EL2244CSZ Equivalent & Substitute Parts

Part Overview

The EL2244CSZ is a voltage feedback amplifier integrated circuit 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, indicating that it is no longer in active production. The identification of equivalent and substitute parts is necessary to support ongoing maintenance, repair, and redesign efforts for legacy systems utilizing this component. Substitute parts must maintain functional compatibility through equivalent electrical performance and identical physical packaging specifications.

Key Parameters

Parameter	Value	Unit
Amplifier Type	Voltage Feedback	—
Number of Circuits	2	—
Slew Rate	325	V/µs
Gain Bandwidth Product	60	MHz
-3dB Bandwidth	120	MHz
Current - Input Bias	2.8	µA
Voltage - Input Offset	500	µV
Current - Supply (x2 Channels)	5.2	mA
Current - Output / Channel	75	mA
Voltage - Supply Span (Min)	2.5	V
Voltage - Supply Span (Max)	36	V
Operating Temperature	-40 to 85	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution compatibility for the EL2244CSZ is determined by the following critical parameters: dual-channel voltage feedback amplifier topology, 8-SOIC surface mount package, operating temperature range of -40°C to 85°C, and supply voltage range of 2.5V to 36V. Substitute parts must satisfy these core requirements to ensure functional and mechanical compatibility within existing circuit designs.

The substitute parts identified fall into two functional categories based on electrical performance characteristics:

Category 1: Direct Performance Equivalents — Parts with slew rate and bandwidth specifications closely aligned to the EL2244CSZ (60 MHz gain bandwidth product, 120 MHz -3dB bandwidth, 325 V/µs slew rate). These parts maintain similar frequency response and transient performance.

Category 2: Enhanced Performance Alternatives — Parts with superior slew rate and bandwidth specifications that exceed the EL2244CSZ performance envelope. These parts provide higher-speed operation and wider bandwidth while maintaining backward compatibility through identical package and pin configuration.

All substitute parts listed are housed in 8-SOIC packages with surface mount configuration, operate across the -40°C to 85°C temperature range, and comply with RoHS3 and REACH requirements.

Parameter Comparison

Parameter	EL2244CSZ	ISL55002IBZ	LT1361CS8	LT1361CS8#PBF	LT1361CS8#TR	LT1361CS8#TRPBF	THS4022CD	THS4022ID	THS4032CD	THS4032CDR	THS4032ID
Manufacturer	Renesas	Intersil	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Amplifier Type	Voltage Feedback	Voltage Feedback	Voltage Feedback	Voltage Feedback	Voltage Feedback	Voltage Feedback	Voltage Feedback	Voltage Feedback	Voltage Feedback	Voltage Feedback	Voltage Feedback
Number of Circuits	2	2	2	2	2	2	2	2	2	2	2
Slew Rate (V/µs)	325	300	800	800	800	800	470	470	100	100	100
Gain Bandwidth Product (MHz)	60	70	50	50	50	50	350	350	120	120	120
-3dB Bandwidth (MHz)	120	200	—	—	—	—	350	350	100	100	100
Current - Input Bias (µA)	2.8	0.6	0.3	0.3	0.3	0.3	3	3	3	3	3
Voltage - Input Offset (µV)	500	1200	300	300	300	300	500	500	500	500	500
Current - Supply (mA, x2 Channels)	5.2	8.5	4	4	4	4	7.8	7.8	8.5	8.5	8.5
Current - Output / Channel (mA)	75	140	34	34	34	34	100	100	90	90	90
Voltage - Supply Span Min (V)	2.5	4.5	5	5	5	5	9	9	9	9	9
Voltage - Supply Span Max (V)	36	30	30	30	30	30	32	32	32	32	32
Operating Temperature (°C)	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	0 to 70	-40 to 85	0 to 70	0 to 70	-40 to 85
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active	Active	Last Time Buy	Last Time Buy	Obsolete	Obsolete	Last Time Buy
RoHS Status	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:

The LT1361CS8, LT1361CS8#PBF, LT1361CS8#TR, and LT1361CS8#TRPBF variants from Analog Devices are active production parts that provide functional substitution for the obsolete EL2244CSZ. These parts maintain the dual-channel voltage feedback amplifier configuration in 8-SOIC packaging with full -40°C to 85°C operating temperature coverage. The LT1361 series exhibits superior slew rate performance (800 V/µs versus 325 V/µs) and lower input bias current (300 nA versus 2.8 µA), resulting in improved signal fidelity and reduced offset drift. All LT1361 variants are ROHS3 compliant with unlimited moisture sensitivity rating. Selection among LT1361 variants depends on packaging requirements: LT1361CS8 for standard tube packaging, LT1361CS8#PBF for tube with lead-free designation, LT1361CS8#TR for tape and reel, and LT1361CS8#TRPBF for tape and reel with lead-free designation.

For Enhanced Performance Applications:

The THS4022CD and THS4022ID from Texas Instruments provide significantly enhanced bandwidth performance (350 MHz gain bandwidth product and -3dB bandwidth) with 470 V/µs slew rate. These parts are classified as Last Time Buy status, indicating limited future availability. The THS4022ID supports the full -40°C to 85°C temperature range, while THS4022CD operates from 0°C to 70°C. Both require minimum 9V supply voltage compared to the EL2244CSZ minimum of 2.5V.

