ALD1726GSAL Equivalent & Substitute Parts

Part Overview

The ALD1726GSAL is a general-purpose operational amplifier manufactured by Advanced Linear Devices Inc., housed in an 8-SOIC surface mount package. This rail-to-rail output amplifier is designed for low-power applications requiring minimal input bias current and operates across a 2V to 10V supply span. The device is currently active in production with 867 units in stock.

Substitute parts are necessary when the ALD1726GSAL becomes unavailable, when alternative supply sources are required, or when design specifications permit operation with enhanced performance characteristics while maintaining functional compatibility within the 8-SOIC package form factor.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Output Type	Rail-to-Rail	—
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Voltage - Supply Span (Min)	2	V
Voltage - Supply Span (Max)	10	V
Operating Temperature	0°C ~ 70°C	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution eligibility for the ALD1726GSAL is determined by the following mandatory criteria:

Package Compatibility: All substitute parts must use the 8-SOIC (0.154", 3.90mm Width) surface mount package to ensure direct PCB footprint compatibility.

Functional Classification: All substitutes must be single-circuit, general-purpose operational amplifiers with rail-to-rail output capability.

Supply Voltage Overlap: Substitute parts must support the minimum 2V supply requirement of the ALD1726GSAL. The maximum supply voltage of substitutes may exceed 10V without restriction, as this provides design flexibility.

Mounting Technology: All substitutes must be surface mount devices compatible with standard PCB assembly processes.

Regulatory Compliance: All substitutes must maintain ROHS3 compliance and REACH unaffected status to satisfy environmental and regulatory requirements.

Substitute parts are grouped into two categories based on operating temperature range and product status:

Category A - Extended Temperature Range (Active Products): LMP7707MA/NOPB, LTC6240HVCS8#PBF, LTC6240HVHS8#PBF, LTC6240HVIS8#PBF, LTC6240HVIS8#TRPBF, OPA725AID, OPA725AIDR, TL971QDRQ1. These parts support operating temperatures beyond the ALD1726GSAL specification and are currently in active production.

Category B - Restricted Availability (Obsolete Products): TLV2241ID. This part is marked obsolete and should be considered only when extended temperature operation is not required and alternative sources are exhausted.

Parameter Comparison

Parameter	ALD1726GSAL	LMP7707MA/NOPB	LTC6240HVCS8#PBF	LTC6240HVHS8#PBF	LTC6240HVIS8#PBF	LTC6240HVIS8#TRPBF	OPA725AID	OPA725AIDR	TL971QDRQ1	TLV2241ID
Manufacturer	Advanced Linear Devices Inc.	Texas Instruments	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Number of Circuits	1	1	1	1	1	1	1	1	1	1
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
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)	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)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Voltage - Supply Span (Min)	2 V	2.7 V	2.8 V	2.8 V	2.8 V	2.8 V	4 V	4 V	2.7 V	2.5 V
Voltage - Supply Span (Max)	10 V	12 V	11 V	11 V	11 V	11 V	12 V	12 V	12 V	12 V
Operating Temperature	0°C ~ 70°C	-40°C ~ 125°C	0°C ~ 70°C	-40°C ~ 125°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 85°C
Slew Rate	0.17 V/µs	5.9 V/µs	10 V/µs	10 V/µs	10 V/µs	10 V/µs	30 V/µs	30 V/µs	5 V/µs	0.002 V/µs
Gain Bandwidth Product	400 kHz	15 MHz	18 MHz	18 MHz	18 MHz	18 MHz	20 MHz	20 MHz	12 MHz	5.5 kHz
Current - Input Bias	0.01 pA	0.2 pA	0.5 pA	0.5 pA	0.5 pA	0.5 pA	30 pA	30 pA	200 nA	100 pA
Voltage - Input Offset	150 µV	37 µV	60 µV	60 µV	60 µV	60 µV	1.2 mV	1.2 mV	1 mV	600 µV
Current - Supply	25 µA	790 µA	2.7 mA	2.7 mA	2.7 mA	2.7 mA	4.3 mA	4.3 mA	2 mA	1 µA
Current - Output / Channel	200 µA	86 mA	35 mA	35 mA	35 mA	35 mA	40 mA	40 mA	80 mA	200 µA
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	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)	2 (1 Year)	2 (1 Year)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active	Active	Active	Active	Active	Obsolete

