TLE2071ACPG4 Equivalent & Substitute Parts

Part Overview

The TLE2071ACPG4 is a J-FET input operational amplifier manufactured by Texas Instruments in the Excalibur™ series. This device integrates one amplifier circuit in an 8-DIP through-hole package and is designed for applications requiring low input bias current and low input offset voltage characteristics. The TLE2071ACPG4 is currently discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design support and component procurement. Substitute parts must maintain compatibility with the 8-DIP package format and preserve critical electrical parameters within acceptable operating ranges.

Substiute Parts

TLE2071ACPG4

Texas InstrumentsIn Stock: 1216TLE2071ACPG4 Datasheet

Current PartRFQ

TLE2071ACP

Texas InstrumentsIn Stock: 6292TLE2071ACP Datasheet

MFR RecommendedRFQ

AD845JNZ

Analog Devices Inc.In Stock: 19013AD845JNZ Datasheet

MFR RecommendedRFQ

AD847JNZ

Analog Devices Inc.In Stock: 3508AD847JNZ Datasheet

MFR RecommendedRFQ

LT1008CN8#PBF

Analog Devices Inc.In Stock: 1176LT1008CN8#PBF Datasheet

MFR RecommendedRFQ

LT1122CCN8#PBF

Analog Devices Inc.In Stock: 1399LT1122CCN8#PBF Datasheet

MFR RecommendedRFQ

LT1122DCN8#PBF

Analog Devices Inc.In Stock: 1464LT1122DCN8#PBF Datasheet

MFR RecommendedRFQ

LT1354CN8#PBF

Analog Devices Inc.In Stock: 1856LT1354CN8#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLE2071ACPG4 is determined by strict adherence to the following criteria:

Primary Substitution Criteria:

• Package format: 8-DIP (0.300", 7.62mm) through-hole mounting
• Amplifier type: J-FET input configuration
• Number of circuits: Single circuit per package
• Operating temperature range: Minimum 0°C to 70°C
• Supply voltage span: Minimum 4.5 V to 38 V
• RoHS3 compliance

Secondary Electrical Parameters for Compatibility Assessment:

• Slew rate: 45 V/µs (baseline)
• Gain bandwidth product: 10 MHz (baseline)
• Input bias current: 20 pA (baseline)
• Input offset voltage: 470 µV (baseline)
• Supply current: 1.7 mA (baseline)
• Output current per channel: 48 mA (baseline)

Substitute parts are grouped into two categories: Direct Equivalents (identical electrical specifications and product status active) and Functional Alternatives (J-FET or general-purpose amplifiers with modified electrical characteristics but compatible package and supply requirements).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Recommended Primary Substitute):

The TLE2071ACP is the direct equivalent to the TLE2071ACPG4. This part maintains identical electrical specifications across all measured parameters: 45 V/µs slew rate, 10 MHz gain bandwidth product, 20 pA input bias current, and 470 µV input offset voltage. The TLE2071ACP is manufactured by Texas Instruments in the same Excalibur™ series and is currently active in production. Both parts operate within the 4.5 V to 38 V supply range and are rated for 0°C to 70°C operation. The TLE2071ACP is packaged in 8-PDIP format with tube packaging and maintains ROHS3 compliance. This substitute provides drop-in compatibility with no circuit redesign required.

J-FET Alternative Substitutes:

The AD845JNZ (Analog Devices Inc.) is a J-FET input amplifier with enhanced performance characteristics. It provides 100 V/µs slew rate and 16 MHz gain bandwidth product, representing improvements over the baseline TLE2071ACPG4. However, the AD845JNZ exhibits higher input bias current (750 pA) and higher input offset voltage (700 µV), along with increased supply current (10 mA). The minimum supply voltage requirement is 9.5 V, which exceeds the TLE2071ACPG4 minimum of 4.5 V. This part is suitable for applications where higher slew rate and bandwidth are beneficial and where the higher bias current and offset voltage are acceptable.

The LT1122CCN8#PBF and LT1122DCN8#PBF (Analog Devices Inc.) are J-FET input amplifiers with 75 V/µs slew rate and 13 MHz gain bandwidth product. These parts feature superior input bias current (12 pA) and input offset voltage (130 µV) compared to the TLE2071ACPG4. Both variants require minimum 10 V supply voltage and operate across -40°C to 85°C temperature range, providing extended temperature capability. Supply current is 7.8 mA. These parts are suitable for precision applications where lower input offset voltage is required and where the higher minimum supply voltage is accommodated in the circuit design.

