OPA4374AIDRG4 Equivalent & Substitute Parts

Part Overview

The OPA4374AIDRG4 is a CMOS quad operational amplifier manufactured by Texas Instruments, featuring rail-to-rail output capability in a 14-SOIC surface mount package. This device is designed for general-purpose amplification applications requiring low power consumption and wide supply voltage range operation.

The OPA4374AIDRG4 is currently discontinued at DiGi Electronics. Equivalent and substitute parts are available from multiple manufacturers including Texas Instruments, Rohm Semiconductor, and Microchip Technology. Selection of alternative components requires verification of electrical performance parameters, package compatibility, and application-specific requirements.

Key Parameters

Parameter	Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	4	—
Output Type	Rail-to-Rail	—
Slew Rate	5	V/µs
Gain Bandwidth Product	6.5	MHz
Current - Input Bias	0.5	pA
Voltage - Input Offset	1	mV
Current - Supply (x4 Channels)	585	µA
Current - Output / Channel	5	mA
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 125	°C
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	2 (1 Year)	—

Substitute Part Grouping Explanation

Substitute parts for the OPA4374AIDRG4 are grouped based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

Amplifier Type: CMOS or General Purpose
Number of Circuits: 4 (quad configuration)
Output Type: Rail-to-Rail
Package / Case: 14-SOIC or 14-SOP (mechanically compatible)
Mounting Type: Surface Mount
Operating Temperature Range: Minimum -40°C, Maximum ≥125°C

Secondary Performance Parameters:

Slew Rate: 5 V/µs or higher
Gain Bandwidth Product: 6.5 MHz or higher
Supply Voltage Range: Minimum ≤2.7 V, Maximum ≥5.5 V
Input Bias Current: ≤0.5 pA
Input Offset Voltage: ≤1 mV

Compliance Requirements:

RoHS3 Compliant
REACH Unaffected
ECCN: EAR99

Substitute parts meeting all primary criteria and most secondary criteria are considered direct equivalents. Parts with reduced performance in secondary parameters are listed as functional alternatives for applications with less stringent requirements.

Parameter Comparison

Parameter	OPA4374AIDRG4	OPA4374AIDR	BU7244F-E2	BU7487F-E2	LMR934F-GE2	MCP6234T-E/SL	MCP6424T-E/SL	MCP6474-E/SL	MCP6494-E/SL
Manufacturer	Texas Instruments	Texas Instruments	Rohm Semiconductor	Rohm Semiconductor	Rohm Semiconductor	Microchip Technology	Microchip Technology	Microchip Technology	Microchip Technology
Amplifier Type	CMOS	CMOS	CMOS	CMOS	General Purpose	General Purpose	General Purpose	CMOS	General Purpose
Number of Circuits	4	4	4	4	4	4	4	4	4
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate (V/µs)	5	5	0.4	10	0.35	0.15	0.05	1.1	6
Gain Bandwidth Product (MHz)	6.5	6.5	0.9	10	1.4	0.3	0.09	2	7.5
Current - Input Bias (pA)	0.5	0.5	1	1	5000	1	1	1	1
Voltage - Input Offset (mV)	1	1	1	1	1	5	1	1.5	1.5
Current - Supply (µA x4 Channels)	585	585	360	6000	250	20	4.4	100	530
Current - Output / Channel (mA)	5	5	12	12	90	23	22	32	15
Voltage - Supply Span Min (V)	2.7	2.7	1.8	3	1.8	1.8	1.8	2	2.4
Voltage - Supply Span Max (V)	5.5	5.5	5.5	5.5	5	6	5.5	5.5	5.5
Operating Temperature (°C)	-40 to 125	-40 to 125	-40 to 85	-40 to 105	-40 to 85	-40 to 125	-40 to 125	-40 to 125	-40 to 125
Package / Case	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.173", 4.40mm)	14-SOIC (0.173", 4.40mm)	14-SOIC (0.173", 4.40mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Discontinued	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Equivalent (Highest Compatibility):

OPA4374AIDR is the direct equivalent to OPA4374AIDRG4. Both devices are manufactured by Texas Instruments with identical electrical specifications. The OPA4374AIDR is currently in active production status with significantly higher inventory availability (226,280 units). This part is the primary recommended substitute for applications requiring exact performance matching. The only difference is packaging format: OPA4374AIDR is supplied in Cut Tape and Digi-Reel format, while OPA4374AIDRG4 was supplied in Digi-Reel format.

