ALD1722SAL Equivalent & Substitute Parts

Part Overview

The ALD1722SAL 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 linear signal processing applications requiring low input bias current and moderate bandwidth performance. The device is currently in active production status with 906 units available in inventory.

Substitute parts are necessary when the ALD1722SAL becomes unavailable, when alternative supply sources are required, or when application requirements demand enhanced performance characteristics such as higher slew rate, increased gain bandwidth product, or extended operating temperature ranges. All substitute parts listed maintain functional equivalence through identical package geometry, rail-to-rail output architecture, and general-purpose amplifier classification.

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	—
Slew Rate	2.8	V/µs
Gain Bandwidth Product	1.7	MHz
Current - Input Bias	0.01	pA
Voltage - Input Offset	25	µV
Current - Supply	800	µA
Current - Output / Channel	8	mA
Voltage - Supply Span (Min)	4	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 ALD1722SAL is determined by strict adherence to the following criteria:

Primary Compatibility Requirements:

Package type: 8-SOIC (0.154", 3.90mm Width) surface mount configuration
Amplifier classification: General Purpose
Circuit count: Single circuit (1)
Output architecture: Rail-to-Rail

Electrical Performance Parameters:

Supply voltage range must encompass or exceed the ALD1722SAL operating window (4V to 10V minimum)
Slew rate, gain bandwidth product, input bias current, and output current capacity may vary
Input offset voltage and supply current may differ from the reference device

Environmental & Compliance Requirements:

RoHS3 compliance mandatory
MSL rating of 1 or 2 acceptable
REACH unaffected status required
Product status: Active or Obsolete (with inventory availability noted)

All substitute parts listed maintain identical pinout compatibility and mechanical fit within the 8-SOIC package footprint, enabling direct board-level replacement without layout modification.

Parameter Comparison

Parameter	ALD1722SAL	LMP7707MA/NOPB	LTC6240HVCS8#PBF	LTC6240HVHS8#PBF	LTC6240HVIS8#PBF	OPA725AID	TL971QDRQ1	TLV2241ID
Manufacturer	Advanced Linear Devices Inc.	Texas Instruments	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Texas Instruments	Texas Instruments	Texas Instruments
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
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
Slew Rate (V/µs)	2.8	5.9	10	10	10	30	5	0.002
Gain Bandwidth Product (MHz)	1.7	15	18	18	18	20	12	0.0055
Current - Input Bias (pA)	0.01	0.2	0.5	0.5	0.5	30	200	100
Voltage - Input Offset (µV)	25	37	60	60	60	1200	1000	600
Current - Supply (µA)	800	790	2700	2700	2700	4300	2000	1
Current - Output / Channel (mA)	8	86	35	35	35	40	80	0.2
Voltage - Supply Span (Min)	4 V	2.7 V	2.8 V	2.8 V	2.8 V	4 V	2.7 V	2.5 V
Voltage - Supply Span (Max)	10 V	12 V	11 V	11 V	11 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 ~ 125°C	-40°C ~ 125°C	-40°C ~ 85°C
Product Status	Active	Active	Active	Active	Active	Active	Active	Obsolete
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	2 (1 Year)	1 (Unlimited)	1 (Unlimited)
Inventory (Pcs)	906	1627	12841	5820	1210	1971	2599	936

Engineering Selection Recommendations

Direct Substitutes (Identical Operating Temperature Range):

The LTC6240HVCS8#PBF maintains the ALD1722SAL operating temperature window (0°C ~ 70°C) while providing enhanced performance characteristics including 10V/µs slew rate, 18 MHz gain bandwidth product, and 35 mA output current capacity. This device is suitable for applications where the original temperature specification is mandatory and performance improvement is acceptable. Supply voltage range extends to 11V maximum, encompassing the ALD1722SAL requirement.

