LMV797MM Equivalent & Substitute Parts

Part Overview

The LMV797MM is a general-purpose operational amplifier manufactured by Texas Instruments, featuring dual circuits in an 8-VSSOP surface-mount package. This device delivers rail-to-rail output capability with a 17 MHz gain-bandwidth product and operates across a 1.8V to 5.5V supply range, making it suitable for low-voltage analog signal processing applications.

The LMV797MM is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements. Active alternatives with comparable electrical and mechanical characteristics are available from multiple manufacturers.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Output Type	Rail-to-Rail	—
Slew Rate	11.5	V/µs
Gain Bandwidth Product	17	MHz
Current - Input Bias	0.1	pA
Voltage - Input Offset	100	µV
Current - Supply (x2 Channels)	1.3	mA
Current - Output / Channel	60	mA
Voltage - Supply Span (Min)	1.8	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 125	°C
Mounting Type	Surface Mount	—
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	—
Supplier Device Package	8-VSSOP	—
RoHS Status	RoHS non-compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the LMV797MM is determined by the following critical parameters:

Dual-circuit configuration (2 circuits per package)
Rail-to-rail output capability
Surface-mount 8-pin package (8-VSSOP, 8-MSOP, or 8-TSSOP variants)
Supply voltage range (minimum 1.8V to maximum 5.5V)
Operating temperature range (-40°C to 125°C or compatible subset)
Slew rate and gain-bandwidth product (performance envelope)
Output current capability (60 mA per channel)

Substitute parts are grouped into two categories:

Category 1: Direct Functional Equivalents Parts that maintain identical or near-identical electrical specifications and package compatibility. These include the LMV797MM/NOPB (active variant of the same base product) and general-purpose amplifiers from Microchip Technology (MCP6422 series) and onsemi (NCV20032DMR2G, NCS20032DMR2G).

Category 2: Performance-Optimized Alternatives Parts that meet the core substitution criteria but offer different performance trade-offs. These include CMOS amplifiers from Rohm Semiconductor (BU7266 series, BU7486FVM-TR), Analog Devices (LTC6087CMS8#PBF), and Analog Devices/Maxim Integrated (MAX4128EUA+T). These alternatives provide lower power consumption, extended temperature ranges, or enhanced bandwidth characteristics while maintaining package and supply voltage compatibility.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Input Offset (µV)	Supply Current (mA)	Output Current (mA)	Temp Range (°C)	Status
LMV797MM	Texas Instruments	General Purpose	11.5	17	0.1	100	1.3	60	-40 to 125	Obsolete
LMV797MM/NOPB	Texas Instruments	General Purpose	11.5	17	0.1	100	1.3	60	-40 to 125	Active
MCP6422T-E/MS	Microchip Technology	General Purpose	0.05	0.09	1	1000	0.0044	22	-40 to 125	Active
NCV20032DMR2G	onsemi	General Purpose	8	7	1	500	0.275	14	-40 to 125	Active
NCS20032DMR2G	onsemi	General Purpose	8	7	1	500	0.275	96	-40 to 125	Active
LTC6087CMS8#PBF	Analog Devices Inc.	CMOS	7.2	14	1	330	1.05	45	-40 to 85	Active
MAX4128EUA+T	Analog Devices Inc./Maxim Integrated	General Purpose	10	25	50	400	0.725	50	-40 to 85	Active
BU7266FVM-TR	Rohm Semiconductor	CMOS	0.0024	0.004	1	1000	0.0007	4	-40 to 85	Active
BU7266SFVM-TR	Rohm Semiconductor	CMOS	0.0024	0.004	1	1000	0.0007	4	-40 to 105	Active
BU7486FVM-TR	Rohm Semiconductor	CMOS	10	10	1	1000	6	12	-40 to 105	Active

Engineering Selection Recommendations

Primary Recommendation: LMV797MM/NOPB

The LMV797MM/NOPB is the direct active equivalent of the obsolete LMV797MM. It maintains identical electrical specifications, package configuration, and operating characteristics. This part is manufactured by Texas Instruments, carries ROHS3 compliance certification, and is currently in active production with substantial inventory availability (19,364 units). Selection of this part eliminates all compatibility concerns and requires no circuit redesign.

Secondary Recommendations for Performance-Matched Substitution:

MCP6422T-E/MS (Microchip Technology) provides full compatibility across the 1.8V to 5.5V supply range and -40°C to 125°C operating temperature. This part is ROHS3 compliant and active. Trade-offs include significantly reduced slew rate (0.05 V/µs versus 11.5 V/µs) and gain-bandwidth product (90 kHz versus 17 MHz), making it suitable only for low-frequency signal processing applications.

NCS20032DMR2G (onsemi) delivers comparable slew rate (8 V/µs) and supply current characteristics with superior output current capability (96 mA per channel). This part supports the full -40°C to 125°C temperature range, is ROHS3 compliant, and active. The gain-bandwidth product (7 MHz) is lower than the LMV797MM, requiring verification for bandwidth-critical applications.

LTC6087CMS8#PBF (Analog Devices Inc.) offers a 14 MHz gain-bandwidth product with 7.2 V/µs slew rate and ROHS3 compliance. Operating temperature range is limited to -40°C to 85°C. This part is suitable for applications not requiring the full 125°C upper temperature limit.

