LMV821DBVT Equivalent & Substitute Parts

Part Overview

The LMV821DBVT is a general-purpose operational amplifier manufactured by Texas Instruments, housed in a SOT-23-5 surface mount package. This device features rail-to-rail output capability and is designed for low-voltage, low-power applications requiring single-channel amplification. The part is currently classified as obsolete, necessitating identification of active equivalent and substitute components that maintain functional compatibility within specified electrical and mechanical parameters.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Output Type	Rail-to-Rail	—
Slew Rate	1.9	V/µs
Gain Bandwidth Product	5.5	MHz
Current - Input Bias	40	nA
Voltage - Input Offset	1	mV
Current - Supply	300	µA
Voltage - Supply Span (Min)	2.5	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 85	°C
Mounting Type	Surface Mount	—
Package / Case	SC-74A, SOT-753	—
Supplier Device Package	SOT-23-5	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—
REACH Status	REACH Unaffected	—

Substitute Part Grouping Explanation

Substitution of the LMV821DBVT is determined by strict adherence to the following electrical and mechanical compatibility criteria:

Primary Substitution Criteria:

Amplifier Type: General Purpose
Number of Circuits: 1
Output Type: Rail-to-Rail
Voltage Supply Range: Minimum 2.5 V, Maximum 5.5 V
Operating Temperature Range: -40°C to 85°C (minimum)
Mounting Type: Surface Mount
RoHS3 Compliance and REACH Unaffected status

Package Compatibility Groups:

Group 1 - SOT-23-5 Package (Direct Footprint Compatible): Substitute parts maintaining the SOT-23-5 package configuration allow direct PCB replacement without layout modification. These include LMV821M5/NOPB, LMV821M5X/NOPB, LMV821AILT, and LMV821ILT.

Group 2 - SC-70-5 Package (Alternative Footprint): Substitute parts in SC-70-5 package (5-TSSOP, SOT-353) require PCB layout redesign but maintain electrical compatibility. These include LMV721M7/NOPB, LMV721M7X/NOPB, LMV821M7/NOPB, and LMV821M7X/NOPB.

All substitute parts listed maintain the required rail-to-rail output capability, single-circuit configuration, and supply voltage range compatibility with the original LMV821DBVT specification.

Parameter Comparison

Part Number	Manufacturer	Product Status	Slew Rate (V/µs)	GBW (MHz)	Input Bias (nA)	Input Offset (mV)	Supply Current (µA)	Package	Temp Range (°C)
LMV821DBVT	Texas Instruments	Obsolete	1.9	5.5	40	1	300	SOT-23-5	-40 to 85
LMV821M5/NOPB	National Semiconductor	Active	2	5.6	100	3.5	300	SOT-23-5	-40 to 85
LMV821M5X/NOPB	National Semiconductor	Active	2	5.6	100	3.5	300	SOT-23-5	-40 to 85
LMV821AILT	STMicroelectronics	Active	1.9	5.5	60	0.8	300	SOT-23-5	-40 to 125
LMV821ILT	STMicroelectronics	Active	1.9	5.5	60	3.5	300	SOT-23-5	-40 to 125
LMV821M7/NOPB	Texas Instruments	Active	2	5.6	100	3.5	300	SC-70-5	-40 to 85
LMV821M7X/NOPB	National Semiconductor	Active	2	5.6	100	3.5	300	SC-70-5	-40 to 85
LMV721M5/NOPB	Texas Instruments	Active	5.25	10	260	0.08	1030	SOT-23-5	-40 to 85
LMV721M5X/NOPB	Texas Instruments	Active	5.25	10	260	0.08	1030	SOT-23-5	-40 to 85
LMV721M7/NOPB	National Semiconductor	Active	5.25	10	260	0.08	1030	SC-70-5	-40 to 85
LMV721M7X/NOPB	Texas Instruments	Active	5.25	10	260	0.08	1030	SC-70-5	-40 to 85

Engineering Selection Recommendations

Direct Replacement (SOT-23-5 Package, No Layout Changes Required):

For applications requiring immediate substitution without PCB redesign, LMV821AILT and LMV821ILT from STMicroelectronics are recommended. Both parts maintain identical electrical specifications to the LMV821DBVT (1.9 V/µs slew rate, 5.5 MHz gain-bandwidth product, 300 µA supply current) while offering active product status and extended operating temperature range to 125°C. These parts are ROHS3 compliant and REACH unaffected, matching the original part's compliance profile.

