LT1179SW#PBF Equivalent & Substitute Parts

Part Overview

The LT1179SW#PBF is a general purpose operational amplifier integrated circuit manufactured by Analog Devices Inc. This 4-circuit operational amplifier is housed in a 16-SOIC surface mount package and is designed for applications requiring low-power amplification with moderate bandwidth characteristics. The device is currently in active production status with 1109 pieces available in new original inventory.

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design requirements permit operation with alternative electrical characteristics within acceptable parameters. The substitute parts listed maintain the same package footprint and circuit count while offering variations in performance specifications such as slew rate, gain bandwidth product, and supply current consumption.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	LT1179SW#PBF	—
Manufacturer	Analog Devices Inc.	—
Category	Linear, Amplifiers	—
Number of Circuits	4	—
Package / Case	16-SOIC (0.295", 7.50mm Width)	—
Mounting Type	Surface Mount	—
Slew Rate	0.04	V/µs
Gain Bandwidth Product	85	kHz
Current - Input Bias	3	nA
Voltage - Input Offset	160	µV
Current - Supply	17	µA (x4 Channels)
Voltage - Supply Span (Min)	5	V
Voltage - Supply Span (Max)	30	V
Operating Temperature	0 to 70	°C
RoHS Status	ROHS3 Compliant	—
Product Status	Active	—

Substitute Part Grouping Explanation

Substitution compatibility for the LT1179SW#PBF is determined by the following critical parameters:

Mechanical Compatibility:

Package type: 16-SOIC (0.295", 7.50mm Width)
Mounting type: Surface Mount
Number of circuits: 4

Electrical Compatibility Criteria:

Voltage supply span must encompass or exceed the operating range of 5V to 30V
Operating temperature range must support the application requirements
Slew rate, gain bandwidth product, input bias current, and input offset voltage determine performance suitability

All substitute parts listed maintain identical package geometry and circuit count. Substitutes are grouped into two categories based on electrical performance:

Category A (Lower Performance): AD704JRZ-16, AD704JRZ-16-REEL, OP497GSZ, OP497GSZ-REEL

These parts offer higher slew rates and gain bandwidth products than the LT1179SW#PBF
Supply voltage ranges exceed the minimum requirement of 5V
Lower input bias current and offset voltage specifications

Category B (Higher Performance): TLE2144CDW, TLE2144CDWR, TLE2144IDW

These parts feature rail-to-rail output capability
Significantly higher slew rates and gain bandwidth products
Extended supply voltage range up to 44V
Higher output current capability per channel

Parameter Comparison

Parameter	LT1179SW#PBF	AD704JRZ-16	AD704JRZ-16-REEL	OP497GSZ	OP497GSZ-REEL	TLE2144CDW	TLE2144CDWR	TLE2144IDW
Manufacturer	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Analog Devices	Texas Instruments	Texas Instruments	Texas Instruments
Number of Circuits	4	4	4	4	4	4	4	4
Package / Case	16-SOIC	16-SOIC	16-SOIC	16-SOIC	16-SOIC	16-SOIC	16-SOIC	16-SOIC
Slew Rate (V/µs)	0.04	0.1	0.1	0.15	0.15	45	45	45
Gain Bandwidth Product (kHz)	85	800	800	500	500	5900	5900	5900
Current - Input Bias (pA/nA)	3 nA	100 pA	100 pA	60 pA	60 pA	700 nA	700 nA	700 nA
Voltage - Input Offset (µV)	160	50	50	80	80	290	290	290
Current - Supply (mA x4 Channels)	0.017	1.5	1.5	0.525	0.525	6.9	6.9	6.9
Current - Output / Channel (mA)	—	15	15	25	25	50	50	50
Voltage - Supply Span Min (V)	5	4	4	4	4	4	4	4
Voltage - Supply Span Max (V)	30	36	36	40	40	44	44	44
Operating Temperature (°C)	0 to 70	0 to 70	0 to 70	-40 to 85	-40 to 85	0 to 70	0 to 70	-40 to 105
Output Type	—	—	—	—	—	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All substitute parts listed are in active production status and carry ROHS3 compliance certification, meeting current regulatory requirements for electronic component manufacturing and environmental standards.

For applications requiring direct electrical compatibility with minimal performance changes: Select AD704JRZ-16 or AD704JRZ-16-REEL. These Analog Devices parts maintain the same manufacturer lineage as the primary part and offer improved slew rate and gain bandwidth product while operating within the same temperature range. The AD704JRZ-16-REEL variant is packaged in Tape & Reel format for automated assembly processes.

