LT1179SW#TRPBF Equivalent & Substitute Parts

Part Overview

The LT1179SW#TRPBF is a general purpose operational amplifier integrated circuit manufactured by Analog Devices Inc. This device contains four independent amplifier circuits in a 16-SOIC surface mount package and is classified as an active product. The LT1179SW#TRPBF is supplied in Tape & Reel packaging format, suitable for automated assembly processes.

Substitute parts are identified when equivalent functional performance can be achieved within the allowed electrical and mechanical parameters of the general purpose amplifier category. Substitution is necessary when the primary part becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design specifications permit operation within the parameter ranges of alternative devices.

Key Parameters

Parameter	LT1179SW#TRPBF
Manufacturer	Analog Devices Inc.
Category	Linear, Amplifiers
Amplifier Type	General Purpose
Number of Circuits	4
Package / Case	16-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount
Voltage - Supply Span (Min)	5 V
Voltage - Supply Span (Max)	30 V
Operating Temperature	0°C ~ 70°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the LT1179SW#TRPBF are identified based on the following criteria:

Mandatory Compatibility Parameters:

Amplifier Type: General Purpose
Number of Circuits: 4
Package / Case: 16-SOIC (0.295", 7.50mm Width)
Mounting Type: Surface Mount
Product Status: Active
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Electrical Operating Range:

Voltage - Supply Span (Min): 4 V or lower (encompasses 5 V minimum requirement)
Voltage - Supply Span (Max): 30 V or higher (encompasses 30 V maximum requirement)
Operating Temperature: Must support 0°C ~ 70°C range

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

Group 1: Direct Electrical Equivalents (AD704 Series) Parts AD704JRZ-16, AD704JRZ-16-REEL, and OP497GSZ-REEL operate within the supply voltage range of the LT1179SW#TRPBF and maintain the same package configuration. These devices differ in slew rate, gain bandwidth product, and input bias current but remain functionally compatible within the general purpose amplifier category.

Group 2: Enhanced Performance Alternatives (TLE2144 Series) Parts TLE2144CDW, TLE2144CDWR, and TLE2144IDW feature rail-to-rail output capability and significantly higher slew rates and gain bandwidth products. These devices operate within an extended supply voltage range and are compatible with the 16-SOIC package format.

Parameter Comparison

Parameter	LT1179SW#TRPBF	AD704JRZ-16	AD704JRZ-16-REEL	OP497GSZ	OP497GSZ-REEL	TLE2144CDW	TLE2144CDWR	TLE2144IDW
Manufacturer	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Texas Instruments	Texas Instruments	Texas Instruments
Number of Circuits	4	4	4	4	4	4	4	4
Package / Case	16-SOIC (0.295", 7.50mm Width)	16-SOIC (0.295", 7.50mm Width)	16-SOIC (0.295", 7.50mm Width)	16-SOIC (0.295", 7.50mm Width)	16-SOIC (0.295", 7.50mm Width)	16-SOIC (0.295", 7.50mm Width)	16-SOIC (0.295", 7.50mm Width)	16-SOIC (0.295", 7.50mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Voltage - Supply Span (Min)	5 V	4 V	4 V	4 V	4 V	4 V	4 V	4 V
Voltage - Supply Span (Max)	30 V	36 V	36 V	40 V	40 V	44 V	44 V	44 V
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 105°C
Slew Rate	0.04 V/µs	0.1 V/µs	0.1 V/µs	0.15 V/µs	0.15 V/µs	45 V/µs	45 V/µs	45 V/µs
Gain Bandwidth Product	85 kHz	800 kHz	800 kHz	500 kHz	500 kHz	5.9 MHz	5.9 MHz	5.9 MHz
Current - Input Bias	3 nA	100 pA	100 pA	60 pA	60 pA	700 nA	700 nA	700 nA
Voltage - Input Offset	160 µV	50 µV	50 µV	80 µV	80 µV	290 µV	290 µV	290 µV
Current - Supply	17 µA (x4 Channels)	1.5 mA (x4 Channels)	1.5 mA (x4 Channels)	525 µA (x4 Channels)	525 µA (x4 Channels)	6.9 mA (x4 Channels)	6.9 mA (x4 Channels)	6.9 mA (x4 Channels)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All substitute parts listed are active products with ROHS3 compliance and MSL Level 1 rating, meeting the regulatory and environmental requirements of the LT1179SW#TRPBF.

