BA4584RF-E2 Equivalent & Substitute Parts

Part Overview

The BA4584RF-E2 is a general purpose operational amplifier manufactured by Rohm Semiconductor, configured as a 4-circuit integrated circuit in a 14-SOP surface mount package. This device is actively produced and widely used in analog signal processing applications requiring moderate bandwidth and low input offset voltage characteristics.

Substitute parts are necessary when the BA4584RF-E2 becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design specifications permit operation with enhanced performance parameters. The substitute parts listed maintain functional compatibility through equivalent circuit count, package footprint compatibility, and overlapping electrical operating ranges.

Key Parameters

Parameter	BA4584RF-E2	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Slew Rate	5	V/µs
Gain Bandwidth Product	5	MHz
Current - Input Bias	100	nA
Voltage - Input Offset	300	µV
Current - Supply	11	mA
Voltage - Supply Span (Min)	4	V
Voltage - Supply Span (Max)	19	V
Operating Temperature	-40 to 105	°C
Mounting Type	Surface Mount	—
Package / Case	14-SOIC (0.173", 4.40mm Width)	—
Product Status	Active	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution compatibility for the BA4584RF-E2 is determined by the following critical parameters:

Circuit Configuration: All substitute parts maintain 4-circuit operational amplifier architecture, ensuring pin-compatible operation in existing PCB layouts.

Package Footprint: Substitute parts are available in 14-SOIC surface mount packages. The BA4584RF-E2 uses a 14-SOIC package with 4.40mm width, while most substitute parts use 14-SOIC packages with 3.90mm width. This dimensional difference requires PCB footprint verification before substitution.

Supply Voltage Range: The BA4584RF-E2 operates across 4V to 19V supply span. Substitute parts operate within 4.5V to 16V (TLC074/TLC084 series) or 4.75V to 15.5V (LMC6034 series), representing a subset of the original device's range. Applications requiring the full 19V maximum supply cannot use these substitutes.

Operating Temperature: The BA4584RF-E2 operates from -40°C to 105°C. Substitute parts are available in three temperature grades: -40°C to 125°C (TLC074IDR, TLC084AID, TLC084AIDR), 0°C to 70°C (TLC074CD, TLC074CDR, TLC084CD, TLC084CDR), and -40°C to 85°C (LMC6034 series). Temperature grade selection depends on application requirements.

Amplifier Type and Performance: The BA4584RF-E2 is classified as a general purpose amplifier. Substitute parts include both general purpose (TLC084 series) and CMOS (TLC074 series, LMC6034 series) variants. CMOS variants offer significantly lower input bias current and different slew rate characteristics.

Parameter Comparison

Parameter	BA4584RF-E2	LMC6034IM/NOPB	LMC6034IMX/NOPB	TLC074AID	TLC074CD	TLC074CDR	TLC074IDR	TLC084AID	TLC084AIDR	TLC084CD	TLC084CDR	Unit
Amplifier Type	General Purpose	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	General Purpose	General Purpose	General Purpose	General Purpose	—
Number of Circuits	4	4	4	4	4	4	4	4	4	4	4	—
Slew Rate	5	1.1	1.1	19	19	19	19	19	19	19	19	V/µs
Gain Bandwidth Product	5	1.4	1.4	10	10	10	10	10	10	10	10	MHz
Current - Input Bias	100	0.04	0.04	1.5	1.5	1.5	1.5	3	3	3	3	pA
Voltage - Input Offset	300	1000	1000	390	390	390	390	390	390	390	390	µV
Current - Supply	11	1.5 (x4)	1.5 (x4)	2.1 (x4)	2.1 (x4)	2.1 (x4)	2.1 (x4)	1.9 (x4)	1.9 (x4)	1.9 (x4)	1.9 (x4)	mA
Voltage - Supply Span (Min)	4	4.75	4.75	4.5	4.5	4.5	4.5	4.5	4.5	4.5	4.5	V
Voltage - Supply Span (Max)	19	15.5	15.5	16	16	16	16	16	16	16	16	V
Operating Temperature	-40 to 105	-40 to 85	-40 to 85	-40 to 125	0 to 70	0 to 70	-40 to 125	-40 to 125	-40 to 125	0 to 70	0 to 70	°C
Package / Case	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)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	14-SOIC (0.154", 3.90mm)	—
Product Status	Active	Obsolete	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	—

Engineering Selection Recommendations

For Direct Functional Replacement with Enhanced Performance

The TLC084AIDR and TLC084CDR are the primary substitutes for the BA4584RF-E2. Both devices maintain general purpose amplifier classification and 4-circuit configuration. The TLC084AIDR operates across -40°C to 125°C, providing extended temperature coverage beyond the BA4584RF-E2's 105°C maximum. The TLC084CDR operates across 0°C to 70°C and is suitable for commercial temperature range applications. Both are actively produced and ROHS3 compliant. The TLC084 series offers doubled slew rate (19V/µs versus 5V/µs) and doubled gain bandwidth product (10MHz versus 5MHz), enabling faster signal processing in applications where these enhanced specifications are beneficial or neutral.

