OPA4348AIPWRG4 Equivalent & Substitute Parts

Part Overview

The OPA4348AIPWRG4 is a CMOS quad operational amplifier manufactured by Texas Instruments, housed in a 14-TSSOP surface mount package. This device features rail-to-rail output capability and is designed for general-purpose signal conditioning and amplification applications requiring low power consumption and wide supply voltage range operation.

The OPA4348AIPWRG4 is currently discontinued at DiGi Electronics. Equivalent and substitute parts are available from multiple manufacturers, offering comparable or enhanced electrical performance while maintaining mechanical compatibility with the original 14-TSSOP package footprint.

Key Parameters

Parameter	Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	4	—
Output Type	Rail-to-Rail	—
Slew Rate	0.5	V/µs
Gain Bandwidth Product	1	MHz
Current - Input Bias	0.5	pA
Voltage - Input Offset	1	mV
Current - Supply (x4 Channels)	45	µA
Current - Output / Channel	10	mA
Voltage - Supply Span (Min)	2.1	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 125	°C
Package / Case	14-TSSOP (0.173", 4.40mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	2 (1 Year)	—

Substitute Part Grouping Explanation

Substitute parts for the OPA4348AIPWRG4 are selected based on strict electrical and mechanical compatibility criteria. All substitute devices must meet the following requirements:

Mandatory Compatibility Parameters:

Four operational amplifier circuits in a single package
Rail-to-rail output configuration
14-TSSOP surface mount package (0.173", 4.40mm Width)
Operating temperature range of -40°C to 125°C
Supply voltage range spanning 2.1 V minimum to 5.5 V maximum
RoHS3 compliance

Electrical Performance Considerations: Substitute parts are grouped into two categories based on performance characteristics relative to the OPA4348AIPWRG4:

Direct Equivalents – Parts with matching or nearly identical slew rate (0.4–0.5 V/µs), gain bandwidth product (1–1.2 MHz), and supply current specifications (45–48 µA per channel). These parts provide direct functional replacement with minimal circuit redesign.
Enhanced Performance Alternatives – Parts with superior slew rate, gain bandwidth product, or output current capability. These parts are suitable for applications requiring higher performance margins or faster signal processing, provided the circuit design accommodates the enhanced specifications.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Supply Current (µA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package	Product Status
OPA4348AIPWRG4	Texas Instruments	CMOS	0.5	1	0.5	45	10	2.1	5.5	-40 to 125	14-TSSOP	Discontinued
OPA4348AIPWR	Texas Instruments	CMOS	0.5	1	0.5	45	10	2.1	5.5	-40 to 125	14-TSSOP	Active
NCS20084DTBR2G	onsemi	General Purpose	0.4	1.2	1	48	15	1.8	5.5	-40 to 125	14-TSSOP	Active
AD8544ARUZ	Analog Devices Inc.	General Purpose	0.92	1	4	45	30	2.7	5.5	-40 to 125	14-TSSOP	Active
AD8544ARUZ-REEL	Analog Devices Inc.	General Purpose	0.92	1	4	45	30	2.7	5.5	-40 to 125	14-TSSOP	Active
AD8648ARUZ	Analog Devices Inc.	General Purpose	11	24	0.3	1500	120	2.7	5.5	-40 to 125	14-TSSOP	Active
AD8648ARUZ-REEL	Analog Devices Inc.	General Purpose	11	24	0.3	1500	120	2.7	5.5	-40 to 125	14-TSSOP	Active
BU7487FV-E2	Rohm Semiconductor	CMOS	10	10	1	6000	12	3	5.5	-40 to 105	14-LSSOP	Active
ISL28413FVZ	Renesas Electronics Corporation	General Purpose	1	2	3	90	22	1.8	5.5	-40 to 125	14-TSSOP	Active
LMR824FVJ-E2	Rohm Semiconductor	General Purpose	2	5.5	40000	1130	45	2.5	5.5	-40 to 85	14-TSSOP	Active
LMV324DTBR2G	onsemi	Voltage Feedback	1	1	1000	100	160	2.7	5.5	-40 to 85	14-TSSOP	Active

Engineering Selection Recommendations

Primary Recommendation: OPA4348AIPWR

The OPA4348AIPWR is the direct active equivalent of the discontinued OPA4348AIPWRG4. Both devices are manufactured by Texas Instruments and share identical electrical specifications, including slew rate, gain bandwidth product, supply current, and output current. The OPA4348AIPWR is available in active production status with significantly higher inventory levels (75,100 units). This part requires no circuit redesign and provides pin-for-pin compatibility. Both devices are RoHS3 compliant and operate across the full -40°C to 125°C temperature range.

