TLE2161IDG4 Equivalent & Substitute Parts

Part Overview

The TLE2161IDG4 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 TLE2161IDG4 is classified as obsolete, necessitating identification of equivalent substitute components for ongoing design requirements and production continuity. Substitute parts must maintain electrical compatibility across critical performance parameters while accommodating available packaging and inventory options.

Key Parameters

Parameter	Value	Unit
Amplifier Type	J-FET	—
Number of Circuits	1	—
Slew Rate	10	V/µs
Gain Bandwidth Product	6.4	MHz
Current - Input Bias	4	pA
Voltage - Input Offset	600	µV
Current - Supply	290	µA
Current - Output / Channel	80	mA
Voltage - Supply Span (Min)	7	V
Voltage - Supply Span (Max)	36	V
Operating Temperature	-40 to 85	°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 TLE2161IDG4 are grouped based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Critical Compatibility Parameters:

Amplifier Type: J-FET input configuration
Number of Circuits: Single circuit (1)
Package / Case: 8-SOIC form factor
Mounting Type: Surface Mount
Supply Voltage Range: Minimum 7 V to Maximum 36 V
Operating Temperature Range: Must encompass or match -40°C to 85°C

Performance Parameters Defining Substitution Tier:

Slew Rate: 10 V/µs (baseline)
Gain Bandwidth Product: 6.4 MHz (baseline)
Current - Input Bias: 4 pA (baseline)
Voltage - Input Offset: 600 µV (baseline)

Substitute parts are classified into two categories:

Category 1: Direct Packaging Variants (TLE2161 Series) These are manufacturer-recommended alternatives from Texas Instruments using the same base product number (TLE2161) with identical electrical specifications but different packaging configurations (Tube vs. Tape & Reel).

Category 2: Cross-Manufacturer Alternatives (Analog Devices) These parts from Analog Devices Inc. maintain J-FET amplifier architecture and 8-SOIC packaging but exhibit variations in performance parameters. Substitution is valid when the application requirements do not mandate the exact baseline specifications of the TLE2161IDG4.

Parameter Comparison

Part Number	Manufacturer	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (µV)	Supply Current (mA)	Output Current (mA)	Temp Range (°C)	Status	Packaging
TLE2161IDG4	Texas Instruments	10	6.4	4	600	0.290	80	-40 to 85	Obsolete	8-SOIC
TLE2161IDR	Texas Instruments	10	6.4	4	600	0.290	80	-40 to 85	Last Time Buy	Tape & Reel
TLE2161ID	Texas Instruments	10	6.4	4	600	0.290	80	-40 to 85	Last Time Buy	Tube
AD711JRZ	Analog Devices	20	4.0	15	300	2.5	25	0 to 70	Active	8-SOIC
AD711JRZ-REEL	Analog Devices	20	4.0	15	300	2.5	25	0 to 70	Active	Tape & Reel
AD711JRZ-REEL7	Analog Devices	20	4.0	15	300	2.5	25	0 to 70	Active	Cut Tape & Digi-Reel
AD8510ARZ	Analog Devices	20	8.0	25	100	2.2	70	-40 to 125	Active	Tube
AD8510ARZ-REEL	Analog Devices	20	8.0	25	100	2.2	70	-40 to 125	Active	Cut Tape & Digi-Reel
AD8510ARZ-REEL7	Analog Devices	20	8.0	25	100	2.2	70	-40 to 125	Active	Cut Tape & Digi-Reel
ADA4000-1ARZ	Analog Devices	20	5.0	5	200	1.35	28	-40 to 125	Active	Tube
ADA4000-1ARZ-R7	Analog Devices	20	5.0	5	200	1.35	28	-40 to 125	Active	Cut Tape & Digi-Reel

Engineering Selection Recommendations

Tier 1: Preferred Substitutes (Identical Electrical Performance)

TLE2161IDR and TLE2161ID are manufacturer-recommended direct substitutes from Texas Instruments. Both parts maintain identical electrical specifications to the TLE2161IDG4 across all critical parameters: slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and output current. Both parts are classified as Last Time Buy status, indicating continued availability with defined end-of-life dates. Selection between these two depends solely on packaging requirements: TLE2161IDR is supplied in Tape & Reel format, while TLE2161ID is supplied in Tube format. Both are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating.

Tier 2: Cross-Manufacturer Alternatives (Performance Variations)

Analog Devices parts (AD711JRZ series and AD8510ARZ series) provide active, long-term availability alternatives. These parts maintain J-FET amplifier architecture and 8-SOIC packaging but exhibit measurable differences in electrical performance:

AD711JRZ variants exhibit higher slew rate (20 V/µs vs. 10 V/µs), lower gain bandwidth product (4 MHz vs. 6.4 MHz), higher input bias current (15 pA vs. 4 pA), and lower input offset voltage (300 µV vs. 600 µV). Operating temperature range is restricted to 0°C to 70°C. These parts are suitable for applications where extended temperature operation below 0°C is not required and where the lower input bias current specification is not critical.
AD8510ARZ variants provide the highest slew rate (20 V/µs), highest gain bandwidth product (8 MHz), and extended operating temperature range (-40°C to 125°C). Input bias current is higher (25 pA), and input offset voltage is significantly lower (100 µV). These parts are suitable for applications requiring superior frequency response, extended high-temperature operation, and lower offset voltage specifications.
ADA4000-1ARZ variants offer moderate slew rate (20 V/µs), moderate gain bandwidth product (5 MHz), and the lowest input bias current among Analog Devices alternatives (5 pA). Extended operating temperature range (-40°C to 125°C) and lowest supply current (1.35 mA) make these parts suitable for low-power, low-bias-current applications.

