Purpose	7	15	250 nA	150	5	30	-40 to 105	Active

Engineering Selection Recommendations

Primary Recommendation: TLE2072AIDR

The TLE2072AIDR is the manufacturer-recommended direct equivalent. This part maintains identical J-FET amplifier topology, slew rate (45 V/µs), and gain bandwidth product (10 MHz) as the TLE2072ACD. The TLE2072AIDR is in Active product status with higher inventory availability (4505 pcs) and extended operating temperature range (-40°C to 85°C). Input bias current specification increases from 1 pA to 20 pA, which remains within acceptable J-FET performance parameters. This part is ROHS3 compliant and MSL 1 rated, matching the original specification. Packaging is Cut Tape (CT) & Digi-Reel format, suitable for automated assembly processes.

Secondary Recommendation: AD746JRZ (Analog Devices Inc.)

The AD746JRZ provides J-FET input architecture with enhanced performance characteristics. Slew rate increases to 75 V/µs and gain bandwidth product to 13 MHz, delivering superior transient response. Input offset voltage improves to 300 µV. However, supply voltage minimum requirement increases to 9V (versus 4.5V for TLE2072ACD), which may require circuit redesign in low-voltage applications. Operating temperature range matches the original (0°C to 70°C). This part is Active status with 2113 pcs inventory. ROHS3 compliant and MSL 1 rated.

Tertiary Recommendation: LT1355CS8#TRPBF (Analog Devices Inc.)

The LT1355CS8#TRPBF series represents voltage feedback amplifier topology with significantly enhanced slew rate (400 V/µs) and comparable gain bandwidth product (12 MHz). Input offset voltage improves to 300 µV. This architecture is suitable for applications requiring high-speed signal processing. Supply voltage range is 5V to 30V, narrower than the original but adequate for most industrial applications. Highest inventory availability (50300 pcs) among all substitutes. Active product status ensures long-term availability. ROHS3 compliant and MSL 1 rated.

Not Recommended: MC1458DT

The MC1458DT exhibits insufficient performance for direct substitution. Slew rate (0.8 V/µs) and gain bandwidth product (1 MHz) fall significantly below TLE2072ACD specifications. Input offset voltage (1000 µV) exceeds acceptable tolerance. This part is suitable only for legacy general-purpose applications with relaxed bandwidth requirements.

Frequently Asked Questions (FAQ)

Q1: Can TLE2072AIDR directly replace TLE2072ACD without circuit modification?

A: Yes. The TLE2072AIDR maintains identical electrical specifications for slew rate, gain bandwidth product, supply voltage range, and package configuration. The increase in input bias current from 1 pA to 20 pA remains within J-FET performance envelope and does not require circuit redesign for standard applications. Extended temperature range (-40°C to 85°C) provides additional operational margin.

Q2: What are the key differences between J-FET and voltage feedback amplifier topologies in this comparison?

A: J-FET amplifiers (TLE2072AIDR, AD746JRZ) feature extremely low input bias current (1–110 pA range) and high input impedance, suitable for high-impedance signal sources and precision measurement circuits. Voltage feedback amplifiers (LT1355 series) provide higher slew rate (400 V/µs) and lower input offset voltage (300 µV), optimized for high-speed signal conditioning and audio applications. Selection depends on application requirements for input impedance versus bandwidth performance.

Q3: Why does AD746JRZ require minimum 9V supply while TLE2072ACD operates at 4.5V minimum?

A: The AD746JRZ internal circuit architecture requires higher minimum supply voltage for proper biasing and output stage operation. Applications designed for 4.5V minimum supply cannot use AD746JRZ without power supply redesign. Verify supply voltage availability before selecting this substitute.

Q4: Are all substitute parts ROHS3 compliant and MSL 1 rated?

A: Yes. All substitute parts listed meet ROHS3 compliance and MSL 1 (Unlimited moisture sensitivity) specifications, matching the original TLE2072ACD environmental and regulatory requirements.

Q5: What is the significance of packaging variants (Tube, Cut Tape, Digi-Reel) for the LT1355 series?

A: Packaging variants affect procurement and assembly processes. Tube packaging (LT1355CS8, LT1355CS8#PBF) suits manual assembly and small-volume production. Cut Tape & Digi-Reel formats (LT1355CS8#TR, LT1355CS8#TRPBF) are optimized for automated pick-and-place assembly in high-volume manufacturing. Electrical specifications remain identical across all packaging variants.

Q6: Can MC33078 series parts substitute for TLE2072ACD in precision low-bias-current applications?

A: No. MC33078 series parts (MC33078D, MC33078DT, MC33078YDT) are general-purpose amplifiers with input bias current of 250 nA, approximately 250,000 times higher than TLE2072ACD (1 pA). These parts are unsuitable for applications requiring ultra-low input bias current, such as transimpedance amplifiers or high-impedance sensor interfaces. MC33078 series is appropriate only for general-purpose signal conditioning where input bias current is not a critical parameter.

Q7: What inventory considerations should guide substitute part selection?

A: LT1355CS8#TRPBF offers highest inventory availability (50300 pcs), ensuring long-term procurement security. MC33078D provides substantial inventory (720400 pcs) for high-volume requirements. TLE2072AIDR (4505 pcs) and LT1355CS8#PBF (5337 pcs) support medium-volume production. AD746JRZ (2113 pcs) and MC33078YDT (7800 pcs) provide limited inventory for specialized applications. Verify supplier inventory status before finalizing design selection.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message