EL5261ISZ Equivalent & Substitute Parts

Part Overview

The EL5261ISZ is a current feedback amplifier manufactured by Renesas Electronics Corporation, configured as a dual-channel operational amplifier in an 8-SOIC surface mount package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The EL5261ISZ delivers a slew rate of 1700V/µs and -3dB bandwidth of 200 MHz, suitable for applications requiring moderate-speed signal conditioning and amplification.

Key Parameters

Parameter	Value
Amplifier Type	Current Feedback
Number of Circuits	2
Slew Rate	1700V/µs
-3dB Bandwidth	200 MHz
Current - Input Bias	5 µA
Voltage - Input Offset	1.6 mV
Current - Supply	750µA (x2 Channels)
Current - Output / Channel	70 mA
Voltage - Supply Span (Min)	5 V
Voltage - Supply Span (Max)	10 V
Operating Temperature	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the EL5261ISZ is determined by the following critical parameters:

Primary Substitution Criteria:

Amplifier Type: Current Feedback (mandatory match)
Number of Circuits: 2 (dual-channel configuration)
Package / Case: 8-SOIC form factor (pin-compatible)
Mounting Type: Surface Mount
Operating Temperature Range: -40°C ~ 85°C minimum

Secondary Compatibility Parameters:

Slew Rate: 1700V/µs (minimum acceptable performance)
-3dB Bandwidth: 200 MHz (minimum acceptable performance)
Voltage Supply Span: 5V to 10V operating range
Current Output per Channel: 70 mA (minimum acceptable)

Substitute parts are grouped into two categories based on performance characteristics:

Category A - Direct Performance Equivalents: Parts meeting or exceeding all primary and secondary parameters while maintaining backward compatibility.

Category B - Enhanced Performance Alternatives: Parts exceeding the EL5261ISZ specifications in bandwidth, slew rate, or output current, suitable for designs requiring improved performance margins or future-proofing.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Circuits	Slew Rate (V/µs)	-3dB Bandwidth (MHz)	Input Bias (µA)	Input Offset (mV)	Supply Current (mA)	Output Current (mA)	Supply Span Min (V)	Supply Span Max (V)	Temp Range (°C)	Package	Status
EL5261ISZ	Renesas	Current Feedback	2	1700	200	5	1.6	0.75	70	5	10	-40 to 85	8-SOIC	Obsolete
AD8002ARZ	Analog Devices	Current Feedback	2	1200	600	5	2	10	70	6	12	-40 to 85	8-SOIC	Active
AD8002ARZ-R7	Analog Devices	Current Feedback	2	1200	600	5	2	10	70	6	12	-40 to 85	8-SOIC	Active
AD8008ARZ	Analog Devices	Current Feedback	2	1000	500	4	0.5	9	130	5	12	-40 to 85	8-SOIC	Active
AD8008ARZ-REEL	Analog Devices	Current Feedback	2	1000	500	4	0.5	9	130	5	12	-40 to 85	8-SOIC	Active
AD8008ARZ-REEL7	Analog Devices	Current Feedback	2	1000	500	4	0.5	9	130	5	12	-40 to 85	8-SOIC	Active
AD8072JRZ	Analog Devices	Current Feedback	2	500	100	N/A	N/A	3.5	30	5	12	-40 to 85	8-SOIC	Last Time Buy
AD8072JRZ-REEL7	Analog Devices	Current Feedback	2	500	100	N/A	N/A	3.5	30	5	12	-40 to 85	8-SOIC	Last Time Buy
LMH6724MA/NOPB	National Semiconductor	Current Feedback	2	600	370	2	1	1	110	4.5	12	-40 to 85	8-SOIC	Active
LMH6724MAX/NOPB	National Semiconductor	Current Feedback	2	600	370	2	1	1	110	4.5	12	-40 to 85	8-SOIC	Active
LT1396CS8#PBF	Analog Devices	Current Feedback	2	800	400	10	1	4.6	80	4	12	0 to 70	8-SOIC	Active

Engineering Selection Recommendations

Primary Substitutes (Active Status, Full Temperature Range):

The AD8002ARZ and AD8002ARZ-R7 are the recommended primary substitutes for the EL5261ISZ. Both devices are manufactured by Analog Devices Inc. and maintain active product status. These parts operate across the full -40°C to 85°C temperature range, matching the original specification. The AD8002 series provides enhanced -3dB bandwidth of 600 MHz compared to the EL5261ISZ's 200 MHz, delivering improved performance margins. The packaging variants (tube for AD8002ARZ and tape & reel for AD8002ARZ-R7) accommodate different procurement and assembly requirements. Both are ROHS3 compliant with REACH unaffected status.

