ISL55004IBZ Equivalent & Substitute Parts

Part Overview

The ISL55004IBZ is a voltage feedback operational amplifier manufactured by Renesas Electronics Corporation, configured as a 4-circuit integrated circuit in a 14-SOIC surface mount package. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and production requirements. The ISL55004IBZ operates across a wide supply voltage range of 4.5V to 30V with a slew rate of 300V/µs and gain bandwidth product of 70 MHz, making it suitable for high-speed signal conditioning applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	ISL55004IBZ
Manufacturer	Renesas Electronics Corporation
Category	Linear, Amplifiers
Amplifier Type	Voltage Feedback
Number of Circuits	4
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Slew Rate	300V/µs
Gain Bandwidth Product	70 MHz
-3dB Bandwidth	200 MHz
Current - Input Bias	600 nA
Voltage - Input Offset	1.2 mV
Current - Supply	8.5mA (x4 Channels)
Current - Output / Channel	140 mA
Voltage - Supply Span (Min)	4.5 V
Voltage - Supply Span (Max)	30 V
Operating Temperature	-40°C ~ 85°C
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution of the ISL55004IBZ is determined by compatibility across the following critical parameters:

Package Compatibility: All substitute parts must utilize the 14-SOIC surface mount package with identical 0.154" (3.90mm) width to ensure direct PCB footprint compatibility without layout modifications.

Circuit Configuration: All substitute parts must provide 4 operational amplifier circuits within a single integrated circuit to maintain functional equivalence.

Supply Voltage Range: Substitute parts must support the minimum 4.5V supply voltage requirement. The ISL55004IBZ operates to 30V maximum; substitute parts with extended maximum supply voltage (up to 36V) remain compatible for applications within the 4.5V to 30V operating window.

Operating Temperature Range: All substitute parts must support the -40°C to 85°C operating temperature specification.

Compliance Standards: All substitute parts must maintain ROHS3 compliance and equivalent moisture sensitivity level (MSL 3) to ensure manufacturing process compatibility.

The substitute parts identified (OPA4137U, OPA4137U/2K5, OPA4137UA, OPA4137UA/2K5) share identical package, circuit count, supply voltage minimum, and operating temperature specifications. These parts differ in amplifier topology (J-FET versus voltage feedback) and performance characteristics (slew rate, gain bandwidth product, input bias current), which represent functional trade-offs rather than incompatibilities for most applications.

Parameter Comparison

Parameter	ISL55004IBZ	OPA4137U	OPA4137U/2K5	OPA4137UA	OPA4137UA/2K5
Manufacturer	Renesas Electronics	Texas Instruments	Texas Instruments	Burr Brown	Texas Instruments
Amplifier Type	Voltage Feedback	J-FET	J-FET	J-FET	J-FET
Number of Circuits	4	4	4	4	4
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Slew Rate	300V/µs	3.5V/µs	3.5V/µs	3.5V/µs	3.5V/µs
Gain Bandwidth Product	70 MHz	1 MHz	1 MHz	1 MHz	1 MHz
Current - Input Bias	600 nA	5 pA	5 pA	5 pA	5 pA
Voltage - Input Offset	1.2 mV	1.5 mV	1.5 mV	1.5 mV	1.5 mV
Current - Supply	8.5mA (x4)	220µA	220µA	220µA	220µA
Current - Output / Channel	140 mA	60 mA	60 mA	60 mA	60 mA
Voltage - Supply Span (Min)	4.5 V	4.5 V	4.5 V	4.5 V	4.5 V
Voltage - Supply Span (Max)	30 V	36 V	36 V	36 V	36 V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Product Status	Obsolete	Last Time Buy	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	Not Specified	ROHS3 Compliant
Moisture Sensitivity Level	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)	Not Specified	3 (168 Hours)

Engineering Selection Recommendations

OPA4137U/2K5 (Recommended Primary Substitute)

The OPA4137U/2K5 is the preferred substitute for the ISL55004IBZ. This part maintains active product status with the highest inventory availability (9410 units), ensuring long-term supply continuity. The device is supplied in Tape & Reel packaging, standard for high-volume manufacturing environments. ROHS3 compliance and MSL 3 rating align with the original component specifications. The extended maximum supply voltage (36V) provides operational margin within the ISL55004IBZ's 30V maximum specification.

