TLE2081ACD Equivalent & Substitute Parts

Part Overview

The TLE2081ACD is a J-FET input operational amplifier manufactured by Texas Instruments in the Excalibur™ series. This device is a single-circuit, 8-SOIC surface mount integrated circuit designed for low-input-bias-current applications. The TLE2081ACD is currently in Last Time Buy status, indicating that production has been discontinued and existing inventory is limited. Identification of equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications currently utilizing this component.

Key Parameters

Parameter	Value	Unit
Amplifier Type	J-FET	—
Number of Circuits	1	—
Slew Rate	45	V/µs
Gain Bandwidth Product	10	MHz
Current - Input Bias	20	pA
Voltage - Input Offset	470	µV
Current - Supply	1.7	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

Substitute parts for the TLE2081ACD are grouped based on strict electrical and mechanical compatibility criteria. The primary substitution logic is determined by the following parameters:

Critical Compatibility Parameters:

Amplifier Type: J-FET (required for input bias current performance)
Number of Circuits: 1 (single operational amplifier)
Package / Case: 8-SOIC (0.154", 3.90mm Width) (physical and electrical pin compatibility)
Mounting Type: Surface Mount (assembly process compatibility)
Operating Temperature Range: 0°C to 70°C (minimum requirement)
Supply Voltage Range: Minimum 4.5 V to Maximum 38 V (operational envelope)

Performance Parameters Affecting Substitution:

Slew Rate: 45 V/µs (baseline performance metric)
Gain Bandwidth Product: 10 MHz (frequency response characteristic)
Current - Input Bias: 20 pA (low-bias-current specification)
Voltage - Input Offset: 470 µV (precision metric)

Substitute parts are classified into two categories:

Category 1: Direct Equivalents (Identical Electrical Specifications) Parts that maintain all critical electrical parameters and supply voltage range, differing only in packaging format or product status.

Category 2: Functional Alternatives (Enhanced or Modified Specifications) Parts that share the J-FET amplifier type and 8-SOIC package but exhibit different performance characteristics in slew rate, bandwidth, input bias current, or supply voltage range. These parts are suitable for applications where the enhanced specifications do not create design conflicts.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	Gain Bandwidth Product (MHz)	Input Bias Current (pA)	Input Offset Voltage (µV)	Supply Current (mA)	Output Current (mA)	Supply Voltage Min (V)	Supply Voltage Max (V)	Operating Temp (°C)	Package	Product Status
TLE2081ACD	Texas Instruments	J-FET	45	10	20	470	1.7	48	4.5	38	0 to 70	8-SOIC	Last Time Buy
TLE2081ACDR	Texas Instruments	J-FET	45	10	20	470	1.7	48	4.5	38	0 to 70	8-SOIC	Active
AD744JRZ-REEL	Analog Devices Inc.	J-FET	75	13	30	300	3.5	25	9	36	0 to 70	8-SOIC	Active
AD744JRZ-REEL7	Analog Devices Inc.	J-FET	75	13	30	300	3.5	25	9	36	0 to 70	8-SOIC	Active
AD847JRZ	Analog Devices Inc.	General Purpose	300	50	3300	500	5.3	32	9	36	0 to 70	8-SOIC	Active
AD847JRZ-REEL	Analog Devices Inc.	General Purpose	300	50	3300	500	5.3	32	9	36	0 to 70	8-SOIC	Active
AD847JRZ-REEL7	Analog Devices Inc.	General Purpose	300	50	3300	500	5.3	32	9	36	0 to 70	8-SOIC	Active
AD8610ARZ	Analog Devices Inc.	J-FET	60	25	3	85	3	45	10	26	-40 to 125	8-SOIC	Active
AD8610ARZ-REEL	Analog Devices Inc.	J-FET	60	25	3	85	3	45	10	26	-40 to 125	8-SOIC	Active
AD8610ARZ-REEL7	Analog Devices Inc.	J-FET	60	25	3	85	3	45	10	26	-40 to 125	8-SOIC	Active
AD8610BRZ	Analog Devices Inc.	J-FET	60	25	3	45	3	45	10	26	-40 to 125	8-SOIC	Active

Engineering Selection Recommendations

Primary Recommendation: TLE2081ACDR

The TLE2081ACDR is the direct equivalent substitute for the TLE2081ACD. This part maintains identical electrical specifications across all critical parameters: J-FET amplifier type, 45 V/µs slew rate, 10 MHz gain bandwidth product, 20 pA input bias current, 470 µV input offset voltage, and 4.5 V to 38 V supply voltage range. The TLE2081ACDR differs only in packaging format (Tape & Reel) and product status (Active). This part is suitable for direct replacement in all applications currently using the TLE2081ACD. The Active product status ensures continued availability and supply chain stability.