For Low-Power Applications

The TLC074CDR and TLC074IDR provide CMOS amplifier architecture with significantly reduced supply current (2.1mA per 4 channels versus 11mA for the BA4584RF-E2). These devices are actively produced and ROHS3 compliant. The TLC074IDR extends operating temperature to -40°C to 125°C, while the TLC074CDR operates across 0°C to 70°C. CMOS architecture introduces lower input bias current (1.5pA versus 100nA) but higher input offset voltage (390µV versus 300µV). Supply voltage maximum is limited to 16V, restricting use in applications requiring the BA4584RF-E2's full 19V range.

For Ultra-Low Input Bias Current Applications

The LMC6034IMX/NOPB is actively produced and ROHS3 compliant, offering the lowest input bias current among substitutes (0.04pA). This CMOS device is suitable for high-impedance signal conditioning applications. Operating temperature range is -40°C to 85°C. Supply voltage maximum is 15.5V. Slew rate is reduced to 1.1V/µs and gain bandwidth product is 1.4MHz, making this substitute appropriate only for low-frequency applications.

Packaging Considerations

All substitute parts use 14-SOIC packages with 3.90mm width, compared to the BA4584RF-E2's 4.40mm width. PCB footprint compatibility must be verified before substitution. The LMC6034IM/NOPB is obsolete and should not be selected for new designs despite active inventory availability.

Supply Voltage Constraint

Applications requiring operation at the BA4584RF-E2's maximum 19V supply voltage cannot use any listed substitute parts, as all alternatives are limited to 15.5V or 16V maximum supply voltage.

Frequently Asked Questions (FAQ)

Q: Can the TLC084AIDR directly replace the BA4584RF-E2 in existing PCB layouts?

A: Pin configuration is identical for both 4-circuit 14-SOIC devices. However, the package width differs: BA4584RF-E2 uses 4.40mm width while TLC084AIDR uses 3.90mm width. PCB footprint compatibility must be verified with the PCB design files. If the PCB footprint accommodates the narrower 3.90mm package, direct substitution is electrically compatible.

Q: What is the primary difference between TLC074 and TLC084 series substitutes?

A: Both are CMOS-based 4-circuit amplifiers with identical electrical performance specifications. The TLC074 series is classified as CMOS amplifier, while the TLC084 series is classified as general purpose amplifier. For the BA4584RF-E2 replacement, the TLC084 series maintains closer functional alignment with the original general purpose amplifier classification.

Q: Why do some substitute parts have lower maximum supply voltage than the BA4584RF-E2?

A: The BA4584RF-E2 supports 4V to 19V supply span. Substitute parts are limited to 15.5V or 16V maximum supply voltage due to their internal circuit design. Applications operating at 17V, 18V, or 19V supply voltage cannot use these substitutes and require the original BA4584RF-E2 or alternative devices with equivalent supply voltage ratings.

Q: Is the LMC6034IM/NOPB suitable for new designs?

A: No. Although inventory is available, the LMC6034IM/NOPB is marked as obsolete product status. New designs should use the LMC6034IMX/NOPB, which is actively produced and offers identical electrical specifications with active product support.

Q: How do input bias current differences affect circuit design?

A: The BA4584RF-E2 has 100nA input bias current. Substitute parts range from 0.04pA (LMC6034 series) to 3pA (TLC084 series). Lower input bias current reduces errors in high-impedance circuits and precision instrumentation. Higher input bias current may require input bias current compensation networks in sensitive applications. Circuit redesign is not required for most general purpose applications.

Q: What temperature grade should be selected for industrial applications?

A: Industrial applications typically require -40°C to 125°C operating temperature range. The TLC084AID, TLC084AIDR, and TLC074IDR meet this specification. The TLC074CD, TLC074CDR, TLC084CD, and TLC084CDR are limited to 0°C to 70°C commercial temperature range and are unsuitable for industrial environments.

Q: Can the LMC6034IMX/NOPB replace the BA4584RF-E2 in high-frequency applications?

A: No. The LMC6034IMX/NOPB has gain bandwidth product of 1.4MHz compared to the BA4584RF-E2's 5MHz. Applications requiring bandwidth above 1.4MHz must use the TLC074 or TLC084 series (10MHz gain bandwidth product) or retain the original BA4584RF-E2.

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