Engineering Selection Recommendations

Primary Substitutes (Active Products with Matching Operating Temperature):

LTC6240HVCS8#PBF is the preferred substitute when the ALD1726GSAL is unavailable. This part maintains the 0°C to 70°C operating temperature specification of the original device, ensuring thermal compatibility in existing designs. It is manufactured by Analog Devices Inc., is currently in active production with 12,841 units in stock, and carries ROHS3 compliance. The LTC6240HVCS8#PBF operates within the required supply voltage range (2.8V to 11V) and provides enhanced performance characteristics including higher slew rate (10V/µs versus 0.17V/µs) and greater gain bandwidth product (18MHz versus 400kHz).

Secondary Substitutes (Active Products with Extended Operating Temperature):

LMP7707MA/NOPB, LTC6240HVHS8#PBF, LTC6240HVIS8#PBF, LTC6240HVIS8#TRPBF, OPA725AID, OPA725AIDR, and TL971QDRQ1 are suitable substitutes when designs require extended operating temperature ranges beyond 0°C to 70°C. These parts are all currently in active production and ROHS3 compliant. Selection among these options depends on specific application requirements regarding slew rate, gain bandwidth product, supply current, and output current capacity.

LTC6240HVHS8#PBF and LTC6240HVIS8#PBF extend the operating temperature to -40°C to 125°C and -40°C to 85°C respectively, while maintaining identical electrical performance to LTC6240HVCS8#PBF. LTC6240HVIS8#TRPBF is the tape and reel variant of LTC6240HVIS8#PBF for high-volume manufacturing.

OPA725AID and OPA725AIDR (tape and reel variant) provide the highest slew rate (30V/µs) and gain bandwidth product (20MHz) among all substitutes, suitable for applications requiring maximum dynamic performance. These parts operate across -40°C to 125°C.

TL971QDRQ1 is an automotive-grade device (AEC-Q100 qualified) with -40°C to 125°C operating temperature, appropriate for automotive and harsh environment applications.

Restricted Availability (Obsolete Products):

TLV2241ID is marked as obsolete and should not be selected for new designs. This part is retained in the substitute list only for legacy system maintenance where the original ALD1726GSAL is unavailable and extended temperature operation is not required. The TLV2241ID exhibits significantly reduced performance characteristics (0.002V/µs slew rate and 5.5kHz gain bandwidth product) compared to the ALD1726GSAL.

Supply Voltage Considerations:

OPA725AID and OPA725AIDR require a minimum supply voltage of 4V, which exceeds the ALD1726GSAL minimum of 2V. These parts are unsuitable for applications operating at 2V to 4V supply levels.

LTC6240 series parts (LTC6240HVCS8#PBF, LTC6240HVHS8#PBF, LTC6240HVIS8#PBF, LTC6240HVIS8#TRPBF) require a minimum supply voltage of 2.8V, which is compatible with the ALD1726GSAL 2V minimum specification for most practical applications.

LMP7707MA/NOPB and TL971QDRQ1 require minimum supply voltages of 2.7V, providing compatibility with the ALD1726GSAL specification.

Frequently Asked Questions (FAQ)

Q: Can I directly replace an ALD1726GSAL with any of the listed substitute parts?

A: Direct replacement is possible only if the substitute part is installed in the same 8-SOIC footprint on the PCB. All listed substitutes use the 8-SOIC (0.154", 3.90mm Width) package, ensuring mechanical compatibility. However, electrical performance differences must be evaluated for each application. The ALD1726GSAL has a lower slew rate (0.17V/µs) and lower gain bandwidth product (400kHz) compared to most substitutes, which may affect circuit behavior in high-frequency or high-speed applications.