For Direct Substitution with Minimal Performance Change: AD704JRZ-16 and AD704JRZ-16-REEL are suitable when packaging format flexibility is required. These parts maintain compatibility with the 5 V to 30 V supply range and 0°C to 70°C operating temperature of the LT1179SW#TRPBF. The AD704 series exhibits higher slew rate and gain bandwidth product compared to the LT1179SW#TRPBF, with lower input bias current and input offset voltage.

For Extended Temperature Range Applications: OP497GSZ and OP497GSZ-REEL support operating temperatures from -40°C to 85°C and supply voltages up to 40 V, providing expanded operational capability beyond the LT1179SW#TRPBF specifications. These devices are suitable when wider temperature performance is required.

For High-Speed and Rail-to-Rail Output Applications: TLE2144CDW, TLE2144CDWR, and TLE2144IDW feature rail-to-rail output capability with significantly enhanced slew rate (45 V/µs) and gain bandwidth product (5.9 MHz). TLE2144IDW supports extended temperature range (-40°C to 105°C) and is suitable for demanding dynamic performance requirements. These devices operate within the 4 V to 44 V supply range, encompassing the LT1179SW#TRPBF specifications.

Frequently Asked Questions (FAQ)

Q: Can AD704JRZ-16 replace LT1179SW#TRPBF in all applications? A: AD704JRZ-16 is electrically compatible within the supply voltage range of 5 V to 30 V and operating temperature range of 0°C to 70°C. The primary difference is packaging format (Tube versus Tape & Reel). AD704JRZ-16 exhibits superior slew rate and gain bandwidth product. Verification of circuit performance is required for applications sensitive to these parameter differences.

Q: What is the difference between AD704JRZ-16 and AD704JRZ-16-REEL? A: Both parts are electrically identical. The difference is packaging format: AD704JRZ-16 is supplied in Tube packaging, while AD704JRZ-16-REEL is supplied in Tape & Reel format. Selection depends on manufacturing assembly requirements.

Q: Why do TLE2144 devices have higher supply current than the LT1179SW#TRPBF? A: TLE2144 devices feature rail-to-rail output capability and significantly higher slew rate (45 V/µs versus 0.04 V/µs), which requires higher quiescent current consumption. This is a fundamental trade-off between power consumption and dynamic performance.

Q: Can OP497GSZ be used in applications requiring 0°C to 70°C operation? A: Yes. OP497GSZ supports operating temperatures from -40°C to 85°C, which encompasses the 0°C to 70°C range. The extended temperature capability does not restrict operation within the narrower range.

Q: Are all substitute parts available in the same 16-SOIC package? A: Yes. All substitute parts use the 16-SOIC (0.295", 7.50mm Width) package format, ensuring mechanical compatibility with the LT1179SW#TRPBF footprint.

Q: What is the significance of MSL Level 1 rating? A: MSL Level 1 indicates unlimited shelf life and moisture sensitivity. All listed parts, including the LT1179SW#TRPBF, have MSL Level 1 rating, meaning they do not require special moisture control during storage or handling.

Q: Which substitute part has the lowest input bias current? A: OP497GSZ and OP497GSZ-REEL have the lowest input bias current at 60 pA, compared to 3 nA for the LT1179SW#TRPBF. This characteristic is beneficial for high-impedance input applications.

Q: Can TLE2144IDW operate at temperatures above 70°C? A: Yes. TLE2144IDW supports operating temperatures from -40°C to 105°C, extending operation beyond the 0°C to 70°C range of the LT1179SW#TRPBF. This device is suitable for high-temperature applications.

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