Performance-Matched Alternatives (14-SOIC 3.90mm Package):

MCP6494-E/SL (Microchip Technology) provides comparable performance with slew rate of 6 V/µs and gain bandwidth product of 7.5 MHz, exceeding the OPA4374AIDRG4 specifications. Supply current is 530 µA, closely matching the original part. Operating temperature range extends to -40°C to 125°C. This part is suitable for applications requiring higher bandwidth performance within the same package footprint.

MCP6474-E/SL (Microchip Technology) offers moderate performance with slew rate of 1.1 V/µs and gain bandwidth product of 2 MHz. Supply current is 100 µA, significantly lower than the original part. This alternative is suitable for power-sensitive applications where bandwidth requirements are less stringent.

Package-Compatible Alternatives (14-SOIC 4.40mm Package):

BU7487F-E2 (Rohm Semiconductor) provides superior slew rate of 10 V/µs and gain bandwidth product of 10 MHz. However, supply current is significantly higher at 6 mA. Operating temperature range is -40°C to 105°C, which does not extend to 125°C. This part requires PCB layout verification due to different package width (4.40mm vs. 3.90mm).

BU7244F-E2 (Rohm Semiconductor) offers reduced performance with slew rate of 0.4 V/µs and gain bandwidth product of 0.9 MHz. Supply current is 360 µA. Operating temperature range is limited to -40°C to 85°C. This part is suitable only for low-speed applications and does not meet full temperature range requirements.

Low-Power Alternatives (14-SOIC 3.90mm Package):

MCP6424T-E/SL (Microchip Technology) provides ultra-low power consumption at 4.4 µA total supply current. However, slew rate is 0.05 V/µs and gain bandwidth product is 90 kHz, significantly reduced from the original specification. This part is suitable for battery-powered or ultra-low-power applications where bandwidth is not critical.

MCP6234T-E/SL (Microchip Technology) offers low power consumption at 20 µA total supply current with slew rate of 0.15 V/µs and gain bandwidth product of 0.3 MHz. Input offset voltage is 5 mV, higher than the original 1 mV specification. This part is suitable for low-power, low-bandwidth applications.

General Purpose Alternative (14-SOIC 4.40mm Package):

LMR934F-GE2 (Rohm Semiconductor) is a general-purpose amplifier with slew rate of 0.35 V/µs and gain bandwidth product of 1.4 MHz. Input bias current is 5 nA, significantly higher than the original 0.5 pA specification. Output current per channel is 90 mA, substantially higher than the original 5 mA. Operating temperature range is limited to -40°C to 85°C. This part is suitable for applications requiring higher output current capability but not meeting full temperature range or low input bias current requirements.

Compliance and Availability:

All substitute parts listed are RoHS3 compliant and REACH unaffected, meeting regulatory requirements equivalent to the original OPA4374AIDRG4. All parts are currently in active production status with adequate inventory availability. Selection should prioritize OPA4374AIDR for direct replacement, or MCP6494-E/SL for enhanced performance within the same package footprint.

Frequently Asked Questions (FAQ)

Q: Can OPA4374AIDR be used as a direct replacement for OPA4374AIDRG4?

A: Yes. OPA4374AIDR is the direct equivalent with identical electrical specifications. Both devices are CMOS quad operational amplifiers with 6.5 MHz gain bandwidth product, 5 V/µs slew rate, and -40°C to 125°C operating temperature range. The only difference is packaging format. OPA4374AIDR is supplied in Cut Tape and Digi-Reel format, while OPA4374AIDRG4 was supplied in Digi-Reel format. Both use the same 14-SOIC (0.154", 3.90mm) package.