Extended Temperature Substitutes:

The LMP7707MA/NOPB, LTC6240HVHS8#PBF, OPA725AID, and TL971QDRQ1 all extend the operating temperature range to -40°C ~ 125°C or -40°C ~ 85°C, providing enhanced thermal performance for industrial and automotive applications. These devices are suitable when the original 0°C ~ 70°C specification is not a design constraint. All maintain rail-to-rail output architecture and 8-SOIC package compatibility.

Automotive-Grade Alternative:

The TL971QDRQ1 is qualified to AEC-Q100 automotive standards and is supplied in Tape & Reel packaging. This device is appropriate for automotive applications requiring formal qualification documentation and extended temperature operation (-40°C ~ 125°C).

Not Recommended:

The TLV2241ID is marked as Obsolete product status and exhibits significantly reduced performance specifications (0.002V/µs slew rate, 5.5 kHz gain bandwidth product, 0.2 mA output current). This device is not suitable as a primary substitute despite package compatibility and should only be considered when legacy system compatibility is explicitly required.

Frequently Asked Questions (FAQ)

Q: Can all listed substitute parts be used as direct pin-for-pin replacements for the ALD1722SAL?

A: Yes. All substitute parts are housed in the 8-SOIC (0.154", 3.90mm Width) package with identical pinout configuration. Direct board-level replacement is possible without PCB layout modification. However, performance characteristics vary significantly between devices, and circuit design validation is necessary to confirm functional equivalence in the specific application.

Q: What is the primary difference between the LTC6240 variants (HVCS8, HVHS8, HVIS8)?

A: The LTC6240 variants differ in operating temperature range. The HVCS8#PBF operates 0°C ~ 70°C (matching ALD1722SAL), the HVHS8#PBF operates -40°C ~ 125°C, and the HVIS8#PBF operates -40°C ~ 85°C. All three variants share identical electrical performance specifications (10V/µs slew rate, 18 MHz bandwidth, 35 mA output current). The HVIS8#TRPBF is the Tape & Reel packaging variant of the HVIS8#PBF.

Q: Why does the OPA725AID have higher input offset voltage (1.2 mV) compared to the ALD1722SAL (25 µV)?

A: The OPA725AID is optimized for higher slew rate (30V/µs) and gain bandwidth product (20 MHz) performance, which typically results in increased input offset voltage as a design trade-off. Applications sensitive to input offset voltage should evaluate circuit-level compensation or select alternatives with lower offset specifications such as the LTC6240 series.

Q: Is the TLV2241ID suitable as a substitute?

A: The TLV2241ID is marked as Obsolete product status and exhibits performance characteristics fundamentally different from the ALD1722SAL (0.002V/µs slew rate versus 2.8V/µs, 5.5 kHz bandwidth versus 1.7 MHz). This device is not recommended as a general substitute. It may only be considered for legacy applications where the original design was specifically validated with TLV2241ID performance parameters.

Q: What supply voltage range is compatible with all substitute parts?

A: The ALD1722SAL operates from 4V to 10V. All substitute parts support this range, with most extending the maximum supply voltage to 11V or 12V. The LMP7707MA/NOPB, LTC6240 series, and TL971QDRQ1 support lower minimum voltages (2.7V to 2.8V), providing additional flexibility for multi-supply applications.

Q: Which substitute offers the best inventory availability?

A: The LTC6240HVCS8#PBF has the highest inventory level at 12,841 units. The LTC6240HVHS8#PBF (5,820 units) and OPA725AIDR (7,879 units) also provide substantial stock levels. For time-critical applications, these devices offer the shortest lead times.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed carry RoHS3 compliance certification and REACH unaffected status, meeting current environmental and regulatory requirements for commercial and industrial applications.

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

A: MSL rating indicates moisture sensitivity during storage and handling. MSL 1 (Unlimited) devices have no moisture sensitivity restrictions and can be stored indefinitely at room temperature. MSL 2 (1 Year) devices, such as the OPA725AID and OPA725AIDR, require controlled storage conditions and have a one-year shelf life from the date of manufacture. For applications with extended storage requirements, MSL 1 devices are preferred.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message