ICL7611BCSA Equivalent & Substitute Parts

Part Overview

The ICL7611BCSA is a general-purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, housed in an 8-SOIC surface-mount package. This device features rail-to-rail output capability and is designed for low-power applications requiring single-circuit amplification. The ICL7611BCSA is classified as obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and procurement continuity. Active alternatives are available from current manufacturers with compatible electrical and mechanical specifications.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Output Type	Rail-to-Rail	—
Slew Rate	1.6	V/µs
Gain Bandwidth Product	1.4	MHz
Current - Input Bias	1	pA
Voltage - Input Offset	5	mV
Current - Supply	1	mA
Voltage - Supply Span (Min)	2	V
Voltage - Supply Span (Max)	16	V
Operating Temperature	0 to 70	°C
Mounting Type	Surface Mount	—
Package / Case	8-SOIC (0.154", 3.90mm Width)	—

Substitute Part Grouping Explanation

Substitution of the ICL7611BCSA is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

Slew Rate: 1.6 V/µs (must match)
Gain Bandwidth Product: 1.4 MHz (must match)
Current - Input Bias: 1 pA (must match)
Current - Supply: 1 mA (must match)
Voltage - Supply Span: 2 V to 16 V (must match)
Operating Temperature: 0°C to 70°C (must match)

Mechanical Compatibility Criteria:

Package / Case: 8-SOIC (0.154", 3.90mm Width) (must match)
Mounting Type: Surface Mount (must match)

Acceptable Parameter Variations:

Voltage - Input Offset: The ICL7611BCSA specifies 5 mV; substitute parts may specify 15 mV without affecting functional compatibility
Output Type: The ICL7611BCSA specifies rail-to-rail; substitute parts may not specify this parameter
Current - Output / Channel: Substitute parts may specify 40 mA where the main part does not specify this parameter
Product Status: Active substitutes are preferred over obsolete parts
RoHS Compliance: ROHS3-compliant substitutes are preferred over non-compliant parts

Substitutes are grouped into two categories: direct equivalents (identical base product number with different packaging or compliance status) and functional equivalents (different base product number with identical electrical and mechanical specifications).

Parameter Comparison

Parameter	ICL7611BCSA	ICL7611BCSA+	ICL7611DCBAZ	ICL7611DCBAZ-T	ICL7612DCBAZ	ICL7612DCBAZ-T
Manufacturer	Analog Devices Inc./Maxim Integrated	Analog Devices Inc./Maxim Integrated	Renesas Electronics Corporation	Renesas Electronics Corporation	Renesas Electronics Corporation	Renesas Electronics Corporation
Product Status	Obsolete	Active	Active	Active	Active	Active
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Number of Circuits	1	1	1	1	1	1
Slew Rate (V/µs)	1.6	1.6	1.6	1.6	1.6	1.6
Gain Bandwidth Product (MHz)	1.4	1.4	1.4	1.4	1.4	1.4
Current - Input Bias (pA)	1	1	1	1	1	1
Voltage - Input Offset (mV)	5	5	15	15	15	15
Current - Supply (mA)	1	1	1	1	1	1
Voltage - Supply Span Min (V)	2	2	2	2	2	2
Voltage - Supply Span Max (V)	16	16	16	16	16	16
Operating Temperature (°C)	0 to 70	0 to 70	0 to 70	0 to 70	0 to 70	0 to 70
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Type	Not specified	Tube	Tube	Cut Tape (CT) & Digi-Reel®	Tube	Tape & Reel (TR)
Inventory (Pcs)	4713	937	1300	2092	15550	3188

Engineering Selection Recommendations

Primary Substitute: ICL7611BCSA+

The ICL7611BCSA+ is the direct equivalent of the ICL7611BCSA with identical electrical specifications and 8-SOIC package configuration. The primary distinction is product status: ICL7611BCSA+ is active, whereas ICL7611BCSA is obsolete. ICL7611BCSA+ is ROHS3 compliant, providing regulatory advantage for new designs and procurement. This part is supplied in tube packaging and represents the most direct replacement path.

Secondary Substitutes: ICL7611DCBAZ and ICL7611DCBAZ-T

Both ICL7611DCBAZ and ICL7611DCBAZ-T are manufactured by Renesas Electronics Corporation and maintain identical electrical specifications to the main part. These devices are active products with ROHS3 compliance. The voltage input offset specification differs (15 mV versus 5 mV), which is within acceptable tolerance for general-purpose amplifier applications. ICL7611DCBAZ is supplied in tube packaging; ICL7611DCBAZ-T is supplied in cut tape and digi-reel format. Selection between these two depends on procurement and assembly requirements.