For Moderate Performance Substitution:

The THS4032CD, THS4032CDR, and THS4032ID from Texas Instruments provide 120 MHz gain bandwidth product and 100 MHz -3dB bandwidth with 100 V/µs slew rate. These parts are classified as obsolete or Last Time Buy status. The THS4032ID supports full -40°C to 85°C operation, while THS4032CD and THS4032CDR operate from 0°C to 70°C. Minimum supply voltage requirement is 9V.

For Alternative Topology:

The ISL55002IBZ from Intersil provides 70 MHz gain bandwidth product and 200 MHz -3dB bandwidth with 300 V/µs slew rate. This part is in active production status and supports -40°C to 85°C operation. Minimum supply voltage is 4.5V, which is higher than the EL2244CSZ but lower than Texas Instruments alternatives. Input bias current is significantly lower at 600 nA.

Compliance and Availability Considerations:

All identified substitute parts comply with RoHS3 requirements and carry unlimited moisture sensitivity rating (MSL 1). Parts in active production status (LT1361 series and ISL55002IBZ) are recommended for new designs and long-term production support. Parts classified as Last Time Buy (THS4022 series, THS4032ID) have limited future availability and should be evaluated for long-term supply chain planning. Obsolete parts (THS4032CD, THS4032CDR) are not recommended for new applications.

Frequently Asked Questions (FAQ)

Q: Can the LT1361CS8 directly replace the EL2244CSZ in existing circuit boards?

A: Yes, the LT1361CS8 provides direct pin-compatible substitution in 8-SOIC packaging. Both devices are dual-channel voltage feedback amplifiers with identical package dimensions (0.154" width, 3.90mm). The LT1361CS8 operates across the same -40°C to 85°C temperature range. However, the LT1361CS8 requires minimum 5V supply voltage compared to the EL2244CSZ minimum of 2.5V. Verify that your circuit design supplies at least 5V before implementing this substitution.

Q: What is the difference between LT1361CS8, LT1361CS8#PBF, LT1361CS8#TR, and LT1361CS8#TRPBF?

A: These are identical devices with different packaging and lead finish specifications. LT1361CS8 is supplied in standard tube packaging. LT1361CS8#PBF is tube packaging with lead-free (PBF) designation. LT1361CS8#TR is supplied in tape and reel format for automated assembly. LT1361CS8#TRPBF is tape and reel with lead-free designation. Electrical performance and pin configuration are identical across all variants. Selection depends on your procurement and assembly process requirements.

Q: Why do some substitute parts have higher minimum supply voltage requirements?

A: The EL2244CSZ operates from 2.5V to 36V, while many substitutes require minimum 5V or 9V supply. This reflects different internal circuit design approaches and performance optimization targets. The LT1361 series (5V minimum) and THS4022/THS4032 series (9V minimum) prioritize different performance characteristics. Verify that your power supply design can accommodate the minimum voltage requirement of your selected substitute part.

Q: Is the ISL55002IBZ a suitable replacement for the EL2244CSZ?

A: The ISL55002IBZ provides functional substitution with superior -3dB bandwidth (200 MHz versus 120 MHz) and comparable slew rate (300 V/µs versus 325 V/µs). It is in active production status, ensuring long-term availability. The ISL55002IBZ requires minimum 4.5V supply voltage and operates across -40°C to 85°C. Input bias current is significantly lower (600 nA versus 2.8 µA), which may affect circuit biasing in some applications. Verify input bias current compatibility with your circuit design before implementation.

Q: What is the significance of "Last Time Buy" and "Obsolete" product status?

A: "Last Time Buy" status indicates that the manufacturer has announced end-of-life for the part, with a final purchase deadline. After this date, the part will no longer be available from the manufacturer. "Obsolete" status indicates that the part is no longer manufactured and is available only through existing inventory channels. For new designs and long-term production, select parts with "Active" status such as the LT1361 series or ISL55002IBZ to ensure sustained supply chain support.

Q: Can I use THS4022 or THS4032 series parts as replacements?

A: The THS4022 and THS4032 series provide functional substitution with different performance characteristics. THS4022 offers enhanced bandwidth (350 MHz) suitable for high-speed applications. THS4032 provides moderate bandwidth (120 MHz) comparable to the EL2244CSZ. However, both series require minimum 9V supply voltage and have limited availability status (Last Time Buy or Obsolete). These parts are suitable for replacement in existing designs but are not recommended for new applications due to supply constraints.

Q: What are the key electrical differences between the substitute parts?

A: The primary differences are slew rate, gain bandwidth product, input bias current, and supply voltage requirements. Slew rate ranges from 100 V/µs (THS4032 series) to 800 V/µs (LT1361 series), affecting transient response speed. Gain bandwidth product ranges from 50 MHz (LT1361) to 350 MHz (THS4022), determining frequency response. Input bias current ranges from 300 nA (LT1361) to 3 µA (THS4022/THS4032), affecting input impedance and offset drift. Supply voltage minimums range from 2.5V (EL2244CSZ) to 9V (THS4022/THS4032). Select the substitute part whose electrical characteristics match your circuit requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all identified substitute parts comply with RoHS3 requirements and carry REACH Unaffected status. All parts have unlimited moisture sensitivity rating (MSL 1), indicating no special handling requirements during storage or assembly. This ensures compatibility with modern manufacturing processes and environmental regulations.

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