LMV821M5/NOPB and LMV821M5X/NOPB from National Semiconductor provide SOT-23-5 package compatibility with marginally higher slew rate (2 V/µs) and gain-bandwidth product (5.6 MHz), representing functional equivalents within the LMV821 base product family.

Alternative Package Options (SC-70-5, Layout Modification Required):

LMV821M7/NOPB and LMV821M7X/NOPB offer SC-70-5 package alternatives for designs permitting footprint changes. These maintain the LMV821 electrical characteristics while reducing board space requirements.

Enhanced Performance Alternative:

LMV721 series parts (LMV721M5/NOPB, LMV721M5X/NOPB, LMV721M7/NOPB, LMV721M7X/NOPB) provide higher performance specifications with 5.25 V/µs slew rate and 10 MHz gain-bandwidth product. These are suitable for applications requiring improved dynamic response, though they consume higher supply current (1.03 mA versus 300 µA).

All recommended substitutes maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility with the original specification.

Frequently Asked Questions (FAQ)

Q: Can LMV821AILT directly replace LMV821DBVT without PCB modification?

A: Yes. LMV821AILT shares identical SOT-23-5 package configuration and maintains equivalent electrical specifications including 1.9 V/µs slew rate, 5.5 MHz gain-bandwidth product, and 300 µA supply current. Both operate across -40°C to 85°C minimum temperature range and are ROHS3 compliant.

Q: What is the difference between LMV821M5/NOPB and LMV821M5X/NOPB?

A: Both parts are electrically identical with 2 V/µs slew rate and 5.6 MHz gain-bandwidth product in SOT-23-5 package. The difference lies in packaging format: M5/NOPB is supplied in bulk, while M5X/NOPB is supplied in cut tape and digi-reel format. Selection depends on assembly process requirements.

Q: Why do LMV721 series parts have higher supply current than LMV821 series?

A: LMV721 series is designed for higher performance applications with 5.25 V/µs slew rate and 10 MHz gain-bandwidth product, requiring 1.03 mA supply current compared to 300 µA for LMV821 series. This trade-off provides improved dynamic response characteristics.

Q: Are SC-70-5 package parts (LMV821M7/NOPB) compatible with SOT-23-5 footprints?

A: No. SC-70-5 (5-TSSOP, SOT-353) and SOT-23-5 packages have different pinout configurations and physical dimensions. SC-70-5 substitutes require PCB layout redesign and cannot be used in existing SOT-23-5 footprints.

Q: Do all substitute parts meet the original -40°C to 85°C operating temperature specification?

A: Yes. All listed substitute parts operate within the -40°C to 85°C range minimum. STMicroelectronics variants (LMV821AILT, LMV821ILT) extend operation to 125°C, providing additional thermal margin.

Q: What is the significance of the NOPB suffix in part numbers?

A: NOPB indicates "No Plumbum" (lead-free) packaging, confirming ROHS3 compliance. All substitute parts listed carry this designation, ensuring regulatory compliance with hazardous substance restrictions.

Q: Can LMV721M5X/NOPB be used in place of LMV821DBVT in all applications?

A: LMV721M5X/NOPB maintains SOT-23-5 package compatibility and supply voltage range (2.2 V to 5.5 V). However, higher supply current (1.03 mA versus 300 µA) and different input bias current (260 nA versus 40 nA) may affect circuit performance in power-sensitive or precision applications. Verification against specific application requirements is necessary.

Q: What inventory availability should be considered for production planning?

A: LMV821M5X/NOPB offers highest inventory (20,200 pcs), followed by LMV721M5X/NOPB (15,200 pcs) and LMV821AILT (16,555 pcs). These parts provide reliable supply for volume production requirements.

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