TL034CPW Equivalent & Substitute Parts

Part Overview

The TL034CPW is a J-FET input operational amplifier containing four independent circuits in a 14-TSSOP surface mount package, manufactured by Texas Instruments. This device is classified as Last Time Buy, indicating discontinued production with limited inventory availability. The TL034CPW operates across a supply voltage range of 10V to 30V with a slew rate of 5.1V/µs and gain bandwidth product of 1.1 MHz, making it suitable for precision analog signal processing applications requiring low input bias current and low input offset voltage characteristics.

Equivalent and substitute parts are necessary due to the Last Time Buy status of the TL034CPW. Identifying compatible alternatives ensures design continuity and long-term supply chain reliability for applications currently utilizing this component.

Key Parameters

Parameter	TL034CPW Value	Unit
Amplifier Type	J-FET	—
Number of Circuits	4	—
Slew Rate	5.1	V/µs
Gain Bandwidth Product	1.1	MHz
Current - Input Bias	2	pA
Voltage - Input Offset	790	µV
Current - Supply (x4 Channels)	870	µA
Current - Output / Channel	40	mA
Voltage - Supply Span (Min)	10	V
Voltage - Supply Span (Max)	30	V
Operating Temperature	0 to 70	°C
Package / Case	14-TSSOP (0.173", 4.40mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the TL034CPW are categorized based on compatibility with the following critical parameters: package type (14-TSSOP surface mount), number of circuits (4), supply voltage range (minimum 10V to maximum 30V), and output current capability (40 mA per channel). The substitution logic distinguishes between two primary groups:

Group 1: J-FET Amplifier Substitutes — Parts maintaining J-FET input architecture with comparable electrical characteristics. These substitutes preserve the ultra-low input bias current (2 pA) and low input offset voltage (790 µV) performance of the original TL034CPW. Substitutes in this group include the TL034CPWR (Texas Instruments, Tape & Reel packaging) and ADA4062-4ARUZ variants (Analog Devices Inc., J-FET architecture with extended operating temperature range).

Group 2: General Purpose Amplifier Substitutes — Parts with general purpose amplifier architecture offering compatible package, circuit count, and supply voltage specifications. These substitutes differ in input bias current (400 pA to 20 nA), input offset voltage (15 µV to 2 mV), and slew rate characteristics. This group includes ADA4077-4ARUZ variants (Analog Devices Inc.), LM224APT (STMicroelectronics), LM2902AT14-13 (Diodes Incorporated), LM2902AWYPT (STMicroelectronics), and LM324ADTBR2G (onsemi).

All substitute parts comply with ROHS3 and maintain the 14-TSSOP package footprint, enabling direct PCB layout compatibility.

Parameter Comparison

Parameter	TL034CPW	TL034CPWR	ADA4062-4ARUZ	ADA4062-4ARUZ-RL	ADA4077-4ARUZ	ADA4077-4ARUZ-R7	ADA4077-4ARUZ-RL	LM224APT	LM2902AT14-13	LM2902AWYPT	LM324ADTBR2G
Manufacturer	Texas Instruments	Texas Instruments	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	STMicroelectronics	Diodes Incorporated	STMicroelectronics	onsemi
Amplifier Type	J-FET	J-FET	J-FET	J-FET	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Number of Circuits	4	4	4	4	4	4	4	4	4	4	4
Slew Rate (V/µs)	5.1	5.1	3.3	3.3	1.2	1.2	1.2	0.4	0.3	0.4	—
Gain Bandwidth Product (MHz)	1.1	1.1	1.4	1.4	3.6	3.6	3.6	1.3	0.7	1.3	1.0
Current - Input Bias (pA)	2	2	2	2	400	400	400	20000	20000	20000	40000
Voltage - Input Offset (µV)	790	790	750	750	15	15	15	2000	1000	2000	2000
Current - Supply (µA, x4 Channels)	870	870	165	165	400	400	400	1500	700	1500	1500
Current - Output / Channel (mA)	40	40	20	20	10	10	10	40	40	40	40
Voltage - Supply Span Min (V)	10	10	10	10	5	5	5	3	3	3	3
Voltage - Supply Span Max (V)	30	30	30	30	30	30	30	30	36	30	32
Operating Temperature (°C)	0 to 70	0 to 70	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 105	-40 to 125	-40 to 125	0 to 70
Package / Case	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Last Time Buy	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	3 (168 Hours)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitute: TL034CPWR

The TL034CPWR is the direct equivalent to the TL034CPW, manufactured by Texas Instruments with identical electrical specifications and J-FET amplifier architecture. The only difference is packaging format: TL034CPWR is supplied in Tape & Reel (TR) format versus the Tube packaging of the TL034CPW. Both parts maintain Active product status, ROHS3 compliance, and MSL 1 rating. This substitute is recommended for applications requiring exact performance matching with no design modifications.

Secondary Substitutes: ADA4062-4ARUZ and ADA4062-4ARUZ-RL

The ADA4062-4ARUZ variants from Analog Devices Inc. maintain J-FET input architecture with comparable input bias current (2 pA) and low input offset voltage (750 µV). These parts offer extended operating temperature range (-40°C to 125°C) compared to the TL034CPW (0°C to 70°C). The ADA4062 series exhibits lower supply current (165 µA versus 870 µA) and reduced output current per channel (20 mA versus 40 mA). These substitutes are suitable for applications where lower power consumption is beneficial and output current requirements do not exceed 20 mA per channel. Both variants maintain ROHS3 compliance and MSL 1 rating.

