LTC6079IGN#TRPBF Equivalent & Substitute Parts

Part Overview

The LTC6079IGN#TRPBF is a CMOS rail-to-rail operational amplifier integrated circuit manufactured by Analog Devices Inc. This quad amplifier device is housed in a 16-SSOP surface mount package and operates across a supply voltage range of 2.7 V to 5.5 V with an operating temperature range of -40°C to 85°C. The device is classified as Active product status and maintains full RoHS3 compliance with REACH unaffected designation.

Substitute parts are identified when equivalent functional performance can be achieved through alternative manufacturer offerings that maintain compatibility with the same electrical specifications, package form factor, and operational parameters. The LTC6079IGN#TRPBF serves as the reference baseline for identifying suitable alternatives in quad CMOS amplifier applications.

Key Parameters

Parameter	LTC6079IGN#TRPBF
Manufacturer	Analog Devices Inc.
Amplifier Type	CMOS
Number of Circuits	4
Output Type	Rail-to-Rail
Package / Case	16-SSOP (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Voltage - Supply Span (Min)	2.7 V
Voltage - Supply Span (Max)	5.5 V
Operating Temperature	-40°C ~ 85°C
Product Status	Active
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the LTC6079IGN#TRPBF is determined by the following critical parameters:

Primary Compatibility Criteria:

Amplifier Type: CMOS
Number of Circuits: 4 (quad configuration)
Output Type: Rail-to-Rail
Mounting Type: Surface Mount
Supply Voltage Range: Minimum 2.7 V, Maximum 5.5 V
Operating Temperature Range: -40°C to 85°C minimum
Package Form Factor: 16-pin SSOP or compatible pinout

Secondary Electrical Parameters:

Current - Input Bias: 0.2 pA or lower
Current - Output / Channel: 25 mA or higher
Voltage - Input Offset: Within acceptable tolerance for application
Current - Supply: Total supply current per quad configuration

Substitute parts identified maintain the core functional architecture of quad CMOS rail-to-rail amplifiers with compatible electrical performance within the specified operating envelope. All substitute parts listed are Active status products with full RoHS3 compliance.

Parameter Comparison

Parameter	LTC6079IGN#TRPBF	AD8604ARQZ	OPA4343EA/250	OPA4350EA/250	OPA4353EA/250
Manufacturer	Analog Devices Inc.	Analog Devices Inc.	Texas Instruments	Texas Instruments	Texas Instruments
Amplifier Type	CMOS	CMOS	CMOS	CMOS	CMOS
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	0.05 V/µs	6 V/µs	6 V/µs	22 V/µs	22 V/µs
Gain Bandwidth Product	750 kHz	8.4 MHz	5.5 MHz	38 MHz	44 MHz
Current - Input Bias	0.2 pA	0.2 pA	0.2 pA	0.5 pA	0.5 pA
Voltage - Input Offset	30 µV	80 µV	2 mV	150 µV	3 mV
Current - Supply (x4 Channels)	55 µA	750 µA	850 µA	5.2 mA	5.2 mA
Current - Output / Channel	25 mA	50 mA	50 mA	40 mA	40 mA
Voltage - Supply Span (Min)	2.7 V	2.7 V	2.5 V	2.7 V	2.5 V
Voltage - Supply Span (Max)	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	16-SSOP	16-QSOP	16-SSOP	16-SSOP	16-SSOP
Product Status	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	2 (1 Year)	2 (1 Year)	2 (1 Year)

Engineering Selection Recommendations

Direct Package Compatibility:

OPA4343EA/250, OPA4350EA/250, and OPA4353EA/250 are packaged in 16-SSOP form factor, providing direct mechanical and electrical pin compatibility with the LTC6079IGN#TRPBF. These Texas Instruments MicroAmplifier™ series devices maintain identical package dimensions and pinout configuration, enabling direct board-level substitution without layout modification.

AD8604ARQZ is packaged in 16-QSOP form factor, which differs from the 16-SSOP package of the LTC6079IGN#TRPBF. While both are 16-pin surface mount packages with similar pitch specifications, the QSOP package has different mechanical dimensions and may require PCB layout adjustment for proper fit and thermal performance.

Compliance and Product Status:

All identified substitute parts maintain Active product status designation, ensuring continued manufacturing support and availability. All substitute parts are RoHS3 compliant and REACH unaffected, matching the regulatory compliance profile of the LTC6079IGN#TRPBF.