Secondary Recommendation: NCS20084DTBR2G

The NCS20084DTBR2G, manufactured by onsemi, provides functional equivalence with enhanced output current capability (15 mA versus 10 mA per channel). This device meets all mandatory compatibility parameters and operates across the extended supply voltage range (1.8 V to 5.5 V minimum). The NCS20084DTBR2G carries AEC-Q100 automotive qualification and is RoHS3 compliant. The device is suitable for applications requiring higher output drive capability or extended low-voltage operation.

Tertiary Recommendation: ISL28413FVZ

The ISL28413FVZ, manufactured by Renesas Electronics Corporation, offers functional compatibility with improved gain bandwidth product (2 MHz versus 1 MHz) and extended low-voltage operation (1.8 V minimum). This device is RoHS3 compliant and operates across the full -40°C to 125°C temperature range. The ISL28413FVZ is appropriate for applications requiring higher bandwidth performance within the same power envelope.

Enhanced Performance Alternatives: AD8648ARUZ / AD8648ARUZ-REEL

The AD8648ARUZ and AD8648ARUZ-REEL devices, manufactured by Analog Devices Inc., provide significantly enhanced performance with 11 V/µs slew rate and 24 MHz gain bandwidth product. These devices are suitable for high-speed signal processing applications. However, the substantially higher supply current (1.5 mA per channel versus 45 µA) and output current (120 mA versus 10 mA) require circuit design verification to ensure power supply and thermal management compatibility.

Compliance and Certification:

All recommended substitute parts are RoHS3 compliant and REACH unaffected. The NCS20084DTBR2G carries AEC-Q100 automotive qualification for applications requiring automotive-grade reliability. All parts maintain the 14-TSSOP surface mount package footprint and are compatible with existing PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can the OPA4348AIPWR be used as a direct replacement for the OPA4348AIPWRG4?

A: Yes. The OPA4348AIPWR is the active production equivalent of the discontinued OPA4348AIPWRG4. Both devices share identical electrical specifications, package configuration, and operating temperature range. No circuit modifications are required for substitution.

Q: What is the primary difference between the OPA4348AIPWR and the NCS20084DTBR2G?

A: The primary differences are manufacturer (Texas Instruments versus onsemi) and output current capability. The NCS20084DTBR2G provides 15 mA per channel output current compared to 10 mA for the OPA4348AIPWR. The NCS20084DTBR2G also supports extended low-voltage operation (1.8 V minimum) and carries AEC-Q100 automotive qualification.

Q: Are the AD8648ARUZ devices suitable for direct replacement of the OPA4348AIPWRG4?

A: The AD8648ARUZ devices are mechanically compatible (14-TSSOP package) and electrically compatible (rail-to-rail output, four circuits, -40°C to 125°C operation). However, the substantially higher supply current (1.5 mA per channel versus 45 µA) and output current (120 mA versus 10 mA) require verification of power supply capacity and thermal design. These devices are appropriate for applications requiring high-speed signal processing (24 MHz bandwidth versus 1 MHz).

Q: What is the significance of the 14-TSSOP package specification?

A: The 14-TSSOP package is a thin shrink small outline package with 0.173-inch width and 4.40 mm body width. All substitute parts listed maintain this package footprint, ensuring mechanical compatibility with existing PCB layouts and assembly processes. The BU7487FV-E2 uses a 14-LSSOP variant, which maintains the same footprint dimensions.

Q: Does the BU7487FV-E2 provide equivalent performance to the OPA4348AIPWRG4?

A: The BU7487FV-E2 is mechanically compatible (14-LSSOP package) and provides enhanced performance (10 V/µs slew rate, 10 MHz bandwidth). However, the minimum supply voltage is 3 V (versus 2.1 V for the OPA4348AIPWRG4), and the operating temperature range is limited to -40°C to 105°C. The BU7487FV-E2 is suitable for applications not requiring extended low-voltage or high-temperature operation.

Q: What is the difference between AD8544ARUZ and AD8544ARUZ-REEL packaging?

A: Both devices are electrically identical. The AD8544ARUZ is supplied in tube packaging, while the AD8544ARUZ-REEL is supplied in cut tape and Digi-Reel format. Selection depends on assembly process requirements and inventory management preferences. Both are RoHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Q: Can the LMR824FVJ-E2 be used in applications requiring -40°C to 125°C operation?

A: No. The LMR824FVJ-E2 operating temperature range is limited to -40°C to 85°C, which does not cover the full -40°C to 125°C range of the OPA4348AIPWRG4. This device is suitable only for applications with maximum operating temperature of 85°C.

Q: What is the significance of the ISL28413FVZ moisture sensitivity level (MSL 2)?

A: The ISL28413FVZ has MSL 2 (1 Year) rating, identical to the OPA4348AIPWRG4. This indicates the device requires storage in controlled humidity conditions and has a one-year shelf life from the date of manufacture. Proper moisture control during storage and handling is required to maintain device reliability.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this reference are RoHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for electronic component manufacturing and use.

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