Tertiary Substitutes: ADA4077-4ARUZ, ADA4077-4ARUZ-R7, and ADA4077-4ARUZ-RL

The ADA4077-4ARUZ series from Analog Devices Inc. represents general purpose amplifier architecture with higher gain bandwidth product (3.6 MHz versus 1.1 MHz) and lower input offset voltage (15 µV versus 790 µV). These parts support extended operating temperature range (-40°C to 125°C) and lower minimum supply voltage (5V versus 10V). Input bias current is significantly higher (400 pA versus 2 pA), which may impact precision analog applications. Output current per channel is reduced to 10 mA. These substitutes are suitable for applications where higher bandwidth and lower offset voltage are advantageous and input bias current specifications are less critical. All variants maintain ROHS3 compliance and MSL 1 rating.

Alternative Substitutes: LM224APT, LM2902AT14-13, LM2902AWYPT, and LM324ADTBR2G

These general purpose amplifier alternatives offer compatibility with the 14-TSSOP package and four-circuit configuration. The LM224APT and LM2902AWYPT provide 40 mA output current per channel matching the TL034CPW. The LM2902AT14-13 supports extended supply voltage range (3V to 36V) and extended operating temperature (-40°C to 125°C). The LM324ADTBR2G maintains the 0°C to 70°C operating temperature range of the TL034CPW. All alternatives feature significantly higher input bias current (20 nA to 40 nA) and higher input offset voltage (1 mV to 2 mV) compared to the TL034CPW. These substitutes are appropriate for general signal processing applications where precision input characteristics are not critical. The LM2902AWYPT includes automotive qualification (AEC-Q100) for applications requiring automotive-grade components.

Frequently Asked Questions (FAQ)

Q: Can the TL034CPWR be used as a direct replacement for the TL034CPW?

A: Yes. The TL034CPWR is electrically identical to the TL034CPW with all specifications matching exactly. The only difference is packaging format: TL034CPWR uses Tape & Reel (TR) packaging while TL034CPW uses Tube packaging. Both are suitable for surface mount assembly on 14-TSSOP footprints. No circuit modifications are required.

Q: What is the primary difference between J-FET and general purpose amplifier substitutes?

A: J-FET amplifiers (TL034CPW, TL034CPWR, ADA4062-4ARUZ series) feature ultra-low input bias current (2 pA) and are optimized for high-impedance signal sources. General purpose amplifiers (ADA4077-4ARUZ series, LM224APT, LM2902 series, LM324ADTBR2G) have higher input bias current (400 pA to 40 nA) but offer different performance characteristics such as higher bandwidth or lower input offset voltage. Selection depends on application requirements for input impedance and signal source characteristics.

Q: Are all substitute parts compatible with the same PCB layout as the TL034CPW?

A: Yes. All substitute parts listed use the 14-TSSOP (0.173", 4.40mm Width) surface mount package. PCB footprints are identical, enabling direct component substitution without layout modifications. Pin assignments and package dimensions are standardized across all listed alternatives.

Q: What is the significance of the Last Time Buy status for the TL034CPW?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of the TL034CPW. Current inventory is limited (1900 pieces noted as in stock). Once inventory is exhausted, the part will no longer be available. Identifying and qualifying substitute parts ensures design continuity and supply chain reliability for new production runs and long-term product support.

Q: How do supply voltage requirements differ among substitutes?

A: The TL034CPW requires a minimum supply voltage of 10V. Several substitutes support lower minimum supply voltages: ADA4077-4ARUZ series (5V minimum), LM224APT (3V minimum), LM2902AT14-13 (3V minimum), LM2902AWYPT (3V minimum), and LM324ADTBR2G (3V minimum). Applications operating at supply voltages below 10V require selection from the lower-voltage alternatives. Maximum supply voltage is 30V to 36V across all substitutes, compatible with the TL034CPW maximum of 30V.

Q: Which substitute offers the lowest power consumption?

A: The ADA4062-4ARUZ and ADA4062-4ARUZ-RL variants offer the lowest supply current at 165 µA (x4 channels), compared to 870 µA for the TL034CPW. This represents an 81% reduction in power consumption. These substitutes maintain J-FET input architecture and are suitable for battery-powered or power-constrained applications.

Q: What is the impact of different slew rates on circuit performance?

A: Slew rate determines the maximum rate of voltage change at the amplifier output. The TL034CPW has a slew rate of 5.1 V/µs. Substitutes with lower slew rates (ADA4077 series at 1.2 V/µs, LM224APT at 0.4 V/µs, LM2902AT14-13 at 0.3 V/µs) may limit performance in high-frequency or fast-transient applications. Substitutes with comparable or higher slew rates (ADA4062 series at 3.3 V/µs) are suitable for applications requiring fast signal processing.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant, meeting environmental and hazardous substance restrictions. All parts also maintain Moisture Sensitivity Level 1 (unlimited) or Level 3 (168 hours), with most at Level 1, indicating minimal moisture sensitivity during storage and handling.

Q: Which substitute is recommended for automotive applications?

A: The LM2902AWYPT from STMicroelectronics includes automotive qualification (AEC-Q100 grade) and is specifically designed for automotive applications. This part maintains general purpose amplifier architecture with 40 mA output current per channel and extended operating temperature range (-40°C to 125°C). It is suitable for automotive signal processing circuits requiring qualified components.

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