MAX4128EUA+T (Analog Devices Inc./Maxim Integrated) provides the highest gain-bandwidth product (25 MHz) among active alternatives, with 10 V/µs slew rate and ROHS3 compliance. Operating temperature is limited to -40°C to 85°C. This part is recommended for bandwidth-demanding applications within the reduced temperature range.

Low-Power Alternatives:

BU7266SFVM-TR (Rohm Semiconductor) delivers ultra-low supply current (700 nA) and is ROHS3 compliant with extended temperature range (-40°C to 105°C). This part is suitable only for applications tolerating extremely low bandwidth (4 kHz) and slew rate (0.0024 V/µs).

BU7486FVM-TR (Rohm Semiconductor) provides 10 V/µs slew rate and 10 MHz gain-bandwidth product with ROHS3 compliance and -40°C to 105°C operating range. Minimum supply voltage is 3V, restricting use in 1.8V systems. This part is suitable for 3V to 5.5V applications requiring moderate power consumption.

All recommended substitutes are ROHS3 compliant and carry REACH Unaffected status, meeting modern environmental and regulatory requirements.

Frequently Asked Questions (FAQ)

Q1: Can I directly replace LMV797MM with LMV797MM/NOPB without circuit modification?

A: Yes. The LMV797MM/NOPB is the active production variant of the same base product (LMV797). Both parts share identical electrical specifications, package configuration (8-VSSOP), and operating characteristics. No circuit redesign is required. The primary difference is product status (active versus obsolete) and RoHS compliance (ROHS3 versus non-compliant).

Q2: What are the key differences between general-purpose and CMOS amplifier substitutes?

A: General-purpose amplifiers (MCP6422T-E/MS, NCV20032DMR2G, NCS20032DMR2G) maintain performance characteristics closer to the LMV797MM, including moderate to high slew rates and gain-bandwidth products. CMOS amplifiers (BU7266 series, BU7486FVM-TR, LTC6087CMS8#PBF) prioritize ultra-low power consumption at the cost of reduced bandwidth and slew rate. Selection depends on application requirements for speed versus power efficiency.

Q3: Which substitute parts support the full -40°C to 125°C operating temperature range?

A: LMV797MM/NOPB, MCP6422T-E/MS, NCV20032DMR2G, and NCS20032DMR2G all support -40°C to 125°C operation. All other active alternatives are limited to -40°C to 85°C or -40°C to 105°C. Verify application temperature requirements before selection.

Q4: Are all substitute parts available in 8-VSSOP or 8-MSOP packages?

A: Yes. All listed substitute parts are available in 8-pin surface-mount packages compatible with the LMV797MM footprint. Package variants include 8-VSSOP, 8-MSOP, 8-TSSOP, and 8-uMAX/uSOP. Verify specific package availability with your supplier, as some manufacturers offer multiple package options for the same part number.

Q5: Which substitutes are suitable for 1.8V minimum supply voltage applications?

A: LMV797MM/NOPB, MCP6422T-E/MS, NCV20032DMR2G, NCS20032DMR2G, BU7266FVM-TR, BU7266SFVM-TR, and LTC6087CMS8#PBF all support 1.8V minimum supply voltage. BU7486FVM-TR and MAX4128EUA+T require minimum 3V and 2.7V respectively. Confirm your circuit's minimum supply voltage requirement before part selection.

Q6: What is the impact of reduced slew rate on circuit performance?

A: Slew rate determines the maximum rate of output voltage change. The LMV797MM provides 11.5 V/µs. Substitutes with significantly lower slew rates (such as BU7266 series at 0.0024 V/µs or MCP6422 at 0.05 V/µs) are unsuitable for high-frequency signal processing, fast transient response, or precision timing applications. These low-slew-rate parts are limited to DC and very-low-frequency signal conditioning. Verify application bandwidth requirements before selecting low-slew-rate alternatives.

Q7: How does gain-bandwidth product affect substitution suitability?

A: Gain-bandwidth product (GBW) defines the frequency-gain trade-off. The LMV797MM provides 17 MHz GBW. Substitutes with lower GBW (such as MCP6422 at 90 kHz or BU7266 at 4 kHz) limit closed-loop bandwidth and are suitable only for low-frequency applications. Substitutes with higher GBW (such as MAX4128 at 25 MHz) provide extended bandwidth capability. Verify your circuit's required closed-loop bandwidth before selection.

Q8: Are all substitute parts RoHS compliant?

A: All active substitute parts listed carry ROHS3 compliance certification. The original LMV797MM is RoHS non-compliant. If RoHS compliance is a design requirement, the LMV797MM/NOPB or any active substitute part is acceptable.

Q9: What output current capability should I verify for my application?

A: The LMV797MM provides 60 mA per channel. Substitutes vary significantly: NCS20032DMR2G provides 96 mA (higher), while BU7266 series provides only 4 mA (much lower). Verify your circuit's load current requirements. If your design requires 60 mA output current, parts with lower ratings (BU7266, MCP6422) are unsuitable without additional output buffering.

Q10: Can I use a substitute part with a lower maximum operating temperature?

A: Only if your application does not require the full -40°C to 125°C range. If your circuit operates within -40°C to 85°C, parts such as LTC6087CMS8#PBF and MAX4128EUA+T are acceptable. If your application requires operation above 85°C, select only parts rated to 105°C or 125°C. Exceeding a part's maximum operating temperature voids reliability and may cause permanent damage.

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