Q: What is the difference between 14-SOIC (0.154", 3.90mm) and 14-SOIC (0.173", 4.40mm) packages?

A: The primary difference is package width. The 0.154" (3.90mm) width package is narrower than the 0.173" (4.40mm) width package. Both are 14-pin SOIC packages with identical pin pitch and height. Parts using the wider 4.40mm package (BU7244F-E2, BU7487F-E2, LMR934F-GE2) require PCB layout verification before substitution. Footprint compatibility must be confirmed with the original design specifications.

Q: Which substitute part offers the best performance match to OPA4374AIDRG4?

A: MCP6494-E/SL provides the closest performance match with slew rate of 6 V/µs (exceeding the original 5 V/µs) and gain bandwidth product of 7.5 MHz (exceeding the original 6.5 MHz). Supply current is 530 µA, closely matching the original 585 µA specification. Operating temperature range extends to -40°C to 125°C. This part uses the same 14-SOIC (0.154", 3.90mm) package, requiring no PCB layout changes.

Q: Can MCP6424T-E/SL be used in applications requiring 6.5 MHz bandwidth?

A: No. MCP6424T-E/SL has gain bandwidth product of 90 kHz, which is approximately 72 times lower than the OPA4374AIDRG4 specification of 6.5 MHz. This part is suitable only for low-bandwidth applications. Slew rate is 0.05 V/µs compared to the original 5 V/µs. This part is designed for ultra-low-power applications where bandwidth is not critical.

Q: What is the impact of using BU7487F-E2 instead of OPA4374AIDRG4?

A: BU7487F-E2 provides superior slew rate (10 V/µs vs. 5 V/µs) and gain bandwidth product (10 MHz vs. 6.5 MHz). However, supply current is significantly higher at 6 mA compared to 585 µA, representing approximately 10 times higher power consumption. Operating temperature range is -40°C to 105°C, which does not extend to 125°C. Package width is 4.40mm instead of 3.90mm, requiring PCB layout verification. This part is suitable for high-speed applications where power consumption and temperature range are not limiting factors.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (OPA4374AIDR, BU7244F-E2, BU7487F-E2, LMR934F-GE2, MCP6234T-E/SL, MCP6424T-E/SL, MCP6474-E/SL, MCP6494-E/SL) are RoHS3 compliant and REACH unaffected, meeting regulatory requirements equivalent to the original OPA4374AIDRG4.

Q: What is the difference between CMOS and General Purpose amplifier types?

A: CMOS amplifiers (OPA4374AIDRG4, OPA4374AIDR, BU7244F-E2, BU7487F-E2, MCP6474-E/SL) use complementary metal-oxide-semiconductor technology, typically offering lower input bias current and lower power consumption. General Purpose amplifiers (LMR934F-GE2, MCP6234T-E/SL, MCP6424T-E/SL, MCP6494-E/SL) use alternative topologies that may offer different performance trade-offs. For the OPA4374AIDRG4, CMOS-type substitutes are preferred to maintain input bias current specification of 0.5 pA.

Q: Can LMR934F-GE2 be used in applications requiring low input bias current?

A: No. LMR934F-GE2 has input bias current of 5 nA, which is 10,000 times higher than the OPA4374AIDRG4 specification of 0.5 pA. This part is not suitable for applications requiring precision low-bias-current performance. Additionally, operating temperature range is limited to -40°C to 85°C, not extending to 125°C.

Q: What inventory availability should be considered for production planning?

A: OPA4374AIDR has the highest inventory availability at 226,280 units. MCP6234T-E/SL has 35,300 units. MCP6424-E/SL has 18,235 units. MCP6494-E/SL has 12,700 units. MCP6424T-E/SL has 3,400 units. MCP6474-E/SL has 4,000 units. BU7244F-E2 has 5,200 units. LMR934F-GE2 has 3,301 units. BU7487F-E2 has 965 units. For high-volume production, OPA4374AIDR is the recommended choice due to superior availability.

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