Secondary Substitutes (Enhanced Performance):

The AD8008ARZ, AD8008ARZ-REEL, and AD8008ARZ-REEL7 offer significantly enhanced performance characteristics, including 500 MHz bandwidth and 130 mA output current per channel. These devices are suitable for applications requiring higher performance margins or future design flexibility. The LMH6724MA/NOPB and LMH6724MAX/NOPB from National Semiconductor provide 370 MHz bandwidth with exceptionally low supply current (1 mA per channel pair), beneficial for power-constrained applications. All secondary substitutes maintain active product status and full temperature range operation.

Alternative Consideration (Limited Availability):

The AD8072JRZ and AD8072JRZ-REEL7 are classified as Last Time Buy. These devices provide lower bandwidth (100 MHz) and reduced output current (30 mA), making them suitable only for applications with relaxed performance requirements. The LT1396CS8#PBF operates within a narrower temperature range (0°C to 70°C), limiting its applicability to designs not requiring full military-grade temperature specifications.

Compliance and Certification:

All recommended substitutes maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original EL5261ISZ. Moisture sensitivity levels for active Analog Devices products are rated at MSL 1 (Unlimited), providing superior handling characteristics compared to the original part's MSL 3 (168 Hours).

Frequently Asked Questions (FAQ)

Q: Can the AD8002ARZ directly replace the EL5261ISZ in existing PCB designs?

A: Yes. The AD8002ARZ is pin-compatible with the EL5261ISZ in the 8-SOIC package. Both devices are dual-channel current feedback amplifiers with identical pinout. No PCB modifications are required. However, the AD8002ARZ requires a minimum supply voltage of 6V compared to the EL5261ISZ's 5V minimum, so verify your power supply specifications.

Q: What is the difference between AD8002ARZ and AD8002ARZ-R7?

A: Both parts are electrically identical. The primary difference is packaging: AD8002ARZ is supplied in tube packaging, while AD8002ARZ-R7 is supplied in tape & reel format. Select based on your assembly process requirements. Tape & reel packaging is standard for automated pick-and-place assembly.

Q: Why does the AD8008 series have higher output current (130 mA) than the EL5261ISZ (70 mA)?

A: The AD8008 series is designed for applications requiring higher output drive capability. If your circuit design only requires 70 mA output current, the AD8008 series will operate within specification with margin. Higher output current capability does not create compatibility issues in designs requiring lower current.

Q: Is the LMH6724 series suitable as a substitute?

A: The LMH6724MA/NOPB and LMH6724MAX/NOPB are functionally compatible substitutes with superior bandwidth (370 MHz) and lower supply current (1 mA per channel pair). These devices are particularly advantageous for power-sensitive applications. Verify that your circuit design can accommodate the lower input bias current (2 µA versus 5 µA) and lower input offset voltage (1 mV versus 1.6 mV).

Q: What is the significance of the "Last Time Buy" status for AD8072 devices?

A: Last Time Buy status indicates that Analog Devices will discontinue these products after a specified date. While currently available, AD8072 devices should not be selected for new designs. These parts are suitable only for legacy system maintenance or designs with relaxed performance requirements. For new designs, select from active-status alternatives.

Q: Can I use the LT1396CS8#PBF in applications requiring -40°C operation?

A: No. The LT1396CS8#PBF operates from 0°C to 70°C, which does not meet the EL5261ISZ's -40°C to 85°C specification. This device is unsuitable for military, aerospace, or automotive applications requiring full temperature range operation. Select AD8002ARZ, AD8008ARZ, or LMH6724 series for full temperature range compliance.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All recommended substitute parts listed maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with modern environmental and hazardous substance directives.

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

A: The EL5261ISZ provides 1700V/µs slew rate. The AD8002 series delivers 1200V/µs, while the AD8008 series provides 1000V/µs. Lower slew rates may introduce slight delays in high-frequency transient response but remain suitable for most signal conditioning applications. If your circuit operates at frequencies below 100 MHz, slew rate differences are negligible. For high-speed pulse or video applications, verify that the substitute's slew rate meets your specific timing requirements.

Q: What packaging options are available for substitute parts?

A: Substitute parts are available in tube and tape & reel packaging formats. Tube packaging is suitable for manual assembly or low-volume production. Tape & reel packaging is standard for automated assembly lines. All parts maintain the 8-SOIC form factor, ensuring mechanical compatibility with existing PCB designs.

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