OPA4137UA/2K5 (Secondary Substitute)

The OPA4137UA/2K5 offers the highest inventory availability (12238 units) and active product status. Supplied by Texas Instruments in Cut Tape and Digi-Reel packaging, this variant maintains identical electrical specifications to OPA4137U/2K5. ROHS3 compliance and MSL 3 rating ensure manufacturing compatibility.

OPA4137UA (Tertiary Substitute)

The OPA4137UA, manufactured by Burr Brown (Texas Instruments subsidiary), maintains active product status with 1880 units in inventory. Supplied in bulk packaging, this variant is suitable for applications where tape and reel packaging is not required. Moisture sensitivity level and RoHS compliance information is not specified for this variant.

OPA4137U (Last Time Buy Status)

The OPA4137U carries Last Time Buy status with 2295 units available. This variant is suitable only for applications where immediate substitution is required and long-term supply is not critical. Tube packaging indicates suitability for lower-volume or prototype applications.

Performance Trade-offs

All OPA4137 variants exhibit significantly lower slew rate (3.5V/µs versus 300V/µs) and gain bandwidth product (1 MHz versus 70 MHz) compared to the ISL55004IBZ. These performance reductions are inherent to J-FET amplifier topology and must be evaluated against specific application requirements. The OPA4137 series provides superior input bias current characteristics (5 pA versus 600 nA), beneficial for high-impedance signal conditioning applications.

Frequently Asked Questions (FAQ)

Q: Can the OPA4137 series directly replace the ISL55004IBZ without PCB modifications?

A: Yes. All OPA4137 variants utilize the identical 14-SOIC package with 0.154" (3.90mm) width, enabling direct footprint compatibility. No PCB layout changes are required for package substitution.

Q: What are the primary electrical differences between the ISL55004IBZ and OPA4137 substitutes?

A: The ISL55004IBZ employs voltage feedback amplifier topology with 300V/µs slew rate and 70 MHz gain bandwidth product. The OPA4137 series uses J-FET input topology with 3.5V/µs slew rate and 1 MHz gain bandwidth product. The OPA4137 provides superior input bias current (5 pA versus 600 nA). These differences represent fundamental topology trade-offs rather than package or pinout incompatibilities.

Q: Which OPA4137 variant should be selected for new production designs?

A: OPA4137U/2K5 is the recommended selection for new production designs. This variant maintains active product status, highest inventory availability, standard Tape & Reel packaging for manufacturing automation, and full ROHS3 and MSL 3 compliance.

Q: Are all OPA4137 variants ROHS3 compliant?

A: OPA4137U, OPA4137U/2K5, and OPA4137UA/2K5 are confirmed ROHS3 compliant. OPA4137UA compliance status is not specified in available documentation.

Q: What is the significance of the /2K5 suffix in part numbers?

A: The /2K5 suffix indicates packaging configuration (Cut Tape and Digi-Reel) and is not indicative of electrical specification differences. OPA4137U and OPA4137U/2K5 share identical electrical characteristics; the suffix distinguishes packaging and supply format only.

Q: Can the OPA4137 series operate across the full 4.5V to 30V supply range of the ISL55004IBZ?

A: Yes. All OPA4137 variants support 4.5V minimum supply voltage and 36V maximum supply voltage, encompassing the ISL55004IBZ operating range of 4.5V to 30V. The extended maximum rating provides operational margin.

Q: What is the inventory status for each substitute part?

A: OPA4137UA/2K5 has the highest availability (12238 units), followed by OPA4137U/2K5 (9410 units), OPA4137U (2295 units), and OPA4137UA (1880 units). All variants are currently in stock.

Q: Are there packaging format differences between OPA4137 variants?

A: Yes. OPA4137U is supplied in Tube packaging; OPA4137U/2K5 in Tape & Reel; OPA4137UA in Bulk; and OPA4137UA/2K5 in Cut Tape and Digi-Reel. Packaging selection depends on manufacturing process requirements and order quantities.

Q: What is the operating temperature range for all substitute parts?

A: All OPA4137 variants operate across -40°C to 85°C, matching the ISL55004IBZ specification.

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