LT1633CS Equivalent & Substitute Parts

Part Overview

The LT1633CS is a general-purpose operational amplifier integrated circuit manufactured by Analog Devices Inc. This four-channel rail-to-rail amplifier operates across a wide supply voltage range of 2.7 V to 36 V and is housed in a 14-SOIC surface-mount package. The device is classified as Active product status and is RoHS3 compliant. Alternative equivalent and substitute parts are identified based on matching functional specifications, package compatibility, and electrical performance parameters within the linear amplifier category.

Key Parameters

Parameter	Value
Manufacturer	Analog Devices Inc.
Category	Linear, Amplifiers
Amplifier Type	General Purpose
Number of Circuits	4
Output Type	Rail-to-Rail
Package / Case	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Voltage - Supply Span (Min)	2.7 V
Voltage - Supply Span (Max)	36 V
Operating Temperature	0°C ~ 70°C
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the LT1633CS are identified based on the following critical parameters that determine functional equivalence:

Direct Packaging Equivalent: LT1633CS#PBF shares identical electrical specifications with the main part number, differing only in packaging format (Tube versus standard packaging). This part maintains all performance characteristics including slew rate, gain bandwidth product, input bias current, and supply voltage specifications.

Similar Functional Alternatives: The OP484 series parts (OP484ESZ-REEL, OP484FSZ, OP484FSZ-REEL7) provide four-channel rail-to-rail general-purpose amplification in the same 14-SOIC package footprint. These alternatives operate within the overlapping supply voltage range (3 V to 36 V minimum to maximum) and maintain surface-mount compatibility. However, these parts exhibit different electrical performance characteristics including reduced slew rate (4 V/µs versus 45 V/µs), lower gain bandwidth product (4.25 MHz versus 45 MHz), and different input bias current specifications (80 nA versus 1.15 µA).

Substitution eligibility is determined by:

Identical package and case dimensions (14-SOIC 0.154" width)
Matching number of circuits (4-channel configuration)
Rail-to-rail output capability
Surface-mount technology compatibility
Overlapping supply voltage operating range
Active product status and RoHS3 compliance

Parameter Comparison

Parameter	LT1633CS	LT1633CS#PBF	OP484ESZ-REEL	OP484FSZ	OP484FSZ-REEL7
Manufacturer	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Number of Circuits	4	4	4	4	4
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate	45 V/µs	45 V/µs	4 V/µs	4 V/µs	4 V/µs
Gain Bandwidth Product	45 MHz	45 MHz	4.25 MHz	4.25 MHz	4.25 MHz
Current - Input Bias	1.15 µA	1.15 µA	80 nA	80 nA	80 nA
Voltage - Input Offset	500 µV	500 µV	150 µV	250 µV	250 µV
Current - Output / Channel	70 mA	70 mA	10 mA	10 mA	10 mA
Voltage - Supply Span (Min)	2.7 V	2.7 V	3 V	3 V	3 V
Voltage - Supply Span (Max)	36 V	36 V	36 V	36 V	36 V
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)	14-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Equivalent Selection: LT1633CS#PBF is the direct equivalent part number, differing only in packaging format (Tube). This part maintains identical electrical performance specifications and operating characteristics. Selection of LT1633CS#PBF is appropriate when tube packaging is required for automated assembly processes or when inventory availability of the standard LT1633CS packaging is limited.

Alternative Selection Criteria: The OP484 series (OP484ESZ-REEL, OP484FSZ, OP484FSZ-REEL7) represents a functional alternative for applications where the reduced performance specifications are acceptable. These parts are suitable for designs that do not require the higher slew rate (45 V/µs) and gain bandwidth product (45 MHz) of the LT1633CS. The OP484 series provides extended operating temperature range (-40°C to 125°C) compared to the LT1633CS (0°C to 70°C), which may be advantageous for industrial or automotive applications.

All substitute parts maintain:

RoHS3 compliance status
Active product status with ongoing manufacturer support
Identical 14-SOIC package footprint for direct PCB compatibility
Four-channel rail-to-rail amplifier configuration
Surface-mount technology compatibility

Selection between packaging options (Cut Tape & Digi-Reel versus Tube) depends on assembly equipment capabilities and production volume requirements.

Frequently Asked Questions (FAQ)

Q: Can LT1633CS#PBF be used as a direct replacement for LT1633CS?

A: Yes. LT1633CS#PBF is electrically identical to LT1633CS. The difference is packaging format only. LT1633CS#PBF is supplied in Tube packaging, while LT1633CS uses standard packaging. Both parts have identical electrical specifications, operating temperature range (0°C to 70°C), and supply voltage range (2.7 V to 36 V).

Q: Are OP484 series parts compatible with LT1633CS applications?

A: OP484 series parts (OP484ESZ-REEL, OP484FSZ, OP484FSZ-REEL7) share the same 14-SOIC package footprint and four-channel rail-to-rail configuration. However, they have different electrical performance characteristics. The OP484 series has lower slew rate (4 V/µs versus 45 V/µs) and lower gain bandwidth product (4.25 MHz versus 45 MHz). Compatibility depends on whether the application requires the higher performance specifications of the LT1633CS.

Q: What is the difference between OP484ESZ-REEL, OP484FSZ, and OP484FSZ-REEL7?

A: All three OP484 variants have identical electrical specifications. The differences are in packaging format: OP484ESZ-REEL and OP484FSZ-REEL7 are supplied in Cut Tape & Digi-Reel format, while OP484FSZ is supplied in Tube packaging. Selection depends on assembly equipment compatibility and production volume requirements.

Q: Does the OP484 series support the same supply voltage range as LT1633CS?

A: The OP484 series supports a minimum supply voltage of 3 V, while LT1633CS supports 2.7 V minimum. The maximum supply voltage for both is 36 V. Applications requiring operation below 3 V must use LT1633CS or LT1633CS#PBF.

Q: What is the operating temperature difference between LT1633CS and OP484 series?

A: LT1633CS operates from 0°C to 70°C. The OP484 series operates from -40°C to 125°C, providing extended temperature range capability. Applications requiring operation outside the 0°C to 70°C range must use the OP484 series.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. LT1633CS, LT1633CS#PBF, OP484ESZ-REEL, OP484FSZ, and OP484FSZ-REEL7 are all RoHS3 compliant and suitable for applications with RoHS compliance requirements.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes, all parts use the identical 14-SOIC (0.154", 3.90mm Width) package footprint and surface-mount technology. PCB layout and footprint design are compatible across all listed parts. Circuit performance differences depend on the electrical specification variations noted in the parameter comparison table.

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