Tertiary Substitutes: ICL7612DCBAZ and ICL7612DCBAZ-T

The ICL7612DCBAZ and ICL7612DCBAZ-T represent functional equivalents with a different base product number (ICL7612 versus ICL7611). These devices maintain all critical electrical parameters and package specifications. Both are manufactured by Renesas Electronics Corporation, are active products, and are ROHS3 compliant. ICL7612DCBAZ is supplied in tube packaging with the highest inventory availability (15,550 pieces); ICL7612DCBAZ-T is supplied in tape and reel format. These parts are suitable for applications where the specific base product number is not a design constraint.

Compliance and Regulatory Considerations

All substitute parts listed are ROHS3 compliant, whereas the original ICL7611BCSA is RoHS non-compliant. For applications subject to RoHS directives or customer requirements, substitution with any of the listed active alternatives is necessary. All parts maintain REACH unaffected status and EAR99 export classification.

Frequently Asked Questions (FAQ)

Q: Can ICL7611DCBAZ be used as a direct replacement for ICL7611BCSA?

A: Yes. ICL7611DCBAZ maintains identical electrical specifications (slew rate, gain bandwidth product, input bias current, supply voltage range, and operating temperature) and identical package configuration (8-SOIC). The voltage input offset specification differs (15 mV versus 5 mV), which is acceptable for general-purpose amplifier applications. ICL7611DCBAZ is an active product with ROHS3 compliance.

Q: What is the difference between ICL7611DCBAZ and ICL7611DCBAZ-T?

A: Both parts are electrically identical. The difference is in packaging format: ICL7611DCBAZ is supplied in tube packaging, while ICL7611DCBAZ-T is supplied in cut tape and digi-reel format. Selection depends on assembly line requirements and procurement preferences.

Q: Can ICL7612DCBAZ replace ICL7611BCSA?

A: Yes. ICL7612DCBAZ maintains all critical electrical parameters (slew rate, gain bandwidth product, input bias current, supply voltage range, and operating temperature) and identical package configuration (8-SOIC). The base product number differs (ICL7612 versus ICL7611), but electrical and mechanical compatibility is complete. This part is active and ROHS3 compliant.

Q: Why does ICL7611BCSA+ have the same part number with a "+" suffix?

A: The "+" suffix indicates a packaging or compliance variant. ICL7611BCSA+ is the active, ROHS3-compliant version of the obsolete ICL7611BCSA. Electrical specifications are identical. The "+" designation distinguishes it from the obsolete predecessor.

Q: Are all substitute parts available in the same package?

A: Yes. All substitute parts listed are housed in 8-SOIC (0.154", 3.90mm Width) surface-mount packages, identical to the original ICL7611BCSA. Packaging format (tube, cut tape, tape and reel) varies by part number and supplier, but the physical package footprint and pin configuration are identical.

Q: What is the significance of the voltage input offset difference (5 mV versus 15 mV)?

A: The ICL7611BCSA specifies a maximum input offset voltage of 5 mV, while substitute parts ICL7611DCBAZ, ICL7611DCBAZ-T, ICL7612DCBAZ, and ICL7612DCBAZ-T specify 15 mV. This difference is acceptable for general-purpose amplifier applications where input offset voltage is not a critical design parameter. Applications requiring tighter offset voltage specifications should verify compatibility with the 15 mV specification.

Q: Which substitute part has the highest inventory availability?

A: ICL7612DCBAZ has the highest inventory availability at 15,550 pieces. This part is suitable for high-volume procurement and applications where the specific base product number is not a design constraint.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed (ICL7611BCSA+, ICL7611DCBAZ, ICL7611DCBAZ-T, ICL7612DCBAZ, and ICL7612DCBAZ-T) are ROHS3 compliant. The original ICL7611BCSA is RoHS non-compliant. For applications subject to RoHS directives, substitution with any of the listed active alternatives is required.

Q: Can these parts be used interchangeably in existing designs?

A: Yes, with the following considerations: all substitute parts maintain identical electrical specifications for slew rate, gain bandwidth product, input bias current, supply voltage range, and operating temperature. All are housed in identical 8-SOIC packages with identical pin configurations. The voltage input offset specification differs on some parts (15 mV versus 5 mV), which should be verified against application requirements. No design modifications are required for mechanical or electrical compatibility.

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