General Purpose and Voltage Feedback Alternatives:

The AD847JNZ (Analog Devices Inc.) is a general-purpose amplifier with significantly higher performance: 300 V/µs slew rate and 50 MHz gain bandwidth product. This part is suitable for high-speed applications but exhibits substantially higher input bias current (3.3 µA) and requires minimum 9 V supply voltage. Use this substitute only when high-speed operation is a primary design requirement.

The LT1008CN8#PBF (Analog Devices Inc.) is a general-purpose amplifier optimized for low supply current (0.38 mA) and low input offset voltage (30 µV). However, it provides only 0.2 V/µs slew rate and operates with minimum 4 V supply voltage. This part is suitable for ultra-low-power applications where speed is not critical.

The LT1354CN8#PBF (Analog Devices Inc.) is a voltage feedback amplifier with 400 V/µs slew rate and 12 MHz gain bandwidth product. It features low supply current (1 mA) and operates within 5 V to 30 V supply range. This part is suitable for high-speed, low-power applications but has a reduced maximum supply voltage (30 V) compared to the TLE2071ACPG4 (38 V).

All substitute parts maintain 8-DIP through-hole package format, ROHS3 compliance, and 0°C to 70°C operating temperature range (except LT1122 variants with extended range).

Frequently Asked Questions (FAQ)

Q1: Can the TLE2071ACP be used as a direct replacement for the TLE2071ACPG4?

A: Yes. The TLE2071ACP is a direct equivalent with identical electrical specifications and is the recommended substitute. Both parts are J-FET input amplifiers from Texas Instruments with 45 V/µs slew rate, 10 MHz gain bandwidth product, 20 pA input bias current, and 470 µV input offset voltage. The primary difference is product status: TLE2071ACPG4 is discontinued while TLE2071ACP is active. No circuit modifications are required.

Q2: What is the key difference between J-FET and general-purpose amplifier substitutes?

A: J-FET input amplifiers (TLE2071ACP, AD845JNZ, LT1122CCN8#PBF, LT1122DCN8#PBF) feature extremely low input bias current (12–750 pA range) and are optimized for high-impedance signal sources. General-purpose amplifiers (AD847JNZ, LT1008CN8#PBF) have higher input bias current (3.3 µA to 30 pA) but may offer other performance advantages such as higher slew rate or lower supply current. Select J-FET substitutes when input bias current must remain minimal.

Q3: Are all substitute parts compatible with the same PCB layout and socket?

A: Yes. All substitute parts listed use the 8-DIP (0.300", 7.62mm) through-hole package format with identical pin spacing and mounting requirements. PCB layout and socket compatibility are maintained across all substitutes. However, verify that circuit supply voltage requirements are met, as some substitutes require higher minimum supply voltages (e.g., AD845JNZ requires 9.5 V minimum, LT1122 variants require 10 V minimum).

Q4: Which substitute is best for low-power applications?

A: The LT1008CN8#PBF offers the lowest supply current at 0.38 mA, making it optimal for battery-powered or ultra-low-power designs. However, it provides only 0.2 V/µs slew rate, limiting its use to low-frequency applications. For moderate power reduction with maintained speed, the LT1354CN8#PBF provides 1 mA supply current with 400 V/µs slew rate.

Q5: What is the impact of higher input bias current in substitute parts?

A: Higher input bias current increases DC offset errors in high-impedance circuits. The TLE2071ACPG4 baseline is 20 pA. The AD845JNZ (750 pA) and AD847JNZ (3.3 µA) have significantly higher bias currents. For applications with source impedances exceeding 1 MΩ, use J-FET substitutes with bias current ≤ 750 pA. For source impedances below 100 kΩ, general-purpose substitutes are acceptable.

Q6: Can LT1122 variants be used in 0°C to 70°C applications?

A: Yes. Although LT1122CCN8#PBF and LT1122DCN8#PBF are rated for -40°C to 85°C operation, they are fully functional within the 0°C to 70°C range of the TLE2071ACPG4. The extended temperature rating provides additional design margin but is not required for standard commercial temperature applications.

Q7: What supply voltage considerations apply when selecting substitutes?

A: The TLE2071ACPG4 operates from 4.5 V to 38 V. Verify substitute minimum and maximum supply voltages: AD845JNZ requires 9.5 V minimum, LT1122 variants require 10 V minimum, while LT1008CN8#PBF operates from 4 V minimum. LT1354CN8#PBF has a reduced maximum of 30 V. Ensure circuit supply voltage falls within the substitute's specified range.

Q8: Are all substitutes RoHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant, matching the compliance status of the TLE2071ACPG4. All parts are also REACH unaffected and carry EAR99 ECCN classification.