Secondary Recommendations: AD8610ARZ, AD8610ARZ-REEL, AD8610ARZ-REEL7, AD8610BRZ

The AD8610 series (Analog Devices Inc.) represents a functional alternative with enhanced performance characteristics. These J-FET amplifiers provide higher slew rate (60 V/µs versus 45 V/µs), higher gain bandwidth product (25 MHz versus 10 MHz), and significantly lower input bias current (3 pA versus 20 pA). The AD8610 series operates across an extended temperature range (-40°C to 125°C versus 0°C to 70°C) and maintains the 8-SOIC package format. However, the supply voltage range is narrower (10 V to 26 V versus 4.5 V to 38 V), which may restrict use in applications requiring the full 4.5 V minimum or 38 V maximum supply voltage of the TLE2081ACD. The AD8610BRZ variant offers superior input offset voltage (45 µV versus 85 µV in the AD8610ARZ variants), providing enhanced precision performance. All AD8610 variants maintain Active product status.

Alternative Consideration: AD744JRZ-REEL, AD744JRZ-REEL7

The AD744 series (Analog Devices Inc.) provides J-FET amplifier functionality with enhanced slew rate (75 V/µs) and bandwidth (13 MHz). These parts are suitable for applications where higher frequency response is beneficial. However, the AD744 series exhibits higher input bias current (30 pA versus 20 pA) and narrower supply voltage range (9 V to 36 V versus 4.5 V to 38 V). These characteristics make the AD744 series less suitable as a direct replacement but acceptable for applications with compatible supply voltage requirements and where the higher input bias current does not create design constraints.

Not Recommended: AD847JRZ, AD847JRZ-REEL, AD847JRZ-REEL7

The AD847 series represents a General Purpose amplifier type rather than J-FET architecture. These parts exhibit significantly different electrical characteristics: 300 V/µs slew rate, 50 MHz bandwidth, and 3.3 µA input bias current. The AD847 series is fundamentally incompatible with applications designed for the low-input-bias-current performance of the TLE2081ACD J-FET architecture. These parts are not suitable substitutes.

Frequently Asked Questions (FAQ)

Q: Can the TLE2081ACDR be used as a direct replacement for the TLE2081ACD?

A: Yes. The TLE2081ACDR is electrically identical to the TLE2081ACD across all specified parameters. The only differences are packaging format (Tape & Reel versus tube) and product status (Active versus Last Time Buy). Direct substitution is appropriate for all applications.

Q: What is the primary difference between the TLE2081ACD and the AD8610 series?

A: The AD8610 series provides enhanced performance with higher slew rate (60 V/µs versus 45 V/µs), higher bandwidth (25 MHz versus 10 MHz), and lower input bias current (3 pA versus 20 pA). However, the AD8610 series operates within a narrower supply voltage range (10 V to 26 V versus 4.5 V to 38 V). Substitution is appropriate only for applications where the supply voltage requirements fall within the AD8610 operating range.

Q: Why is the AD847 series not recommended as a substitute?

A: The AD847 series uses General Purpose amplifier architecture rather than J-FET input architecture. This fundamental difference results in input bias current of 3.3 µA compared to 20 pA in the TLE2081ACD. Applications designed for low-input-bias-current performance will not function correctly with the AD847 series.

Q: What does "Last Time Buy" status mean for the TLE2081ACD?

A: Last Time Buy status indicates that the manufacturer has discontinued production of the TLE2081ACD. Existing inventory is limited and will not be replenished. Designers should transition to alternative parts to ensure long-term supply chain reliability.

Q: Are there packaging format differences between substitute parts?

A: Yes. Substitute parts are available in multiple packaging formats: Tube, Tape & Reel (TR), and Cut Tape with Digi-Reel (CT & Digi-Reel). All variants maintain identical electrical specifications and 8-SOIC physical package dimensions. Packaging format selection depends on assembly process requirements and order quantity.

Q: Can the AD8610 series be used in applications requiring 4.5 V minimum supply voltage?

A: No. The AD8610 series requires a minimum supply voltage of 10 V. Applications designed for 4.5 V minimum supply voltage must use the TLE2081ACDR or remain with the TLE2081ACD. The AD8610 series is not suitable for low-voltage applications.

Q: What is the significance of the extended temperature range in the AD8610 series?

A: The AD8610 series operates from -40°C to 125°C, compared to 0°C to 70°C for the TLE2081ACD. This extended range allows use in industrial and automotive applications with wider temperature requirements. However, extended temperature range does not affect substitution suitability for applications operating within the 0°C to 70°C range.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain RoHS3 compliance and Moisture Sensitivity Level 1 (Unlimited), matching the environmental and handling specifications of the TLE2081ACD.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message