Moisture Sensitivity Consideration:

The LTC6079IGN#TRPBF carries MSL 1 (Unlimited) rating, indicating no moisture sensitivity constraints during storage and handling. OPA4343EA/250, OPA4350EA/250, and OPA4353EA/250 carry MSL 2 (1 Year) rating, requiring controlled storage conditions. AD8604ARQZ maintains MSL 1 (Unlimited) rating, matching the moisture sensitivity profile of the main part.

Supply Current Profile:

The LTC6079IGN#TRPBF operates at 55 µA total supply current across four channels, representing ultra-low power consumption. Substitute parts exhibit higher supply current requirements: AD8604ARQZ at 750 µA, OPA4343EA/250 at 850 µA, and OPA4350EA/250 and OPA4353EA/250 at 5.2 mA. Selection of substitute parts should account for increased power dissipation in battery-powered or power-constrained applications.

Frequently Asked Questions (FAQ)

Q: Can the AD8604ARQZ be used as a direct replacement for the LTC6079IGN#TRPBF?

A: AD8604ARQZ is functionally equivalent as a quad CMOS rail-to-rail amplifier but uses a 16-QSOP package instead of 16-SSOP. While both packages have 16 pins with similar pitch, the mechanical dimensions differ. Direct board-level substitution requires verification of PCB footprint compatibility and thermal management requirements. The AD8604ARQZ operates across an extended temperature range of -40°C to 125°C compared to the LTC6079IGN#TRPBF's -40°C to 85°C range.

Q: Which substitute part has the lowest power consumption?

A: The LTC6079IGN#TRPBF maintains the lowest supply current at 55 µA across four channels. Among the identified substitutes, AD8604ARQZ consumes 750 µA, OPA4343EA/250 consumes 850 µA, and both OPA4350EA/250 and OPA4353EA/250 consume 5.2 mA. For ultra-low power applications, the LTC6079IGN#TRPBF remains the optimal choice.

Q: Are the Texas Instruments OPA43xx series parts pin-compatible with the LTC6079IGN#TRPBF?

A: OPA4343EA/250, OPA4350EA/250, and OPA4353EA/250 are all packaged in 16-SSOP form factor with identical package dimensions to the LTC6079IGN#TRPBF. These parts maintain electrical pin compatibility and can be used as direct substitutes without PCB layout modification.

Q: What is the difference between OPA4350EA/250 and OPA4353EA/250?

A: Both OPA4350EA/250 and OPA4353EA/250 share identical electrical specifications including slew rate (22 V/µs), supply current (5.2 mA), and output current (40 mA). The primary difference is the gain bandwidth product: OPA4350EA/250 operates at 38 MHz while OPA4353EA/250 operates at 44 MHz. OPA4353EA/250 also exhibits higher voltage input offset (3 mV) compared to OPA4350EA/250 (150 µV).

Q: Does moisture sensitivity affect component selection?

A: The LTC6079IGN#TRPBF carries MSL 1 (Unlimited) rating, requiring no special moisture control during storage. OPA4343EA/250, OPA4350EA/250, and OPA4353EA/250 carry MSL 2 (1 Year) rating, requiring controlled storage conditions and desiccant packaging. AD8604ARQZ maintains MSL 1 (Unlimited) rating. For applications with extended storage periods or high-humidity environments, MSL rating should be considered in procurement planning.

Q: What are the key electrical differences between the LTC6079IGN#TRPBF and substitute parts?

A: The LTC6079IGN#TRPBF features the lowest slew rate (0.05 V/µs) and gain bandwidth product (750 kHz) among all listed parts, making it suitable for low-frequency, low-noise applications. Substitute parts offer significantly higher slew rates and bandwidth products: AD8604ARQZ at 6 V/µs and 8.4 MHz, OPA4343EA/250 at 6 V/µs and 5.5 MHz, and OPA4350EA/250 and OPA4353EA/250 at 22 V/µs and 38-44 MHz respectively. Selection should be based on application bandwidth requirements and signal fidelity specifications.

Q: Can substitute parts operate at the same supply voltage range as the LTC6079IGN#TRPBF?

A: All identified substitute parts operate within the 2.7 V to 5.5 V supply range specified for the LTC6079IGN#TRPBF. OPA4343EA/250 and OPA4353EA/250 support a lower minimum supply voltage of 2.5 V, providing additional flexibility in low-voltage applications. All parts maintain the 5.5 V maximum supply voltage specification.

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