All Analog Devices alternatives are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of the TLE2161IDG4.

Compliance and Certification Basis:

All substitute parts listed maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity level, ensuring compatibility with standard manufacturing and storage protocols. REACH status is unaffected for all parts. ECCN classification (EAR99) and HTSUS code (8542.33.0001) are consistent across all alternatives, indicating equivalent regulatory treatment.

Frequently Asked Questions (FAQ)

Q1: Can TLE2161IDR or TLE2161ID be used as direct replacements for TLE2161IDG4?

A: Yes. TLE2161IDR and TLE2161ID are direct electrical equivalents of TLE2161IDG4. All three parts share identical specifications for slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and output current. The only differences are packaging format (Tape & Reel vs. Tube vs. the original DG4 variant) and product status. Both alternatives are available in active Last Time Buy status, ensuring continued supply during transition periods.

Q2: What are the key differences between TLE2161 variants and Analog Devices alternatives?

A: TLE2161 variants (IDG4, IDR, ID) maintain identical electrical specifications. Analog Devices alternatives (AD711JRZ, AD8510ARZ, ADA4000-1ARZ) introduce measurable performance variations. AD711JRZ has lower gain bandwidth product (4 MHz vs. 6.4 MHz) and restricted temperature range (0°C to 70°C). AD8510ARZ offers higher gain bandwidth product (8 MHz) and extended temperature range (-40°C to 125°C) but with higher input bias current (25 pA). ADA4000-1ARZ provides the lowest input bias current among Analog Devices options (5 pA) with extended temperature range. Selection depends on application-specific performance requirements.

Q3: Are all substitute parts available in 8-SOIC packaging?

A: Yes. All substitute parts listed are manufactured in 8-SOIC (0.154", 3.90mm Width) surface mount package format, maintaining mechanical and electrical compatibility with the original TLE2161IDG4 footprint. Packaging variants differ only in delivery format: Tube, Tape & Reel (TR), or Cut Tape & Digi-Reel (CT). PCB layout and reflow soldering parameters remain unchanged across all alternatives.

Q4: Which substitute part is recommended for applications requiring extended temperature operation?

A: AD8510ARZ, AD8510ARZ-REEL, AD8510ARZ-REEL7, ADA4000-1ARZ, and ADA4000-1ARZ-R7 all support operating temperature range of -40°C to 125°C, extending 40°C above the TLE2161IDG4 maximum specification of 85°C. If extended high-temperature operation is required, these parts are suitable. If extended low-temperature operation below -40°C is required, no substitute from the provided list extends below -40°C.

Q5: What is the impact of higher input bias current in Analog Devices alternatives?

A: Input bias current specifications differ across alternatives. TLE2161IDG4 specifies 4 pA; AD711JRZ specifies 15 pA; AD8510ARZ specifies 25 pA; ADA4000-1ARZ specifies 5 pA. Higher input bias current increases input offset voltage drift with temperature and reduces input impedance. Applications with high-impedance signal sources or requiring minimal input current may require circuit redesign or selection of alternatives with lower input bias current (ADA4000-1ARZ at 5 pA or TLE2161 variants at 4 pA).

Q6: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed carry ROHS3 Compliant status, meeting European Union Restriction of Hazardous Substances Directive requirements. REACH status is unaffected for all parts, and ECCN classification (EAR99) is consistent, indicating equivalent regulatory treatment for export and procurement purposes.

Q7: What packaging format should be selected for high-volume production?

A: For high-volume automated assembly, Tape & Reel (TR) or Cut Tape & Digi-Reel (CT) packaging formats are standard. TLE2161IDR (Tape & Reel), AD711JRZ-REEL, AD711JRZ-REEL7, AD8510ARZ-REEL, AD8510ARZ-REEL7, ADA4000-1ARZ-R7 are suitable for pick-and-place equipment. Tube packaging (TLE2161ID, AD711JRZ, AD8510ARZ, ADA4000-1ARZ) is appropriate for manual assembly or lower-volume applications. Inventory levels vary by packaging format; verify availability with supplier before design finalization.

Q8: Can substitute parts be mixed within a single production run?

A: Mixing substitute parts within a single production run is not recommended without comprehensive circuit validation. Although all parts maintain 8-SOIC packaging and J-FET amplifier architecture, electrical performance variations (particularly slew rate, gain bandwidth product, and input bias current) may affect circuit behavior, frequency response, and noise characteristics. If production continuity requires part substitution, complete functional testing of the substitute part in the target application circuit is required before production implementation.

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