Q: What is the difference between tube and tape & reel packaging?

A: Tube packaging is used for lower-volume orders and manual assembly processes, while tape & reel packaging is used for automated high-volume manufacturing. The electrical specifications and performance of the device are identical between packaging types. For example, LTC6240HVIS8#PBF (tube) and LTC6240HVIS8#TRPBF (tape & reel) are functionally equivalent. Selection depends on manufacturing volume and assembly equipment capabilities.

Q: Why do some substitutes have higher minimum supply voltages than the ALD1726GSAL?

A: The ALD1726GSAL operates at a minimum supply voltage of 2V, while some substitutes require 2.7V, 2.8V, or 4V. This difference reflects the design architecture and process technology of each manufacturer. For applications operating at 2V to 2.7V, only the ALD1726GSAL, LMP7707MA/NOPB, TL971QDRQ1, and TLV2241ID are suitable. For applications requiring 2V operation, the ALD1726GSAL remains the only option among the listed substitutes.

Q: What does "obsolete" product status mean for TLV2241ID?

A: Obsolete status indicates that Texas Instruments has discontinued production and support for the TLV2241ID. While 936 units remain in stock, no future production is planned. This part should be used only for maintaining existing systems where the original ALD1726GSAL is unavailable. New designs must not incorporate the TLV2241ID.

Q: How do I choose between LTC6240HVCS8#PBF, LTC6240HVHS8#PBF, and LTC6240HVIS8#PBF?

A: All three parts are manufactured by Analog Devices Inc. and share identical electrical performance (10V/µs slew rate, 18MHz gain bandwidth product, 2.7mA supply current). The differences are in operating temperature range and packaging:

LTC6240HVCS8#PBF: 0°C to 70°C operating temperature, tube packaging. Select this part when the operating temperature range matches the ALD1726GSAL specification.

LTC6240HVHS8#PBF: -40°C to 125°C operating temperature, tube packaging. Select this part for extended temperature applications requiring the widest operating range.

LTC6240HVIS8#PBF: -40°C to 85°C operating temperature, tube packaging. Select this part for extended low-temperature operation without the highest temperature capability.

LTC6240HVIS8#TRPBF: -40°C to 85°C operating temperature, tape & reel packaging. Select this variant for high-volume automated assembly.

Q: What is the significance of MSL (Moisture Sensitivity Level)?

A: MSL indicates the maximum time a component can be stored in ambient conditions (typically 30°C, 85% relative humidity) before requiring baking to remove absorbed moisture. MSL 1 (Unlimited) means the component has no moisture sensitivity restrictions and can be stored indefinitely without special handling. MSL 2 (1 Year) means the component must be used within one year of the manufacturing date or must be baked before use. The ALD1726GSAL and most substitutes carry MSL 1, except OPA725AID and OPA725AIDR which carry MSL 2. This affects storage and handling procedures in manufacturing environments.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all listed substitute parts are ROHS3 compliant and REACH unaffected, matching the environmental compliance status of the ALD1726GSAL. This ensures compatibility with regulatory requirements in the European Union and other regions with similar environmental standards.

Q: Which substitute offers the best performance improvement over the ALD1726GSAL?

A: OPA725AID and OPA725AIDR provide the highest performance improvement with a slew rate of 30V/µs (176 times faster than the ALD1726GSAL) and a gain bandwidth product of 20MHz (50 times higher). However, these parts require a minimum supply voltage of 4V, which may not be compatible with all applications. For applications operating at lower supply voltages, LTC6240 series parts offer the best performance improvement while maintaining compatibility with the ALD1726GSAL supply voltage range.

Q: Can I use TL971QDRQ1 in non-automotive applications?

A: Yes, TL971QDRQ1 is an automotive-grade device with AEC-Q100 qualification, but it can be used in non-automotive applications. The automotive qualification indicates enhanced reliability testing and quality assurance, making it suitable for any application requiring high reliability. The electrical specifications are identical to other general-purpose substitutes in the same performance class.

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