For applications with extended temperature requirements: Select OP497GSZ or OP497GSZ-REEL. These parts extend the operating temperature range to -40°C to 85°C, accommodating industrial and automotive environments. The OP497GSZ-REEL variant provides Cut Tape and Digi-Reel packaging options.

For applications requiring high-speed operation and rail-to-rail output: Select TLE2144CDW, TLE2144CDWR, or TLE2144IDW. These Texas Instruments parts deliver significantly higher slew rates (45V/µs) and gain bandwidth products (5.9 MHz), with rail-to-rail output capability. The TLE2144IDW variant supports extended operating temperature range from -40°C to 105°C, suitable for demanding industrial applications.

Packaging considerations:

LT1179SW#PBF is supplied in Tube packaging
AD704JRZ-16 is supplied in Tube packaging; AD704JRZ-16-REEL in Tape & Reel
OP497GSZ is supplied in Tube packaging; OP497GSZ-REEL in Cut Tape & Digi-Reel
TLE2144CDW and TLE2144IDW are supplied in Tube packaging; TLE2144CDWR in Tape & Reel

All parts maintain identical 16-SOIC package geometry and surface mount mounting type, ensuring direct PCB footprint compatibility.

Frequently Asked Questions (FAQ)

Q: Can the AD704JRZ-16 directly replace the LT1179SW#PBF in existing designs?

A: The AD704JRZ-16 maintains identical package geometry and circuit count. Both parts operate within overlapping supply voltage ranges (4V to 36V for AD704JRZ-16 encompasses the 5V to 30V range of LT1179SW#PBF). The AD704JRZ-16 offers superior slew rate (0.1V/µs vs. 0.04V/µs) and gain bandwidth product (800 kHz vs. 85 kHz). Direct substitution is mechanically and electrically compatible for applications where the enhanced performance specifications do not create design conflicts.

Q: What is the primary difference between the TLE2144 variants?

A: TLE2144CDW and TLE2144CDWR share identical electrical specifications but differ in packaging format. TLE2144CDW is supplied in Tube packaging, while TLE2144CDWR is supplied in Tape & Reel format. TLE2144IDW offers the same electrical performance as both variants but extends the operating temperature range to -40°C to 105°C, accommodating wider environmental conditions. All three maintain the 16-SOIC package footprint.

Q: How does supply current consumption affect substitution decisions?

A: The LT1179SW#PBF consumes 17µA across four channels (4.25µA per channel). Substitute parts show varying consumption: AD704JRZ-16 at 1.5mA, OP497GSZ at 525µA, and TLE2144 variants at 6.9mA. Higher supply current consumption increases power dissipation and thermal load. Applications with strict power budgets or battery operation should prioritize lower-consumption alternatives such as OP497GSZ or maintain the original LT1179SW#PBF specification.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed carry ROHS3 compliance certification, meeting current environmental and regulatory standards for electronic component manufacturing. This ensures compatibility with modern manufacturing processes and regulatory requirements across global markets.

Q: What packaging options are available for high-volume production?

A: For automated assembly processes requiring Tape & Reel packaging, select AD704JRZ-16-REEL, OP497GSZ-REEL, or TLE2144CDWR. These variants are supplied in continuous reel format suitable for pick-and-place equipment. Tube packaging variants (AD704JRZ-16, OP497GSZ, TLE2144CDW, TLE2144IDW) are suitable for manual assembly or lower-volume production runs.

Q: Can the TLE2144 series be used in low-power applications?

A: The TLE2144 series consumes 6.9mA across four channels, significantly higher than the LT1179SW#PBF (17µA) or OP497GSZ (525µA). Applications with strict power consumption requirements should select OP497GSZ or maintain the original LT1179SW#PBF specification. The TLE2144 series is optimized for high-speed, high-output-current applications rather than low-power operation.

Q: What is the significance of rail-to-rail output in the TLE2144 variants?

A: Rail-to-rail output capability allows the amplifier output to swing to the positive and negative supply rails, maximizing the usable output voltage range. This feature is beneficial in single-supply applications or designs requiring maximum dynamic range. The LT1179SW#PBF and AD704/OP497 series do not specify rail-to-rail output capability, limiting output swing to a voltage range below the supply rails.

Q: Are there inventory considerations when selecting substitute parts?

A: Current inventory levels vary significantly: LT1179SW#PBF (1109 pcs), AD704JRZ-16 (695,927 pcs), AD704JRZ-16-REEL (4,883 pcs), OP497GSZ (3,012 pcs), OP497GSZ-REEL (8,053 pcs), TLE2144CDW (1,590 pcs), TLE2144CDWR (1,917 pcs), and TLE2144IDW (3,200 pcs). Parts with higher inventory levels typically offer shorter lead times and greater availability for large-volume production requirements.

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